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| 型号： | SSTAR-01 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 通信及网络 |
| 英文描述： | SPECIALTY TELECOM CIRCUIT |
| 文件页数： | 3/3页 |
| 文件大小： | 40K |
| 代理商： | SSTAR-01 |
Feature Sheet
3
Advanced
868MHz Direct Sequence Spread
Spectrum Single Chip Transceiver
SSTAR-01
WavePlex Wireless Products
Receiver
The architectural concept for the receiver is an analog, single down conversion structure with very low
IF and a high side LO.
The digital part incorporates a high level of innovative signal processing.
A digital state machine is triggered by an external microcontroller. After a short settling time for the
AGC loop, ADC samples are acquired and processed to determine the notch filter frequency. After the
notch filter has settled, samples are acquired for the signal search algorithm. When signal frequency
and code timing offset have been determined through correlation processing, and the correlation level
exceeds a predefined threshold, the receive mode is entered. Receiver processing algorithms provide
data bit clock tracking and data recovery. The recovered data stream present after a signal preamble
interval is provided at the receiver output. If the correlation level does not exceed a predefined
threshold, the state machine falls back into idle mode. A result of this processing technology is higher
interference rejection and thus an increase the reliability of the RF link.
For more information please contact:
Stefan Schubert
AMI GmbH
Bertolt-Brecht-Allee 22
01309 Dresden
Tel.: +49 351 31 530 340
Email: schubert@amis.de
American Microsystems, Inc. reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
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