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MAX1619 - Remote/Local Temperature Sensor with Dual- Alarm Outputs and SMBus Serial Interface

General Description

The MAX1619 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package.

typically a low-cost, easily mounted 2N3904 NPN type

that replaces conventional thermistors or thermocouples.

Key Features

  • o Two Channels Measure Both Remote and Local Temperatures o No Calibration Required o SMBus 2-Wire Serial Interface o Programmable Under/Overtemperature Alarms o OVERT Output for Fan Control o Supports SMBus Alert Response o Supports Manufacturer and Device ID Codes 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 70µA (max) Supply Current in Auto-Convert Mode o +3V to +5.5V Supply Range o Write-Once Protec.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1483; Rev 0; 4/99 Remote/Local Temperature Sensor with DualAlarm Outputs and SMBus Serial Interface ________________General Description The MAX1619 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.