AD595AQ Datasheet PDF - ADI

●The AD595AQ is a Complete Instrumentation Amplifier with thermocouple cold junction compensator on a monolithic chip. It combines an ice point reference with a pre-calibrated amplifier to produce a high level (10mV/°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 set-point controller using either fixed or remote set-point 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. It 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. It can be powered from a single ended supply (including +5V) and by including a negative supply, temperatures below 0°C can be measured.

● Pre-trimmed for Type K (AD595) Thermocouples

● Can be Used with Type T Thermocouple Inputs

● 10mV/°C Low Impedance Voltage Output

● Built-in Ice Point Compensation

● <1mW Typical Low Power

● Thermocouple Failure Alarm

● Laser Wafer Trimmed to 1°C Calibration Accuracy

● Set-point Mode Operation

● Self-contained Celsius Thermometer Operation

● High Impedance Differential Input

● Side-brazed DIP or CerDIP

●Temperature compensation terminals (+C & -C) at pins 2 & 6 are provided to supply small calibration currents only, device may be permanently damaged if they are grounded/connected to a low impedance.