Catalog
8-channel analog front end for ultrasound
Key Features
• 8-Channel Complete Analog Front-End:LNA, VCA, PGA, LPF, and ADCMode Control for Power/Noise Optimization:Low Noise (Full-Channel):0.89nV/√Hz(TGC Mode I)1.23nV/√Hz(TGC Mode II)1.03nV/√Hz(PW Mode)Ultra-Low Power:101mW/Channel (TGC Mode II)65mW/Channel (CW Mode)Low-Noise Pre-Amp (LNA):0.75nV/√Hz20dB Fixed Gain280mVPPLinear Input RangeVariable-Gain Amplifier:Gain Control Range: 46dBPGA Gain Settings: 20dB, 25dB, 27dB, 30dBLow-Pass Filter:Selectable BW: 12.5MHz, 17MHz2nd-Order, BesselGain Error: ±0.5dBChannel Matching: ±0.25dBClampingFast Overload Recovery: Two Clock Cycles12-Bit Analog-to-Digital Converter:10MSPS to 50MSPS69dB SNR at 10MHzSerial LVDS InterfaceIntegrated CW Switch Matrix15mm × 9mm, 135-BGA Package:Pb-Free (RoHS-Compliant) and Green8-Channel Complete Analog Front-End:LNA, VCA, PGA, LPF, and ADCMode Control for Power/Noise Optimization:Low Noise (Full-Channel):0.89nV/√Hz(TGC Mode I)1.23nV/√Hz(TGC Mode II)1.03nV/√Hz(PW Mode)Ultra-Low Power:101mW/Channel (TGC Mode II)65mW/Channel (CW Mode)Low-Noise Pre-Amp (LNA):0.75nV/√Hz20dB Fixed Gain280mVPPLinear Input RangeVariable-Gain Amplifier:Gain Control Range: 46dBPGA Gain Settings: 20dB, 25dB, 27dB, 30dBLow-Pass Filter:Selectable BW: 12.5MHz, 17MHz2nd-Order, BesselGain Error: ±0.5dBChannel Matching: ±0.25dBClampingFast Overload Recovery: Two Clock Cycles12-Bit Analog-to-Digital Converter:10MSPS to 50MSPS69dB SNR at 10MHzSerial LVDS InterfaceIntegrated CW Switch Matrix15mm × 9mm, 135-BGA Package:Pb-Free (RoHS-Compliant) and Green
Description
AI
The AFE5804 is a complete analog front-end device specifically designed for ultrasound systems that require low power and small size.
The AFE5804 consists of eight channels, including a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), low-pass filter (LPF), and a 12-bit analog-to-digital converter (ADC) with low voltage differential signaling (LVDS) data outputs.
The LNA gain is set for 20dB gain and has excellent noise and signal handling capabilities, including fast overload recovery. VCA gain can vary over a 46dB range with a 0V to 1.2V control voltage common to all channels of the AFE5804.
The PGA can be programmed for gains of 20dB, 25dB, 27dB, and 30dB. The internal low-pass filter can also be programmed to 12.5MHz or 17MHz.
The LVDS outputs of the ADC reduce the number of interface lines to an ASIC or FPGA, thereby enabling the high system integration densities desired for portable systems. The ADC can either be operated with internal or external references. The ADC also features a signal-to-noise ratio (SNR) enhancement mode that can be useful at high gains.
The AFE5804 is available in a 15mm × 9mm, 135-ball BGA package that is Pb-free (RoHS-compliant) and green. It is specified for operation from 0°C to +85°C.
The AFE5804 is a complete analog front-end device specifically designed for ultrasound systems that require low power and small size.
The AFE5804 consists of eight channels, including a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), low-pass filter (LPF), and a 12-bit analog-to-digital converter (ADC) with low voltage differential signaling (LVDS) data outputs.
The LNA gain is set for 20dB gain and has excellent noise and signal handling capabilities, including fast overload recovery. VCA gain can vary over a 46dB range with a 0V to 1.2V control voltage common to all channels of the AFE5804.
The PGA can be programmed for gains of 20dB, 25dB, 27dB, and 30dB. The internal low-pass filter can also be programmed to 12.5MHz or 17MHz.
The LVDS outputs of the ADC reduce the number of interface lines to an ASIC or FPGA, thereby enabling the high system integration densities desired for portable systems. The ADC can either be operated with internal or external references. The ADC also features a signal-to-noise ratio (SNR) enhancement mode that can be useful at high gains.
The AFE5804 is available in a 15mm × 9mm, 135-ball BGA package that is Pb-free (RoHS-compliant) and green. It is specified for operation from 0°C to +85°C.
