TDA8808AT datasheet(13/22 Pages) PHILIPS

13 / 22 page

November 1987

Philips Semiconductors

Product speciﬁcation

Photo diode signal processor for compact

disc players

TDA8808T

TDA8808AT

Threshold total LF current

IDT2

−

3,9

−µA

Output voltage

DODS = HIGH

(

≥ 2,4 V)

∆VDET < VDETn2 or

VTL

∆VDET > VDETp2

IDT don’t care

2,4

−−

VTL

VDETn1 < ∆VDET < VDETp1

IDT don’t care

2,4

−−

VDETn2 < VDET < VDETn1 or

VTL

VDETp1 < ∆VDET < VDETp2

IDT < IDT2

2,4

−−

VDETn2 < VDET < VDETn1 or

VTL

VDETp1 < VDET < VDETp2

IDT > IDT2

−

0,15

0,4

Output voltage

DODS = LOW

(

≤ 0,8 V)

∆VDET < VDETn2 or

VTL

∆VDET > VDETp2

IDT don’t care

2,4

−−

VTL

VDETn2 < ∆VDET < VDETp2

IDT < IDT2

2,4

−−

VTL

VDETn2 < ∆VDET < VDETp2

IDT > IDT2

−

0,15

0,4

ITL

Output sink current

VTL = LOW

2,2

−

ITL

Output source current

VTL = HIGH

−−100

−50

µA

τ1

Delay times (see Fig.10)

8,5

µs

τ2

see Fig.6

τ1−15%

or 6,5

−τ1+ 5%

or 10

µs

τ3

8,5

µs

τ4

τ3−10%

or 7

−τ3+10%

or 10

µs

LO output (pin 17)

VLO

Output voltage

−−

VP - 0,5

Z

LO

Output impedance

−

Ω

ILO

Output leakage current

Si/RD = LOW

−10

−0,1

µA

ILO

Maximum output current

Si/RD = HIGH Z

−8

−4

−2mA

LM input (pin 18)

VLM

Input voltage

closed loop

185

205

225

ILM

Input bias current

−2

−−

µA

Laser supply

Transconductance

GLDC

For DC (note 11)

Si/RD = HIGH Z

−

0,5

−

A/V

GLDC

Si/RD = LOW

−

A/V

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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