TDA9605H/N1 查看數據表（PDF） - Philips Electronics

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TDA9605H/N1

Audio processor with head amplifier for VHS hi-fi

Philips Electronics 

Philips Semiconductors

Audio processor with head amplifier for VHS hi-fi

Product specification

TDA9605H

handbook, full pagewidth

left channel audio:

output select

hi-fi

right channel audio:

output select

hi-fi

FULL-WAVE

RECTIFIER

FULL-WAVE

RECTIFIER

EOS • AFM

SQUARE ROOT

COMPRESSION

SQUARE ROOT

COMPRESSION

td

RESET

PEAK HOLD

RESET

PEAK HOLD

SAMPLE

SAMPLE-

AND-HOLD

SAMPLE

SAMPLE-

AND-HOLD

1.3 or 1.4 MHz carrier

1.7 or 1.8 MHz carrier

HF LEVEL DETECTOR

HF LEVEL DETECTOR

RM

HID

RMHID

AF

envelope

ENVOUT

EOS • AFM

HF

envelope

test 10

MGR845

Fig.9 Functional diagram of the envelope output circuit.

handbook, full paIg2eCw-ibduths

registers

HID signal

EOS = 1 and

AFM = 0

EOS = 0 or AFM = 1

HID period

ENVOUT

level meter

display

0

1

2

3

peak right

in period −1

HF envelope

peak left

in period 0

peak right

in period 0

peak left

in period 1

peak right

in period +1

peak left

in period 2

peak right peak left

in period +2 in period +3

tracking level

indication

left (period 0)

right (period 0)

left (period 1)

right (period 1)

left (period 2)

right (period 2)

MGR844

1999 Apr 14

Fig.10 Timing diagram of the envelope output signal.

15

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