ADG798

RECOMMENDED FOR NEW DESIGNS

High Temperature (up to 210°C), Low Voltage 8-Channel Multiplexer

Part Models
4
1ku List Price
Starting From $111.82
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Part Details

  • Download ADG798-KGD Data Sheet. Available as Known Good and fully guaranteed to data sheet specifications.
  • Extreme high temperature operation
  • Specified temperature range
    • −55°C to +210°C (16-lead FLATPACK)
    • −55°C to +175°C (16-lead TSSOP)
  • 3.0 V to 5.5 V single supply
  • ±2.5 V dual supply
  • 10 Ω on resistance, maximum
  • 2 Ω on resistance flatness, maximum
  • 12 ns switching times
  • Single 8:1 multiplexer
  • Low power consumption
  • TTL-/CMOS-compatible inputs
ADG798
High Temperature (up to 210°C), Low Voltage 8-Channel Multiplexer
ADG798 Functional Block Diagram ADG798 Pin Configuration ADG798 Pin Configuration ADG798 Pin Configuration
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Evaluation Kits

eval board
EV-HT-200CDAQ1

200°C High Temperature Data Acquisition and Control System Reference Design

Features and Benefits

  • Complete high temperature data acquisition reference platform with all components and assembly materials rated to at least 200°C
  • 10 channels of high precision analog to digital conversion
    • (2) Direct channels, 400ksps max
    • (8) Multiplexed channels, 16ksps max (including temp sensor)
    • Multiple GPIO for external control and optional external triggering
  • Complete software package including
    • Optimized firmware with RTOS for multiple modes of data acquisition
    • PC Host software for control, viewing and logging data
    • Source code available for all software
  • Form factor compatible with downhole oil/gas exploration instrumentation
  • Kit includes analog and digital/power breakout boards for rapid evaluation
 

Product Details

EV-HT-200CDAQ1 builds on the CN0365 analog front end reference design from with the goal of providing a foundation for a high temperature, low power microcontroller-based data acquisition and control solution that meets the requirements for many downhole instrumentation and other high temperature applications. Based upon the AD7981 analog-to-digital SAR converter, this reference design demonstrates a full featured system with two high speed simultaneously sampled channels along with 8 additional multiplexed channels suitable for covering the acquisition requirements of a broad range of downhole tools (10 channels total). This analog front end is connected to the VORAGO Technologies VA10800 ARM® Cortex®-M0 based microcontroller via multiple SPI ports. Once acquired, the data can be processed locally or transmitted via a UART or optional RS485 communications interface. Other supporting components on the board, including memory, clock, power and passives are all rated for high temperature operation by their respective suppliers and verified to operate reliably at 200°C or higher. In addition to the hardware, open source firmware is supplied for the project using FreeRTOS with optimized drivers and data acqusition protocol with multiple modes of operation. Open source PC software included allows the users to connect to the board via UART to control acquisition modes, view data, log data and perform signal analysis. This platform is suitable for reference design, rapid prototyping (such as new sensor techniques) and lab testing of high temperature instrumentation systems.

eval board
EVAL-ADG798

ADG798 Evaluation Board

Features and Benefits

  • Up to 210°C high temperature operation
  • Supply voltages
    • Dual supply: ±2.5 V
    • Single supply: 1.8 V to 5.5 V
  • Parallel interface compatible with 3 V logic

Product Details

The EVAL-ADG798EB1Z is the evaluation board for the ADG798 high temperature 8:1 multiplexer. The entire board assembly is constructed with high temperature compliant materials and is suitable for short duration device evaluation up to 210°C.


The ADG798 is soldered to the center of the evaluation board, and headers are provided to connect to each of the source and drain pins. A 4-pin header powers the device and provides a user defined digital logic supply voltage.


Full specifications on the ADG798 are available in the ADG798 data sheet, which should be consulted in conjunction with user guide UG-1039 when using the evaluation board.

EV-HT-200CDAQ1
200°C High Temperature Data Acquisition and Control System Reference Design
EV-HT-200CDAQ1AALL-web EV-HT-200CDAQ1AANGLE-web EV-HT-200CDAQ1ABOTTOM-web EV-HT-200CDAQ1ATOP-web EV-HT-200CDAQ1BANGLE-web EV-HT-200CDAQ1BBOTTOM-web EV-HT-200CDAQ1BTOP-web EV-HT-200CDAQ1CANGLE-web EV-HT-200CDAQ1CBOTTOM-web EV-HT-200CDAQ1CTOP-web EV-HT-200CDAQ1DANGLE-web EV-HT-200CDAQ1DBOTTOM-web EV-HT-200CDAQ1DTOP-web
EVAL-ADG798
ADG798 Evaluation Board
EVAL-ADG798EB1Z Image

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