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ADS125H18
  • ADS125H18

ADS125H18

ACTIVE

16-channel, 24-bit, 1MSPS delta-sigma ADC with high voltage inputs (±10V) using a 5V supply

Texas Instruments ADS125H18 Product Info

1 April 2026 3

Parameters

Resolution (Bits)

24

Sample rate (max) (ksps)

1000

Number of input channels

16

Interface type

SPI

Architecture

Delta-Sigma

Input type

Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

20

Input voltage range (min) (V)

0

Features

50/60 Hz Rejection, Daisy-Chainable, GPIO, Oscillator, Small Size, Temp. Sensor

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

24

Analog supply voltage (min) (V)

3

Analog supply voltage (max) (V)

5.25

Digital supply (min) (V)

1.65

Digital supply (max) (V)

5.5

Package

VQFN (RHB)-36-25 mm² 5 x 5

Features

  • Programmable data rate up to 1.067MSPS
  • High impedance voltage divider with integrated precision matched resistors
  • Analog multiplexer with 17 independently selectable inputs:
    • Up to 8 fully differential inputs
    • Up to 16 single ended inputs
  • Rail-to-rail analog input buffer and reference buffer
  • Internal voltage reference, selectable output 2.5V or 4.096V
  • Fault detection and monitor circuits
  • General-Purpose I/Os
  • Internal Oscillator: 25.6MHz, 1% Accuracy
  • Channel auto-sequencer and FIFO buffer
  • Simultaneous 50Hz and 60Hz rejection at ≤ 25 SPS with low-latency digital filter
  • Power-scalable architecture with four speed modes
  • Programmable data rate up to 1.067MSPS
  • High impedance voltage divider with integrated precision matched resistors
  • Analog multiplexer with 17 independently selectable inputs:
    • Up to 8 fully differential inputs
    • Up to 16 single ended inputs
  • Rail-to-rail analog input buffer and reference buffer
  • Internal voltage reference, selectable output 2.5V or 4.096V
  • Fault detection and monitor circuits
  • General-Purpose I/Os
  • Internal Oscillator: 25.6MHz, 1% Accuracy
  • Channel auto-sequencer and FIFO buffer
  • Simultaneous 50Hz and 60Hz rejection at ≤ 25 SPS with low-latency digital filter
  • Power-scalable architecture with four speed modes

Description

The ADS125H18 is a high voltage input, multiplexed 8/16-Channel, 24 bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with data rates up to 1MSPS and is configurable to accept up to 8 fully differential analog inputs or up to 16 single-ended analog inputs. Each input comprises a high-impedance voltage divider with integrated precision matched resistors to scale down the input voltage to the input range of the ADC. The device offers an excellent combination of ac performance and dc precision with low power consumption.

The ADS125H18 is equipped with a channel auto-sequencer and a FIFO (first-in, first-out) buffer. The power-scalable architecture provides four speed modes to optimize data rate, resolution, and power consumption.

The small 5mm × 5mm VQFN package is designed for limited space applications. The device is fully specified for operation over the –40°C to +125°C temperature range.

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