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ADS9813
  • ADS9813
  • ADS9813
  • ADS9813
  • ADS9813

ADS9813

ACTIVE

Eight-channel, 18-bit, 2-MSPS/ch simultaneous sampling ADC with integrated analog front end

Texas Instruments ADS9813 Product Info

1 April 2026 4

Parameters

Resolution (Bits)

18

Sample rate (max) (ksps)

2000

Number of input channels

8

Interface type

Enhanced SPI, Serial CMOS

Architecture

SAR

Input type

Differential, Single-ended

Multichannel configuration

Simultaneous Sampling

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

12

Input voltage range (min) (V)

-12

Features

Over-Voltage Protection, PGA

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

220

Analog supply voltage (min) (V)

4.75

Analog supply voltage (max) (V)

5.25

SNR (dB)

92.3

Digital supply (min) (V)

1.75

Digital supply (max) (V)

1.85

Package

VQFN (RSH)-56-49 mm² 7 x 7

Features

  • 8-channel, 18-bit ADC with analog front-end:
    • Simultaneous sampling
    • Constant 1MΩ input impedance front-end
  • Programmable analog input ranges:
    • ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
    • Single-ended and differential inputs
    • Common-mode voltage range: ±12V
    • Input overvoltage protection: Up to ±18V
  • User-selectable analog input bandwidth:
    • 22.7kHz and 700kHz
  • Integrated low-drift precision references:
    • ADC reference: 4.096V
    • 2.5V reference output for external circuits
  • Excellent AC and DC performance at full-throughput:
    • DNL: ±0.35LSB, INL: ±0.8LSB
    • SNR: 90.3dBFS, THD: –113dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C
  • 8-channel, 18-bit ADC with analog front-end:
    • Simultaneous sampling
    • Constant 1MΩ input impedance front-end
  • Programmable analog input ranges:
    • ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
    • Single-ended and differential inputs
    • Common-mode voltage range: ±12V
    • Input overvoltage protection: Up to ±18V
  • User-selectable analog input bandwidth:
    • 22.7kHz and 700kHz
  • Integrated low-drift precision references:
    • ADC reference: 4.096V
    • 2.5V reference output for external circuits
  • Excellent AC and DC performance at full-throughput:
    • DNL: ±0.35LSB, INL: ±0.8LSB
    • SNR: 90.3dBFS, THD: –113dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C

Description

The ADS9813 is an eight-channel data acquisition (DAQ) system based on a simultaneous sampling, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS9813 features a complete analog front-end (AFE) for each channel with an input clamp. The device also features a 1MΩ input impedance and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. Configure the ADS9813 to accept ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V bipolar inputs with up to ±12V input common-mode voltage.

A digital interface supporting 1.2V to 1.8V operation enables the ADS9813 to be used without external voltage level translators.

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