DC1298A-LA Analog Devices

DEMO CIRCUIT DC1298 DC1298 QUICK START GUIDE LTM9002 14 bit Dual Channel IF/Baseband Receiver Subsystem DESCRIPTION quisition demo board and the output can be easily ana- Demonstration circuit 1298 is an evaluation board featur- lyzed with Linear Technologys PScope data processing ing Linear Technology Corporations LTM9002 14-bit software, which is available for no charge on our website Dual Receiver Subsystem. DC1298 demonstrates good at DC1298 3. Apply an input signal to the board. For best re- 4. Observe the ADC output with demo circuit sults, use a low distortion, low noise signal genera- DC890B, a USB cable, a Windows computer, and tor with sufficient filtering to avoid degrading the Linear Technologys PScope data processing soft- performance of the receiver. ware. NOTE. Even a high-quality signal synthesizer will still have noise and Power Supply harmonics that should be attenuated (3.3V-6V 1.0A) with a low-pass or band-pass filter. For good-quality high order filters, see TTE, Lark Engineering, or equivalent. Signal Generator BPF HP 8644B or equiv. To DC890B Signal Generator HP 8644B or BPF equiv. RF Signal Generator (HP 8644B) or other BPF low phase noise clock source (e.g. DC1216) Figure 1. Proper Measurement Equipment Setup USING PSCOPE SOFTWARE PScope, downloadable from Linear Technologys website