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TDA2541 Datasheet

  • TDA2541

  • IF AMPLIFIER WITH DEMODULATOR AND AFC

  • 7頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TDA2540
TDA2541
IF AMPLIFIER WITH DEMODULATOR AND AFC
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SUPPLY VOLTAGE : 12V TYP
SUPPLY CURRENT : 50mA TYP
I.F. INPUT VOLTAGE SENSITIVITY AT
F = 38.9MHz : 85碌V
RMS
TYP
VIDEO OUTPUT VOLTAGE (white at 10% of
top synchro) : 2.7V
PP
TYP
I.F. VOLTAGE GAIN CONTROL RANGE :
64dB TYP
SIGNAL TO NOISE RATIO AT V
I
= 10mV :
58dB TYP
A.F.C. OUTPUT VOLTAGE SWING FOR
鈭唂
= 100kHz : 10V TYP
DESCRIPTION
The TDA2540 and 2541 are IF amplifier and A.M.
demodulator circuits for colour and black and white
television receivers using PNP or NPN tuners. They
are intended for reception of negative or positive
modulation CCIR standard.
They incorporate the following functions :
Gain controlled amplifier
Synchronous demodulator
White spot inverter
Video preamplifier with noise protection
Switchable AFC
AGC with noise gating
Tuner AGC output (NPN tuner for 2540)-(PNP
tuner for 2541)
VCR switch for video output inhibition (VCR
play back)
DIP16
(Plastic Package)
ORDER CODE :
TDA2540-TDA2541
PIN CONNECTIONS
IF INPUT
DECOUPLING CAPACITOR
TUNER AGC TAKE-OVER ADJUST
TUNER AGC OUTPUT
AFC OUTPUT
AFC SWITCH
AFC DEMODULATOR L.C. NETWORK
REFERENCE L.C. NETWORK
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IF INPUT
DECOUPLING CAPACITOR
AGC CAPACITOR
GROUND
VIDEO OUTPUT
V
CC
AFC DEMODULATOR L.C. NETWORK
REFERENCE L.C. NETWORK
2540-01.EPS
August 1992
1/7

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