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參數(shù)資料
| 型號(hào)： | WB1336TX-TR |
| 英文描述： | Serial-Input Frequency Synthesizer |
| 中文描述： | 串行輸入頻率合成器 |
| 文件頁數(shù)： | 10/10頁 |
| 文件大小： | 160K |
| 代理商： | WB1336TX-TR |
WB1330
9
Document #: 38-00826-B
Table 4. 7-Bit Swallow Counter (A) Truth Table[10]
Divide Ratio A
A7A6A5A4A3A2A1
PLL1 (High Frequency)
0
X
000
1
X
000
001
:::
62
X
111
110
63
X
111
PLL2 (Low Frequency)
0
XXX
0
1
XXX
0
1
:::
14
XXX
1
0
15
XXX
1
Table 5. 11-Bit Programmable Counter (B) Truth Table[11]
Divide Ratio B
B11
B10
B9B8B7B6B5B4B3B2B1
3
0000000
0011
4
0000000
0100
:::
2046
1
1111
1110
2047
1
1111
Table 6. 15-Bit Programmable Reference Counter (for PLL1 and PLL2) Truth Table[11]
Divide Ratio R
R15
R14
R13
R12
R11
R10
R9R8R7R6R5R4R3R2R1
3
000000000000011
4
000000000000100
:::
32766
111111111111110
32767
111111111111111
Ordering Information[12]
Ordering Code
Package
Name
Package Type
TR
WB1330
X
20-pin TSSOP (0.173” wide)
Tape and Reel Option
Notes:
10. B is greater than or equal to A.
11. Divide ratio less than 3 is prohibited. The divide ratio can be calculated using the following equation:
12. Operating temperature range: –40°C to +85°C.
fvco = {(P * B) + A} * fosc / R where (A < B)
fvco: Output frequency of the external VCO.
The divide ratio N = (P * B) + A.
R: Preset ratio of the 15-bit programmable reference counter (3 to 32767).
fosc: The crystal reference oscillator frequency.
A: Preset divide ratio of the 7-bit swallow counter (0 to 63) and the 4-bit swallow counter (0 to 15).
B: Preset ratio of the 11-bit programmable counter (3 to 2047).
P: Preset divide ratio of the dual modulus prescaler.
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