AD8634
Info : RECOMMENDED FOR NEW DESIGNS
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AD8634

High Temperature, Low Noise, RRO Dual Operational Amplifier

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 3
1ku List Price Starting From $80.04
Features
  • Extreme high temperature operation
    −40°C to +210°C, FLATPACK package
    −40°C to +175°C, SOIC package
  • Rail-to-rail output
  • Low power: 1.3 mA maximum
  • See data sheet for additional features
  • Download AD8634-KGD Data Sheet
  • Available As Known Good Die and fully guaranteed to data sheet specifications.
Additional Details
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The AD8634 is a precision, 9.7 MHz bandwidth, dual amplifier that features rail-to-rail outputs. The AD8634 is guaranteed to operate from 3 V to 30 V (or from ±1.5 V to ±15 V) and at very high temperatures.

The AD8634 is well suited for applications that require both ac and dc precision performance. The combination of wide bandwidth, low noise, and precision makes the AD8634 useful in a wide variety of applications, including filters and interfacing with a variety of sensors.

This dual-channel op amp is offered in an 8-lead SOIC package with an operating temperature range of −40°C to +175°C. It is also available in an 8-lead ceramic flat package (FLATPACK) with an operating temperature range of −40°C to +210°C. Both packages are designed for robustness at extreme temperatures and are qualified for up to 1000 hours of operation at the maximum temperature rating.

The AD8634 is a member of a growing series of high temperature qualified products offered by Analog Devices, Inc. For a complete selection table of available high temperature products, see the high temperature product list and qualification data available at www.analog.com/hightemp.

APPLICATIONS

  • Down-hole drilling and instrumentation
  • Avionics
  • Heavy industrial
  • High temperature environments
Part Models 3
1ku List Price Starting From $80.04

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8634-KGD-CHIP
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AD8634HFZ
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AD8634HRZN
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Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

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EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

EVAL-OPAMP-2 Evaluation Board

Product Detail

The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

  • EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
  • EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
  • EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8

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EV-HT-200CDAQ1

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

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EV-HT-200CDAQ1

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

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 Detail

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.
Tools & Simulations

Tools & Simulations 5

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Reference Designs

Reference Designs 1

High Temperature Data Acquisition System

16-Bit, 600 kSPS, Low Power Data Acquisition System for High Temperature Environments

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