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MAX1805 Datasheet Multichannel Remote / Local Temperature Sensor

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: MAX1668/MAX1805† 19-1766; Rev 0; 8/00 Multichannel Remote/Local Temperature Sensor.

General Description

The MAX1668/MAX1805 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 lowcost, easily mounted 2N3904 NPN types—that replace conventional thermistors or thermocouples.

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

Key Features

  • o Multichannel 4 Remote, 1 Local (MAX1668) 2 Remote, 1 Local (MAX1805) o No Calibration Required o SMBus 2-Wire Serial Interface o Programmable Under/Overtemperature Alarms o Supports SMBus Alert Response o Accuracy ±2°C (+60°C to +100°C, local) ±3°C (-40°C to +125°C, local) ±3°C (+60°C to +100°C, remote) o 3µA (typ) Standby Supply Current o 700µA (max) Supply Current o Small, 16-Pin QSOP Package _______________Ordering Information PART MAX1668MEE MAX1805MEE TEMP. RANGE -55°C to +125°C -55°C.

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MAX1805 Distributor