TDA3867 datasheet(8/14 Pages) PHILIPS

Nome de Peças	TDA3867

Descrição Electrónicos	Quasi-split sound processor with two FM demodulators

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Fabricante Electrônico	PHILIPS [NXP Semiconductors]

Página de início	http://www.nxp.com

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8 / 14 page

January 1992

8

Philips Semiconductors

Preliminary speciﬁcation

Quasi-split sound processor with two FM demodulators

TDA3867T

Limiting ampliﬁers (pins 18 and 22)

Vi

minimum input signal (RMS value)

−3 dB AF signal

−

300

450

µV

maximum input signal (RMS value)

200

−−

mV

R18, 22

input resistance

−

560

−Ω

V18, 22

DC voltage

−

0

−

V

Vi

level detector threshold for no muting

(RMS value, pin 22)

only 5.74 MHz channel

−

1

−

mV

∆V

i

hysteresis of level detector

−

5

−

dB

Tracking automatic frequency control (AFC) of the vision carrier reference circuit.

Vo

tracking output voltage range (pin 16)

note 5

VP1−3.3 −

VP1−1V

FTR

tracking reducing factor for

black picture

−

9

−

white test picture

−

4

−

50 % grey picture

−

6

−

S

AFC steepness (open loop) for

black picture

−−8

−

mV/kHz

white test picture

−−3

−

mV/kHz

50 % grey picture

−−5.5

−

mV/kHz

FM1 and FM2 demodulators

Measurements with FM IF input signals of 5.5 MHz and 5.74 MHz with Vi IF (rms) = 10 mV (fmod = 1 kHz, deviation

∆f= ± 50 kHz) on pins 18 and 22 without ceramic ﬁlters, RS =50 Ω.

De-emphasis of 50

µs and V5 =VP (B/G standard). QL−factor = 11 for resonant circuits at pins 7-8 and 11-12.

VIC

intercarrier signals

(RMS values, pins 7-8 and 11-12)

−

100

−

mV

VDC

DC voltage (pins 7, 8, 11 and 12)

−

1.8

−

V

Vo

AF output signals

(RMS values, pins 9 and 10)

0.75

0.95

1.20

V

∆Vo

difference of AF signals

between channels (pins 9 and 10)

pin 6 open-circuit;

note 2

−−

1dB

R9, 10

output resistance

−

100

−Ω

V9, 10

DC voltage

−

2.1

−

V

I9, 10

allowed AC current of emitter output

(peak value)

note 3

−−

±1.5

mA

maximum allowed DC output current

−−

−2mA

THD

total harmonic distortion

−

0.5

1.0

%

Vo

AF output signal (RMS value)

THD = 1.5 %

1.25

−−

V

α

AM

AM suppression

1 kHz, m = 0.3

48

54

−

dB

S/N(W)

weighted signal-to-noise ratio

CCIR 468-3

64

68

−

dB

B

AF bandwidth

−3 dB

0.02

−

100

kHz

αCR

crosstalk attenuation (pins 9-10)

60

70

−

dB

V6

adjusting voltage for AF2 signal (pin 6)

note 4

0

−

5V

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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