Temperature (qC)

-60

-40

-20

0

20

40

60

80

100 120 140 160

0

0

1

0.8

2

1.6

3

2.4

4

3.2

5

4

6

4.8

7

5.6

d011

Temperature (qC)

0

25

50

75

100

125

150

0

1

2

3

4

5

6

D014

17

TMP61

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SBOS921 – DECEMBER 2018

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Typical Application (continued)

Figure 20. Thermal Foldback Voltage Output Curve

9.2.1.3 Application Curve

The TMP61 accuracy varies depending on the selected biasing circuit. This variation can be seen in Figure 21.

sources used are assumed to be ideal. The best accuracy is achieved using a direct current bias method.

Figure 21. TMP61 Voltage Output and Temperature Error Based on the Bias Method

10 Power Supply Recommendations

11 Layout

11.1 Layout Guidelines

The layout of the TMP61 is similar to that of a passive component. If the device is biased with a current source,

the positive pin 2 will be connected to the source, while the negative pin 1 will be connected to ground. If the

circuit is biased with a voltage source, and the device is placed on the lower side of the resistor divider, V– will

layout is as shown in Figure 22.