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MAX6642_09

Description
DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 1Cel, SQUARE, SURFACE MOUNT
CategoryThe sensor   
File Size142KB,14 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

MAX6642_09 Overview

DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 1Cel, SQUARE, SURFACE MOUNT

MAX6642_09 Parametric

Parameter NameAttribute value
Maximum supply voltage5.5 V
Minimum supply voltage3 V
Maximum operating temperature125 Cel
Minimum operating temperature-40 Cel
Maximum accuracy1
Processing package description3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEA, TDFN-6
stateACTIVE
high0.8000 mm
width3 mm
terminal coatingTIN LEAD
Installation featuresSURFACE MOUNT
Terminal typeSOLDER
Working current1 mA
type of packagingSQUARE
length or diameter3 mm
Number of digits10
Output interface type2-WIRE INTERFACE
sensor typeSERIAL
19-2920; Rev 2; 7/09
KIT
ATION
EVALU
E
BL
AVAILA
±1°C, SMBus-Compatible Remote/Local
Temperature Sensor with Overtemperature Alarm
General Description
The MAX6642 precise, two-channel digital temperature
sensor accurately measures the temperature of its own
die and a remote PN junction and reports the tempera-
ture data over a 2-wire serial interface. The remote PN
junction is typically a substrate PNP transistor on the
die of a CPU, ASIC, GPU, or FPGA. The remote PN
junction can also be a discrete diode-connected small-
signal transistor.
The 2-wire serial interface accepts standard system
management bus (SMBus™), Write Byte, Read Byte,
Send Byte, and Receive Byte commands to read the
temperature data and to program the alarm thresholds.
To enhance system reliability, the MAX6642 includes an
SMBus timeout. The temperature data format is 10 bit
with the least significant bit (LSB) corresponding to
+0.25°C. The
ALERT
output asserts when the local or
remote overtemperature thresholds are violated. A fault
queue may be used to prevent the
ALERT
output from
setting until two consecutive faults have been detected.
Measurements can be done autonomously or in a sin-
gle-shot mode.
Remote accuracy is ±1°C maximum error between
+60°C and +100°C. The MAX6642 operates from -40°C
to +125°C, and measures remote temperatures
between 0°C and +150°C. The MAX6642 is available in
a 6-pin TDFN package with an exposed pad.
Features
o
Dual Channel: Measures Remote and Local
Temperature
o
+0.25°C Resolution
o
High Accuracy ±1°C (max) (Remote) and
±2°C (Local) from +60°C to +100°C
o
Measures Remote Temperature Up to +150°C
o
Programmable Overtemperature Alarm
Temperature Thresholds
o
SMBus/I
2
C-Compatible Interface
o
Tiny TDFN Package with Exposed Pad
MAX6642
Ordering Information
PART
MAX6642ATT90-T
MAX6642ATT92-T
MAX6642ATT94-T
MAX6642ATT96-T
MAX6642ATT98-T
MAX6642ATT9A-T
MAX6642ATT9C-T
MAX6642ATT9E-T
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
6 TDFN-EP*
6 TDFN-EP*
6 TDFN-EP*
6 TDFN-EP*
6 TDFN-EP*
6 TDFN-EP*
6 TDFN-EP*
6 TDFN-EP*
Applications
Desktop Computers
Notebook Computers
Servers
Thin Clients
Test and Measurement
Workstations
Graphic Cards
T = Tape and reel.
*EP
= Exposed pad.
Pin Configuration and Functional Diagram appear at end of
data sheet.
Typical Operating Circuit
3.3V
0.1μF
47Ω
Selector Guide
PART
MAX6642ATT90-T
MAX6642ATT92-T
MAX6642ATT94-T
MAX6642ATT96-T
MAX6642ATT98-T
MAX6642ATT9A-T
MAX6642ATT9C-T
MEASURED TEMP RANGE
0°C to +150°C
0°C to +150°C
0°C to +150°C
0°C to +150°C
0°C to +150°C
0°C to +150°C
0°C to +150°C
TOP
MARK
AFC
AFD
AFE
AFF
AEW
AFG
AFH
AFI
μP
2200pF
V
CC
10kΩ EACH
DXP
MAX6642
SDA
DATA
CLOCK
INTERRUPT TO
μP
SCLK
ALERT
GND
MAX6642ATT9E-T
0°C to +150°C
SMBus is a trademark of Intel Corp.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

MAX6642_09 Related Products

MAX6642_09 MAX6642
Description DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 1Cel, SQUARE, SURFACE MOUNT DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 1Cel, SQUARE, SURFACE MOUNT
Maximum supply voltage 5.5 V 5.5 V
Minimum supply voltage 3 V 3 V
Maximum operating temperature 125 Cel 125 Cel
Minimum operating temperature -40 Cel -40 Cel
Maximum accuracy 1 1
Processing package description 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEA, TDFN-6 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEA, TDFN-6
state ACTIVE ACTIVE
high 0.8000 mm 0.8000 mm
width 3 mm 3 mm
terminal coating TIN LEAD TIN LEAD
Installation features SURFACE MOUNT SURFACE MOUNT
Terminal type SOLDER SOLDER
Working current 1 mA 1 mA
type of packaging SQUARE SQUARE
length or diameter 3 mm 3 mm
Number of digits 10 10
Output interface type 2-WIRE INTERFACE 2-WIRE INTERFACE
sensor type SERIAL SERIAL
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