Product Summary

The MAX1658ESA+T 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 of the MAX1658ESA+T is ±3℃ 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. The applications of the MAX1658ESA+T include Desktop and Notebook, Central Office, Computers, Telecom Equipment, Smart Battery Packs, Test and Measurement, LAN Servers, Multichip Modules and Industrial Controls.

Parametrics

MAX1658ESA+T absolute maximum ratings: (1)VCC to GND: -0.3V to +6V; (2)DXP, ADD_ to GND: -0.3V to (VCC + 0.3V); (3)DXN to GND: -0.3V to +0.8V; (4)SMBCLK, SMBDATA, ALERT, STBY to GND: -0.3V to +6V; (5)SMBDATA, ALERT Current: -1mA to +50mA; (6)DXN Current: ±1mA; (7)ESD Protection (SMBCLK, SMBDATA, ALERT, Human Body Model): 4000V; (8)ESD Protection (other pins, Human Body Model):2000V; (9)Continuous Power Dissipation: 667mW; (10)Operating Temperature Range: -55 to +125℃; (11)Junction Temperature: +150℃; (12)Storage Temperature Range: -65 to +165℃; (13)Lead Temperature (soldering, 10sec): +300℃.

Features

MAX1658ESA+T features: (1)Two Channels: Measures Both Remote and Local Temperatures; (2)No Calibration Required; (3)SMBus 2-Wire Serial Interface; (4)Programmable Under/Overtemperature Alarms; (5)Supports SMBus Alert Response; (6)Supports Manufacturer and Device ID Codes; (7)3μA (typ) Standby Supply Current; (8)70μA (max) Supply Current in Auto-Convert Mode; (9)+3V to +5.5V Supply Range; (10)Small 16-Pin QSOP Package.

Diagrams

MAX1658ESA+T diagram

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