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Número de pieza TDA8730
Descripción PLL FM demodulator for DBS signals
Fabricantes NXP Semiconductors 
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INTEGRATED CIRCUITS
DATA SHEET
TDA8730
PLL FM demodulator for DBS
signals
Preliminary specification
File under Integrated Circuits, IC02
March 1991

1 page




TDA8730 pdf
Philips Semiconductors
PLL FM demodulator for DBS signals
Preliminary specification
TDA8730
FUNCTIONAL DESCRIPTION
The TDA8730 is a PLL FM
demodulator intended for use in
satellite tuners. It can
demodulate frequency
deviations ranging from
13.5 MHz(p-p) (DBS services) up
to 25 MHz(p-p) (FSS services)
and offers a high demodulation
linearity. The circuit is optimized
for operation at 479.5 MHz (the
European IF for satellite tuners)
and can handle the various
broadcasting standards that are
in use (including MAC).
Due to the PLL principle,
demodulation noise threshold
extension is possible. The high
sensitivity of the balanced IF
input reduces the additional
gain, required in the tuner.
An on chip AGC circuit delivers a
gain control signal for use by the
tuner IF amplifier, and a voltage
regulator makes the circuit
insensitive supply voltage
changes.
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134)
SYMBOL
VDD
IDD
IO(source)
VAGC
tsc
VAGC(adj)
Tstg
Tj
Tamb
PARAMETER
supply voltage
input voltage
output source current
AGC output voltage
max short circuit time of outputs
AGC threshold adjustment voltage
storage temperature
junction temperature
operating ambient temperature
MIN.
0.3
0.3
10
0.3
55
25
MAX.
11
VDD
10
11
VDD
150
150
85
UNIT
V
V
mA
V
s
V
°C
°C
°C
THERMAL RESISTANCE
SYMBOL
Rth j-a
PARAMETER
from-junction-to-ambient in free air
TYP.
55
MAX. UNIT
K/W
March 1991
5

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