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參數資料
| 型號： | 935262794518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網絡 |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, SOT-317, QFP-100 |
| 文件頁數： | 19/24頁 |
| 文件大?。?/td> | 134K |
| 代理商： | 935262794518 |
2000 Feb 21
4
Philips Semiconductors
Product specication
Satellite demodulator and decoder
TDA8044
QUICK REFERENCE DATA
Notes
1. Programmable internal frequencies possible:
a) Values 10.7, 16, 32 or 64 MHz for CFS = 0.
b) Values 16, 24, 48 or 96 MHz for CFS = 1.
2. CFS is set to logic 0.
3. Without switching internal clock frequencies, a range of 1 decade can be covered. To cover the full range of symbol
frequencies, internal clock frequencies and external (SAW) filters must be switched. Details can be found in the
application note.
4. Maximum value is specified for a symbol rate of 45 Msymbols/s, a puncturing rate of 7
8, a clock frequency of 96 MHz
and a 3.55 V power supply. The typical value is specified for a symbol rate of 27.5 Msymbols/s, a puncture rate of 3
4
and a clock frequency of 64 MHz.
5. Implementation loss at the demodulator output and minimum S/N to lock the TDA8044 are measured including tuner
in a laboratory environment at a symbol rate of 27.5 Msymbols/s and a clock frequency of 64 MHz.
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VDDA
analog supply voltage
3.05
3.3
3.55
V
VDDD
digital supply voltage
3.05
3.3
3.55
V
IDD(tot)
total supply current
VDDD = 3.3 V
TDA8044
note 1
320
480
mA
TDA8044A
notes 1 and 2
350
mA
fclk
internal clock frequency
CFS = 0 or CFS = 1;
fxtal = 4 MHz
TDA8044
note 1
10.7
96
MHz
TDA8044A
notes 1 and 2
10.7
64
MHz
rs
symbol rate
note 3
TDA8044
0.5
45
Msymbols/s
TDA8044A
0.5
30
Msymbols/s
Ptot
total power dissipation
Tamb =70 °C; note 4
TDA8044
1150
1700
mW
TDA8044A
1250
mW
IL
implementation loss
note 5
0.3
dB
S/N
signal-to-noise ratio for locking
the TDA8044
note 5
2
dB
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA8044H
QFP100
plastic quad at package; 100 leads (lead length 1.95 mm);
body 14
× 20 × 2.8 mm
SOT317-2
TDA8044AH
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