DEMO MANUAL DC1532 LTC2268-14/-12, LTC2267-14/-12, LTC2266-14/-12, LTC2265-14/-12, LTC2264-14/-12, LTC2263-14/-12 12-/14-Bit, 25Msps to 125Msps Dual ADCs Description Demonstration circuit 1532 supports a family of 14-/12- the DC1532 is supplied with the appropriate ADC. The bit 25Msps to 125Msps ADCs. Each assembly features circuitry on the analog inputs is optimized for analog input one of the following devices: LTC2268-14, LTC2268-12, frequencies from 5MHz to 140MHz. Refer to the data sheet LTC2267-14, LTC2267-12, LTC2266-14, LTC2266-12, for proper input networks for different input frequencies. LTC2265-14, LTC2265-12, LTC2264-14, LTC2264-12, Design files for this circuit board are available at LTC2263-14, LTC2263-12 high speed, dual ADCs. DEMO MANUAL DC1532 Quick s tart p D Table 1. DC1532 Variants DC1532 VARIANTS ADC PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE INPUT FREQUENCY 1532A-A LTC2268-14 14-Bit 125Msps 5MHz to 140MHz 1532A-B LTC2267-14 14-Bit 105Msps 5MHz to 140MHz 1532A-C LTC2266-14 14-Bit 80Msps 5MHz to 140MHz 1532A-D LTC2265-14 14-Bit 65Msps 5MHz to 140MHz 1532A-E LTC2264-14 14-Bit 40Msps 5MHz to 140MHz 1532A-F LTC2263-14 14-Bit 25Msps 5MHz to 140MHz 1532A-G LTC2268-12 12-Bit 125Msps 5MHz to 140MHz 1532A-H LTC2267-12 12-Bit 105Msps 5MHz to 140MHz 1532A-I LTC2266-12 12-Bit 80Msps 5MHz to 140MHz 1532A-J LTC2265-12 12-Bit 65Msps 5MHz to 140MHz 1532A-K LTC2264-12 12-Bit 40Msps 5MHz to 140MHz 1532A-L LTC2263-12 12-Bit 25Msps 5MHz to 140MHz Demonstration circuit 1532 is easy to set up to evaluate J8: Term: Enables/Disable optional output termination. the performance of the LTC2268 A/D converters. Refer to (Default Removed) Figure 1 for proper measurement equipment setup and J5: ILVDS: Selects either 1.75mA or 3.5mA of output cur- follow the procedure: rent for the LVDS drivers. (Default Removed) Setup J14: LANE: Selects either 1 lane or 2 lane output modes (Default Removed) NOTE: The DC1371 does not support If a DC1371 QuikEval II Data Acquisition and Collection 1 lane operation. System was supplied with the DC1532 demonstration circuit, follow the DC1371 Quick Start Guide to install the J15: SHDN: Enables and disables the LTC2268. required software and for connecting the DC1371 to the (Default Removed) DC1532 and to a PC. J2: WP: Enable/Disables write protect for the EEPROM. (Default Removed) DC1532 Demonstration Circuit Board Jumpers Note: Optional jumper should be left open to ensure proper The DC1532 demonstration circuit board should have serial configuration. the following jumper settings as default positions: (as per Figure 1) J13: PAR/SER: Selects Parallel or Serial programming mode. (Default Serial) Optional Jumpers: dc1532f 2 ure roce