- 您现在的位置：买卖IC网 > PDF目录373781 > ZL10037 (Zarlink Semiconductor Inc.) Digital Satellite Tuner with RF Bypass PDF资料下载
参数资料
| 型号： | ZL10037 |
| 厂商： | Zarlink Semiconductor Inc. |
| 英文描述： | Digital Satellite Tuner with RF Bypass |
| 中文描述： | 数字卫星调谐器射频旁路 |
| 文件页数： | 11/33页 |
| 文件大小： | 410K |
| 代理商： | ZL10037 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页当前第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页
ZL10037
Data Sheet
11
Zarlink Semiconductor Inc.
The LEN bit enables the RFBYPASS output. With this bit set, the RF Bypass is active even if ‘software’ or
‘hardware’ power down has been selected.
The RFG bit controls the gain of the second section of RF gain control. With this bit set, the RF gain is reduced by
10dB. This setting would normally used when an external LNA is being used.
2.3 Base Band Registers
There are three registers that control the Base Band:
The bits BF[7:0] control the bandwidth of the baseband filter. An automatic adjustment routine synchronizes the
filter bandwidth to a reference frequency derived from the crystal.
The LF and SF bits disable the baseband filter adjustment. It is recommended that these bits are set after
programming the filter bandwidth to prevent interactions within the circuit. These bits must be reset to enable the
baseband filter bandwidth to be reprogrammed.
The BR[4:0] bits set the crystal reference divide ratio. This effectively determines the resolution setting of the
baseband filters. The baseband filter settings (BF[7:0]) can be calculated from the following equation.
See Section 3 Applications Information, for a typical programming example.
BR[4:0] = 0 is invalid
The BLF bit indicates that the baseband adjustment has completed and locked.
The control bits BG[3:0] define the gain of the Base Band post-filter amplifier. The following table shows the gain -
note this is relative gain. The 1.5 dB gain steps enable the baseband output level to be adjusted and optimise gain
distribution for different symbol rates.
Bit Field
Name
Default
Type
Description
7:0
BF[7:0]
0X3C
R/W
Base Band Filter Cut-Off Frequency
Table 10 - Register 5
Bit Field
Name
Default
Type
Description
7
-
0
R/W
Test Mode
6
LF
0
R/W
Baseband Filter Adjust Disable
5
SF
0
R/W
Baseband Filter Adjust Disable
4:0
BR[4:0]
1000
R/W
Base Band Reference Division Ratio
Table 11 - Register 6
Bit Field
Name
Default
Type
Description
7
BLF
-
R
Base Band Lock Flag
6:3
BG[3:0]
0111
R/W
Base Band Gain Select
2:0
-
000
R/W
Test Modes
Table 12 - Register 7
1
(
=
(MHz)
Frequency
Crystal
0])
:
BR[4
5.088
(MHz)
bandwidth
Filter
0]
:
BF[7
相关PDF资料 |
PDF描述 |
|---|---|
| ZL10037LCF | Digital Satellite Tuner with RF Bypass |
| ZL10037LCF1 | Digital Satellite Tuner with RF Bypass |
| ZL10037LCG | Digital Satellite Tuner with RF Bypass |
| ZL10037LCG1 | Digital Satellite Tuner with RF Bypass |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZL10037LCF | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCF1 | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCG | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCG1 | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10038LDG | 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
发布紧急采购，3分钟左右您将得到回复。