Product details

Resolution (Bits) 12 Number of input channels 4 Sample rate (Max) (kSPS) 200 Interface type SPI Architecture SAR Input type Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 1.8 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 72 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
Resolution (Bits) 12 Number of input channels 4 Sample rate (Max) (kSPS) 200 Interface type SPI Architecture SAR Input type Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 1.8 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 72 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
SSOP (DBQ) 16 29 mm² 4.9 x 6
  • 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.

  • 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.

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.

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.

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Technical documentation

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Type Title Date
* Data sheet ADS7841: 12-Bit, 4-Channel Serial Output Sampling Analog-to-Digital Converter datasheet (Rev. B) 19 Jul 2001
User guide BOOSTXL-ADS7841-Q1 BoosterPack User's Guide 18 Dec 2017
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mar 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
Application note Apply TI TSC for Various and Multiple Functions 11 Dec 2006
Application note Using the ADS7841 and ADS7844 with 15-Clock Cycles 30 Jun 2005

Design & development

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Evaluation board

BOOSTXL-ADS7841-Q1 — ADS7841-Q1 12-bit 4-channel serial output sampling ADC BoosterPack™ plug-in module

BOOSTXL-ADS7841-Q1 is a platform for evaluating the performance of the ADS7841-Q1 4-channel, 12-bit, SAR ADC with an SPI-compatible serial interface. The evaluation kit includes the ADS7841-Q1 BoosterPack™ plug-in module and PC software that enables the user to configure the (...)

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Simulation tool

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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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Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

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 (...)
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 op-amp gain with feedback (...)
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