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參數(shù)資料
| 型號(hào)： | ZL10037 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Digital Satellite Tuner with RF Bypass |
| 中文描述： | 數(shù)字衛(wèi)星調(diào)諧器射頻旁路 |
| 文件頁數(shù)： | 17/33頁 |
| 文件大小： | 410K |
| 代理商： | ZL10037 |
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ZL10037
Data Sheet
17
Zarlink Semiconductor Inc.
The bandwidth of the baseband filter is given by the following expression:
Equation
1
where:
fbw
=
the filter bandwidth in MHz within the range 8 MHz to 43 MHz.
fxtal
=
crystal oscillator frequency in MHz.
BR
=
decimal value of the bits BR[4:0], range 1-31.
(BR = 0 is not allowed)
BF
=
decimal value of the register bits BF[7:0], range 0 - 255.
The above equation can be re-arranged as follows
=
Equation
2
It is recommended that BR should be set so that
is approximately 1 MHz
This sets the bandwidth resolution to approximately 200kHz
The value of BF can now be calculated from Equation 2 and rounded to the nearest integer:
Example
Conditions: fxtal = 10.111 MHz, fbw = 26.5 MHz
Choose BR = 10
BF = 132
The actual filter bandwidth is therefore given by:
(
)
1
+
BF
x
5.088
x
BR
fxtal
fbw
=
1
fxtal
BR
x
5.088
fbw x
BF
BR
fxtal
132.35
=
10.111
10
x
5.088
x
26.5
BF
=
(
)
MHz
43
.
26
5.088
1
x
1
+
132
x
10
10.111
fbw
=
=
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| ZL10037LCF1 | Digital Satellite Tuner with RF Bypass |
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| ZL10038LDG | MULTIMETER, DIGITAL; Accuracy, AC voltage range:+/-1.5% rdg + 3 digits; Accuracy, DC current range:+/-2.5% rdg + 3 digits; Accuracy, DC voltage range:+/-1.2% rdg + 3 digits; Accuracy, resistance range:+/-1.5%rdg + 3 digits; Current RoHS Compliant: NA |
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| ZL10038LDG | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
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