1 Features

? High-speed sampling rate: 20MSPS/ch

– ADS9229 (advance information): 20MSPS/ch,

187mW/ch

– ADS9228 (preview): 10MSPS/ch, 146mW/ch

– ADS9227: 5MSPS/ch, 95mW/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: ±0.3LSB, DNL: ±0.3LSB

– SNR: 93.9dB

? Wide input bandwidth:

– ADS9229: 135MHz (–3dB)

– ADS9228: 90MHz (–3dB)

– ADS9227: 45MHz (–3dB)

? Serial LVDS interface:

– SDR and DDR output modes

– Synchronous clock and data output

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

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

the signal chain, reduces power consumption for

precision applications, and supports high-frequency

signals beyond 1MHz. By not requiring an external

decoupling capacitor, the integrated ADC reference

buffer is optimized for wide bandwidth applications.

The ADS922x uses a serial LVDS (SLVDS) data

interface that enables high-speed digital interface

while minimizing digital switching noise. Read the

dual-channel ADC data using separate SLVDS

outputs per ADC channel or one SLVDS output for

both ADC channels.