DDS FREQUENCY SYNTHESIZER

Description

The unit generates a highly stable, frequency-phase-programmable sine and cosine outputs.

The main features of DDS are:

• 300 MHz internal clock rate.

• FSK, BPSK, PSK, CHIRP, AM operation.

• Dual integrated 12-Bit D/A converters.

• Ultrahigh-speed comparator, 3 ps RMS jitter.

• 4-to 20-programmable reference clock multiplier.

• Dual 48-bit programmable frequency registers.

• Dual 14-bit programmable phase offset registers.

Specification

Inputs ref clock frequency	5 to 15 MHz (Max frequency is 300 MHz with multiplier =x20)
Input clock Voltage level	2.3 VIH for single ended, 0.8 Vp-p differential mode
Output update Speed	300 MSPS
Resolution	12 bits
In phase (I) and Quadrature (Q)	10 mA
Programming of output controller	89c2051
Glue logic Interface	CPLD XC9572XL
RS422 transceiver	One
No of LVDS receivers	2, differential mode
No of LVDS drivers	1, differential mode
SMA connectors for external Interface	4
Differential input / output connectors	26 pin FRC connector
Supply voltage	5V, 3.3V