ADS921X中文资料德州仪器数据手册PDF规格书

1 Features

• High-speed, 10-MSPS/ch sampling rate

– ADS9218: 10 MSPS/ch

– ADS9217: 5 MSPS/ch

• 2-channel, simultaneous sampling

• Feature integration:

– Integrated ADC driver

– Integrated precision reference

– Common-mode voltage output buffer

• High-performance

– 18-bit no missing codes

– INL: ±1 LSB, DNL: ±0.75 LSB

– SNR: 95 dB, THD: –115 dB at fIN = 2 kHz

• Wide input bandwidth:

– ADS9218: 90 MHz (–3 dB)

– ADS9217: 45 MHz (–3 dB)

• Low-power 180 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 ADS921x is an 18-bit, 10-MSPS/ch, dualchannel,

simultaneous-sampling, analog-to-digital

converter (ADC) with an integrated driver for the

ADC inputs. The ADC consumes only 180 mW/ch at

10 MSPS/ch and the power consumption scales with

lower sampling rates.

The ADS921x uses a serial low-voltage differential

signaling (SLVDS) data interface that enables highspeed

digital interface while minimizing digital

switching noise. The device comes in a space-saving,

6-mm × 6-mm, VQFN package.

The ADS921x is specified for the extended

temperature range of –40°C to +125°C.

INFORMATION