参数资料
型号: ZL10037LCG
厂商: ZARLINK SEMICONDUCTOR INC
元件分类: 消费家电
英文描述: Digital Satellite Tuner with RF Bypass
中文描述: SPECIALTY CONSUMER CIRCUIT, QCC28
封装: 5 X 5 MM, MO-220, QFN-28
文件页数: 16/33页
文件大小: 410K
代理商: ZL10037LCG
ZL10037
Data Sheet
16
Zarlink Semiconductor Inc.
Figure 4 shows a typical application using a ZL10313 as a demodulator. This is available as a reference design
(ZLE10542) from Zarlink Semiconductor.
The design uses a standard two layer board. All components are mounted on the upper surface with the lower
surface as a ground plane. The RF input requires a coupling capacitor and series inductor for optimum matching.
The RF bypass output requires a coupling capacitor. Good decoupling should be used - these components should
be mounted as close to the device as practicable.
All ground contact to the ZL10037 is to the ground ‘paddle’ on the underside of the package. This must be soldered
fully to the board to achieve best thermal and electrical contact. It is recommended that an array of vias (4 x 4) is
used to achieve good contact to the ground plane underneath the device
A common crystal reference can be used for the tuner and demodulator. The crystal oscillator capacitors are
optimised for a 10.111 MHz reference.
Sensitivity is optimised by minimizing interaction from digital signal activity in the demodulator. This is achieved by
filtering in the agc control, and filter networks in the baseband I and Q signals between the demodulator and
ZL10037. These networks should be mounted as close to the ZL10037 as possible.
The typical performance from the reference design is shown in the table below:
Further information is provided in ZLE10542 user guides.
Parameter
Typ.
Units
Notes
Sensitivity
-83
dBm
QEF 27.5MS/s rate 7/8
No added noise
Input = -69 dBm
-45 dBm
-23 dBm
Input = -81dBm
-45 dBm
-23 dBm
N+1
N+4
N+10
2 Interferers at -25dBm
C/N 27.5MS/s rate 7/8
2e-4 post Viterbi BER
8.3
8.1
8.1
8.2
8.0
8.0
32
35
45
35
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
C/N 2MS/s rate 7/8
2e-4 post Viterbi BER
Interference Rejection Ratio
27.5 MS/s rate 7/8.
Interferers at -25 dBm
Table 23 - Typical Performance using ZL10037 and ZL10313
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