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| TDA8808T Datasheet, PDF (18/22 Pages) NXP Semiconductors – Photo diode signal processor for compact disc players | |||
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Philips Semiconductors
Photo diode signal processor for compact
disc players
Product speciï¬cation
TDA8808T
TDA8808AT
IST
Icont
Icont
IDT
IDT3
S1
(1 + 4)NN
(2 + 3)NN
(1 + 4) N
(2 + 3) N
= âIFOC START
= 2 IBgc if IDT > IDT3
= IDT Ã S1 if IDT < IDT3
= ID1 + ID2 + ID3 + ID4
= 2 IBgc/S1
= average maximum LF gain
= not normalized currents = (ID1 + ID4) S1
= not normalized currents = (ID2 + I D3) S1
= normalized
currents=


ï£
-I-D----1--I-D-+---1--I--D---2-
+
-I-D----3--I-D-+---4--I--D---4-



Ã
Icont
= normalized
currents=


ï£
-I-D----1--I-D-+---2--I--D---2-
+
-I-D----3--I-D-+---3--I--D---4-



Ã
Icont
Vj is the junction voltage (0,7 V typ.).
Fig.8 FElag current output as a function of starting voltage input (VSc).
November 1987
18
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