ADS7800

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12-Bit 3us Sampling Analog-to-Digital Converter

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Product details

Parameters

Resolution (Bits) 12 Number of input channels 1 Sample rate (Max) (kSPS) 333 Interface type Byte-Wide, Parallel Architecture SAR Input type Single-Ended Multi-channel configuration Rating Catalog Reference mode Int Input range (Max) (V) 10 Input range (Min) (V) -10 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 135 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 73 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) 24 160 mm² 15.5 x 10.3 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 333k SAMPLES PER SECOND
  • STANDARD ±10V AND ±5V INPUT RANGES
  • DC PERFORMANCE OVER TEMP:
    • No Missing Codes
    • 1/2LSB Integral Linearity Error
    • 3/4LSB Differential Linearity Error
  • AC PERFORMANCE OVER TEMP:
    • 72dB Signal-to-Noise Ratio
    • 80dB Spurious-free Dynamic Range
    • –80dB Total Harmonic Distortion
  • INTERNAL SAMPLE/HOLD, REFERENCE, CLOCK, AND THREE-STATE OUTPUTS
  • POWER DISSIPATION: 215mW max
  • PACKAGE:
    • 24-Pin Single-Wide DIP
    • 24-Lead SOIC

Note: Recommended Voltage Reference: REF02 and REF102
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Description

The ADS7800 is a complete 12-bit sampling analog-to-digital converter using state-of-the-art CMOS structures. It contains a complete 12-bit successive approximation A/D converter with internal sample/hold, reference, clock, digital interface for microprocessor control, and three-state output drivers.

The ADS7800 is specified at a 333kHz sampling rate. Conversion time is factory set for 2.70µs max over temperature, and the high speed sampling input stage insures a total acquisition and conversion time of 3µs max over temperature. Precision, laser-trimmed scaling resistors provide industry-standard input ranges of ±5V or ±10V.

AC and DC performance are completely specified. Two grades based on linearity and dynamic performance are available to provide the optimum price/performance fit in a wide range of applications.

The 24-pin ADS7800 is available in plastic and side-braze hermetic 0.3" wide DIPs, and in an SOIC package. It operates from a +5V supply and either a –12V or –15V supply. The ADS7800 is available in grades specified over 0°C to +70°C and –40°C to +85°C temperature ranges.

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Technical documentation

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Type Title Date
* Data sheet ADS7800: 12-Bit 3-µs Sampling Analog-to-Digital Converter datasheet (Rev. A) Feb. 17, 2004
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application note Coding Schemes Used with Data Converters (Rev. A) May 15, 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar. 17, 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) Nov. 10, 2010
Application note A Clarification of Use of High-Speed S/H to Improve Sampling ADC Performance Oct. 02, 2000
Application note Using the ADS7800 12 Bit ADC with Unipolar Input Signals Oct. 02, 2000

Design & development

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

Design tools & simulation

SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL 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 TOOL 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 TOOL 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
  • (...)

CAD/CAE symbols

Package Pins Download
CDIP SB (JDN) 24 View options
SOIC (DW) 24 View options

Ordering & quality

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