LA4613

No. 6014-4/7

1. Standby switching function (9)

Power is switched ON and OFF by controlling the High and Low states at pin 9,

respectively (standby). To switch power ON, apply 1.5V or more, or 800

µA to

pin 9.

• When directly connecting the microcontroller with this pin, add a

resistor in series to optimize the current for the microcontroller.

2. Input pins (11,13)

Input impedance is approx. 30 k

Ω.

• The recommended value for the input capacitor is 0.22

µF, but this can be varied in order to adjust the starting time

(ts). (The starting time is the time required from applying voltage to the standby pin until sound output is ob-

tained.)

3. Filter (decoupling) pin (7)

The recommended value for the filter capacitor is 100

µF.

When capacitance is lower, pop noise when setting the standby pin to Low (power OFF) will increase.

Filter capacitor= 100

Filter capacitor= 47

Current supplied to pin 9

Applied voltage

2 k

Ω

2 k

Ω

+

Pin Descriptions

Input capacitator

1.0

µF

2.2

µF

3.3

µF

4.7

µF

10

µF

Starting time t

s

0.2s

0.3s

0.5s

0.65s

1.5s

9

To bias circuit

VCC

2k

Ω

2k

Ω

AC voltage (100 mV)

Output DC voltage

AC voltage (200 mV)

Output DC voltage

A11495

A11496

.

=

.