Sharp DX-361HM - IC2 Function Table; IC2 VHITDA8809;-1 Function Table

®
IC2 VHiTDA880S/-1 (TDA880ST)
Pin Terminal
Function
No.
Name
1
Vp
Positive supply voltage
2 Cosc 1
Frequency setting capacitors
for oscillator
3
Cosc 2
Frequency setting capacitors for oscillator
4
Rwob
Wobble generator input
5
Rosc
Biassing resistor for oscillator frequency and
internal amplitude
6
DIV4 Divide-by- 4 input
7
REdig Digital output of sign (Re2 - Re1)
8
B3
9
B2
Input control bits
for off-, catch-, play-status
10
B1
and DAC output current
11
BO
12
Vext{+)
Positive external voltage input
13
Vextt-)
Negative external
voltage input (also
substrate connection)
14
GND Negative supply connection
15
RADout
Current output of
amplified (Re2 - Re1) input
currents
16
REin Radial error input
Pin
Terminal
Function
No. Name
17
RElag
Voltage output of integrated (Re2
- Re1)
input currents
18
Lag
Connection of integrator capacitor
for (He1 -
Re2) input currents
19 Lead Lead output
20
Vref Internal reference voltage output
21 AGC Gain control input for radial error signal
22
RDAC
Biassing resistor for current output for
track
jumping (3 1/2 bits) .
23 offset in Offset control input for radial offset
24 offset out Offset control output for radial offset
25
CLPF
Low-pass
filter for Re1 and Re2, used for
radial offset
control
26 CHPF
High-pass
filter for Re1 and Re2, used for
radial offset control
27 Re1
Input for
amplified currents
from
photo-
diodes D1 and D2
28 Re2
Input for
amplified
currents
from
photo-
diodes D3 and D4
IC2 VHiTDA880S/-1 (TDA8809T)
u
8
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o
8
m
~
4[)--@-----------------------,
INPUT MIRROR
RE1 (27)-------1
Re2 Re2
~
Re1+Re2
r--o-----------------<Yo: 0<I-50~A
45°
RDAC
11 10 9 8
80818283 OFFSET
IN
~}---(ID----_(?3}(24~@_-_@----------_(jIJXiK9)®_----<~--l
OFtJfT CLPF CHPF
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