TDA9840 데이터 시트보기 (PDF) - Philips Electronics

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TDA9840

TV and VTR stereo/dual sound processor with digital identification and I2C-bus control

Philips Electronics 

Philips Semiconductors

TV and VTR stereo/dual sound processor

with digital identification and I2C-bus control

Product specification

TDA9840

SYMBOL

PARAMETER

CONDITIONS

MIN.

PXTAL

level of drive in operation

−

VOSC(p-p) oscillator operating voltage

500

(peak-to-peak value)

Pilot processing

Vi pil(rms)

Ri pil

m

∆fpil

tpil

fLP

R3

V4(rms)

QL

tacqui AGC

pilot input voltage level at pin 5 unmodulated

(RMS value)

pilot input resistance

modulation depth

AM

pilot PLL pull-in frequency

range (referred to

fpil = 54.6875 kHz)

fω = 9.988 MHz

lower side

upper side

fω = 10.008 MHz

lower side

upper side

fω = 10.028 MHz

lower side

upper side

pilot PLL pull-in time

low-pass frequency response −3 dB

low-pass output resistance

identification threshold voltage

(RMS value)

loaded quality factor of

resonance circuit

high sensitivity

loaded quality factor of

resonance circuit with fixed

coil

sensitivity loss

2 to 3 dB; see Fig.2

AGC acquisition time

Vi pil(rms) switched from

0 to 100 mV RMS

value

5

500

25

−405

192

−296

302

−188

411

0

450

18.75

−

40

−

−

Identification (internal functions)

Vi tuner identification voltage sensitivity note 7

−

(pin 5)

C/N

pilot carrier-to-noise ratio for note 8

−

start of identification

H

hysteresis

note 7

−

TYP.

−

550

−

1000

50

−

−

−

−

−

−

−

600

25

−

−

12

−

28

33

−

MAX.

5

600

100

−

75

−405

192

−296

302

−188

411

1.7

750

31.25

70

50

−

0.1

−

−

2

UNIT

µW

mV

mV

kΩ

%

Hz

Hz

Hz

Hz

Hz

Hz

ms

Hz

kΩ

mV

s

dBµV

dB/Hz

dB

1998 Jul 03

11

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