1 Features

• High-speed and low-power:

– ADS9119: 20MSPS, 274mW

– ADS9118: 10MSPS, 83mW

– ADS9117: 5MSPS, 59mW

• Feature integration:

– Integrated ADC driver

– Integrated precision reference

– Common-mode voltage output buffer

• High performance:

– 18-bit no missing codes

– INL: ±0.8LSB, DNL: ±0.4LSB

– SNR: 95.5dB

• Wide input bandwidth:

– ADS9119 and ADS9118: 90MHz (–3dB)

– ADS9117: 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 ADS911x is a family of 18-bit, high-speed,

analog-to-digital converters (ADCs) 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 ADS911x uses a serial LVDS (SLVDS)

data interface that enables high-speed digital

communication 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.