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24
RC-999I1
SEMICONDUCTOR DATA
7. Electronic VR TC9188F : X25-3010-11, IC6
General
The TC9188F
is an electronic VR system incorporating
the VRs
required
for the Volume,
Balance, Fader, Bass,
Treble and loudness controls on a monolithic chip.
® The VRs
are selected and controlled
as desired
by ap-
plying the specified serial data.
Reference diagrams
Tone control characteristic
HT
Volume: 0 to ~79dB (1dB/step)
Fader: 0 to —60dB (16 steps)
Tone: +12dB for both Bass and Treble (2dB/step)
Loudness:
The IC can be interfaced directly with the microproc-
essor because the logic level at the serial data input ter-
minals is 0 to 5V.
The
C-MOS
structure
enables wide operation voltage
range and low current consumption.
Loudness characteristic
Vpp=12V,
ATT=0dB
Vpp=12V, TONE
FLAT
——
LOUDNESS
OFF
16
OdB+V QYyT=300mVrms
OdB+V gt =300mVrms
~=—
LOUDNESS ON
12
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10
30
50
100
300 500
1k
3k 5k
10k
30k
FREQUENCY (Hz)
FREQUENCY (Hz)
Terminal description
Terminal configuration diagram
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ATT1-l
TONE-O
ATT1-0
TREBLE-C —
LD2
inc}
L—
.o1
DATA
Yop
cK
(Vpp)
(TOP VIEW)
(Vpp}
Vss
GND
r—
opt
of
LD2
(NC)
ATT1-0
TREBLE-C—
ATT1+1
TONE-O
A-GND
[J1 atT24
[] 2
ATT2-0
[] 3
FADER-|
[] 6
FADER-G
[] 7
TONE-|
[7] 8
Bassi
[]9
BASS-COM
[[] 10
BASS2
LCH
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