TDA8808T データシートの表示（PDF） - Philips Electronics

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TDA8808T

Photo diode signal processor for compact disc players

Philips Electronics 

Philips Semiconductors

Photo diode signal processor for compact

disc players

Product specification

TDA8808T

TDA8808AT

SYMBOL

PARAMETER

CONDITIONS

A42

at lD3 = 1 µA; ID4 = 0 µA

S2 mean value of

A31, A32, A41, A42

AC gain for:

G4 = 20 log P1; ID3 = ID4 = 0

G4

at ID1 = 0; ID2(p-p) = 1 µA + 2 µADC note 6

G4

at ID1(p-p) = 1 µA + 2 µADC; ID2 = 0 note 6

G5 = 20 log P2; ID1 = ID2 = 0

G5

at ID3 = 0; ID4(p-p) = 1 µA + 2 µADC note 7

G5

at ID3(p-p) = 1 µA + 2 µADC; ID4 = 0 note 7

Gain control (GCLF)

Input voltage for:

VGCLF

minimum LF gain

VGCLF

maximum LF gain

ZGCLF Input impedance

Threshold total LF current

IDT3

Output current (see Fig.7)

IGCLF

∆VDET<VDETn2 or ∆VDET>VDETp2

IDT < IDT3

MIN.

S2−1

−0,1

−4,5

−4,5

−4,5

−4,5

−

−

−

−

−

IGCLF

IGCLF

VDETn2 < ∆VDET < VDETp2

IDT > IDT3;

note 8

S6−10

−

IRe1

IRe1

IRe2

IRe2

VRe1

VRe2

ZRe1

ZRe2

Iret

VLPF

Re1, Re2 outputs (pin 21, pin 20)

Output current

at ID1 = ID2 = 1 µA; ID3 = ID4 = 0

at ID1 = ID2 = ID3 = ID4 = 0

at lD1 = ID2 = 0; ID3 = ID4 = 1 µA

at lD1 = ID2 = ID3 = ID4 = 0

Output voltage

pin 21

pin 20

Output impedance

pin 21

pin 20

Reference current (Iret)

Iret = IRe1 = IRe2

LPF output (pin 14)

DC voltage level

VGCLF = 3,5 V

note

note 9

110

−

110

−

1

1

−

−

200

VP−2,1

TYP.

S2

0,7

−3

−3

−3

−3

1

2,8

25

1,6

−0,6

IBgc

S6

−0,2

IBgc

128

0

128

0

−

−

1

1

220

VP−1,7

MAX.

S2+1

3

UNIT

−1,5

dB

−1,5

dB

−1,5

dB

−1,5

dB

−

V

−

V

−

MΩ

−

mA

± 10

µA

S6+10 µA

±2

µA

168

mA

−

mA

168

mA

−

mA

VP

V

VP

V

−

MΩ

−

MΩ

240

µA

VP−1,4 V

November 1987

10

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