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MAX1989 Datasheet Multichannel Remote/Local Temperature Sensors

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-1766; Rev 2; 5/03 MAX1668/MAX1805/MAX1989† Multichannel Remote/Local Temperature Sensors.

Download the MAX1989 datasheet PDF. This datasheet also includes the MAX1668 variant, as both parts are published together in a single manufacturer document.

General Description

The MAX1668/MAX1805/MAX1989 are precise multichannel digital thermometers that report the temperature of all remote sensors and their own packages.

The remote sensors are diode-connected transistors—typically low-cost, easily mounted 2N3904 NPN types—that replace conventional thermistors or thermocouples.

Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed.