AD9271 is an eight-channel LNA/VGA/AAF/ADC and crosspoint switch with SPI interface, supports 10 MSPS to 50 MSPS sampling rate, SNR is 70 dB, SFDR is 80 dB.
The AD9271 is an eight‑channel octal LNA/VGA/AAF/ADC with an integrated crosspoint switch, designed for low‑cost, low‑power, small‑size applications such as medical imaging and automotive radar. It offers programmable gain, a third‑order antialiasing filter, and LVDS serial output, all in a 100‑lead, 16 mm × 16 mm TQFP package.
The document provides detailed specifications, functional block diagrams, pin descriptions, digital and switching parameters, power‑supply requirements, and design guidelines. Sections cover features, applications, timing diagrams, absolute maximum ratings, and recommended evaluation board usage.
| Number of channels | 8 |
|---|---|
| ADC resolution | 12 bits |
| Sample rate range | 10 MSPS to 50 MSPS |
| Supply voltages | AVDD = 1.8 V, DRVDD = 1.8 V, CWVDD = 3.3 V |
| Power consumption per channel (normal mode) | 150 mW at 40 MSPS |
The input‑referred noise is typically 1.1 nV/VHz at 5 MHz.
The full‑scale output is 2 V peak‑to‑peak differential.
AVDD = 1.8 V, DRVDD = 1.8 V, and CWVDD = 3.3 V.