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參數資料
| 型號： | AMIS-50051 |
| 英文描述： | Digital Demodulator |
| 中文描述： | 數字解調器 |
| 文件頁數： | 1/7頁 |
| 文件大?。?/td> | 188K |
| 代理商： | AMIS-50051 |
AMIS-50051:
Digital Demodulator
Wireless Products
Data Sheet
1.0 Introduction
The AMIS-50051 is a small digital demodulator, specially developed to work with the AMIS-50050 spread spectrum baseband
controller. It simplifies the design of the receiver in a direct sequence spread spectrum wireless communication link.
2.0 Key Features
1Mbit/s demodulation (QPSK)
PN code tracking output to AMIS-50050 (Please refer to the AMIS-50050 spread spectrum baseband controller.)
Fully programmable
CMOS technology
Power-down mode
3.0 Applications
Wireless local area networks
Portable wireless communication
Digital cellular telephones
Wireless ISDN modems
The AMIS-50051 simplifies the design of the receiver in a direct sequence spread spectrum wireless communication link. The AMIS-
50051 uses advanced DSP technology to demodulate the data from a BPSK/DBPSK/QPSK/DQPSK modulated signal. This technique
also provides a PN code tracking signal output, a carrier tracking signal and an automatic gain control (AGC) output signal. The power
of the AMIS-50051 reduces the complexity and component count of a DSSS receiver. The AMIS-50051 is designed to demodulate
QPSK or BPSK data from a carrier whose frequency is11MHz or less. Data rates can be as high as 1Mbit/s for QPSK signals or
500Kbit/s for BPSK signals. An error signal is produced, which can be used to acquire and track the PN code of a direct sequence
spread spectrum system. This output is a voltage, which the AMIS-50050 (please refer to AMIS-50050 spread spectrum baseband
controller) uses to change the phase of the receiver’s PN code. An external despreading device is required to remove the PN code from
the received signal. This reduces the chance of false acquisition over other methods. The AMIS-50051’s internal NCO oscillator is
adjusted by a signal produced from the data demodulation process. This is used to track variations in the carrier frequency of the
received signal.
The AMIS-50051 produces a level error output. This output is pulsed high or low depending on the level of the received signal. This can
be used to form an AGC circuit.
The AMIS-50051 requires few external components. The AMIS-50051 is designed to work directly with the AMIS-50050 to simplify the
design effort of a wireless communication link.
1
AMI Semiconductor
– Sept. 06
www.amis.com
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| AMIS-52050 | 制造商:ON Semiconductor 功能描述:WIRELESS LOW POWER TRANSCEIVER - 433MHZ (300-700MHZ), SSOP - Rail/Tube 制造商:ON Semiconductor 功能描述:WIRELESS LOW POWER TRANSCEIVER - 433MHZ (300-700MHZ), SSOP - Tape and Reel |
| AMIS-52100 | 制造商:AMI 制造商全稱:AMI 功能描述:Transceiver with Clock and Data Recovery |
| AMIS52100/19293001XTD | 制造商:AMI Semiconductor 功能描述: 制造商:NTE Electronics 功能描述: |
| AMIS-52100-A | 制造商:AMI 制造商全稱:AMI 功能描述:Transceiver with Clock and Data Recovery |
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