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DW9255-IG-LC1S PDF预览

DW9255-IG-LC1S

更新时间: 2024-01-30 01:50:10
品牌 Logo 应用领域
DYNEX LTE
页数 文件大小 规格书
5页 96K
描述
SAW Filter, 1 Function(s), 35.42MHz, LEADLESS, CERAMIC, SMALL, 12 PIN

DW9255-IG-LC1S 技术参数

生命周期:Obsolete包装说明:LEADLESS, CERAMIC, SMALL, 12 PIN
Reach Compliance Code:unknown风险等级:5.6
中心频率或截止频率 (fo/fc):35.42 MHz滤波器类型:SAW FILTER
高度:2.25 mm输入阻抗:500 OHM
最大插入损耗:18 dB长度:13.7 mm
安装类型:SURFACE MOUNT功能数量:1
最高工作温度:85 °C最低工作温度:-40 °C
输出阻抗:1000 OHM Ω物理尺寸:L13.7XB6.7XH2.25 (mm)/L0.539XB0.264XH0.089 (inch)
宽度:6.7 mmBase Number Matches:1

DW9255-IG-LC1S 数据手册

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DW9255  
35.42MHz SAW Filter For GPS Receivers  
Replaces October 2001 version, DS3961-4.0  
DS3961-4.1 July 2002  
The DW9255 is a Surface Acoustic Wave (SAW) bandpass  
filter for use with Zarlink Semiconductor's GP2000 Global  
Positioning System (GPS) receiver chip-set. The GP2000 GPS  
chip set from Zarlink Semiconductor comprises the GP2010 and  
GP2015 RF front end ICs along with the GP2021 12-channel  
GPS correlator. It is pre-tuned to the exact 2nd IF filter  
requirements of the Zarlink GP2010 & GP2015 RF front-end  
devices, with a centre-frequency of 35.42MHz. The response is  
tuned for a flat passband, steep stopband and uniform passband  
group-delay with 3 external inductors. The device is realised on a  
Lithium Tantalate substrate and housed in a small leadless  
ceramic Surface Mount package.  
2
1
3
4
5
6
12  
11  
10  
9
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
DW9255  
The DW9255 gives significant improvement in correlated  
GPS Signal-to-Noise Ratio (SNR) performance compared to  
conventional LC bandpass filter schemes. This aids satellite  
signal acquisition and tracking capability from the Zarlink  
GP2000 GPS chip-set. This device effectively filters out-of-band  
(unwanted) noise in the GPS signal. The Automatic Gain Control  
(AGC) within the Zarlink GP2010 and GP2015 RF Front-end  
devices will then operate only on in-band noise for optimum gain  
and superior correlated GPS signal strength.  
7
8
LCS12/1  
Fig.1 Pinout  
RELATED PRODUCTS AND PUBLICATIONS  
FEATURES  
Data  
Reference  
Part  
Description  
I Operates With Zarlink GP2010 and GP2015 RF Front  
End ICs  
GP2010  
GP2015  
GPS receiver RF Front-end  
DS4056  
DS4374  
I Centre Frequency of 35.42MHz  
Miniature GPS receiver  
RF Front-end  
I Insertion Loss of 17dB ±1dB (typical)  
I 1dB Bandwidth 1.9MHz (typical)  
These products are available from Zarlink Semiconductor, please  
visit www.zarlink.com for more information.  
I Passband Ripple 0.8dB (typical)  
I Low Profile Ceramic Surface Mount Package  
I Operating Temperature Range -40° to +85°C  
APPLICATION  
I Commercial Global Positioning  
ORDERING INFORMATION  
Order as: DW9255  
1/5  
www.dynexsemi.com  

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