DC2085A-A Analog Devices

DEMO MANUAL DC2085 LTC2000, LTC2000A 16-, 14-, 11-Bit, 2.5Gsps to 2.7Gsps DACs DESCRIPTION Demonstration circuit 2085 supports the LTC 2000 and The circuitry on the analog outputs is optimized for analog LTC2000A, a high speed, high dynamic range family of frequencies from DC-1.08GHz. DACs. It was specially designed for applications that re- Design files for this circuit board are available at quire differential DC coupled outputs. DC2085 supports DEMO MANUAL DC2085 QUICK START PROCEDURE DC2085 is easy to set up to evaluate the performance of the Setup LTC2000. Refer to Figure 1 for proper measurement equip- If the Altera Stratix IV GX FPGA Development Kit was not ment set-up and follow the procedure below: supplied with the DC2085 demonstration circuit, follow the Altera Stratix IV demo manual to install the required software and for connecting the Altera Stratix IV to the DC2085 and to a PC. 5V + SINGLE-ENDED SAMPLE CLOCK INPUT DIFFERENTIAL OUTPUTS NOMINAL OUTPUTS LOOK LIKE 50 PER SIDE TO DRIVE AN EXTERNAL BALUN, OR COMBINER JUMPERS SHOWN IN THEIR DEFAULT POSITIONS THE DC2085 CONNECTS TO THE ALTERA STRATIX IV CONNECT USB TO PC EVALUATION BOARD VIA HSMC CONNECTORS RUNNING LTDACGen SOFTWARE Figure 1. DC2085 Setup (zoom for details) dc2085afb 2