LA4627

No.6501-4/6

3. FILTER (decoupling) pin (pin 8)

The pin voltage is about 1/2 VCC.

The recommended value for the filter capacitor is 100

µF.

The pulse noise that occurs when the standby pin is set low (power off) will be degraded if a value under 100

µF is

used.

4. P.P (pulse noise) pin (pin 9)

Pin 9 pin voltage

≈ VCC - VCE (about 0.3 V) - 5.6 V

+ 5.6 V

2 k

Ω

• The recommended value for the P.P capacitor is 4.7

µF.

The pulse noise that occurs when the standby pin is set low (power off) will

be degraded if a value under 2.2

µF is used.

Furthermore, if a value over 10

µF is used, the signal may not be cut off and

sound may remain audible when the standby pin is set low (power off).

5. MUTE (Muting)

The output signal can be controlled by shifting the pin 8 (FILTER) level towards ground with a 300 to 500

Ω resistor.

However, note that the degree of suppression is reduced if a value of 750

Ω or more is used.

ILA00061

ILA00062

Filter capacitor = 100

µF

Filter capacitor = 47

µF

Output DC voltage

Output DC voltage

AC voltage (100 mV)

AC voltage (200 mV)

VCC

9

ILA00063

Zener voltage

= 5.6 V

To the input amplifier

block/bias system

ILA00064

Mute ON

Mute OFF

Output DC voltage

Output AC voltage