SVA-1268117

SVA-1268116

LM60/LM60-Q1

SVA-1268115

LM60/LM60-Q1

LM60/LM60-Q1

www.ti.com

SNIS119D – MAY 2004 – REVISED NOVEMBER 2012

Table 1. Temperature Rise of LM60/LM60-Q1 Due to Self-Heating and Thermal Resistance (

no heat sink

small heat fin

no heat fin

small heat fin

(°C/W)

(°C)

(°C/W)

(°C)

Still air

450

0.17

260

0.1

180

0.07

140

0.05

Moving air

180

0.07

90

0.034

70

0.026

(1)

Part soldered to 30 gauge wire.

(2)

Heat sink used is 1/2" square printed circuit board with 2 oz. foil with part attached as shown in Figure 13.

(3)

Part glued or leads soldered to 1” square of 1/16” printed circuit board with 2 oz. foil or similar.

Capacitive Loads

The LM60/LM60-Q1 handles capacitive loading well. Without any special precautions, the LM60/LM60-Q1 can

drive any capacitive load as shown in Figure 14. Over the specified temperature range the LM60/LM60-Q1 has a

maximum output impedance of 800

Ω. In an extremely noisy environment it may be necessary to add some

filtering to minimize noise pickup. It is recommended that 0.1

μF be added from +V S to GND to bypass the

power supply voltage, as shown in Figure 15. In a noisy environment it may be necessary to add a capacitor

from the output to ground. A 1

μF output capacitor with the 800Ω output impedance will form a 199 Hz lowpass

filter. Since the thermal time constant of the LM60/LM60-Q1 is much slower than the 6.3 ms time constant

formed by the RC, the overall response time of the LM60/LM60-Q1 will not be significantly affected. For much

larger capacitors this additional time lag will increase the overall response time of the LM60/LM60-Q1.

Figure 14. LM60/LM60-Q1 No Decoupling Required

Figure 15. LM60/LM60-Q1 with Filter for Noisy

for Capacitive Load

Environment

Figure 16. Simplified Schematic

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