1 Features

? Simultaneously measure four or eight channels

? Wideband filter mode: up to 512kSPS

? Low-latency filter mode: up to 1365kSPS

? Power-scalable speed modes:

– Max speed: 512kSPS

? 83mW (ADS127L14)

? 165mW (ADS127L18)

– High speed: 400kSPS

? 64mW (ADS127L14)

? 128mW (ADS127L18)

– Mid speed: 200kSPS

? 37mW (ADS127L14)

? 74mW (ADS127L18)

– Low speed: 50kSPS

? 12mW (ADS127L14)

? 24mW (ADS127L18)

? AC performance with DC precision:

(High-Speed Mode)

– Dynamic range at 200kSPS: 112dB (typical)

– THD: –118dB (typical)

– INL: 1ppm of FSR (typical)

– Offset drift: 10nV/°C (typical)

– Gain drift: 0.5ppm/°C (typical)

? Precharge buffered signal inputs

? Programmable by pin setting or SPI

? Frame-sync port for output data

? Internal or external clock operation

? Analog supply voltage: 2.85V to 5.5V

2 Applications

? Test and measurement:

– Data acquisition (DAQ)

– Shock and vibration instruments

– Acoustics and dynamic strain gauges

? Factory automation and control:

– Condition monitoring

? Aerospace and defense:

– Sonar

? Medical:

– Electroencephalograms (EEG)

? Grid Infrastructure:

– Power quality analyzers

3 Description

The ADS127L14 (quad) and ADS127L18 (octal) are

24-bit, delta-sigma (ΔΣ), analog-to-digital converters

(ADCs) based on the single-channel ADS127L11.

The devices provide simultaneous sampling of four

or eight channels with data rates up to 512kSPS

(wideband filter mode) and 1365kSPS (low-latency

filter mode).