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U4454B PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4454B
기능 Quasi-Split-Sound Processing and AM-Demodulator
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U4454B 데이터시트, 핀배열, 회로
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U4454B
Quasi-Split-Sound Processing and AM-Demodulator
Description
The U4454B quasi-split-sound processor is a bipolar
integrated circuit for all FM-TV standards and NICAM
sound systems. For FM/NICAM the IC operates as
QSS-mixer. In case of AM sound the circuit can be used
as AM demodulator.
Features
D PLL intercarrier-mixer for all FM standards
(incl. NICAM sound system)
D High grade signal processing for FM/NICAM
sound systems
D Also suitable as AM-demodulator
D Gain controlled wideband amplifier
D AGC operates as a peak- and mean-level detector
D High input sensitivity
D Wide supply voltage range (6.8 V up to 13 V)
D Low power consumption
D ESD protection
Case: 16-pin DIL plastic
Block Diagram
Loop filter
VCO Tank
12
Lock
detector
16
IF Input
1
Video
11 8
9
VCO
90°
0°
93 7653
6
Output
Interference
rejection
3
NC
2
NC
Overload
detector
5
IF AGC
+/–
4 15 10
AGC
Lock
detector
7 13
Average
Figure 1.
14 +V
S
TELEFUNKEN Semiconductors
Rev. A1, 23-Feb-96
Preliminary Information
1 (7)




U4454B pdf, 반도체, 판매, 대치품
U4454B
Parameters
Test Conditions / Pins Symbol Min. Typ. Max. Unit
ÁÁÁÁÁÁÁÁÁÁÁADOATSRÁÁÁÁÁÁÁÁÁÁÁoiiMCuFgpttanppoolamlÁÁuÁÁÁÁÁÁÁÁÁuuelhtttoaptrproredueuÁÁÁÁÁÁÁÁÁÁÁmjstentei:voocvsoitntoÁÁÁÁÁÁsÁÁÁÁÁailiolentctanacrdggeaÁÁÁÁÁÁÁÁÁÁÁieetsitooÁÁÁÁÁÁÁÁÁÁÁrtionÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁfVmfRmfPf2mmmm2ÁÁiÁÁÁÁÁÁÁÁÁe5noooo==fkdddd=e1H85r====ÁÁ5ÁÁÁÁÁÁÁÁÁ4e04z/n.4111%%P5lc02iokkÁÁeÁÁÁÁÁÁÁÁÁVn.wH:5HH,7zvzzkPpÁÁÁÁÁÁÁÁÁÁÁiHainnsz=s6ÁÁ0ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁVTVRSoH/Do,NAuÁÁÁÁÁÁÁÁÁÁÁDCtF ÁÁÁÁÁÁÁÁÁÁÁseeÁÁÁÁÁÁÁÁÁÁÁn4o2t0ÁÁÁÁÁÁÁÁÁÁÁe 4 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ54626.5820ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ1730500ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁmÁÁÁÁÁÁÁÁÁÁÁVdd%WVRBBMÁÁÁÁÁÁÁÁÁÁÁS ÁÁÁÁÁÁÁÁÁÁÁ
Notes
1. When soldered to PCB
2. With: VCO-capacitor: CVCO = 22 pF;
Loop filter: R1 = 150 W, C1 = 470 nF, C2 = 1.5 nF
3. Picture carrier PC = 38.9 MHz; sound carrier
SC1 = 33.4 MHz, SC2 = 33.16 MHz; PC/SC1 = 13 dB;
PC/SC2 = 20 dB; PC unmodulated (equivalent to
sync peak level
4. Sound carrier SC = 32.4 MHz, modulated with
fmod = 1 kHz, m = 54%, Vin = 10 mV
Alignment of the VCO
1. Apply 4.5 V to Pin 5, to disable the broadband
amplifier.
2. Measure the dc-voltage at Pin 11 (phase detector).
3. Apply a 38.9 MHz unmodulated carrier signal to the
IF input (Pins 1–16); adjust the input level so that the
AGC voltage at Pin 5 is between 2.5 V and 3.3 V.
4. Adjust the VCO circuit until Pin 11 has the same
dc-voltage as measured in step 2.
5. Step 1–4 is a coarse alignment but sufficient for AM-
mode. For sound optimum in FM-mode adjust for the
minimum buzz at critical test pattern (grid pattern) in
the second sound channel.
4 (7) TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 23-Feb-96

4페이지










U4454B 전자부품, 판매, 대치품
U4454B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances ( ODSs).
The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency ( EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
TELEFUNKEN Semiconductors
Rev. A1, 23-Feb-96
Preliminary Information
7 (7)

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부품번호상세설명 및 기능제조사
U4454B

Quasi-Split-Sound Processing and AM-Demodulator

TEMIC Semiconductors
TEMIC Semiconductors

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