TMP421-Q1 Datasheet, PDF (1/38 Pages) Texas Instruments – Remote and Local Temperature Sensor

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TMP421-Q1, TMP422-Q1, TMP423-Q1
SBOS821 – NOVEMBER 2016
TMP42x-Q1 ±1°C Remote and Local Temperature Sensor
1 Features
•1 AEC-Q100 Qualified with the Following Results
– Temperature Grade 1: –40°C to +125°C
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C5
• SOT23-8 Package
• ±1°C Remote Diode Sensor (Maximum)
• ±1.5°C Local Temperature Sensor (Maximum)
• Series Resistance Cancellation
• n-Factor Correction
• Two-Wire I²C or SMBus™ Compatible Serial
Interface
• Multiple Interface Addresses
• Diode Fault Detection
• RoHS Compliant and No Sb/Br
2 Applications
• Processor and FPGA Temperature Monitoring
• LCD, DLP, and LCOS Projectors
• Servers
• Central Office Telecom Equipment
• Storage Area Networks (SAN)
3 Description
The TMP421-Q1, TMP422-Q1, and TMP423-Q1
devices are single, dual, and triple remote,
automotive-qualified temperature sensor monitors
with a built-in local temperature sensor. The remote
temperature sensor diode-connected transistors are
typically low-cost, NPN- or PNP-type transistors or
diodes that are an integral part of microcontrollers,
microprocessors, or field-programmable gate arrays
(FPGAs).
Remote accuracy is ±1°C for multiple device
manufacturers, with no calibration needed. The two-
wire serial interface accepts SMBus write byte, read
byte, send byte, and receive byte commands to
configure the device.
The TMP421-Q1, TMP422-Q1, and TMP423-Q1
include series resistance cancellation, programmable
non-ideality factor, wide remote temperature
measurement range (up to +150°C), and diode fault
detection.
The TMP421-Q1, TMP422-Q1, and TMP423-Q1 are
all available in an 8-pin SOT-23 package.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TMP421-Q1
TMP422-Q1
TMP423-Q1
SOT-23 (8)
2.90 mm × 1.63 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Diode Input Configurations for the TMP421-Q1, TMP422-Q1, and TMP423-Q1
5V
TMP421-Q1
1
DXP
2
DXN
3
A1
4
A0
1 Channel Local
1 Channel Remote
TMP422-Q1
1
DX1
2
DX2
3
DX3
4
DX4
1 Channel Local
2 Channels Remote
TMP423-Q1
1
DXP1
2
DXP2
8
V+
SCL ⁷
SDA ⁶
SMBus
Controller
3
DXP3
4
DXN
GND
1 Channel Local
3 Channels Remote
5
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.