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PDF U2860BB Data sheet ( Hoja de datos )
| Número de pieza | U2860BB | |
| Descripción | Dual-Channel FM Sound Demodulator for TV Systems | |
| Fabricantes | TEMIC Semiconductors | |
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U2860B-B
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
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.
Features
D Two alignment-free PLL FM demodulators,
automatic lock in on the received sound carrier
frequency
D Mono and dual channel application
D Sound IF inputs provided for ceramic filters
D Automatic mute for 2nd sound channel (squelch)
D Mute function for both sound channels
D 5 V supply voltage, low power consumption
D Few external components
Package: DIP14, SO14
VS
Cstab
13 12 11
Supply
Vin1 1
VCO 1
Loop
filter 1
8
7 VAF1
Mute 3
Mute
VCO
offset
Vin2 14
VCO 1
Loop
filter 2
Squelch 4
Squelch
Squelch (second carrier)
94 8139 e
10 VCO offset
Rref
(optional)
6 VAF2
9
Figure 1. Block diagram
TELEFUNKEN Semiconductors
Rev. A1, 17-Jun-96
Preliminary Information
1 (11)
1 page  
U2860B-B
Parameters
Test Conditions / Pins
Symbol Min. Typ. Max.
FM demodulators, internal VCO’s
Pin 10
Steepness of free-running Resistor Rref at Pin 10
frequency adjustment
S
200
Capture range of PLL’s
Holding range of PLL’s
Audio outputs, AF1 (Pin 7) and AF2 (Pin 6)
∆fcap
∆fhold
±1.4
±2.0
±1.9
±3.0
DC output voltage
DC output current
Output resistance
AC output peak current
AF output voltage,
RMS value
Difference between the
output signals
See note 1
vin = 10 mV,
f = 5.5 MHz,
FM-dev. = 27 kHz,
fmod = 1 kHz
VDC
IDC
Rout
iAC
vAF
∆vAF
2.2
1.0 –1.3
150
±1.0
500
±1
Total harmonic distortion
vin = 10 mV,
f = 5.5 MHz,
THD
0.1 0.5
AM suppression
Crosstalk attenuation
between the AF outputs
FM-dev. = 27 kHz,
fmod = 1 kHz
vin = 10 mV,
f = 5.5 MHz,
fmod = 1 kHz,
reference signal:
FM-dev. = 50 kHz
test signal: m = 30%
f = 50 Hz to 12.5 kHz
aAM 46
66
aatt 70
Supply voltage ripple
rejection
VRR < 200 mV, f = 70 Hz
RR
24
Mute switch
Pin 3
Control voltage - muteoff AF outputs active
- mute on AF outputs not active
Vmute
2.0
0
VS
0.8
Control current
Squelch function
Pin 4
Imute
150
Control voltage for
automatic mute-2nd carrier
“off”
automatic mute-2nd carrier
“on”
Control current
Vsque
0
0.8
2.0 VS
Isque
150
Notes
1.) This parameter is given as an application information and not measured during final testing.
Unit
kHz/kW
MHz
MHz
V
mA
W
mA
mV
dB
%
dB
dB
dB
V
V
mA
V
V
mA
TELEFUNKEN Semiconductors
Rev. A1, 17-Jun-96
Preliminary Information
5 (11)
5 Page 
U2860B-B
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, 17-Jun-96
Preliminary Information
11 (11)
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet U2860BB.PDF ] | |
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