DESCRIPTION
The LM94021BIMG/NOPB is a precision analog output CMOS integrated-circuit temperature sensor that operates at a supply voltage as low as 1.5V. While operating over the wide temperature range of-50℃ to +150℃, the LM94021BIMG/NOPB delivers an output voltage that is inversely proportional to measured temperature. The LM94021's low supply current makes it ideal for battery-powered systems as well as general temperature sensing applications.Two logic inputs, Gain Select 1 (GS1) and Gain Select 0(GSO), select the gain of the temperature-to-voltage output transfer function. Four slopes are selectable:-5.5 mV/C,-8.2 mV/C,-10.9 mV/℃, and-13.6 mV/C. In the lowest gain configuration(GS1 and GS0 both tied low), the LM94021BIMG/NOPB can operate with a 1.5V supply while measuring temperature over the full -50℃ to +150℃ operating range. Tying both inputs high causes the transfer function to have the largest gain of -13.6 mV/C for maximum temperature sensitivity. The gain-select inputs can be tied directly to Vop or Ground without any pull-up or pull-down 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.
FEATURES
·LM94021Q is AEC-Q100 Grade 0 Qualified andis Manufactured on an Automotive Grade Flow
·Low 1.5V Operation
·Four Selectable Gains
·Very Accurate Over Wide Temperature Range of-50°℃ to +150℃
·Low Quiescent Current
·Output is Short-Circuit Protected
·Extremely Small SC70 Package
·Footprint Compatible with the Industry-Standard LM20 Temperature Sensor
·UL Recognized Component U APPLICATIONS·Cell Phones
·Wireless Transceivers
·Battery Management
·Automotive
·Disk Drives
·Games
·Appliances
Feature
- LM94021Q is AEC-Q100 Grade 0 Qualified and is Manufactured on an Automotive Grade Flow
- Low 1.5V Operation
- Four Selectable Gains
- Very Accurate Over Wide Temperature Range of ?50°C to +150°C
- Low Quiescent Current
- Output is Short-Circuit Protected
- Extremely Small SC70 Package
- Footprint Compatible with the Industry-Standard LM20 Temperature Sensor
- UL Recognized Component
The LM94021 is a precision analog output CMOS integrated-circuit temperature sensor that operates at a supply voltage as low as 1.5V. While operating over the wide temperature range of ?50°C to +150°C, the LM94021 delivers an output voltage that is inversely proportional to measured temperature. The LM94021's low supply current makes it ideal for battery-powered systems as well as general temperature sensing applications.
Two logic inputs, Gain Select 1 (GS1) and Gain Select 0 (GS0), select the gain of the temperature-to-voltage output transfer function. Four slopes are selectable: ?5.5 mV/°C, ?8.2 mV/°C, ?10.9 mV/°C, and ?13.6 mV/°C. In the lowest gain configuration (GS1 and GS0 both tied low), the LM94021 can operate with a 1.5V supply while measuring temperature over the full ?50°C to +150°C operating range. Tying both inputs high causes the transfer function to have the largest gain of ?13.6 mV/°C for maximum temperature sensitivity. The gain-select inputs can be tied directly to VDD or Ground without any pull-up or pull-down 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.
(Picture:Pinout / Diagram)
