AD8497ARMZ-R7
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Analog Devices Inc. AD8497ARMZ-R7

Manufacturer No:
AD8497ARMZ-R7
Manufacturer:
Analog Devices Inc.
Package:
Tape & Reel (TR)
Description:
IC THERMOCOUPLE A W/COMP 8MSOP
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The AD8497ARMZ-R7, produced by Analog Devices Inc., is a precision instrumentation amplifier with thermocouple cold junction compensation integrated into a single IC package. This device is specifically calibrated to match the characteristics of K-type (chromel-alumel) thermocouples. It offers a high-level output of 5 mV/°C directly from the thermocouple signal, combining an ice point reference with a precalibrated amplifier. The AD8497ARMZ-R7 can operate as a standalone thermometer or as a switched output setpoint controller, making it versatile for various temperature measurement applications.

Key Specifications

Parameter Value Unit
Supply Voltage Range 2.7 V to 36 V V
Output Voltage Range -VS + 0.025 to +VS - 0.1 V
Input Voltage Range -VS - 0.2 to +VS - 1.6 V
Overvoltage Range +VS - 25 to -VS + 25 V
Input Bias Current 25 to 50 nA
Input Offset Current 1.5 to 0.5 nA
Common-Mode Rejection 1 to 0.3 °C/V
Power Supply Rejection 0.5 °C/V
Output Short-Circuit Current 7 mA
-3 dB Bandwidth 25 kHz kHz
Settling Time to 0.1% 40 μs μs

Key Features

  • Complete, precision laser wafer trimmed thermocouple signal conditioning system in a single IC package.
  • Flexible pinout allows operation as a setpoint controller or as a standalone Celsius thermometer.
  • Rugged inputs withstand 4 kV ESD and provide overvoltage protection (OVP) up to VS ± 25 V.
  • Differential inputs reject common-mode noise on the thermocouple leads.
  • Reference pin voltage can be offset to measure 0°C on single supplies.
  • Available in a small, 8-lead MSOP package that is fully RoHS compliant.
  • Capable of delivering in excess of ±5 mA to a load while minimizing self-heating with a total supply current of 180 μA when unloaded.

Applications

  • Temperature measurement in industrial systems.
  • Thermocouple-based temperature sensing in various environments.
  • Setpoint control in temperature regulation systems.
  • Integration with lower supply ADCs in embedded systems.
  • Use in systems requiring a wide common-mode input range.

Q & A

  1. What type of thermocouple does the AD8497ARMZ-R7 support?

    The AD8497ARMZ-R7 is calibrated to match the characteristics of K-type (chromel-alumel) thermocouples.

  2. What is the output voltage range of the AD8497ARMZ-R7?

    The output voltage range is from -VS + 0.025 to +VS - 0.1 volts.

  3. What is the supply voltage range for the AD8497ARMZ-R7?

    The supply voltage range is from 2.7 V to 36 V.

  4. How does the AD8497ARMZ-R7 protect against overvoltage?

    The device provides overvoltage protection (OVP) up to VS ± 25 V.

  5. What is the common-mode rejection ratio of the AD8497ARMZ-R7?

    The common-mode rejection ratio is 1 to 0.3 °C/V.

  6. What is the bandwidth of the AD8497ARMZ-R7?

    The -3 dB bandwidth is 25 kHz.

  7. How long does it take for the AD8497ARMZ-R7 to settle to 0.1% of the output step?

    The settling time to 0.1% is 40 μs.

  8. Is the AD8497ARMZ-R7 RoHS compliant?

    Yes, the device is fully RoHS compliant.

  9. What is the typical supply current of the AD8497ARMZ-R7 when unloaded?

    The typical supply current when unloaded is 180 μA.

  10. Can the AD8497ARMZ-R7 be used as a setpoint controller?

    Yes, the device can be used as a setpoint controller or as a standalone Celsius thermometer.

Product Attributes

Type:Thermocouple Amplifier
Input Type:Differential
Output Type:Analog
Current - Supply:250 µA
Operating Temperature:25°C ~ 100°C
Mounting Type:Surface Mount
Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:8-MSOP
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Similar Products

Part Number AD8497ARMZ-R7 AD8497CRMZ-R7 AD8494ARMZ-R7 AD8495ARMZ-R7 AD8496ARMZ-R7
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Active Active Active Active Active
Type Thermocouple Amplifier Thermocouple Amplifier Thermocouple Amplifier Thermocouple Amplifier Thermocouple Amplifier
Input Type Differential Differential Differential Differential Differential
Output Type Analog Analog Analog Analog Analog
Current - Supply 250 µA 250 µA 250 µA 250 µA 180 µA
Operating Temperature 25°C ~ 100°C 25°C ~ 100°C 0°C ~ 50°C 0°C ~ 50°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package 8-MSOP 8-MSOP 8-MSOP 8-MSOP 8-MSOP

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