TA8208H データシートの表示（PDF） - Toshiba
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TA8208H Datasheet PDF : 10 Pages
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Block Diagram
TA8208H
Caution And Application Method
1. Voltage gain adjustment
The voltage gain GV is determined by R1, R2
and Rf in Fig.1.
GV
=
20log
Rf + R1 + R2
Rf + R1
(dB)
In case of Rf = 0
The voltage gain is set as follows:
GV = 52dB (typ.)
2. Muting
Audio muting can be accomplished by connecting pin (6) (ripple filter) to GND as shown in Fig.2.
Then, the bias circuits are cut off.
However, caution must be exercised to the following items.
(1) The recovery time from the muting operation is determined by the capacities of the ripple filter capacitor
between (6) pin and GND, and of the capacitor for NF.
(2) As this muting system is operated by the short-circuit of ripple filter: C5, the ripple rejection ratio becomes
worse in the muting condition.
At mute on, some pop noises of breaking the bias are produced.
2
2002-10-30
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