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ADS8168
  • ADS8168
  • ADS8168
  • ADS8168

ADS8168

ACTIVE

16-bit, 1-MSPS, 8-ch SAR ADC with VREF, VREF buffer and direct sensor interface

Texas Instruments ADS8168 Product Info

1 April 2026 4

Parameters

Resolution (Bits)

16

Sample rate (max) (ksps)

1000

Number of input channels

8

Interface type

Enhanced SPI, SPI

Architecture

SAR

Input type

Pseudo-Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

5

Input voltage range (min) (V)

0

Features

Comparator

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

30

Analog supply voltage (min) (V)

3

Analog supply voltage (max) (V)

5.5

SNR (dB)

92

Digital supply (min) (V)

1.65

Digital supply (max) (V)

5.5

Package

VQFN (RHB)-32-25 mm² 5 x 5

Features

  • Compact low-power data acquisition system:
    • MUX breakout enables single external driver amplifier
    • 16-bit SAR ADC
    • Low-drift integrated reference and buffer
    • 0.5 × VREF output for analog input DC biasing
  • Excellent AC and DC performance:
    • SNR: 92dB, THD: –110dB
    • INL: ±0.3LSB, 16-bit no missing codes
  • Multiplexer with channel sequencer:
    • Multiple channel-sequencing options:
      • Manual mode, on-the-fly mode, auto sequence mode, custom channel sequencing
    • Fast response time with on-the-fly mode
  • System monitoring features:
    • Per channel programmable window comparator
    • False trigger avoidance with programmable hysteresis
  • Enhanced-SPI digital interface:
    • 1MSPS throughput with 16MHz SCLK
    • High-speed, 50MHz digital interface
  • Wide operating range:
    • External VREF input range: 2.5V to 5V
    • AVDD from 3V to 5.5V
    • DVDD from 1.65V to 5.5V
    • –40°C to +125°C temperature range
  • Compact low-power data acquisition system:
    • MUX breakout enables single external driver amplifier
    • 16-bit SAR ADC
    • Low-drift integrated reference and buffer
    • 0.5 × VREF output for analog input DC biasing
  • Excellent AC and DC performance:
    • SNR: 92dB, THD: –110dB
    • INL: ±0.3LSB, 16-bit no missing codes
  • Multiplexer with channel sequencer:
    • Multiple channel-sequencing options:
      • Manual mode, on-the-fly mode, auto sequence mode, custom channel sequencing
    • Fast response time with on-the-fly mode
  • System monitoring features:
    • Per channel programmable window comparator
    • False trigger avoidance with programmable hysteresis
  • Enhanced-SPI digital interface:
    • 1MSPS throughput with 16MHz SCLK
    • High-speed, 50MHz digital interface
  • Wide operating range:
    • External VREF input range: 2.5V to 5V
    • AVDD from 3V to 5.5V
    • DVDD from 1.65V to 5.5V
    • –40°C to +125°C temperature range

Description

The ADS816x is a family of 16-bit, 8-channel, high-precision successive approximation register (SAR) analog-to-digital converters (ADCs). The ADCs operate from a single 5V supply with a 1MSPS (ADS8168), 500kSPS (ADS8167), and 250kSPS (ADS8166) total throughput.

The input multiplexer supports extended settling time, which makes driving the analog inputs easier. The output of the multiplexer and ADC analog inputs are available as device pins. This configuration allows one ADC driver op amp to be used for all eight analog inputs of the multiplexer.

The ADS816x features a digital window comparator with programmable high and low alarm thresholds per analog input channel. The single op-amp solution with programmable alarm thresholds enables low power, low cost, and smallest form-factor applications.

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