8

LM61

SNIS121J – JUNE 1999 – REVISED NOVEMBER 2016

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8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The LM61 has a wide supply range and a 10-mV/°C output slope with a 600-mV DC. Therefore, it can be easily

applied in many temperature-sensing applications where a single supply is required for positive and negative

temperatures.

8.2 Typical Applications

8.2.1 Typical Temperature Sensing Circuit

VO = 10 mV/°C × T°C + 600 mV

Figure 11. Typical Temperature Sensing Circuit Diagram

8.2.1.1 Design Requirements

For this design example, use the parameters listed in Table 1 as the input parameters.

Table 1. Design Parameters

PARAMETER

VALUE

Power supply voltage

2.7 V to 3.3 V

Accuracy at 25°C

±2°C (maximum)

Accuracy over –25°C to 85°C

±3°C (maximum)

Temperature slope

10 mV/°C