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參數(shù)資料
| 型號： | TDA8745H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Satellite sound receiver with I2C-bus control |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 文件頁數(shù)： | 14/40頁 |
| 文件大?。?/td> | 261K |
| 代理商： | TDA8745H |
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1996 Mar 11
14
Philips Semiconductors
Preliminary specification
Satellite sound receiver with I
2
C-bus control
TDA8745
Table 9
TUN9 to TUN0; tuning
Note
1.
This is the situation after POR.
The frequency range of synthesizer is shown in Table 10.
Table 10
Frequency range of synthesizer
Notes
1.
2.
Tuning the synthesizer below 29.04 MHz may be possible, but is not guaranteed.
The mixing frequency (f
mix
) can be calculated with equation:
f
mix
= (1024 + 512[TUN9] + 256[TUN8] + 128[TUN7] + 64[TUN6] + 32[TUN5] + 16[TUN4] + 8[TUN3] + 4[TUN2] +
2[TUN1] + [TUN0])
×
10 kHz.
Tuning frequency = mixer input frequency
10.7 MHz.
3.
TUN9
i1
TUN8
i0
TUN7
t7
TUN6
t6
TUN5
t5
TUN4
t4
TUN3
t3
TUN2
t2
TUN1
t1
TUN0
t0
10.7 IF
(MHz)
10.52 IF
(MHz)
0
0
0
1
1
1
1
1
1
0
0
0
0110101111 to 1001010011
1
0
1001010101 to 1010000101
0
0
1010000111 to 1010110111
0
1
1010111001 to 1011101011
1
1
1011101101 to 1100001111
0
0
1100010001 to 1100110011
0
1
1100110101 to 1111111100
1
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
1
1
0
0
1
0
1
0
3.82
3.83
3.84
4.00
4.01
4.02
3.85 to 5.49
5.50
5.51 to 5.99
6.00
6.01 to 6.49
6.50
6.51 to 7.01
7.02
(1)
7.03 to 7.37
7.38
7.39 to 7.73
7.74
7.75 to 9.74
9.75
9.76
9.77
4.03 to 5.67
5.68
5.69 to 6.17
6.18
6.19 to 6.67
6.68
6.69 to 7.19
7.20
(1)
7.21 to 7.55
7.56
7.57 to 7.91
7.92
7.93 to 9.92
9.93
9.94
9.95
1
0
0
1
0
1
0
0
1
0
1
0
0
1
1
0
1
0
1
1
1
0
0
0
1
0
1
0
1
1
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
PARAMETER
RANGE
(MHz)
Synthesizer frequency range
Mixer input frequency range
Tuning range
29.04 to 40.94 (in 20 kHz grid); note 1
14.52 to 20.47 (in 10 kHz grid); note 2
3.82 to 9.77 (in 10 kHz grid; 10.7 MHz IF); note 3
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