U2860BB TEMIC Semiconductors, U2860BB Datasheet

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U2860BB

Manufacturer Part Number
U2860BB
Description
Dual-Channel FM Sound Demodulator for TV Systems
Manufacturer
TEMIC Semiconductors
Datasheet
TELEFUNKEN Semiconductors
Rev. A1, 17-Jun-96
Dual-Channel FM Sound Demodulator for TV Systems
Description
The U2860B is a dual-channel FM sound demodulator
realized with TEMIC’s advanced bipolar process. All TV
FM standards, from 4.5 up to 6.5 MHz (standard M, B/G,
I, D/K) can be processed with high performance. The
Features
D
D
D
D
Two
automatic lock in on the received sound carrier
frequency
Mono and dual channel application
Sound IF inputs provided for ceramic filters
Automatic mute for 2nd sound channel (squelch)
Mute
V
V
Squelch
alignment-free
in2
in1
94 8139 e
14
V
3
1
4
13
S
Mute
Supply
Squelch
PLL FM demodulators,
12
Preliminary Information
11
C
Squelch (second carrier)
stab
Figure 1. Block diagram
VCO 1
VCO 1
VCO
offset
circuit is alignment-free and has a minimum number of
external components. With 5 V supply voltage, the
U2860B is suitable for TV, VCR and multimedia
applications.
D
D
D
Package: DIP14, SO14
filter 1
filter 2
Loop
Loop
Mute function for both sound channels
5 V supply voltage, low power consumption
Few external components
9
8
10
6
7
U2860B-B
VCO offset
(optional)
V
R
V
AF2
ref
AF1
1 (11)

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U2860BB Summary of contents

Page 1

Dual-Channel FM Sound Demodulator for TV Systems Description The U2860B is a dual-channel FM sound demodulator realized with TEMIC’s advanced bipolar process. All TV FM standards, from 4 6.5 MHz (standard M, B/G, I, D/K) can be processed ...

Page 2

U2860B-B Circuit Description The U2860B includes two identical sound IF channels. Each consists of a limiter amplifier, PLL FM demodulator and AF amplifier. Additionally, this circuit contains a squelch function, mute switch and internal voltage regulation. Limiter Amplifiers The intercarrier ...

Page 3

Pin Description V 1 in1 mute U2860B V 4 sque AF2 7 V AF1 94 8679 Figure 2. Connection diagram Maximum Ratings Reference point Pin 12, unless otherwise specified Parameters Supply voltage ...

Page 4

U2860B-B Operating Range Parameters Supply voltage range Pin 13 Ambient temperature Thermal Resistance Parameters Junction ambient when soldered to PCB Electrical Characteristics = reference point Pin 12, unless otherwise specified amb ...

Page 5

Parameters Test Conditions / Pins FM demodulators, internal VCO’s Steepness of free-running Resistor R frequency adjustment Capture range of PLL’s Holding range of PLL’s Audio outputs, AF1 (Pin 7) and AF2 (Pin 6) DC output voltage DC output current Output ...

Page 6

U2860B-B 94 8140 22 nF SIF SIF 8498 SFE 5. 680 14 SIF W 680 1 SFE 5.5 MC SFE 6 (11) Preliminary Information +5 ...

Page 7

Figure 5. PCB layout (test/application circuit) Figure 6. Component layout (test circuit) TELEFUNKEN Semiconductors Rev. A1, 17-Jun-96 Preliminary Information 95 10708 95 10709 Figure 7. Component layout (application circuit) U2860B-B 95 10710 7 (11) ...

Page 8

U2860B-B 0.5 0.4 0.3 0.2 0 Frequency/ MHz 95 10705 Figure 8. Total harmonic distortion 0 –10 –20 –30 –40 –50 –60 –70 – 100 ...

Page 9

Figure 14. SIF inputs 3 3 8588 Figure 15. Mute switch/squelch switch 6,7 W 100 1 10612 Figure 16. Audio outputs TELEFUNKEN Semiconductors Rev. A1, 17-Jun-96 ...

Page 10

U2860B-B Dimensions in mm Package: DIP14 Package: SO14 10 (11) Preliminary Information 94 9445 94 9301 TELEFUNKEN Semiconductors Rev. A1, 17-Jun-96 ...

Page 11

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 ...

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