Analog Devices

The AD9736, AD9735, and AD9734 are high performance, high frequency DACs that provide sample rates of up to 1200 MSPS, permitting multicarrier generation up to their Nyquist frequency. The AD9736 is the 14-bit member of the family, while the AD9735 and the AD9734 are the 12-bit and 10-bit members, respectively. They include a serial peripheral interface (SPI) port that provides for programming of many internal parameters and enables readback of status registers.A reduced-specification LVDS interface is utilized to achieve the high sample rate. The output current can be programmed over a range of 8.66 mA to 31.66 mA. The AD973x family is manufactured on a 0.18 μm CMOS process and operates from 1.8 V and 3.3 V supplies for a total power consumption of 380 mW in bypass mode. It is supplied in a 160-lead chip scale ball grid array for reduced package parasitics.Product HighlightsLow noise and intermodulation distortion (IMD) features enable high quality synthesis of wideband signals at intermediate frequencies up to 600 MHz.Double data rate (DDR) LVDS data receivers support the maximum conversion rate of 1200 MSPS.Direct pin programmability of basic functions or SPI port access offers complete control of all AD973x family functions.Manufactured on a CMOS process, the AD973x family uses a proprietary switching technique that enhances dynamic performance.The current output(s) of the AD9736 family are easily configured for single-ended or differential circuit topologies.ApplicationsBroadband communications systemsCellular infrastructure (digital predistortion)Point-to-point wirelessCMTS/VODInstrumentation, automatic test equipmentRadar, avionics

The AD9736, AD9735, and AD9734 are high performance, high frequency DACs that provide sample rates of up to 1200 MSPS, permitting multicarrier generation up to their Nyquist frequency. The AD9736 is the 14-bit member of the family, while the AD9735 and the AD9734 are the 12-bit and 10-bit members, respectively. They include a serial peripheral interface (SPI) port that provides for programming of many internal parameters and enables readback of status registers.A reduced-specification LVDS interface is utilized to achieve the high sample rate. The output current can be programmed over a range of 8.66 mA to 31.66 mA. The AD973x family is manufactured on a 0.18 μm CMOS process and operates from 1.8 V and 3.3 V supplies for a total power consumption of 380 mW in bypass mode. It is supplied in a 160-lead chip scale ball grid array for reduced package parasitics.Product HighlightsLow noise and intermodulation distortion (IMD) features enable high quality synthesis of wideband signals at intermediate frequencies up to 600 MHz.Double data rate (DDR) LVDS data receivers support the maximum conversion rate of 1200 MSPS.Direct pin programmability of basic functions or SPI port access offers complete control of all AD973x family functions.Manufactured on a CMOS process, the AD973x family uses a proprietary switching technique that enhances dynamic performance.The current output(s) of the AD9736 family are easily configured for single-ended or differential circuit topologies.ApplicationsBroadband communications systemsCellular infrastructure(digital predistortion)Point-to-point wirelessCMTS/VODInstrumentation, automatic test equipmentRadar, avionics

The AD9737A/AD9739Aare 11-bit and 14-bit, 2.5 GSPS high performance RF DACs that are capable of synthesizing wideband signals from dc up to 3 GHz. The AD9737A/AD9739A are pin and functionally compatible with the AD9739 with the exception that the AD9737A/AD9739A do not support synchronization or RZ mode, and are specified to operate between 1.6 GSPS and 2.5 GSPS.By elimination of the synchronization circuitry, some nonideal artifacts such as images and discrete clock spurs remain stationary on the AD9737A/AD9739A between power-up cycles, thus allowing for possible system calibration. AC linearity and noise performance remain the same between the AD9739 and the AD9737A/AD9739A.The inclusion of on-chip controllers simplifies system integration. A dual-port, source synchronous, LVDS interface simplifies the digital interface with existing FGPA/ASIC technology. On-chip controllers are used to manage external and internal clock domain variations over temperature to ensure reliable data transfer from the host to the DAC core. A serial peripheral interface (SPI) is used for device configuration as well as readback of status registers.The AD9737A/AD9739A are manufactured on a 0.18 µm CMOS process and operate from 1.8 V and 3.3 V supplies. They are supplied in a 160-ball chip scale ball grid array for reduced package parasitics.Product HighlightsAbility to synthesize high quality wideband signals with bandwidths of up to 1.25 GHz in the first or second Nyquist zone.A proprietary quad-switch DAC architecture provides exceptional ac linearity performance while enabling mixmode operation.A dual-port, double data rate, LVDS interface supports the maximum conversion rate of 2500 MSPS.On-chip controllers manage external and internal clock domain skews.Programmable differential current output with an 8.66 mA to 31.66 mA range.ApplicationsBroadband communications systemsDOCSIS CMTS systemsMilitary jammersInstrumentation, automatic test equipmentRadar, avionics

TheAD9737A/AD9739A are 11-bit and 14-bit, 2.5 GSPS high performance RF DACs that are capable of synthesizing wideband signals from dc up to 3 GHz. The AD9737A/AD9739A are pin and functionally compatible with the AD9739 with the exception that the AD9737A/AD9739A do not support synchronization or RZ mode, and are specified to operate between 1.6 GSPS and 2.5 GSPS.By elimination of the synchronization circuitry, some nonideal artifacts such as images and discrete clock spurs remain stationary on the AD9737A/AD9739A between power-up cycles, thus allowing for possible system calibration. AC linearity and noise performance remain the same between the AD9739 and the AD9737A/AD9739A.The inclusion of on-chip controllers simplifies system integration. A dual-port, source synchronous, LVDS interface simplifies the digital interface with existing FGPA/ASIC technology. On-chip controllers are used to manage external and internal clock domain variations over temperature to ensure reliable data transfer from the host to the DAC core. A serial peripheral interface (SPI) is used for device configuration as well as readback of status registers.The AD9737A/AD9739A are manufactured on a 0.18 µm CMOS process and operate from 1.8 V and 3.3 V supplies. They are supplied in a 160-ball chip scale ball grid array for reduced package parasitics.Product HighlightsAbility to synthesize high quality wideband signals with bandwidths of up to 1.25 GHz in the first or second Nyquist zone.A proprietary quad-switch DAC architecture provides exceptional ac linearity performance while enabling mixmode operation.A dual-port, double data rate, LVDS interface supports the maximum conversion rate of 2500 MSPS.On-chip controllers manage external and internal clock domain skews.Programmable differential current output with an 8.66 mA to 31.66 mA range.ApplicationsBroadband communications systemsDOCSIS CMTS systemsMilitary jammersInstrumentation, automatic test equipmentRadar, avionics

The AD9740 is a 10-bit resolution, wideband, third generation member of the TxDAC series of high performance, low power CMOS digital-to-analog converters (DACs). The TxDAC family, consisting of pin-compatible 8-, 10-, 12-, and 14-bit DACs, is specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface options, small outline package, and pinout, providing an upward or downward component selection path based on performance, resolution, and cost. The AD9740 offers exceptional ac and dc performance while supporting update rates up to 210 MSPS.The AD9740’s low power dissipation makes it well suited for portable and low power applications. Its power dissipation can be further reduced to 60 mW with a slight degradation in performance by lowering the full-scale current output. In addition, a power-down mode reduces the standby power dissipation to approximately 15 mW. A segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance.Edge-triggered input latches and a 1.2 V temperature-compensated band gap reference have been integrated to provide a complete monolithic DAC solution. The digital inputs support 3 V CMOS logic families.PRODUCT HIGHLIGHTSThe AD9740 is the 10-bit member of the pin-compatible TxDAC family, which offers excellent INL and DNL performance.Data input supports twos complement or straight binary data coding.High speed, single-ended CMOS clock input supports 210 MSPS conversion rate.Low power: Complete CMOS DAC function operates on 135 mW from a 2.7 V to 3.6 V single supply. The DAC full-scale current can be reduced for lower power operation, and a sleep mode is provided for low power idle periods.On-chip voltage reference: The AD9740 includes a 1.2 V temperature-compensated band gap voltage reference.Industry-standard 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages.APPLICATIONSWideband communication transmit channelDirect IFBase stationsWireless local loopsDigital radio linksDirect digital synthesis (DDS)Instrumentation

The AD9741/AD9743/AD9745/AD9746/AD9747 are pin-compatible, high dynamic range, dual digital-to-analog converters (DACs) with 8-/10-/12-/ 14-/16-bit resolutions and sample rates of up to 250 MSPS. The devices include specific features for direct conversion transmit applications, including gain and offset compensation, and they interface seamlessly with analog quadrature modulators, such as the ADL5370.A proprietary, dynamic output architecture permits synthesis of analog outputs even above Nyquist by shifting energy away from the fundamental and into the image frequency.Full programmability is provided through a serial peripheral interface (SPI) port. In addition, some pin-programmable features are offered for those applications without a controller.Product HighlightsLow noise and intermodulation distortion (IMD) enables high quality synthesis of wideband signals.Proprietary switching output for enhanced dynamic performance.Programmable current outputs and dual auxiliary DACs provide flexibility and system enhancements.ApplicationsWireless infrastructure:WCDMA, CDMA2000, TD-SCDMA, WiMAXWideband communications:LMDS/MMDS, point-to-pointnstrumentation:RF signal generators, arbitrary waveform generators

The AD97421 is a 12-bit resolution, wideband, third generation member of the TxDAC series of high performance, low power CMOS digital-to-analog converters (DACs). The TxDAC family, consisting of pin-compatible 8-, 10-, 12-, and 14-bit DACs, is specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface options, small outline package, and pinout, providing an upward or downward component selection path based on performance, resolution, and cost. The AD9742 offers exceptional ac and dc performance while supporting update rates up to 210 MSPS.The AD9742’s low power dissipation makes it well suited for portable and low power applications. Its power dissipation can be further reduced to a mere 60 mW with a slight degradation in performance by lowering the full-scale current output. Also, a power-down mode reduces the standby power dissipation to approximately 15 mW. A segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance.Edge-triggered input latches and a 1.2 V temperature compensated band gap reference have been integrated to provide a complete monolithic DAC solution. The digital inputs support 3 V CMOS logic families.PRODUCT HIGHLIGHTSThe AD9742 is the 12-bit member of the pin-compatible TxDAC family, which offers excellent INL and DNL performance.Data input supports twos complement or straight binary data coding.High speed, single-ended CMOS clock input supports 210 MSPS conversion rate.Low power: Complete CMOS DAC function operates on 135 mW from a 2.7 V to 3.6 V single supply. The DAC full-scale current can be reduced for lower power operation, and a sleep mode is provided for low power idle periods.On-chip voltage reference: The AD9742 includes a 1.2 V temperature compensated band gap voltage reference.Industry-standard 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages.APPLICATIONSWideband communication transmit channel:Direct IFBase stationsWireless local loopsDigital radio linksDirect digital synthesis (DDS)Instrumentation