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| 型号： | W3041BCL |
| 元件分类： | 通信及网络 |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PDSO20 |
| 封装： | TSSOP-20 |
| 文件页数： | 1/12页 |
| 文件大小： | 822K |
| 代理商： | W3041BCL |
W3041
IF Receiver with Integrated IF2 Bandpass Filters
Preliminary Data Sheet
December 1998
Features
+ Root Nyquist approximation 400 kHz or
450 kHz bandpass filters specified for PDC
25 kHz channel and baseband
+ Small, 20-pin TSSOP package
+ Low supply current for long battery life
+ Wide-range RSSI
+ High-gain limiter
+ Low-noise, image-reject IF mixer
+ Minimum external components
Applications
+ PDC 800 MHz and PDC 1500 MHz (Japan
RCR STD-27) portable receivers
Description
The W3041 is intended for application in cellular
telephone receivers made for the Japan Personal
Digital Cellular (TDMA PDC) phones. It provides
the following functionality:
+ IF1 mixer for translating a first IF (IF1) of
120 MHz to 200 MHz to a second IF (IF2) of
400 kHz or 450 kHz
+ Integrated active IF2 bandpass filters providing
selectivity, phase linearity, and dynamic range
sufficient to replace conventional ceramic
filters, with center frequency of 400 kHz or 450
kHz (switchable)
+ Limiting RSSI amplifier strip for the IF2 filter
output
+ A local oscillator input buffer with on-chip
coupling capacitors
IF2
400 kHz or 450 kHz
RSSI
IF1 IN
IF2 OUT
BIAS & CONTROL
ENBL
FSEL
CLK
Figure 1. Circuit Block Diagram
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