TDA6142-5X ,FM-demodulator for SAT TV with switchable inputFeatures● High input sensitivity results in excellent carrier/noisebehaviour● Reduced noise bandwid ..
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TDA6142-5X
FM-Demodulator for SAT TV with Switch...
SIEMENS
FM-Demodulator for SAT TV with
Switchable Input
Preliminary Data
Features
High input sensitivity results in excellent carrier/noise
behaviour
Reduced noise bandwidth for the prescaler with 480-MHz
LC circuit
Limitation of the prescaler's internal bandwidth to 960 MHz
TDA 6142-5X
Bipolar IC
'e.i.ii:iiiii-e'Ea
' 'i;esgpy
0 Due to the LC circuit improvement stability against
oscillations
o Interferences reduced by damping higher frequencies with P-DSO-20-1
LC circuit
0 Switch for double SAW filter input integrated.
Type Ordering Code Package
TDA 6142-5X Q67000-A5173 P-DSO-20-1 (SMD)
Amplifier and IF demodulator for satellite applications, consisting of: four-stage limiter amplifier with
selection circuit and input selector for two IF-inputs, each with a base stage; divider by 4; video
amplifier; AGC regulator; AFC-output with adjustable steepness; polarity reversal of the video
signal.
Application
Used in indoor units.
Semiconductor Group 1
SlllEMEilgti;
TDA 6142-5X
Pin Configuration
(top view)
Selection Circuit
Selection Circuit
AGC Ouipui
AOC Threshold
Phase Shifting Circuit
Phase Shifting Circuit
AFC Amplifier
AFC Low Pass Filter
AFC Output
P-DSO-20-1
C) 20 CEI AGC Low Pass Filter
19 CEI VS
18 ID F Input 1
17 CEI F Reference Input 1
16 ID F Switch
15 CE] VREF
14 CEI f Input 2
13 ID f Reference Input 2
12 I Video P/N Switching
ll III Video Output
UEP05003
~0mVOfiU14>O~INA
FIFIHFIHHFIFIFIFI
Semiconductor Group
