MAX1617A View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX1617A

Remote/Local Temperature Sensor with SMBus Serial Interface

Maxim Integrated 

EVALUATION KIT AVAILABLE

MAX1617A

Remote/Local Temperature Sensor

with SMBus Serial Interface

General Description

The MAX1617A 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.

The 2-wire serial interface accepts standard System

Management Bus (SMBus) Write Byte, Read Byte, Send

Byte, and Receive Byte commands to program the alarm

thresholds and to read temperature data. The data format

is 7 bits plus sign, with each bit corresponding to 1°C, in

two’s complement format. Measurements can be done

automatically and autonomously, with the conversion rate

programmed by the user or programmed to operate in a

single-shot mode. The adjustable rate allows the user to

control the supply-current drain.

The MAX1617A is nearly identical to the popular

MAX1617, but has improved SMBus timing specifications,

improved bus collision immunity, software manufacturer

and device identification available via the serial interface,

and a power-on reset function that can force a reset of the

slave address via the serial interface.

Applications

●● Desktop and Notebook

Computers

●● Central Office

Telecom Equipment

●● Smart Battery Packs

●● Test and Measurement

●● LAN Servers

●● Multichip Modules

●● Industrial Controls

Pin Configuration

TOP VIEW

+

N.C. 1

VCC 2

DXP 3

DXN 4 MAX1617A

N.C. 5

ADD1 6

GND 7

GND 8

16 N.C.

15 STBY

14 SMBCLK

13 N.C.

12 SMBDATA

11 ALERT

10 ADD0

9 N.C.

QSOP

Features

●● Two Channels: Measures Both Remote and Local

Temperatures

●● No Calibration Required

●● SMBus 2-Wire Serial Interface

●● Programmable Under/Overtemperature Alarms

●● Supports SMBus Alert Response

●● Supports Manufacturer and Device ID Codes

●● 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)

●● 3μA (typ) Standby Supply Current

●● 70μA (max) Supply Current in Auto-Convert Mode

●● +3V to +5.5V Supply Range

●● Small 16-Pin QSOP Package

Ordering Information

PART

MAX1617AMEE+

PIN-PACKAGE

-55°C to +125°C

PIN-PACKAGE

16 QSOP

+Denotes a lead(Pb)-free/RoHS-compliant package.

Typical Operating Circuit

2N3904

0.1µF

3V TO 5.5V

VCC STBY

MAX1617A

DXP

SMBCLK

SMBDATA

DXN

2200pF

ALERT

ADD0 ADD1 GND

10k EACH

CLOCK

DATA

INTERRUPT

TO µC

19-4508; Rev 2; 11/16

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