TDA9143 datasheet(19/40 Pages) PHILIPS

19 / 40 page

1996 Jan 17

Philips Semiconductors

Preliminary speciﬁcation

I2C-bus controlled, alignment-free

PAL/NTSC/SECAM decoder/sync processor

TDA9143

FSCOMB OUTPUT (PIN 23)

Vsub(p-p)

subcarrier output voltage amplitude

(peak-to-peak value)

CL = 15 pF

150

200

300

Vcen

comb enable voltage level

4.0

4.2

5.0

Vcdis

comb disable voltage level

−

0.1

1.4

Isink

sink current to undo forced Y/C mode

of input switch

0.4

−

1.0

RGND

value of grounded resistor to undo

forced Y/C mode of input switch

−

Ω

ACC

ACC control range

−20

−

change of

−(R−Y) and −(B−Y) signals

over range

−−

1dB

colour killer treshold

PAL/NTSC

−34

−31

−28

SECAM

−31

−28

−25

kill/unkill hysteresis

−

Demodulators

−(R−Y) and −(B−Y) outputs (pins 1 and 2)

GENERAL

ratio of

−(B−Y) to −(R−Y)

standard colour bar

1.20

1.27

1.34

temperature coefﬁcient of

−(R−Y) and

−(B−Y) amplitude

−−

0.1

%/K

spread of

−(R−Y) to −(B−Y) ratio

between standards

−1

−

V−(R−Y)

output level of

−(R−Y) output during

blanking level

1.7

2.1

2.5

V−(B−Y)

output level of

−(B−Y) output during

blanking level

1.7

2.0

2.5

bandwidth at

−3 dB

600

670

750

kHz

output impedance

−−

500

Ω

∆V

supply voltage dependence

−−

%/V

hue phase shift (NTSC only)

±35

±45

±55

deg

PAL/NTSC DEMODULATOR

V−(R−Y)(p-p)

−(R−Y) output voltage

(peak-to-peak value)

standard colour bar

480

540

605

V−(B−Y)(p-p)

−(B−Y) output voltage

(peak-to-peak value)

standard colour bar

610

685

765

Vres(p-p)

8.8 MHz residue (peak-to-peak value) both outputs

−−

Vres(p-p)

7.2 MHz residue (peak-to-peak value) both outputs

−−

Vres(p-p)

4.4 and 3.6 MHz residue

both outputs

−−

tbf

S/N

signal-to-noise ratio

0 to 1 MHz

−−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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