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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX6697 Datasheet

7-Channel Precision Temperature Monitor

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MAX6697 pdf
19-3477; Rev 0; 1/05
7-Channel Precision Temperature Monitor
General Description
The MAX6697 precision multichannel temperature sen-
sor monitors its own temperature and the temperatures
of up to six external diode-connected transistors. All
temperature channels have programmable alert thresh-
olds. Channels 1, 4, 5, and 6 also have programmable
overtemperature thresholds. When the measured tem-
perature of a channel exceeds the respective thresh-
old, a status bit is set in one of the status registers. Two
open-drain outputs, OVERT and ALERT, assert corre-
sponding to these bits in the status register.
The 2-wire serial interface supports the standard system
management bus (SMBus™) protocols: write byte, read
byte, send byte, and receive byte for reading the tem-
perature data and programming the alarm thresholds.
The MAX6697 is specified for an operating temperature
range of -40°C to +125°C and is available in 20-pin
QSOP and 20-pin TSSOP packages.
Applications
Desktop Computers
Notebook Computers
Workstations
Servers
Features
o Six Thermal-Diode Inputs
o Local Temperature Sensor
o 1°C Remote Temperature Accuracy (+60°C to
+100°C)
o Temperature Monitoring Begins at POR for Fail-
Safe System Protection
o ALERT and OVERT Outputs for Interrupts,
Throttling, and Shutdown
o Small 20-Pin QSOP and 20-Pin TSSOP Packages
o 2-Wire SMBus Interface
Ordering Information
PART
TEMP RANGE
MAX6697EP_ _
MAX6697UP_ _
-40°C to +125°C
-40°C to +125°C
*See the Slave Address section.
PIN-PACKAGE
20 QSOP
20 TSSOP
SMBus is a trademark of Intel Corp.
www.DataSheet4U.com
CPU
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.3V
2200pF
1 DXP1
2 DXN1
GND 20
MAX6697 SMBCLK 19
2200pF
3 DXP2
4 DXN2
SMBDATA 18
ALERT 17
2200pF
5 DXP3
6 DXN3
VCC 16
OVERT 15
2200pF
7 DXP4
8 DXN4
NC1 14
NC2 13
9 DXP5
2200pF
10 DXN5
DXN6 12
DXP6 11
4.7k
EACH
CLK
DATA
INTERRUPT
TO µP
0.1µF
TO SYSTEM
SHUTDOWN
GPU
2200pF
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX6697 Datasheet

7-Channel Precision Temperature Monitor

No Preview Available !

MAX6697 pdf
7-Channel Precision Temperature Monitor
ABSOLUTE MAXIMUM RATINGS
VCC, SCK, SDA, ALERT, OVERT to GND ................-0.3V to +6V
DXP_ to GND..............................................-0.3V to (VCC + 0.3V)
DXN_ to GND ........................................................-0.3V to +0.8V
SDA, ALERT, OVERT Current .............................-1mA to +50mA
DXN Current .......................................................................±1mA
Continuous Power Dissipation (TA = +70°C)
20-Pin QSOP
(derate 9.1mW/°C above +70°C) ......................727.3mW(E20-1)
20-Pin TSSOP
(derate 11.0mW/°C above +70°C)..................879.1mW(U20-2)
ESD Protection (all pins, Human Body Model) ................±2000V
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage
Standby Supply Current
Operating Current
Temperature Resolution
VCC
ISS SMBus static
ICC During conversion
Channel 1 only
Other diode channels
3.0 5.5 V
30 µA
500 1000
µA
11
Bits
8
Remote Temperature Accuracy
VCC = 3.3V
TA = TRJ = +60°C to +100°C
TA = TRJ = 0°C to +125°C
DXN_ grounded,
TRJ = TA = 0°C to +85°C
-1.0
-3.0
+1.0
+3.0
±2.5
oC
Local Temperature Accuracy
www.DataSheet4U.com
Supply Sensitivity of Temperature
Accuracy
VCC = 3.3V
TA = +60°C to +100°C
TA = 0°C to +125°C
-2.0 +2.0
oC
-3.0 +3.0
±0.2
oC/V
Remote Channel 1 Conversion
Time
tCONV1
Resistance cancellation on
Resistance cancellation off
95 125 156
190 250 312
ms
Remote Channels 2 Through 6
Conversion Time
tCONV_
95 125 156 ms
Remote-Diode Source Current
High level
IRJ
Low level
80 100 120
µA
8 10 12
Undervoltage-Lockout Threshold
Undervoltage-Lockout Hysteresis
UVLO Falling edge of VCC disables ADC
2.30 2.80 2.95
90
V
mV
Power-On Reset (POR) Threshold
POR Threshold Hysteresis
ALERT, OVERT
VCC falling edge
1.2 2.0 2.5
V
90 mV
Output Low Voltage
Output Leakage Current
VOL ISINK = 1mA
ISINK = 6mA
0.3
V
0.5
1 µA
2 _______________________________________________________________________________________


Part Number MAX6697
Description 7-Channel Precision Temperature Monitor
Maker Maxim Integrated Products
Total Page 19 Pages
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