The LM94023 is a precision analog output CMOS integrated-circuit temperature sensor that operates at a supply voltage as low as 1.5 Volts. Available in the very small four-bump DSBGA 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-to-voltage 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 V_DD 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.

• 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 DSBGA Package
• Footprint Compatible with the Industry-standard LM20 Temperature Sensor

• Supply Voltage 1.5V to 5.5V
• Supply Current 5.4 μA (typ)
• Output Drive ±50 μA
• Temperature Accuracy
  • 20°C to 40°C ±1.5°C
  • –50°C to 70°C ±1.8°C
  • –50°C to 90°C ±2.1°C
  • –50°C to 150°C ±2.7°C
• Operating Temperature ?50°C to 150°C

• Local sensor accuracy (Max) (+/- C)
• 1.5
• Operating temperature range (C)
• -50 to 150
• Supply voltage (Min) (V)
• 1.5
• Supply voltage (Max) (V)
• 5.5
• Supply current (Max) (uA)
• 8.1
• Interface type
• Analog output
• Sensor gain (mV/Deg C)
• -5.5 or -8.2
• Rating
• Catalog
• Features
• Selectable gain setting

LM94023的完整型号有：LM94023BITME/NOPB、LM94023BITMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM94023BITME/NOPB，工作温度：-50 to 150，封装：DSBGA (YFQ)-4，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM94023BITME/NOPB的批量USD价格：.348（1000+）

LM94023BITMX/NOPB，工作温度：-50 to 150，封装：DSBGA (YFQ)-4，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM94023BITMX/NOPB的批量USD价格：.29（1000+）

LM9402XEVM — 用于多增益模拟温度传感器的评估模块

The Texas Instruments LM9402xEVM evaluation module helps designers evaluate the operation and performance of the LM94021, LM94022, and LM94023 analog temperature sensors.

LM9403X-DESIGNAID-CALC — LM94021 LM94022 LM94023 辅助设计