ADS7842 12-Bit, 4-Channel Parallel Output Sampling Analog-to-Digital Converter | TI.com

ADS7842 (ACTIVE) 12-Bit, 4-Channel Parallel Output Sampling Analog-to-Digital Converter

 

Description

The ADS7842 is a complete, 4-channel, 12-bit Analog-to-Digital Converter (ADC). It contains a 12-bit, capacitorbased, Successive Approximation Register (SAR) ADC with a sample-and-hold amplifier, interface for microprocessor use, and parallel, 3-state output drivers. The ADS7842 is specified at a 200kHz sampling rate while dissipating only 2mW of power. The reference voltage can be varied from 100mV to VCC with a corresponding LSB resolution from 24µV to 1.22mV. The ADS7842 is tested down to 2.7V operation.

Low power, high speed, and an onboard multiplexer make the ADS7842 ideal for battery-operated systems such as portable, multi-channel dataloggers and measurement equipment. The ADS7842 is available in an SSOP-28 package and is tested over the -40°C to +85°C temperature range.

Features

  • SINGLE SUPPLY: 2.7V to 5V
  • 4-CHANNEL INPUT MULTIPLEXER
  • UP TO 200kHz SAMPLING RATE
  • FULL 12-BIT PARALLEL INTERFACE
  • ±1LSB INL AND DNL
  • NO MISSING CODES
  • 72dB SINAD
  • LOW POWER:2mW
  • SSOP-28 PACKAGE
  • APPLICATIONS
    • DATA ACQUISITION
    • TEST AND MEASUREMENT
    • INDUSTRIAL PROCESS CONTROL
    • MEDICAL INSTRUMENTS
    • LABORATORY EQUIPMENT

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WEBENCH® Designer ADS7842



Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS7842 Order now 12     200     4     Parallel     -40 to 85     SSOP | 28     3.80 | 1ku     1.8     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     SAR     Single-Ended     Multiplexed     Ext         5.25     0     2.7     5.25     2.7     5.25     1     70     -78     Catalog