ADS922X中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

1 Features

? High-speed sampling rate: 10 MSPS/ch

– ADS9228 (preview): 10 MSPS/ch

– ADS9227: 5 MSPS/ch

? 2-channel, simultaneous sampling

? Feature integration:

– Integrated ADC driver

– Integrated precision reference

– Common-mode voltage output buffer

? High-performance

– 16-bit no-missing-codes

– INL: ±0.3 LSB, DNL: ±0.3 LSB

– SNR: 93.5 dB, THD: –120 dB at fIN = 2 kHz

? Wide input bandwidth:

– ADS9228: 90 MHz (–3 dB)

– ADS9227: 45 MHz (–3 dB)

? Low-power 141 mW/ch at 10 MSPS/ch

? Serial LVDS interface:

– SDR and DDR output modes

– Synchronous clock and data output

? Extended operating range: –40°C to 125°C

? 6 mm × 6 mm VQFN package

2 Applications

? Power analyzers

? Source measurement units (SMU)

? Marine equipment

? Servo drive position feedback

? DC power supplies, AC sources, electronic loads

3 Description

The ADS922x is a family of 16-bit, high-speed, dualchannel,

simultaneous-sampling, analog-to-digital

converter (ADC) with an integrated driver for the ADC

inputs. The integrated ADC driver simplifies external

signal-chain that can be optimized for low-power and

high-precision. The ADC consumes only 141 mW/ch

at 10 MSPS/ch and the power consumption scales

with lower sampling rates.

The ADS922x uses a serial LVDS (SLVDS) data

interface that enables high-speed digital interface

while minimizing digital switching noise. The dualchannel

ADC data can be read using separate SLVDS

outputs per ADC channel or one SLVDS output for

both ADC channels.