Texas Instruments

The AFE7953 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and two RF sampling receiver chains. With operation up to 12 GHz, this device enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The TX signal paths support interpolation and digital up conversion options that deliver up to 400 MHz of signal bandwidth per TX channel. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2 nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. The AFE7953 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and two RF sampling receiver chains. With operation up to 12 GHz, this device enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The TX signal paths support interpolation and digital up conversion options that deliver up to 400 MHz of signal bandwidth per TX channel. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2 nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps.

The AFE7954 is a high performance, wide bandwidth quad channel RF sampling DAC. With operation up to 12 GHz, this device enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The signal paths support interpolation and digital up conversion options that deliver up to 1200 MHz of signal bandwidth for four DACs (TX) or 2400 MHz for two DACs. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. The AFE7954 is a high performance, wide bandwidth quad channel RF sampling DAC. With operation up to 12 GHz, this device enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The signal paths support interpolation and digital up conversion options that deliver up to 1200 MHz of signal bandwidth for four DACs (TX) or 2400 MHz for two DACs. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps.

The AFE7955 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and 3 RF sampling receiver chains. With operation up to 12 GHz, this device enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The TX signal paths support interpolation and digital up conversion options that deliver up to 1200 MHz of signal bandwidth per TX channel. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2 nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. Two receiver chains includes a 25-dB range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital converter). The two receiver channels have an analog peak power detector and various digital power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. Flexible decimation options provide optimization of signal bandwidth of up to 1200 MHz per RX channel. An additional receiver channel has a single wideband DDC supporting up to 1200 MHz bandwidth. The AFE7955 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and 3 RF sampling receiver chains. With operation up to 12 GHz, this device enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The TX signal paths support interpolation and digital up conversion options that deliver up to 1200 MHz of signal bandwidth per TX channel. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2 nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. Two receiver chains includes a 25-dB range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital converter). The two receiver channels have an analog peak power detector and various digital power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. Flexible decimation options provide optimization of signal bandwidth of up to 1200 MHz per RX channel. An additional receiver channel has a single wideband DDC supporting up to 1200 MHz bandwidth.

The AFE79xx is a family of high performance, wide bandwidth multi-channel transceivers, integrating four RF sampling transmitter chains, four RF sampling receiver chains, and up to two RF sampling digitizing auxiliary chains (feedback paths). The high dynamic range of the transmitter and receiver chains allows the device to generate and receive 3G, 4G, and 5G signals from wireless base stations, while the wide bandwidth capability of the AFE79xx devices is designed for multi-band 4G and 5G base stations. Each receiver chain includes a 25-dB range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital converter). Each receiver channel has an analog peak power detector and various digital power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 600 MHz of combined signal BW. In TDD mode, the receiver channel can be configured to dynamically switch between the traffic receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of re-using the same analog input for both purposes. Each transmitter chain includes a single or dual digital up converters (DUCs) supporting up to 1200-MHz combined signal bandwidth. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd or 3rd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. The feedback path includes an 25-dB range DSA driving a 3-GSPS RF sampling ADC, followed by a DDC with up to 1200-MHz bandwidth. The AFE79xx is a family of high performance, wide bandwidth multi-channel transceivers, integrating four RF sampling transmitter chains, four RF sampling receiver chains, and up to two RF sampling digitizing auxiliary chains (feedback paths). The high dynamic range of the transmitter and receiver chains allows the device to generate and receive 3G, 4G, and 5G signals from wireless base stations, while the wide bandwidth capability of the AFE79xx devices is designed for multi-band 4G and 5G base stations. Each receiver chain includes a 25-dB range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital converter). Each receiver channel has an analog peak power detector and various digital power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 600 MHz of combined signal BW. In TDD mode, the receiver channel can be configured to dynamically switch between the traffic receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of re-using the same analog input for both purposes. Each transmitter chain includes a single or dual digital up converters (DUCs) supporting up to 1200-MHz combined signal bandwidth. The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd or 3rd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. The feedback path includes an 25-dB range DSA driving a 3-GSPS RF sampling ADC, followed by a DDC with up to 1200-MHz bandwidth.

The AFE8000 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling DACs and 10 RF sampling ADCs. Pin and programming compatible lower channel count versions (AFE8004 with 4TX and 4RX channels, AFE8010 with 10RX channels) are available to allow scalable system designs. Each receiver (RX) chain includes a 25 dB range DSA (Digital Step Attenuator) followed by a 4 GSPS ADC (analog-to-digital converter). The 10 ADCs are connected to 8 receiver paths (1RX though 8RX) and 2 feedback paths (1FB and 2FB). The ADCs are identical between RX and FB but the digital down converter paths are different (the FB paths are capable of wider bandwidth and can be used as receivers). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 800 MHz of signal BW for 8 channels or 400 MHz for 8 channels in addition to 800 MHz for 2 channels. Each transmitter (TX) chain includes a single or dual digital up converter (DUC). Supporting up to 800 MHz signal bandwidth for eight channels or 1200 MHz for 4 channels. The output of the DUCs drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps. The AFE8000 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling DACs and 10 RF sampling ADCs. Pin and programming compatible lower channel count versions (AFE8004 with 4TX and 4RX channels, AFE8010 with 10RX channels) are available to allow scalable system designs. Each receiver (RX) chain includes a 25 dB range DSA (Digital Step Attenuator) followed by a 4 GSPS ADC (analog-to-digital converter). The 10 ADCs are connected to 8 receiver paths (1RX though 8RX) and 2 feedback paths (1FB and 2FB). The ADCs are identical between RX and FB but the digital down converter paths are different (the FB paths are capable of wider bandwidth and can be used as receivers). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 800 MHz of signal BW for 8 channels or 400 MHz for 8 channels in addition to 800 MHz for 2 channels. Each transmitter (TX) chain includes a single or dual digital up converter (DUC). Supporting up to 800 MHz signal bandwidth for eight channels or 1200 MHz for 4 channels. The output of the DUCs drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps.

The AFE8000 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling DACs and 10 RF sampling ADCs. Pin and programming compatible lower channel count versions (AFE8004 with 4TX and 4RX channels, AFE8010 with 10RX channels) are available to allow scalable system designs. Each receiver (RX) chain includes a 25 dB range DSA (Digital Step Attenuator) followed by a 4 GSPS ADC (analog-to-digital converter). The 10 ADCs are connected to 8 receiver paths (1RX though 8RX) and 2 feedback paths (1FB and 2FB). The ADCs are identical between RX and FB but the digital down converter paths are different (the FB paths are capable of wider bandwidth and can be used as receivers). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 800 MHz of signal BW for 8 channels or 400 MHz for 8 channels in addition to 800 MHz for 2 channels. Each transmitter (TX) chain includes a single or dual digital up converter (DUC). Supporting up to 800 MHz signal bandwidth for eight channels or 1200 MHz for 4 channels. The output of the DUCs drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps. The AFE8000 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling DACs and 10 RF sampling ADCs. Pin and programming compatible lower channel count versions (AFE8004 with 4TX and 4RX channels, AFE8010 with 10RX channels) are available to allow scalable system designs. Each receiver (RX) chain includes a 25 dB range DSA (Digital Step Attenuator) followed by a 4 GSPS ADC (analog-to-digital converter). The 10 ADCs are connected to 8 receiver paths (1RX though 8RX) and 2 feedback paths (1FB and 2FB). The ADCs are identical between RX and FB but the digital down converter paths are different (the FB paths are capable of wider bandwidth and can be used as receivers). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 800 MHz of signal BW for 8 channels or 400 MHz for 8 channels in addition to 800 MHz for 2 channels. Each transmitter (TX) chain includes a single or dual digital up converter (DUC). Supporting up to 800 MHz signal bandwidth for eight channels or 1200 MHz for 4 channels. The output of the DUCs drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps.

The AFE8000 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling DACs and 10 RF sampling ADCs. Pin and programming compatible lower channel count versions (AFE8004 with 4TX and 4RX channels, AFE8010 with 10RX channels) are available to allow scalable system designs. Each receiver (RX) chain includes a 25 dB range DSA (Digital Step Attenuator) followed by a 4 GSPS ADC (analog-to-digital converter). The 10 ADCs are connected to 8 receiver paths (1RX though 8RX) and 2 feedback paths (1FB and 2FB). The ADCs are identical between RX and FB but the digital down converter paths are different (the FB paths are capable of wider bandwidth and can be used as receivers). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 800 MHz of signal BW for 8 channels or 400 MHz for 8 channels in addition to 800 MHz for 2 channels. Each transmitter (TX) chain includes a single or dual digital up converter (DUC). Supporting up to 800 MHz signal bandwidth for eight channels or 1200 MHz for 4 channels. The output of the DUCs drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps. The AFE8000 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling DACs and 10 RF sampling ADCs. Pin and programming compatible lower channel count versions (AFE8004 with 4TX and 4RX channels, AFE8010 with 10RX channels) are available to allow scalable system designs. Each receiver (RX) chain includes a 25 dB range DSA (Digital Step Attenuator) followed by a 4 GSPS ADC (analog-to-digital converter). The 10 ADCs are connected to 8 receiver paths (1RX though 8RX) and 2 feedback paths (1FB and 2FB). The ADCs are identical between RX and FB but the digital down converter paths are different (the FB paths are capable of wider bandwidth and can be used as receivers). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 800 MHz of signal BW for 8 channels or 400 MHz for 8 channels in addition to 800 MHz for 2 channels. Each transmitter (TX) chain includes a single or dual digital up converter (DUC). Supporting up to 800 MHz signal bandwidth for eight channels or 1200 MHz for 4 channels. The output of the DUCs drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps.

The AFE8030 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling transmitter chains, eight RF sampling receiver chains and two separate RF front end for the auxiliary chains (feedback paths). The high dynamic range of the transmitter and receiver chains allows generating and receiving 3G, 4G and 5G signals for wireless base stations, while the wide bandwidth capability makes the AFE8030 devices suitable for multi-band 4G and 5G base stations. Each receiver chain includes a 31-dB range DSA (Digital Step Attenuator), followed by a 4-GSPS ADC (analog-to-digital converter). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provides up to 400 MHz of combined signal BW in 8-channel mode and 800 MHz in 4-channel mode. In TDD mode, the receiver channel can be configured to dynamically switching between traffic receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of re-using the same analog input for both purposes. Each transmitter chain includes a single or dual digital up converters (DUCs) supporting up to 800-MHz combined signal bandwidth (1200 MHz in 4-channel mode). The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. The feedback path includes a 25-dB range DSA driving a 4-GSPS RF sampling ADC, followed by a single wide or dual narrow DDC s with up to combined 800-MHz bandwidth (1200 MHz in 4-channel mode). The AFE8030 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling transmitter chains, eight RF sampling receiver chains and two separate RF front end for the auxiliary chains (feedback paths). The high dynamic range of the transmitter and receiver chains allows generating and receiving 3G, 4G and 5G signals for wireless base stations, while the wide bandwidth capability makes the AFE8030 devices suitable for multi-band 4G and 5G base stations. Each receiver chain includes a 31-dB range DSA (Digital Step Attenuator), followed by a 4-GSPS ADC (analog-to-digital converter). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The single or dual digital down converters (DDC) provides up to 400 MHz of combined signal BW in 8-channel mode and 800 MHz in 4-channel mode. In TDD mode, the receiver channel can be configured to dynamically switching between traffic receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of re-using the same analog input for both purposes. Each transmitter chain includes a single or dual digital up converters (DUCs) supporting up to 800-MHz combined signal bandwidth (1200 MHz in 4-channel mode). The output of the DUCs drives a 12-GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps. The feedback path includes a 25-dB range DSA driving a 4-GSPS RF sampling ADC, followed by a single wide or dual narrow DDC s with up to combined 800-MHz bandwidth (1200 MHz in 4-channel mode).

The AFE8092 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling transmitter chains, eight RF sampling receiver chains and two separate RF front end for the auxiliary chains (feedback paths). The high dynamic range of the transmitter and receiver chains allows generating and receiving 3G, 4G and 5G signals for wireless base stations, and the AFE8092 wide bandwidth capability is designed for multi-band 4G and 5G base stations. Each receiver chain includes a 31dB range DSA (Digital Step Attenuator), followed by a 3GSPS ADC (analog-to-digital converter). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The digital down converters (DDC) provides up to 800MHz of combined signal BW in 8-channel mode and 800MHz in 4-channel mode. In TDD mode, the receiver channel can be configured to dynamically switching between traffic receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of re-using the same analog input for both purposes. Each transmitter chain includes a digital up converter (DUC) supporting up to 800MHz combined signal bandwidth (1200MHz in 4-channel mode). The output of the DUC drives a 12GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40dB range and 1dB analog and 0.125dB digital steps. The feedback path includes a 25dB range DSA driving a 3GSPS RF sampling ADC, shared with receiver chain, followed by a DDC with up to 800MHz bandwidth (1200MHz in 4-channel mode). The AFE8092 is a high performance, wide bandwidth multi-channel transceiver, integrating eight RF sampling transmitter chains, eight RF sampling receiver chains and two separate RF front end for the auxiliary chains (feedback paths). The high dynamic range of the transmitter and receiver chains allows generating and receiving 3G, 4G and 5G signals for wireless base stations, and the AFE8092 wide bandwidth capability is designed for multi-band 4G and 5G base stations. Each receiver chain includes a 31dB range DSA (Digital Step Attenuator), followed by a 3GSPS ADC (analog-to-digital converter). Each receiver channel has analog peak power detectors and digital peak and power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. The digital down converters (DDC) provides up to 800MHz of combined signal BW in 8-channel mode and 800MHz in 4-channel mode. In TDD mode, the receiver channel can be configured to dynamically switching between traffic receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of re-using the same analog input for both purposes. Each transmitter chain includes a digital up converter (DUC) supporting up to 800MHz combined signal bandwidth (1200MHz in 4-channel mode). The output of the DUC drives a 12GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40dB range and 1dB analog and 0.125dB digital steps. The feedback path includes a 25dB range DSA driving a 3GSPS RF sampling ADC, shared with receiver chain, followed by a DDC with up to 800MHz bandwidth (1200MHz in 4-channel mode).

The AFE8220 implements the intermediate frequency (IF) sampling and processing functions of a digital radio receiver system. It is designed to be used with TI’s digital radio baseband processors and AM/FM tuners. The AFE8220 can also be programmed by the baseband processor for use in conventional AM/FM and digital radio. This unit includes two IF inputs with associated filtering and digital processing circuitry. The receive circuit oversamples the radio tuner IF output to reduce noise and improve dynamic range. The IF analog-to-digital converter (ADC) oversamples the IF input at rates up to 75 MHz. The AFE8220 then digitally mixes, filters, and decimates the signal to provide in-phase (I) and quadrature (Q) output signals to the baseband processor. A clock oscillator circuit is provided that can be used with an appropriate third-overtone crystal and external tank circuit to generate the sampling clock for the IF ADCs. The AFE8220 also includes a real-time clock and associated low-power oscillator circuit. Two auxiliary digital-to-analog converters (DACs) are included for system control functions. Other features include eight general-purpose input/output (GPIO) lines and programmable interrupt generators. The AFE8220 is available in a TQFP-100 (14 mm × 14 mm) package and uses a 3.3-V and a 1.8-V power supply. An onboard voltage regulator is included to optionally generate the 1.8-V digital supply for the AFE8220. The AFE8220 implements the intermediate frequency (IF) sampling and processing functions of a digital radio receiver system. It is designed to be used with TI’s digital radio baseband processors and AM/FM tuners. The AFE8220 can also be programmed by the baseband processor for use in conventional AM/FM and digital radio. This unit includes two IF inputs with associated filtering and digital processing circuitry. The receive circuit oversamples the radio tuner IF output to reduce noise and improve dynamic range. The IF analog-to-digital converter (ADC) oversamples the IF input at rates up to 75 MHz. The AFE8220 then digitally mixes, filters, and decimates the signal to provide in-phase (I) and quadrature (Q) output signals to the baseband processor. A clock oscillator circuit is provided that can be used with an appropriate third-overtone crystal and external tank circuit to generate the sampling clock for the IF ADCs. The AFE8220 also includes a real-time clock and associated low-power oscillator circuit. Two auxiliary digital-to-analog converters (DACs) are included for system control functions. Other features include eight general-purpose input/output (GPIO) lines and programmable interrupt generators. The AFE8220 is available in a TQFP-100 (14 mm × 14 mm) package and uses a 3.3-V and a 1.8-V power supply. An onboard voltage regulator is included to optionally generate the 1.8-V digital supply for the AFE8220.