LA4440

No.750–6/13

(g) In case of applying audio muting in each application circuit, the following circuit is used.

6V

≤V

In case of increasing the muting attenuation, resistor 5.6k

Ω is connected in series with the input, and then the

attenuation is made to be 55dB. Be careful that connecting an input capacitor causes pop noise to be increased at

pletely cutting off power IC, pin (5) is grounded, and then DC control is available and the attenuation is made to

be

∞.

Stereo

: 20

Ω≤R≤100Ω

Bridge No.1 : 20

Ω≤R≤100Ω

Bridge No. 2 : 0

Ω≤R≤50Ω

Pin Voltage (unit : V)

.

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0

11

12

13

14

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A

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2

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62

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69

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1

10

Proper Cares in Using IC

· Maximum ratings

If the IC is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum

ratings to be exceeded, thereby leading to breakdown. Allow an ample margin of variation for supply voltage, etc. and

use the IC in the range where the maximum ratings are not exceeded.

· Printed circuit board

When making the board, refer to the sample printed circuit pattern and be careful that no feedback loop is formed

between input and output.

· Oscillation preventing capacitor

Normally, a polyester film capacitor is used for 0.1

µF + 4.7Ω. The capacitance value can be reduced to 0.047µF depend-

ing on the stability of the board.

· Others

Connect the radiator fin of the package to GND.