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ADS9813

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

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Data sheet

ADS9813

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Product details

Resolution (Bits) 18 Sample rate (max) (ksps) 2000 Number of input channels 8 Interface type 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 (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
Resolution (Bits) 18 Sample rate (max) (ksps) 2000 Number of input channels 8 Interface type 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 (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
VQFN (RSH) 56 49 mm² 7 x 7
  • 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:
    • 21kHz and 400kHz
  • 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: ±1LSB
    • SNR: 92.3dBFS, THD: –114dB
  • 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:
    • 21kHz and 400kHz
  • 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: ±1LSB
    • SNR: 92.3dBFS, THD: –114dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C

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.

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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* Data sheet ADS9813 18-Bit, 2MSPS, 8-Channel, Simultaneous-Sampling ADC With Integrated Analog Front-End datasheet PDF | HTML 10 Apr 2024
EVM User's guide ADS9813EVM and ADS9817EVM User's Guide (Rev. B) PDF | HTML 23 Jan 2024
Certificate ADS9813EVM EU Declaration of Conformity (DoC) 18 Sep 2023

Design & development

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Evaluation board

ADS9813EVM — ADS9813 evaluation module

The ADS9813 evaluation module (EVM) is a platform for evaluating the performance of the ADS9813 device, an 8-channel, 18-bit 2MSPS per channel simultaneous-sampling SAR ADC with integrated analog front-end and ADC reference. The ADS9813EVM includes a standard FMC connector that can interface with (...)
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Simulation model

ADS98xx IBIS Model

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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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