1 Features

? Simultaneously measure four or eight channels

? Selectable speed and power modes:

– Max-speed mode: 512kSPS

? 91mW (ADS127L14)

? 173mW (ADS127L18)

– High-speed mode: 400kSPS

? 73mW (ADS127L14)

? 138mW (ADS127L18)

– Mid-speed mode: 200kSPS

? 42mW (ADS127L14)

? 75mW (ADS127L18)

– Low-speed mode: 50kSPS

? 17mW (ADS127L14)

? 25mW (ADS127L18)

? Excellent AC performance with DC precision:

– Dynamic range at 256kSPS: 111.5dB (typical)

– THD: –125dB (typical)

– INL: 0.4ppm of FS (typical)

– Offset drift: 50nV/°C (typical)

– Gain drift: 0.6ppm/°C (typical)

? Wideband or low-latency filter modes

? Up to 1.365MSPS in the low-latency filter mode

? Precharge buffered signal inputs

? Pin or SPI programmable

? Dedicated 100MHz CMOS data port

? Internal or external clock operation

? Analog supply voltage: 2.85V to 5.5V

? Package: 56-pin, 7mm × 7mm VQFN

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)