TDA4651 datasheet(7/15 Pages) PHILIPS

部件名	TDA4651

功能描述	Multistandard colour decoder with negative colour difference output signals

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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7 / 15 page

August 1993

7

Philips Semiconductors

Preliminary speciﬁcation

Multistandard colour decoder with negative

colour difference output signals

TDA4651

CHARACTERISTICS

All voltages are measured to GND (pin 11); VP = 12 V; chrominance input signal V15(p−p) = 200 mV (with 75% colour bar

signal); Tamb = +25 °C; measured in test circuit of Fig.1; unless otherwise speciﬁed

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

VP

positive supply voltage

10.8

12

13.2

V

IP

supply current

50

60

80

mA

Chrominance part

Vi(p−p)

input signal range (pin 15)

(peak-to-peak value)

see note 1

20

200

400

mV

RI

input resistance (pin 15)

8.5

10

11.5

k

Ω

CI

input capacitance (pin 15)

−

45

pF

Demodulator part (PAL/NTSC)

V1(p−p)

colour difference

−(R−Y) output signal

(peak-to-peak value)

see note 2

PAL

442

525

624

mV

NTSC

370

440

523

mV

V3(p−p)

colour difference

−(B−Y) output signal

(peak-to-peak value)

see note 2

PAL

559

665

791

mV

NTSC

468

557

662

mV

V1/V3

spread of ratio of colour difference

signals (R-Y)/(B-Y)

at nominal phase of

hue control

−−

±5%

V1/V1

spread of signal ratio PAL/NTSC

at nominal phase of

hue control

−−

±1dB

m

signal linearity

V1(p−p) = 0.8 V −(R−Y)

0.8

−−

V3(p−p) = 1.0 V −(B−Y)

0.8

−−

V1,3

DC output level

proportional to VP

6.3

6.8

7.3

V

H/2 ripple at CD outputs

without colour bars

−−

10

mV

V1, 3(p−p)

residual carrier at CD outputs

(peak-to-peak value)

4.43 MHz

−−

10

mV

8.87 MHz

−−

30

mV

Z1,3

output impedance

−−

200

Ω

Demodulator part (SECAM) (see note 3)

V1(p−p)

colour difference

−(R−Y) output signal

(peak-to-peak value)

every second line

blanked

0.88

1.05

1.25

V

V3(p−p)

colour difference

−(B−Y) output signal

(peak-to-peak value)

every second line

blanked

1.12

1.33

1.58

V

V1, 3

DC output level

proportional to VP

6.3

6.8

7.3

V

H/2 ripple at CD outputs

without colour bars;

every second line

blanked

−−

10

mV

V1,3(p-p)

residual carrier at CD outputs

(peak-to-peak value)

4.43 MHz

−−

30

mV

8.87 MHz

−−

30

mV

∆V1,3/∆V

P

shift of demodulated fo levels relative to

blanking level

with supply voltage

−−

3

mV/V

∆V

1/∆T

with temperature

−

0.16

−

mV/K

∆V

3/∆T

−−0.25

−

mV/K

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