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LM94022, LM94022-Q1
SNIS140F –MAY 2006–REVISED SEPTEMBER 2015
LM94022/-Q1 1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output
1 Features
3 Description
The LM94022/-Q1 device is a precision analog output
CMOS integrated-circuit temperature sensor with
selectable linear negative temperature coefficient
1
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LM94022/-Q1 is AEC-Q100 Grade 0 qualified and
is Manufactured on an Automotive Grade Flow
Low 1.5-V to 5.5-V Operation With Low 5.4-µA
Supply Current
(NTC).
A class-AB output structure gives the
LM94022/-Q1 strong output source and sink current
capability for driving heavy transient loads such as
that presented by the input of a sample-and-hold
analog-to-digital converter. The low 5.4-µA supply
current and 1.5-V operating voltage of the LM94022/-
Q1 make it ideal for battery-powered systems as well
as general temperature-sensing applications.
Push-Pull Output With ±50-µA Source Current
Capability
•
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Four Selectable Gains
Very Accurate Over Wide Temperature Range of
−50°C to +150°C:
–
–
–
–
±1.5ºC Temperature Accuracy for 20ºC to
40ºC Range
The Gain Select 1 (GS1) and Gain Select 0 (GS0)
logic inputs select one of four gains for the
temperature-to-voltage output transfer function: −5.5
mV/°C, −8.2 mV/°C, −10.9 mV/°C, and −13.6 mV/°C.
Selecting –5.5 mV/°C (GS1 and GS0 both tied low),
allows the LM94022/-Q1 to operate down to 1.5-V
supply while measuring temperature over the full
range of −50°C to +150°C. Maximum temperature
sensitivity, –13.6 mV/°C, is selected when GS1 and
GS0 are both tied high. The gain-select inputs can be
tied directly to VDD or Ground without any pullup or
pulldown resistors, reducing component count and
board area. These inputs can also be driven by logic
signals allowing the system to optimize the gain
during operation or system diagnostics.
±1.8ºC Temperature Accuracy for –50ºC to
70ºC Range
±2.1ºC Temperature Accuracy for –50ºC to
90ºC Range
±2.7ºC Temperature Accuracy for –50ºC to
150ºC Range
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Output is Short-Circuit Protected
Extremely Small SC70 Package
For the Similar Functionality in a TO-92 Package,
See LMT84, LMT85, LMT86, or LMT87
•
Footprint Compatible With the Industry-Standard
LM20 Temperature Sensor
Device Information(1)
PART NUMBER
LM94022
PACKAGE
BODY SIZE (NOM)
2 Applications
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Automotive
SC70 (5)
2.00 mm × 1.25 mm
LM94022-Q1
Cell Phones
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Wireless Transceivers
Battery Management
Disk Drives
Games
Appliances
Full-Range Celsius Temperature Sensor (–50°C to
+150°C) Operating from a Single Cell Battery
Output Temperature Characteristic
V
(+1.5V to +5.5V)
DD
V
DD
Single Battery
Cell
LM94022
GS1
OUT
GS0
GND
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.