TDA8809T 查看數據表（PDF） - Philips Electronics
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产品描述 (功能)
比赛名单
TDA8809T Datasheet PDF : 16 Pages
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Philips Semiconductors
Radial error signal processor for compact
disc players
PINNING
PIN MNEMONIC
DESCRIPTION
1
VP
2
Cosc1
3
Cosc2
4
Rwob
5
Rosc
Positive supply voltage
Frequency setting capacitors for
oscillator
Wobble generator input
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
10 B1
11 B0
Input control bits for off-, catch-,
play-status and DAC output
current
12 Vext(+)
13 Vext(−)
Positive external voltage input
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
17 RElag
Voltage output of integrated
(Re2 - Re1) input currents
18 Lag
Connection of integrator capacitor
for (Re1 - Re2) input currents
19 Lead
Lead output
20 Vref
21 AGC
Internal reference voltage output
Gain control input for radial error
signal
22 RDAC
23 offset in
Biassing resistor for current
output for track jumping (31⁄2 bits)
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
November 1987
4
Product specification
TDA8809T
Fig.2 Pinning diagram.
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