ICs for Audio Common Use

AN7196Z

7

s Technical Information

120

113.6

100

80

59.5

60

40.3

40

30.5

20.5

11.3

1.8

0

0

25

50

75

100

125

150

20

Infinity heat sink

1

2

3

5

10

Without heat sink

Ambient temperature T

[2] Application note

1. Standby function

1) The power can be turned on or off by

making pin 5 (standby terminal) high

or low.

2) The standby terminal has threshold

voltage of approx. 2.1 V, however, it

has temperature dependency of

approx.

− 6 mV/°C. The recommended

range of use is shown in table 1.

3)

The internal circuit of standby terminal is as shown in figure 1. When the standby terminal is high, the current

approximately expressed by the following equation will flow into the circuit.

[mA]

10 k

Ω

Figure 1

4) A power supply with no ripple component should be used for the control voltage of standby terminal .

3.5 k

Ω 3.5 kΩ 3.5 kΩ 3.5 kΩ

10 k

Ω

5 V

0 V

5

RF

Sub

Constant

current source

Protection

circuit

Terminal state

Terminal voltage

Power

Open

0 V

Standby state

Low

0 V to 1.0 V

Standby state

High

Higher than 3 V

Operating state

Table 1