TDA8446 データシートの表示（PDF） - Philips Electronics

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TDA8446

Fast RGB/YC switch for digital decoding

Philips Electronics 

Philips Semiconductors

Fast RGB/YC switch for digital decoding

Product specification

TDA8446

CHARACTERISTICS

VCC = 12 V; Tamb = 25 °C; unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

Supply

ICC

SVRR

supply current

supply voltage rejection ratio

note 1

Y and R, G, B channels

ICL

input clamping current

VCC = 6 V; VI = 0 V

II

input current

VI = 9 V

GA

gain of amplifier A

fi = 1 MHz; VSW2 = 2 V

fi = 1 MHz; VSW2 = 0.8 V

GB

gain of amplifier B

fi = 1 MHz

RGB matrixed according to the

following equations:

Y = 0.30R + 0.59G + 0.11B

R−Y = 0.70R − 0.59G − 0.11B

∆Gdiff

|∆G|

RO

∆t

VO

tfsd

tfs

IIFS

B−Y = −0.30R − 0.59G + 0.89B

relative gain difference

note 2

maximum gain variation

output resistance

100 kHz < fi < 8 MHz

time difference at output

DC output level

fast switching delay

fi = 1 MHz; note 3

VCCL = 6 V

see Fig.4

fast switching time

see Fig.4

input current on fast switching

control (pin 13)

VI = 0.4 V

VI = 1 V

Chrominance channel (CIN, COUT)

Ri

internal input resistance

VO

DC output level

GA

gain of amplifier A

|∆G|

maximum gain variation

αoff

isolation (off state)

Zo

output impedance

Ro

output resistance

II = 0

fi = 1 MHz; VSW1 = VSW2 = 2 V

fi = 1 MHz; VSW2 = 0.8 V

100 kHz < fi < 8 MHz

fi = 5 MHz; VSW1 = VSW2 = 0.8 V

VSW1 = VSW2 = 0.8 V

TTL inputs (SW1, SW2, CLI)

IIH

HIGH level input current

VIH = 2 V

IIL

LOW level input current

VIL = 0.8 V

MIN. TYP. MAX. UNIT

−

−

75

mA

30 −

−

dB

0.3 −

−

mA

−1.5 +0.5 +1.5 µA

−1 0

+1

dB

5

6

7

dB

−1 0

+1

dB

−

0

10

%

−

3

−

dB

−

15 −

Ω

−

−

25

ns

−

4.2 −

V

−

20 −

ns

−

10 −

ns

−

0.7 −

µA

−

0.5 −

µA

−

50 −

kΩ

−

5

−

V

−1 0

+1

dB

5

6

7

dB

−

3

−

dB

−

60 −

dB

100 −

−

kΩ

−

7

−

Ω

−

−

10

µA

−

−

−600 µA

1995 Feb 16

7

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