Texas Instruments ADS127L18 24-Bit ADCs

Texas Instruments ADS127L18 24-Bit Analog to Digital Converters (ADCs) are delta-sigma (ΔΣ) devices based on the single-channel ADS127L11. These devices provide a sampling of eight channels with data rates up to 512kSPS (wideband filter mode) and 1365kSPS (low-latency filter mode). The ADS127L18 ADCs operate at a 2.85V to 5.5V analog supply voltage range. These devices offer an excellent combination of AC performance and DC precision with low power consumption. The ADS127L18 ADCs are offered in identical 7mm x 7mm VQFN packages that permit drop-in expandability. These 24-bit devices operate over the -40°C to 125°C temperature range. The ADS127L18 ADCs are ideal for test and measurement, factory automation and control, aerospace and defense, medical, and grid infrastructure.

Features

Measures eight channels
Up to 512kSPS wideband filter mode
Up to 1365kSPS low-latency filter mode
Power-scalable speed modes:
- 512kSPS maximum speed
  - 165mW
- High-speed 400kSPS
  - 128mW
- Mid-speed 200kSPS
  - 74mW
- Low-speed 50kSPS
  - 24mW

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
2.85V to 5.5V analog supply voltage range

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