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LM94023 Dataheets PDF



Part Number LM94023
Manufacturers National Semiconductor
Logo National Semiconductor
Description Dual-Gain Analog Temperature Sensor
Datasheet LM94023 DatasheetLM94023 Datasheet (PDF)

LM94023 1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output September 10, 2008 LM94023 1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output General Description The LM94023 is a precision analog output CMOS integratedcircuit temperature sensor that operates at a supply voltage as low as 1.5 Volts. Available in the very small four-bump microSMD 0.8mm x 0.8mm) the LM94023 occupies very little board area. A class-AB output structure gives the LM94023 str.

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LM94023 1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output September 10, 2008 LM94023 1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output General Description The LM94023 is a precision analog output CMOS integratedcircuit temperature sensor that operates at a supply voltage as low as 1.5 Volts. Available in the very small four-bump microSMD 0.8mm x 0.8mm) the LM94023 occupies very little board area. A class-AB output structure gives the LM94023 strong output source and sink current capability for driving heavy loads, making it well suited to source the input of a sample-and-hold analog-to-digital converter with its transient load requirements, This generally means the LM94023 can be used without external components, like resistors and buffers, on the output. While operating over the wide temperature range of −50°C to +150°C, the LM94023 delivers an output voltage that is inversely porportional to measured temperature. The LM94023's low supply current makes it ideal for battery-powered systems as well as general temperature sensing applications. A Gain Select (GS) pin sets the gain of the temperature-tovoltage output transfer function. Either of two slopes are selectable: −5.5 mV/°C (GS=0) or −8.2 mV/°C (GS=1). In the lowest gain configuration, the LM94023 can operate with a 1.5V supply while measuring temperature over the full −50°C to +150°C operating range. Tying GS high causes the transfer function to have the largest gain 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. Applications ■ Cell phones ■ Wireless Transceivers ■ Battery Management ■ Automotive ■ Disk Drives ■ Games ■ Appliances Features ■ Low 1.5V operation ■ Push-pull output with 50µA source current capability ■ Two selectable gains ■ Very accurate over wide temperature range of −50°C to +150°C ■ Low quiescent current ■ Output is short-circuit protected ■ Extremely small microSMD package ■ Footprint compatible with the industry-standard LM20 temperature sensor Key Specifications ■ Supply Voltage ■ Supply Current ■ Output Drive ■ Temperature Accuracy ■ Operating Temperature 20°C to 40°C -50°C to 70°C -50°C to 90°C -50°C to 150°C 1.5V to 5.5V 5.4 μA (typ) ±50 μA ±1.5°C ±1.8°C ±2.1°C ±2.7°C −50°C to 150°C Connection Diagram Typical Transfer Characteristic micro SMD Output Voltage vs Temperature Top View See NS Package Number TMD04AAA 30075001 © 2008 National Semiconductor Corporation 300750 30075024 www.national.com LM94023 Typical Application Full-Range Celsius Temperature Sensor (−50°C to +150°C) Operating from a Single Battery Cell Ordering Information Order Number LM94023BITME LM94023BITMX Temperature Accuracy ±1.5°C to ±2.7°C ±1.5°C to ±2.7°C Pin Descriptions Label GS Pin Number Type A1 Logic Input 30075002 NS Package Number TMD04AAA TMD04AAA Device Marking Date Code Date Code Transport Media 250 Units on Tape and Reel 3000 Units on Tape and Reel Equivalent Circuit Function Gain Select - Input for selecting the slope of the analog output response GND VOUT A2 Ground B1 Analog Output Power Supply Ground Outputs a voltage which is inversely proportional to temperature VDD B2 Power Positive Supply Voltage www.national.com 2 LM94023 Absolute Maximum Ratings (Note 1) Supply Voltage Voltage at Output Pin Output Current Voltage at GS Input Pin Input Current at any pin (Note 2) Storage Temperature Maximum Junction Temperature (TJMAX) ESD Susceptibility (Note 3): Human Body Model −0.3V to +6.0V −0.3V to (VDD + 0.3V) ±7 mA −0.3V to +6.0V 5 mA −65°C to +150°C +150°C 2500V Machine Model Soldering process must comply with National's Reflow Temperature Profile specifications. Refer to www.national.com/packaging. (Note 4) 250V Operating Ratings (Note 1) Specified Temperature Range: LM94023 Supply Voltage Range (VDD) Thermal Resistance (θJA) LM94023BITME, LM94023BITMX  TMIN ≤ TA ≤ TMAX −50°C ≤ TA ≤ +150°C +1.5 V to +5.5 V 122.6°C/W Accuracy Characteristics These limits do not include DC load regulation. These stated accuracy limits are with reference to the values in the LM94023 Transfer Table. Parameter Conditions Limits (Note 7) Units (Limit) Temperature Error GS=0 (Note 8) GS=1 TA = +20°C to +40°C; VDD = 1.5V to 5.5V TA = +0°C to +70°C; VDD = 1.5V to 5.5V TA = +0°C to +90°C; VDD = 1.5V to 5.5V TA = +0°C to +120°C; VDD = 1.5V to 5.5V TA = +0°C to +150°C; VDD = 1.5V to 5.5V TA = −50°C to +0°C; VDD = 1.6V to 5.5V TA = +20°C to +40°C; VDD = 1.8V to 5.5V TA = +0°C to +70°C; VDD = 1.9V to 5.5V TA = +0°C to +90°C; VDD = 1.9V to 5.5V TA = +0°C to +120°C; VDD = 1.9V to 5.5V TA = +0°C to +150°C; VDD = 1.9V to 5.5V TA = −50°C to +0°C; VDD = 2.3V to 5.5V ±1.5 ±1.8 ±2.1 ±2.4 ±2.7 ±1.8 ±1.5 ±1.8 ±2.1 ±2.4 ±.


TLE4998S3C LM94023 ICX418ALB


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