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參數(shù)資料
| 型號(hào)： | TDA8732 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | NICAM-728 demodulator NIDEM |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, EIAJ, SC-603, SOT-146-1, DIP-20 |
| 文件頁(yè)數(shù)： | 2/14頁(yè) |
| 文件大?。?/td> | 96K |
| 代理商： | TDA8732 |
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April 1993
2
Philips Semiconductors
Product specification
NICAM-728 demodulator (NIDEM)
TDA8732
FEATURES
5 V supplies for analog and digital circuitry
Low cost application
Improved noise behaviour
Limiting amplifier for QPSK input
Suitable with PAL B, G and I NICAM-728 systems.
APPLICATIONS
NICAM-728 systems.
GENERAL DESCRIPTION
The NIDEM is a dedicated device providing a DQPSK
(Differential Quadrature Phase Shift Keying) demodulator
for a NICAM-728 system.
The device interfaces with NICAM-728 decoders and
provides data synchronized to a 728 kHz clock (either
supplied externally or by the on-board clock).
The device consists of a costas loop quadrature
demodulator, a bit-rate clock recovery and differential
decoder with parallel-to-serial conversion.
The Voltage Controlled Oscillator (VCO) used in the
costas loop is achieved with a single-pin crystal oscillator.
A second single-pin crystal oscillator with a divider chain
provides signals at 5.824 MHz and at 728 kHz.
The NIDEM is suitable for PAL B and G (carrier oscillator
crystal at 11.7 MHz) and PAL I (carrier oscillator crystal at
13.104 MHz).
QUICK REFERENCE DATA
Measured over full voltage and temperature ranges.
ORDERING INFORMATION
Note
1.
SOT146-1; 1996 December 3.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
V
CCA
V
CCD
V
CCA
V
CCA
V
CCD
I
CCA
I
CCD
V
3
R
I
C
I
f
CAROSC
f
XTAL
analog supply voltage
digital supply voltage
analog supply voltage
differential supply voltage
analog supply current
digital supply current
QPSK input level (peak-to-peak value)
input resistance
input capacitance
carrier oscillator frequency
crystal frequency
PAL B, G
PAL I
clock oscillator frequency
4.5
4.5
4.5
0.5
30
1.75
11.5
5
5
5
12.5
14.5
100
2.5
2
5.5
5.5
5.5
0.5
300
3.25
13.5
V
V
V
V
mA
mA
mV
k
pF
MHz
11.7
13.104
11.648
MHz
MHz
MHz
f
CLKOSC
f
C5M
C5M output frequency
5.824
MHz
EXTENDED
TYPE
NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA8732
20
DIL
plastic
SOT146
(1)
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