ADS7841 12-bit 4-channel serial output sampling analog-to-digital converter (ADC) | TI.com

ADS7841 (ACTIVE) 12-bit 4-channel serial output sampling analog-to-digital converter (ADC)

 

Automotive qualified version available, see ADS7841-Q1.

Description

The ADS7841 is a 4-channel, 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface. The resolution is programmable to either 8 bits or 12 bits. Typical power dissipation is 2mW at a 200kHz through-put rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 15uW. The ADS7841 is tested down to 2.7V operation.

Low power, high speed, and on-board multiplexer make the ADS7841 ideal for battery-operated systems such as personal digital assistants, portable multi-channel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7841 is available in a DIP-16 or a SSOP-16 package and is specified over the \x9640°C to +125°C (1) temperature range.

Features

  • SINGLE SUPPLY: 2.7V to 5V
  • 4-CHANNEL SINGLE-ENDED OR 2-CHANNEL DIFFERENTIAL INPUT
  • UP TO 200kHz CONVERSION RATE
  • ±1LSB MAX INL AND DNL
  • NO MISSING CODES
  • 72dB SINAD
  • SERIAL INTERFACE
  • DIP-16 OR SSOP-16 PACKAGE
  • ALTERNATE SOURCE FOR MAX1247
  • ADS7841ES: +125°C Version
  • APPLICATIONS
    • DATA ACQUISITION
    • TEST AND MEASUREMENT
    • INDUSTRIAL PROCESS CONTROL
    • PERSONAL DIGITAL ASSISTANTS
    • BATTERY-POWERED SYSTEMS

NOTE: (1) ES grade only.

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
ADS7841 Order now 12     200     4     Serial     -40 to 85     SSOP | 16     3.00 | 1ku     1.8     16SSOP: 29 mm2: 6 x 4.9 (SSOP | 16)     SAR     Single-Ended     Multiplexed     Ext         5.25     0     2.7     5.25     2.7     5.25     1     72     -78     Catalog    
ADS7841-Q1 Order now 12     200     4     Serial     -40 to 125     SSOP | 16     3.51 | 1ku     0.84     16SSOP: 29 mm2: 6 x 4.9 (SSOP | 16)     SAR     Single-Ended     Multiplexed     Ext         5.25     0     2.7     5.25     2.7     5.25     1     73     -78     Automotive