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Número de pieza TDA8808AT
Descripción Photo diode signal processor for compact disc players
Fabricantes NXP Semiconductors 
Logotipo NXP Semiconductors Logotipo



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INTEGRATED CIRCUITS
DATA SHEET
TDA8808T
TDA8808AT
Photo diode signal processor for
compact disc players
Product specification
File under Integrated Circuits, IC01
November 1987

1 page




TDA8808AT pdf
Philips Semiconductors
Photo diode signal processor for compact
disc players
Product specification
TDA8808T
TDA8808AT
Pin functions
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
23, 22
24, 25
26
27
28
MNEMONIC
DESCRIPTION
GCHF
Gain control input of HF amplifier. Current output from HF amplitude detector
VP
HFout
Positive supply voltage
HF amplifier and equalizer voltage output
DET
HF detector voltage input
Sc Starting up capacitor input
Si/RD
On/off control (start input); ready signal output (starting up procedure successful)
Beq Equalizer reference current input
Bgc DC and LF gain control reference current input
FOC START Focus normalizing circuit starting current
PLLH
PLL on hold output
TL Track loss output
DODS
Drop out detector suppression input
Vext TDA8808T
Negative supply connection for FE and FElag output stage; also
substrate connection
TDA8808AT
Positive supply connection for FE and FElag output stage
LPF Low pass filter for Iret, used in track loss (TL) detector and LF gain control
FE Current output of normalized, switched focus error signal
FElag
Current output of switched focus error signal, intended for lag network.
LO Laser amplifier current output
LM Laser monitor diode input
GCLF
Gain control input for AC and LF amplifiers. Current output from LF amplitude detector
Re2 Summation of amplified currents from D3 and D4
Re1 Summation of amplified currents from D1 and D2
D1, D2
Current inputs to DC and LF photo diode amplifier
D3, D4
Current inputs to DC and LF photo diode amplifier
HFin
Current input to HF amplifier
GND
Ground connection of device: also substrate connection for TDA8808AT
DEC
Decoupling input (internal bypass)
November 1987
5

5 Page





TDA8808AT arduino
Philips Semiconductors
Photo diode signal processor for compact
disc players
Product specification
TDA8808T
TDA8808AT
SYMBOL
PARAMETER
ZLPFInput impedance
FOC START input (pin 9)
Start current (ST) for FE
IST (IFOC START = IST)
IST
Start voltage (ST) for FE
VST (VFOC START = VST)
VST
FElag output (pin 16)
Output voltage
VFElag
VFElag
ZFElag
TDA8808T
TDA8808AT
Output impedance
Output current
IFElag=IO
IFElag
ID1 = ID2 = 1D3 = ID4 = 1 µA
ID2 = ID3 = 1 µA;
ID1 = ID4 = 2 µA
IFElag
ID2 = ID3 = 2 µA;
ID1 = ID4 = 1 µA
IFElag
IFElag
VFE
VFE
ZFE
IFE
IFE
IFE
IFE
ID2 = ID3 = 2 µA;
ID1 = ID4 = 1 µA
ID2 = ID3 = 1 µA;
ID1 = ID4 = 2 µA
FE output (pin 15)
Output voltage
TDA8808T
TDA8808AT
Output impedance
Output current
ID1 = ID4 = 2 µA;
ID2 = ID3 = 1 µA
ID1 = ID4 = 1 µA;
ID2 = ID3 = 2 µA
ID1 = ID4 = 2 µA;
ID2 = ID3 = 1 µA
ID1 = ID4 = 1 µA;
ID2 = ID3 = 2 µA
November 1987
CONDITIONS MIN.
TYP.
3
MAX. UNIT
k
Si/RD = HIGH Z 75
Si/RD = LOW
Si/RD = HIGH Z
Si/RD = LOW
see Fig.8
430
20
150
0
530
0
500 µA
− µA
630 mV
20 mV
Vext+l,5
+1,5
Si/RD = HIGH Z;
VGCLF = 3,5 V
VSc = VP
10
8
0
VSc = VP
10%
2S1
+IO
VSc = VP
10%
2S1
+IO
VSc = 1,5 V
5
0
VSc = 1,5 V
see Fig.8
5
0
VP1,5
Vext1,5
V
V
M
+10
+10%
µA
µA
+10% µA
+5 µA
+5 µA
note 10
VSc = 0
VSc = 0
VSc = 1,25 V
VSc = 1,25 V
11
Vext+1,5
+1,5
8
VP1,5
Vext1,5
V
V
M
10%
10%
10%
10%
2S1134IST +10%
4S167IST +10%
2S1134+IST +20%
4S167+IST +20%
µA
µA
µA
µA

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