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PDF U2841B Data sheet ( Hoja de datos )
| Número de pieza | U2841B | |
| Descripción | Monolithic Integrated Circuit | |
| Fabricantes | TEMIC Semiconductors | |
| Logotipo |  |
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Monolithic Integrated Circuit
U2841B
Description
The integrated circuit, U2841B, is designed as a single
FM-IF-amplifier and demodulator for TV sound
processing with SCART switches and AF control in
bipolar technology.
Features
D IF input provided for operating with ceramic filters
D Minimum total harmonic distortion
D Low power consumption
D Operates alternatively with 5 V or 12 V
supply voltage
D Demodulator provided for operating with
ceramic resonator or coil
D SCART AF input / AF output
D Wide volume control range
D ESD protected
Block Diagram
47 pF
47 pF
Tuned
reference circuit
IF input
93 7519
16
456
7
Mute control 2
voltage
3
2.4 V / 3.7 V
V >7V
G=1 S
+VS 15
Vstab1
Vstab2
G=2
VS < 6 V
1 14
13
AF output (controlled)
Volume control
Figure 1.
Deemphasis
4.7 nF
8
11 kW
SCART
9 AF output
11
SCART switch
10
AF input
12 demod. signal
SCART
AF input
TELEFUNKEN Semiconductors
Rev. A1, 17-Jul-96
Preliminary Information
1 (9)
1 page  
Internal Pin Circuit Diagrams
20 kW
2
U2841B
3.4 V
Figure 3. Pin 2: Mute switch
93 7509
4.1 V
3
Figure 4. Pin 3: Internal reference voltage
93 7511
93 7510
4
5
1.8
kW
1.8 kW
Figure 5. Pin 4, 5: Limiter amplifier output
TELEFUNKEN Semiconductors
Rev. A1, 17-Jul-96
Preliminary Information
5 (9)
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet U2841B.PDF ] | |
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