1 Features
1• 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
• Push-Pull Output With ±50-μA Source Current
Capability
• Four Selectable Gains
• Very Accurate Over Wide Temperature Range of
−50°C to +150°C:
– ±1.5ºC Temperature Accuracy for 20ºC to
40ºC Range
– ±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
• 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

2 Applications
• Automotive
• Cell Phones
• Wireless Transceivers
• Battery Management
• Disk Drives
• Games
• Appliances

3 Description
The LM94022/-Q1 device is a precision analog output
CMOS integrated-circuit temperature sensor with
selectable linear negative temperature coefficient
(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.
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.