Philips TDA8809T Datasheet
INTEGRATED CIRCUITS
DATA SH EET
TDA8809T
Radial error signal processor for
compact disc players
Product specification
File under Integrated Circuits, IC01
November 1987
Philips Semiconductors Product specification
Radial error signal processor for
TDA8809T
compact disc players
GENERAL DESCRIPTION
The TDA8809T is a bipolar integrated circuit which provides control signals for the radial motor. These control signals
are generated from radial error signals received from a photo-diode signal processor (TDA8808), and velocity control
signals from the control processor.
Features
• Tracking error processor with automatic asymmetry control
• AGC circuity with automatic start-up and wobble generator
• Tracking control for fast forward/reverse scan, search, repeat and pause functions
• Radial polarity - 4 - tracks counting
• Possibility for car, home and portable applications.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
V
V
V
V
I
P
T
P
ex(+)
ext(−)
ext(+)
amb
− V
ext(−)
Supply voltage range 4,5 5,0 5,5 V
External voltage range
pin 12 V
P
10 12 V
pin 13 −5,5 −5,0 0 V
pin 12 to pin 13 4,5 − 12 V
Supply current − 5,3 − mA
Operating ambient temperature range −30 − +85 °C
PACKAGE OUTLINE
28-lead mini-pack; plastic (S028; SOT136A); SOT136-1; 1996 August 15.
November 1987 2
Philips Semiconductors Product specification
Radial error signal processor for compact
disc players
TDA8809T
November 1987 3
Fig.1 Block diagram.
Philips Semiconductors Product specification
Radial error signal processor for compact
disc players
PINNING
PIN MNEMONIC DESCRIPTION
1V
2C
3C
4R
5R
6
P
osc1
osc2
wob
osc
DIV4 Divide-by-4 input
7 REdig Digital output of sign (Re2 - Re1)
8B3
9B2
10 B1
11 B0
12 V
13 V
ext(+)
ext(−)
14 GND Negative supply connection
15 RADout Current output of amplified
16 REin Radial error input
17 RElag Voltage output of integrated
18 Lag Connection of integrator capacitor
19 Lead Lead output
20 V
ref
21 AGC Gain control input for radial error
22 R
DAC
23 offset in Offset control input for radial
24 offset out Offset control output for radial
25 C
26 C
LPF
HPF
27 Re1 Input for amplified currents from
28 Re2 Input for amplified currents from
Positive supply voltage
Frequency setting capacitors for
oscillator
Wobble generator input
Biassing resistor for oscillator
frequency and internal amplitude
Input control bits for off-, catch-,
play-status and DAC output
current
Positive external voltage input
Negative external voltage input
(also substrate connection)
(Re2 - Re1) input currents
(Re2 - Re1) input currents
for (Re1 - Re2) input currents
Internal reference voltage output
signal
Biassing resistor for current
output for track jumping (31⁄2 bits)
offset
offset
Low-pass filter for Re1 and Re2,
used for radial offset control
High-pass filter for Re1 and Re2,
used for radial offset control
photo-diodes D1 and D2
photo diodes D3 and D4
TDA8809T
Fig.2 Pinning diagram.
November 1987 4
Philips Semiconductors Product specification
Radial error signal processor for compact
TDA8809T
disc players
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
SYMBOL PARAMETER MIN. MAX. UNIT
Supply voltage ranges (see Fig.3)
V
P
V
ext
V
ext(−)
V
O
V
O
I
RDAC
P
tot
T
stg
T
amb
T
j
pin 1 to pin 14 −0,3 13 V
pin 12 to pin 13 −0,3 13 V
pin 14 to pin 13 −0,3 13 V
Output voltage ranges
except RADout 0 V
RADout V
R
current range 50 250 µA
DAC
ext(−)
V
P
ext(+)
V
V
Total power dissipation see Fig.4
Storage temperature range −55 +150 °C
Operating ambient temperature range −30 +85 °C
Operating junction temperature − 150 °C
THERMAL RESISTANCE
From junction to ambient R
th j-a
= 140 K/W
Fig.3 Supply voltages;
(a) Home application (b) Car application. Fig.4 Power derating curve.
November 1987 5
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