ADS9218中文资料德州仪器数据手册PDF规格书

1 Features

• High-speed sampling rate: 20MSPS/ch

– ADS9229: 20MSPS/ch, 230mW/ch

– ADS9228: 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 (–3dB):

– ADS9229 and ADS9228: 90MHz

– ADS9227: 45MHz

• 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.