1.5V Dual-Gain Analog Temperature Sensor with Class-AB Output

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The SGM447 is a high-accuracy analog output CMOS integrated-circuit temperature sensor with tiny WLCSP package. It can operate with a supply voltage of 1.5V in the lowest gain configuration while measuring the temperature of -55 to +150.

The SGM447 is capable of strong output source and sink current while driving heavy loads in that it has class-AB output. Therefore, it is available for sourcing the input of a sample-and-hold analog-to-digital converter requiring transient load. Without using external components such as resistors and buffers on the output, the SGM447 can deliver the output voltage inversely proportional to measured temperature from -55 to +150. Low supply current makes it suitable for application in general temperature sensors and battery-powered systems.

The gain of the temperature-to-voltage output transfer function is set by the gain selection input (GS) pin with two selectable slopes, (-5.4mV/ at GS = 0 or -8.1mV/ at GS = 1). If the GS pin is connect to logic high, the transfer function will achieve the maximum temperature sensitivity gain. The GS pin can be connected to VDD or GND without any components such as pull-up or pull-down resistors to minimize the board area. During operation or system diagnostics, if the input is driven by a logical signal, then the system will optimize the gain.

The SGM447 is available in a Green WLCSP-0.8×0.8-4B-A package. It is specified over a wide temperature range of -55 to +150.

  • Power Supply Voltage: 1.5V to 5.5V

  • Low Quiescent Current

  • Temperature Accuracy:

    -20 to +85: ±2.5 (MAX)

    -55 to +150: ±3.5 (MAX)

  • Two Selectable Gains

  • 300μA (MAX) Source Current

  • Push-pull Output

  • Output Short-Circuit Protection

  • Operating Temperature Range: -55 to +150

  • Available in a Green WLCSP-0.8×0.8-4B-A Package


Temperature Sensing and Compensation

Battery Management

Automotive Equipment

Ordering Information
Part Number
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
-55℃ to +150℃
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 98 days

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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