M65818AFP datasheet(26/39 Pages) RENESAS

tên linh kiện	M65818AFP

Giải thích chi tiết về linh kiện	Digital Amplifier Processor of S-Master Technology

PDF	39 Pages

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nhà sản xuất	RENESAS [Renesas Technology Corp]

Trang chủ	http://www.renesas.com

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M65818AFP

Rev.1.00, Sep.04.2003, page 26 of 38

Table (6-1-2). The Gain Data and Output Level

Gain Data

Polarity

Absolute Output Value

Output Level

10100/11111111 (b)

10001/10000000 (b)

10000/10000000 (b)

15.9375

1.0

0.5

+30.069dB

+6.021dB

0dB

01111/11111111 (b)

00000/10000000 (b)

00000/00000001 (b)

00000/00000000 (b)

0.498046875

0.5*

-16

0.00390625*2-16

infinity zero

-0.0340dB

-96.330dB

-138.474dB

∞

• Calculation method of Gain value.

The way to calculation of Gain value from Gain Data is following equation.

Gain value = 20log

[ 2

Mantissa data (decimal value)

128

] dB

• Soft Mute.

The Soft Mute function is executed by setting of Gain Data as 00000/00000000b

( "/" :means dividing point between index part and mantissa part).

The release from Soft Mute function must be executed by setting the gain data before soft mute.

The Soft Mute function and release from there don't have linear curve but

have characteristics of approximate exponential curve.

Output amplitude

T = xxxx/Fs(sec)

0.5

00000/00000000b

10000/10000000b setting

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