DC1563A-G Analog Devices

DEMO MANUAL DC1563A LTC2315/LTC2314/LTC2313/LTC2312/ 12-Bit/14-Bit, 5Msps/4.5Msps/ 2.5Msps/500ksps/Serial, High Speed SAR ADCs DESCRIPTION Demonstration circuit 1563A features the LTC 2315 collection boards. Use the DC590 to demonstrate DC family. With sample rates up to 5Msps these unipolar, performance such as peak-to-peak noise and DC linearity. single channel, 12-/14-Bit, serial, high speed successive Use the DC718 if precise sampling rates are required or to approximation register (SAR) ADCs are available in an demonstrate AC performance such as SNR, THD, SINAD 8-lead TSOT package. The LTC2315 family has an internal and SFDR. Alternatively, by connecting the DC1563A into 20ppm reference and an SPI-compatible serial interface a customer application the performance of the LTC2315 that supports 1.8V, 2.5V, 3V and 5V logic. The following can be evaluated directly in that circuit. text refers to the LTC2315 but applies to all members of Design files for this circuit board are available at the family, the only difference being the sample rate and DEMO MANUAL DC1563A DESCRIPTION Table 1. DC1563A Assembly Options VERSION U1 PART NUMBER MAX CONVERSION RATE OF BITS MAX CLOCK FREQUENCY DC1563A-A LTC2315CTS8-12 5Msps 12 90MHz DC1563A-B LTC2313CTS8-12 2.5Msps 12 82.5MHz DC1563A-C LTC2312CTS8-12 500ksps 12 16.5MHz DC1563A-F LTC2314CTS8-14 4.5Msps 14 90MHz DC1563A-G LTC2313CTS8-14 2.5Msps 14 100MHz DC1563A-H LTC2312CTS8-14 500ksps 14 20MHz DC718 QUICK START PROCEDURE Connect the DC1563A to a DC718 USB high speed data Complete software documentation is available from the collection board using connector J2. Connect the DC718 Help menu. Updates can be downloaded from the Tools to a host PC with a standard USB A/B cable. Apply 9V to menu. Check for updates periodically as new features 10V DC to the 9V to 10V and GND terminals. Apply a low may be added. The PScope software should recognize the jitter signal source to J4. As a clock source, apply a low DC1563A and configure itself automatically. jitter 10dBm sine wave or square wave to connector J1. Click the Collect button (Figures 2 and 3) to begin acquir- See Table 1 for maximum clock frequencies. Note that J1 ing data. The Collect button then changes to Pause, which has a 50 termination resistor to ground. Run the PScope can be used to stop data acquisition. software (Pscope.exe version K73 or later) supplied with the DC718 or download it from www.linear.com/software. DC590B QUICK START PROCEDURE correct control panel will be loaded automatically. Click the Connect the DC1563A to a DC590 USB serial controller Collect (Figures 4 and 5) button to begin gathering data using the supplied 14-conductor ribbon cable. Make sure from the ADC. Make sure the reference voltage selected that VCCIO of the DC590 is set to 3.3V. Connect the DC590 in the QuikEval control panel matches the V and V to a host PC with a standard USB A/B cable. Apply a signal DD CM settings on the DC1563A. source to J4. Run the QuikEval software supplied with the DC590 or download it from www.linear.com/software. The dc1563af 2