AD595:  Monolithic Thermocouple Amplifier with Cold Junction Compensation Pretrimmed for Type K Thermocouples

The AD594/AD595 is a complete instrumentation amplifier and thermocouple cold junction compensator on a monolithic chip. It combines an ice point reference with a precalibrated amplifier to produce ...More

AD595:  Monolithic Thermocouple Amplifier with Cold Junction Compensation Pretrimmed for Type K Thermocouples

Product Description

The AD594/AD595 is a complete instrumentation amplifier and thermocouple cold junction compensator on a monolithic chip. It combines an ice point reference with a precalibrated amplifier to produce a high level (10 mV/°C) output directly from a thermocouple signal. Pin-strapping options allow it to be used as a linear amplifier-compensator or as a switched output setpoint controller using either fixed or remote setpoint control. It can be used to amplify its compensation voltage directly, thereby converting it to a stand-alone Celsius transducer with a low impedance voltage output.

The AD594/AD595 includes a thermocouple failure alarm that indicates if one or both thermocouple leads become open. The alarm output has a flexible format which includes TTL drive capability.

The AD594/AD595 can be powered from a single ended supply (including +5 V) and by including a negative supply, temperatures below 0°C can be measured. To minimize self-heating, an unloaded AD594/AD595 will typically operate with a total supply current 160 µA, but is also capable of delivering in excess of ±5 mA to a load.

The AD594 is precalibrated by laser wafer trimming to match the characteristic of type J (iron-constantan) thermocouples and the AD595 is laser trimmed for type K (chromel-alumel) inputs. The temperature transducer voltages and gain control resistors are available at the package pins so that the circuit can be recalibrated for the thermocouple types by the addition of two or three resistors. These terminals also allow more precise calibration for both thermocouple and thermometer applications.

The AD594/AD595 is available in two performance grades. The C and the A versions have calibration accuracies of ±1°C and ±3°C, respectively. Both are designed to be used from 0°C to +50°C, and are available in 14-pin, hermetically sealed, side-brazed ceramic DIPs as well as low cost cerdip packages.

Features

  • Pretrimmed for Type J (AD594) or Type K (AD595) Thermocouples
  • Can Be Used with Type T Thermocouple Inputs
  • Low Impedance Voltage Output: 10 mV/°C
  • Built-In Ice Point Compensation
  • Wide Power Supply Range: +5 V to ±15 V
  • Low Power: <1 mW typical
  • Thermocouple Failure Alarm
  • Laser Wafer Trimmed to 1°C Calibration Accuracy
  • Setpoint Mode Operation
  • Self-Contained Celsius Thermometer Operation
  • High Impedance Differential Input
  • Side-Brazed DIP or Low Cost Cerdip

Diagrams

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  • 原理图符号和PCB封装
AD595 Diagram
Typical Application Circuit for AD595

技术指标

Temp Range(s) -55 to +125
Output Type Analog
Sensor Output +10 mV/°C
Temp Res(°C/LSB) n/a
Supply Voltage Range +4.5V to +5.5V

浏览其他的产品

Part# Sensor Output Max Deg C Error Over Tmp Supply Voltage Range Temp Range(s) Packages Price* (1000-4999) Product Description
AD590 +1 µA/°K 5.5 +4V to +30V -55 to +150 FP-2, SOIC-8, TO-52 $2.24 2-Terminal Temperature Transducer
AD597 +10 mV/°C 4 +Vs to -Vs = 30Vmax -55 to +125 10 lead TO-100, SOIC-8 $2.78 Thermocouple Conditioner/Cold Junction Compensator/Setpoint-Controller for Type-K Thermocouple
AD596 +10 mV/°C 4 +Vs to -Vs = 30Vmax -55 to +125 10 lead TO-100 $7.25 Thermocouple Conditioner/Cold Junction Compensator/Setpoint-Controller for Type-J Thermocouple
TMP17 +1 µA/°K 3.5 +4V to +30V -40 to +105 SOIC-8 $1.55 Low Cost, Current Output Temperature Transducer
AD594 +10 mV/°C 3.5 +4.5V to +5.5V -55 to +125 Cerdip-14, DIP-14, SBDIP-14 $6.88 I.C.Thermocouple Amplifier w/ Cold Junction Compensation Pretrimmed for Type J Thermocouples
TMP37 +20 mV/°C 3 +2.7V to +5.5V +5 to +100 SOIC-8, SOT23-5, TO-92 $0.45 Low Voltage Temperature Sensor, +5°C to +100°C
TMP36 +10 mV/°C 3 +2.7V to +5.5V -40 to +125 SOIC-8, SOT23-5, TO-92 $0.45 Low Voltage Temperature Sensor, -40°C to +125°C,
TMP35 +10 mV/°C 3 +2.7V to +5.5V +10 to +125 SOIC-8, SOT23-5, TO-92 $0.45 Low Voltage Temperature Sensor, 10°C to 125°C.
AD22103 +28 mV/°C 2.5 +2.7V to +3.6V 0 to +100 SOIC-8, TO-92 $1.40 Voltage Output 3.3 V Temperature Sensor w/ Signal Conditioning
AD22100 +22.5 mV/°C 2 +4V to +6.5V 0 to +100 SOIC-8, TO-92 $1.30 Voltage Output Temperature Sensor w/ Signal Conditioning
AC2626 +1 µA/°K 1.7 +4V to +30V -55 to +150 Stainless Steel Probe - AD590 Temperature Sensor Mounted in Stainless Steel Probe
AD595 +10 mV/°C 1 +4.5V to +5.5V -55 to +125 Cerdip-14, SBDIP-14 $6.88 I.C.Thermocouple Amplifier w/ Cold Junction Compensation Pretrimmed for Type K Thermocouples
AD592 +1 µA/°K 0.4 +4V to +30V -25 to +105 TO-92 $1.91 Current Output – Precision IC Temperature Transducer
Sorted by 25 Deg C Temperature Error (Descending) and Max Error Over Temp (Descending)

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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这是指该器件允许的工作温度范围。以下为所规定的三种温度范围：
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  • 军用温度范围：－55ºC ～＋125ºC
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