M61510AFP Ver la hoja de datos (PDF) - Renesas Electronics

Número de pieza

componentes Descripción

Fabricante

M61510AFP

Sound Controller for Quality/Sound Field Control, with Built-in Surround Sound

Renesas Electronics 

M61510AFP

(5) Loudness

This IC incorporates a center-tap loudness circuit.

Volume input

selector A

0dB to -16dB:

1dB steps

Loudness

circuitry

Tone and

surround

block

Loudness

SW

LOUD1,2

11,32pin

+VSELB OUT1,2

1 7 , 2 6 pin

VOL IN1,2

1 8 , 2 5 pin

-

Volume input selector B

VOL OUT1,2

1 9 , 2 4 pin

+-

0dB to -64dB:1dB steps

The loudness circuitry fo is determined by the

50 kΩ internal resistance and the external

capacitor C, represented by the following equation.

fo = 1/ (2π × 50kΩ × C) Hz

When C = 0.1 µF,

fo = 1/(2π × 50kΩ × 0.1µF) = 32 Hz

<Characteristic curves>

0dB

-10dB

-16dB

-20dB

fo=32 100

1k

10k

Frequency f (Hz)

(6) Equivalent circuit with surround on

5k

5k

Ch2

Out2

1k

5k

200k

1µ

10k

External

5k

5k

200k

Out1

Ch1

5k

5k

Rev.1.00, Aug.07.2003, page 16 of 22

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