MAX6695

Features:

 Measure One Local and Two RemoteTemperatures
11-Bit, 0.125 Resolution
High Accuracy ±1.5 (max) from +60 to +100(Remote)
ACPI Compliant
Programmable Under/Overtemperature Alarms
Programmable Conversion Rate 
Three Alarm Outputs: ALERT , OT 1, and OT 2
SMBus/I²C^TM-Compatible Interface


Application

Notebook Computers
Desktop Computers
Servers
Workstations
Test and Measurement Equipment


Specifications

V_CC.........................................................................-0.3V to +6V
DXP1, DXP2................................................-0.3V to (V_CC + 0.3V)
DXN .....................................................................-0.3V to +0.8V
SMBCLK, SMBDATA, ALERT .......................................-0.3V to +6V
RESET, STBY , ADD0, ADD1, OT1, OT2.......................-0.3V to +6V
SMBDATA Current ..................................................1mA to 50mA
DXN Current .....................................................................±1mA
Continuous Power Dissipation (T_A = +70)
10-Pin mMAX (derate 6.9mW/ above +70)..............555.6mW
16-Pin QSOP (derate 8.3mW/ above +70) ..............666.7mW
Operating Temperature Range ............................-40 to +125
Junction Temperature ........................................................+150
Storage Temperature Range .................................-65to +150
Lead Temperature (soldering, 10s) ...................................+300

Description

The MAX6695/MAX6696 are precise, dual-remote, andlocal digital temperature sensors. They accurately mea-sure the temperature of their own die and two remotediode-connected transistors, and report the tempera-ture in digital form on a 2-wire serial interface. Theremote diode is typically the emitter-base junction of acommon-collector PNP on aCPU, FPGA, GPU, or ASIC.

The 2-wire serial interface of MAX6695 accepts standard systemmanagement bus (SMBus^TM) commands such as WriteByte,Read Byte, Send Byte, and Receive Byte to readthe temperature data and program the alarm thresholdsand conversion rate. The MAX6695/MAX6696 can func-tion autonomously with a programmable conversionrate, which allows control of supply current and temper-ature update rate to match system needs. For conver-sion rates of 2Hz or less, the temperature isrepresented as 10 bits + sign with a resolution of+0.125. When the conversion rate is 4Hz, output datais 7 bits + sign with a resolution of +1. The MAX6695/MAX6696 also include an SMBus timeout feature to enhance system reliability.

Remote temperature sensing accuracy is ±1.5 be-tween +60 and +100 with no calibration needed.The MAX6695/MAX6696 measure temperatures from-40 to +125. In addition to the SMBus ALERT out-put, the MAX6695/MAX6696 feature two overtempera-ture limit indicators (OT 1 and OT 2), which are activeonly while the temperature is above the correspondingprogrammable temperature limits. The OT 1 and OT 2outputs are typically used for fan control, clock throt-tling, or system shutdown.

The MAX6695 has a fixed SMBus address. TheMAX6696 has nine different pin-selectable SMBusaddresses. The MAX6695 is available in a 10-pinMAX^®and the MAX6696 is available in a 16-pin QSOPpackage. Both operate throughout the -40 to +125temperature range.