ADS8512

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12-Bit 40kSPS Low-Power Sampling ADC With Internal Reference and Serial Interface

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Product details

Parameters

Resolution (Bits) 12 Number of input channels 1 Sample rate (Max) (kSPS) 40 Interface type SPI Architecture SAR Input type Single-Ended Multi-channel configuration Rating Catalog Reference mode Ext, Int Input range (Max) (V) 10 Input range (Min) (V) -10 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 155 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 74 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 0.5 Digital supply (Min) (V) 4.75 Digital supply (Max) (V) 5.25 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

SOIC (DW) 16 77 mm² 7.52 x 10.28 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 40-kHz Minimum Sampling Rate
  • Very Low Power: 25 mW
  • ±3.33-V, ±5-V, ±10-V, 4-V, and 10-V Input Ranges
  • 73.9-dB SINAD with 10-kHz Input
  • ±0.5 LSB Max INL
  • ±0.5 LSB Max DNL, 12-Bit NMC
  • ±5-mV BPZ, ±2 ppm/°C BPZ Drift
  • 72-dB Min SINAD, 80-dB Min SFDR
  • Uses Internal or External 2.5-V Reference
  • No External Calibration Resistors Required
  • Single 5-V Analog Supply:
    • 32.5-mW Max Power Dissipation
    • 50-µW Max Power-Down Mode
  • SPI-Compatible Serial Port up to 20MHz, with Master/Slave Feature
  • Global CONV and 3-Stated Bus for Multi-Chip Simultaneous S/H Operation
  • Pin-Compatible with ADS7812 and 16-Bit ADS7813/8513
  • SO-16 Package
  • APPLICATIONS
    • Industrial Process Control
    • Test Equipment
    • Robotics
    • DSP Servo Control
    • Medical Instrumentation
    • Portable Data Acquisition Systems
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Description

The ADS8512 is a complete low-power, single 5-V supply, 12-bit sampling analog-to-digital (A/D) converter. It contains a complete 12-bit capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold (S/H), clock, reference, and serial data interface. The converter can be configured for a variety of input ranges including ±10 V, ±5 V, 0 V to 10 V, and 0.5 V to 4.5 V. A high-impedance, 0.3-V to 2.8-V input is also available with input impedance greater than 10 MΩ. For most input ranges, the input voltage can swing to 25 V or -25 V without damage to the converter.

An SPI-compatible serial interface allows data to be synchronized to an internal or external clock. The ADS8512 is specified at 40-kHz sampling rate over the -40°C to +85°C industrial temperature range.

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Technical documentation

= Featured
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet 12-Bit, 40kSPS, Low Power Sampling A/D Converter w/Int Ref and Serial Interface datasheet Jun. 17, 2008
White papers Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application notes Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar. 17, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SIMULATION MODELS Download
SLAM103.ZIP (42 KB) - IBIS Model
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
CALCULATION TOOLS Download
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
CALCULATION TOOLS Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
CALCULATION TOOLS Download
Jitter and SNR Calculator for ADCs
JITTER-SNR-CALC JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options

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