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參數(shù)資料
| 型號： | TDA8730 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | PLL FM demodulator for DBS signals |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-16 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大小： | 62K |
| 代理商： | TDA8730 |
March 1991
5
Philips Semiconductors
Preliminary specification
PLL FM demodulator for DBS signals
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)
THERMAL RESISTANCE
SYMBOL
PARAMETER
MIN.
0.3
0.3
10
0.3
55
25
MAX.
UNIT
V
DD
I
DD
I
O(source)
V
AGC
t
sc
V
AGC(adj)
T
stg
T
j
T
amb
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
11
V
DD
10
11
V
DD
150
150
85
V
V
mA
V
s
V
°
C
°
C
°
C
SYMBOL
PARAMETER
TYP.
MAX.
UNIT
R
th j-a
from-junction-to-ambient in free air
55
K/W
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