AMIS-50051 small digital demodulator, specially developed work with AM

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AMIS-50051 small digital demodulator, specially developed work with AM

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AMIS-50051: Digital Demodulator
AMIS-50051 small digital demodulator, specially developed work with AMIS-50050 spread spectrum baseband controller. simplifies design receiver direct sequence spread spectrum wireless communication link.
Features
1Mbit/s demodulation (QPSK) code tracking output AMIS-50050 (Please refer AMIS-50050 spread spectrum baseband controller.) Fully programmable CMOS technology Power-down mode
Applications
Wireless local area networks Portable wireless communication Digital cellular telephones Wireless ISDN modems
AMIS-50051 simplifies design receiver direct sequence spread spectrum wireless communication link. AMIS50051 uses advanced technology demodulate data from BPSK/DBPSK/QPSK/DQPSK modulated signal. This technique also provides code tracking signal output, carrier tracking signal automatic gain control (AGC) output signal. power AMIS-50051 reduces complexity component count DSSS receiver. AMIS-50051 designed demodulate QPSK BPSK data from carrier whose frequency is11MHz less. Data rates high 1Mbit/s QPSK signals 500Kbit/s BPSK signals. error signal produced, which used acquire track code direct sequence spread spectrum system. This output voltage, which AMIS-50050 (please refer AMIS-50050 spread spectrum baseband controller) uses change phase receiver's code. external despreading device required remove code from received signal. This reduces chance false acquisition over other methods. AMIS-50051's internal oscillator adjusted signal produced from data demodulation process. This used track variations carrier frequency received signal. AMIS-50051 produces level error output. This output pulsed high depending level received signal. This used form circuit. AMIS-50051 requires external components. AMIS-50051 designed work directly with AMIS-50050 simplify design effort wireless communication link.
Semiconductor Sept. www.amis.com
AMIS-50051: Digital Demodulator
AMIS-50051 Block Diagram
Figure Block Diagram AMIS-50051
Semiconductor Sept. www.amis.com
AMIS-50051: Digital Demodulator
Package Availability
SOIC TQFP
Figure Package Availability
Table Descriptions Name DVDD DVSS SDATA SCLK RSSI2 RSSI1 RXD0 RXD1 TRACKON DUMP CRYST1 CRYST0 EXT_IN RX_IN ENABLE AVDD AVSS Number SOIC 1,12 2,11 13,23 14,22 Number TQFP Functional Description Digital power Digital ground Data serial programming interface Clock serial programming interface, sensitive rising edge RSSI AMIS-50050 RSSI AMIS-50050 Received data Received data Indicates that AMIS-50050 tracking incoming signal, active high Activate dump control logic input phase detector output, internal output Crystal oscillator external reference input Crystal oscillator Used digital input from external window comparator, test input normal Active reset Automatic gain control signal input, also used digital input from external window comparator Active enable serial programming interface Analog power Analog ground Type Power Ground Input Output Output Output Output Output Input Input Analog Crystal OSC/Input Crystal Input Input Output Analog/Input Input Power Ground connected
Semiconductor Sept. www.amis.com
AMIS-50051: Digital Demodulator
Electrical Specifications
Absolute Maximum Ratings
Table Absolute Maximum Ratings Parameter VDD/AVDD Input voltage, pins Input current, pins Storage temperature Lead temperature
Min. -0.3 -0.3
Max. VDD+0.3
Units
seconds
Note: Stresses beyond those listed under "Absolute Maximum Ratings" cause damage device. This stress rating only functional operation device these, other conditions beyond those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
Operational Characteristics
Table Operational Characteristics Symbol Parameter RXiv RXii Fref Rsol Srte
Notes:
Min.
Typ.
Max.
Units mVpp
Supply voltage Supply current (5V) Supply current (3V) frequency frequency Input voltage Input impedance
1.56
Reference frequency RSSI output level Internal sample rate
Using internal converter Using external converter Impedance only RXin
Semiconductor Sept. www.amis.com
AMIS-50051: Digital Demodulator
Supply Current Operation
Figure Supply Current Operation
Note: frequency frequency internal clock, Fvco.
Supply Current Operation
Figure Supply Current Operation
Note: frequency frequency internal clock, Fvco.
Semiconductor Sept. www.amis.com
AMIS-50051: Digital Demodulator
AMIS-50051 Programming Interface AMIS-50051 uses 3-wire interface, enable/clock data. enable active low.
Figure Active Enable Mode Timing
Table Active Enable Timing Specifications Parameter Typical Slow Mode Typical Fast Mode tPULSE tLEH 0.500 0.125 0.125 0.250 0.250
Units µsec µsec µsec µsec µsec
Note: AMIS-50051 uses three wire serial interface programming. protocol used "Active Enable" mode with slow clock enable active low.
Typical AMIS-50050 AMIS-50051 Code recommended program AMIS-50051 AMIS-50050. AMIS applications notes support customer programming available.
Semiconductor Sept. www.amis.com
AMIS-50051: Digital Demodulator
AMIS-50051 Ordering Codes
Table Ordering Codes Device Number 11564-502-XTP -XTD) 11564-503-XTP -XTD) 11564-504-XTP -XTD)
Package Lead SOIC Lead LQFP Lead LQFP (green/RoHS)
Note: tape reel. tube/tray
Company Product Inquiries
more information about Semiconductor, technology product, visit site http://www.amis.com. North America Tel: +1.208.233.4690 Fax: +1.208.234.6795 Europe Tel: 55.33.22.11 Fax: 55.31.81.12
Devices sold AMIS covered warranty patent indemnification provisions appearing Terms Sale only. AMIS makes warranty, express, statutory, implied description, regarding information forth herein regarding freedom described devices from patent infringement. AMIS makes warranty merchantability fitness purposes. AMIS reserves right discontinue production change specifications prices time without notice. Semiconductor's products intended commercial applications. Applications requiring extended temperature range, unusual environmental requirements, high reliability applications, such military, medical life-support life-sustaining equipment, specifically recommended without additional processing AMIS such applications. Copyright ©2006 Semiconductor, Inc.
Semiconductor Sept. www.amis.com

AMIS-50051 small digital demodulator, specially developed work with AM

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