DC579A Analog Devices

DEMO MANUAL DC579A LTC2600 Octal 16-Bit DAC DESCRIPTION Demonstration circuit 579A features the LTC2600 octal Another feature of this board is the onboard LTC2428 20- 16-bit DAC. This device establishes a new board density bit ADC for monitoring DAC output voltage. The 16ppm benchmark for 16-bit DACs and advances performance total error of this device is adequate for taking meaningful standards for output drive, crosstalk and load regulation measurements of various LTC2600 parameters. in single supply, voltage-output multiple DACs. Design files for this circuit board are available at The DC579A has many features for evaluating the perfor- DEMO MANUAL DC579A QUICK START PROCEDURE n n Connect the DC579A to a DC590 USB serial controller Click the COLLECT button to begin outputting codes to using the supplied 14-conductor ribbon cable. the DACs and reading back the resulting output voltage for each DAC. n Connect the DC590 to a host PC with a standard USB A/B cable. Complete software documentation is available from the Help menu item, as features may be added periodically. n Run the evaluation software supplied with the DC590 or download it from www.linear.com/software. The correct control panel will be loaded automatically. Figure 2. Evaluation Software HARDWARE SETUP JUMPERS troller board. Selecting the 5V reference for V and V CC REF allows characterization of rail-to-rail operation of the JP1 (ADC Disable): Set to ON for normal operation, with LTC2600. the onboard ADC enabled. For very sensitive noise mea- surements, the ADC may be disabled. The software will then display a positive full-scale reading. ANALOG CONNECTIONS JP2 (V Select): Either a 5V or 4.096V reference can DAC Outputs: The eight DAC outputs from the LTC2600 REF be selected. To apply an external reference through the are brought out to turrets labeled DAC A through DAC H. V turret, remove this jumper. These may be connected to external instruments or other REF circuitry. DAC outputs are not in alphabetical order on the JP3 (V Select): V is taken either from the onboard CC CC circuit board. 5V reference or the 5V regulated supply from the con- dc579af 2