Texas Instruments AFE5805ZCF

Description
The AFE5805 is a fully integrated, 8-channel analog front-end specifically designed for ultrasound systems that require low power and small size. It consists of 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.

Features
Ultra-low, full-channel noise:
0.85nV/√Hz (TGC)
1.1nV/√Hz (CW)
Low power:
122mW/Channel (40MSPS)
74mW/Channel (CW Mode)
Low-noise pre-amp (LNA):
0.75nV/√Hz
20dB fixed gain
250mVpp linear input range
Variable-gain amplifier:
Gain control range: 46dB
PGA gain settings: 20dB, 25dB, 27dB, 30dB
Low-pass filter:
Selectable BW: 10MHz, 15MHz
2nd-order
Gain error: ±0.5dB
Channel matching: ±0.25dB
Distortion, HD2: -65dBFS at 5MHz
Clamping control
Fast overload recovery: two clock cycles
12-bit analog-to-digital converter:
10MSPS to 50MSPS
69.5dB SNR at 10MHz
Serial LVDS interface
Integrated CW switch matrix

Applications
Medical imaging, ultrasound
Portable systems