● 16-Channel, AFE for Ultrasound Applications:
● Input Attenuator, LNA, LPF, ADC, and CW Mixer
● Optimized Signal Chains for TGC and CW Modes
● Digital Time Gain Compensation (DTGC)
● Total Gain Range: 6 dB to 45 dB
● Linear Input Range: 1 VPP
● Input Attenuator with DTGC:
● 8-dB to 0-dB Attenuation with 0.125-dB Step
● Supports Matched Impedance for:
● 50-Ω to 800-Ω Source Impedance
● Low-Noise Amplifier (LNA) with DTGC:
● 14-dB to 45-dB Gain with 0.125-dB Step
● Low Input Current Noise: 1.2 pA/√Hz
● 3rd-Order, Linear-Phase, Low-Pass Filter (LPF):
● 10 MHz, 15 MHz, 20 MHz, and 25 MHz
● Analog-to-Digital Converter (ADC) with Programmable Resolution:
● 14-Bit ADC: 75-dBFS Idle Channel SNR at 65 MSPS
● 12-Bit ADC: 72-dBFS Idle Channel SNR at 80 MSPS
● LVDS Interface with a Maximum Speed up to 1 GBPS
● Optimized for Noise and Power:
● 90 mW/Ch at 1 nV/√Hz, 65 MSPS, TGC Mode
● 55 mW/Ch at 1.45 nV/√Hz, 40 MSPS, TGC Mode
● 59 mW/Ch, CW Mode
● Excellent Device-to-Device Gain Matching: ±0.5 dB (Typical)
● Low Harmonic Distortion: -60-dBc Level
● Fast and Consistent Overload Recovery
● Continuous Wave (CW) Path with:
● Passive Mixer
● Low Close-In Phase Noise of -148 dBc/Hz at 1-kHz frequency
● Phase Resolution: λ / 16
● Supports 16X, 8X, 4X, and 1X CW Clocks
● 12-dB Suppression of 3rd and 5th Harmonics
● Small Package: 15-mm × 15-mm NFBGA-289
