1 Features
1• 32-Channel AFE for Ultrasound Applications:
– LNA, Attenuator, LPF, ADC, CW Mixer, and
Digital I/Q Demodulator
– Digital Time Gain Compensation (DTGC)
– Total Gain Range: 0 dB to 48 dB
• Low-Noise Amplifier (LNA) With Programmable
Gain:
– Low Current Noise of 1pA/rtHz
– Gain: 21 dB, 18 dB, and 15 dB
– Linear Input Range: up to 700 mVPP
• Programmable Attenuator (ATTEN):
– Attenuation Range (Steps of 0.125 dB):
0 to 36 dB
– Digital TGC Engine
• Programmable Gain Amplifier (PGA):
– Gain: 21 dB, 24 dB, and 27 dB
• Third-Order, Linear-Phase, Low-Pass Filter (LPF):
– Cut-off Frequency From 10 MHz to 25 MHz
• 16 ADCs Converting at 12-Bit, 80 MSPS or 10-Bit,
100 MSPS:
– Each ADC Converts Two Sets of Inputs at Half
Rate
– 12-Bit Mode: 72-dBFS SNR
– 10-Bit Mode: 61-dBFS SNR
• TGC Mode Power w/o digital I/Q Demodulator:
– Lowest Power of 18.5 mW/Ch in Low Power
Mode, 4 nV/rtHz, 10-Bit, 20 MSPS, LVDS (2x
rate)
– 27.8 mW/Ch at 3 nV/rtHz in Low Noise Mode
at 12-Bit, 40 MSPS
– 24.4 mW/Ch at 4 nV/rtHz in Low Power Mode
at 12-Bit, 40 MSPS
• Excellent Device-to-Device Gain Matching:
– ±0.5 dB (Typical)
• Harmonic Distortion: –55 dBc level
• Fast and Consistent Overload Recovery
• Continuous Wave (CW) Path With:
– Low Close-In Phase Noise of –148 dBc/Hz at
1-kHz Frequency Offset off 5-MHz Carrier
– Power Consumption w/o Signal: 10 mW/Ch
– Phase Resolution: λ/16
– 12-dB Suppression on Third and Fifth
Harmonics
• Digital I/Q demodulator:
– Decimation Filter M = 1 to 63
– Data Throughput Reduction After Decimation
– On-Chip RAM with 32 Preset Profiles
• LVDS Interface with a Speed Up to 1-Gbps
• Small Package: 15-mm × 15-mm NFBGA-289

2 Applications
• Medical Ultrasound Imaging
• Nondestructive Evaluation Equipment
• Sonar Imaging Equipment
• In-Probe Electronics

3 Description
The AFE58JD32LP is a highly integrated, analog
front-end (AFE) solution specifically designed for
portable ultrasound systems where high performance,
low power, and small size are required.