U4454B TEMIC Semiconductors, U4454B Datasheet

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U4454B

Manufacturer Part Number
U4454B
Description
Quasi-Split-Sound Processing and AM-Demodulator
Manufacturer
TEMIC Semiconductors
Datasheet

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U4454B
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U4454B
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TELEFUNKEN Semiconductors
Rev. A1, 23-Feb-96
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
Features
D PLL intercarrier-mixer for all FM standards
D High grade signal processing for FM/NICAM
D Also suitable as AM-demodulator
D Gain controlled wideband amplifier
D AGC operates as a peak- and mean-level detector
Block Diagram
IF Input
NC
(incl. NICAM sound system)
sound systems
16
1
3
Loop filter
detector
12
Lock
2
NC
Video
www.DataSheet4U.com
IF AGC
11
Preliminary Information
Overload
detector
5
8
VCO
90
0
4
+/–
Figure 1.
VCO Tank
9
15
QSS-mixer. In case of AM sound the circuit can be used
as AM demodulator.
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
10
AGC
detector
Lock
7
Average
Interference
rejection
13
U4454B
93 7653
14
6
+V
S
Output
1 (7)

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U4454B Summary of contents

Page 1

... 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 Features D PLL intercarrier-mixer for all FM standards (incl. NICAM sound system) D High grade signal processing for FM/NICAM ...

Page 2

... U4454B Pin Description GND out VCO 95 11256 Absolute Maximum Ratings Reference point Pin 4, unless otherwise specified Parameters Supply voltage Pin 14 Supply current Pin 14 Output current Pin 6 Maximum power dissipation Junction temperature Thermal Resistance Parameters Junction ambient note 1 Ambient temperature Storage temperature ...

Page 3

... Pins 8–9, 11 and 12 see note cap D f vco 3.0 Pin 6 see note out V 80 out V 35 out =10 mV kHz, S/N S/N S/N S/N S/N S/N U4454B Typ. Max. Unit 8.0 13 120 V RMS 0.33 1.0 F 1.5 MHz 3.0 MHz 4.5 kHz/mV 4 ...

Page 4

... U4454B Parameters Test Conditions / Pins AM mode: DC output voltage Output resistance AF output voltage Total harmonic distortion mod kHz mod f = 12.5 kHz mod Signal to noise ratio Reference 54 kHz mod 22 kHz low pass Ripple rejection Pin 15/Pin 7 Notes 1. When soldered to PCB 2. With: VCO-capacitor ...

Page 5

... Typical Application Circuit TSB 5304 32.4 MHz TSB 5307 93 7654 TELEFUNKEN Semiconductors Rev. A1, 23-Feb-96 Preliminary Information 150 470 U4454B 4 680 SFE 5. 4 U2831B 3 5.74 MHz AF2 U4454B 32.4 MHz 38.9 MHz 1 38.9 MHz (32.4 MHz 2 (AM) 3 680 SFE 5 3 5.5 MHz AF1 + (7) ...

Page 6

... U4454B Dimensions in mm Package: DIP16 6 (7) Preliminary Information 94 9128 TELEFUNKEN Semiconductors Rev. A1, 23-Feb-96 ...

Page 7

... 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 TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2831, Fax number 7131 67 2423 TELEFUNKEN Semiconductors Rev. A1, 23-Feb-96 Preliminary Information unauthorized use. U4454B 7 (7) ...

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