DS Spread-Spectrum Demodulator 22 Mchips/s

KEY FEATURES

Note: The newer COM-1518 now provides higher performance (60 MSymbols/s, parallel acquisition)

Digital demodulator with flexible configuration:

Variable chip rate up to 22 Mchips/s
Speading factor 3 to 2047
BPSK, QPSK selectable
Center frequency: +/- 10 MHz

Spreading codes:

Gold sequences
Maximal length sequences
Barker codes (length 11, 13)
GPS C/A codes
Truncated codes

Demodulator data outputs: 4-bit soft-quantized to

Synchronous serial interface, or
USB 1.1/2.0

Demodulation performances: within 1.5 dB from theory at threshold SNR of 5 dB

Sequential code search

ComScope-enabled: key internal signals can be captured in real-time and displayed on the host computer

Connectorized 3"x 3" module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right, bottom). Single 5V supply with reverse voltage and overvoltage protection. Interfaces with 3.3V LVTTL logic

ComBlock COMPATIBILITY LIST

Input	Output
COM-3008 Baseband receiver	COM-1005 Bit error rate measurement
COM-3007 2.3 - 2.8 GHz receiver	COM-7002 Turbo code error-correction decoder
COM-1519 Spread-spectrum digital modulator	COM-1509 Convolutional error-correction decoder
COM-1824 Channel emulator (Doppler, delay, fading, noise)	COM-5003 TCP-IP / USB gateway
	COM-5004 IP Router
	COM-2001 Digital-to-analog converter (test)