SBAU361 December   2020 ADC3664

 

  1.   Trademarks
  2. 1Introduction
  3. 2Equipment
    1. 2.1 ADC3664EVM Functionality
    2. 2.2 Evaluation Board Feature Identification Summary
    3. 2.3 Required Equipment
  4. 3Setup Procedure
    1. 3.1 Install High-Speed Data Converter (HSDC) Pro Software
    2. 3.2 Install ADC35XXEVM GUI 1.0 Software
    3. 3.3 Connect the ADC3664 EVM and TSW1400EVM
    4. 3.4 Connect the Power Supply and Mini-USB Connections
    5. 3.5 Connect the Clocks and Analog Input
  5. 4Device Configuration
    1. 4.1 Bypass Mode
      1. 4.1.1 ADC35XX GUI: Bypass Mode Configuration
      2. 4.1.2 HSDC Pro: Bypass Mode
    2. 4.2 Real Decimation Mode
      1. 4.2.1 ADC35XX GUI: Real Decimation Mode Configuration
      2. 4.2.2 HSDC Pro: Real Decimation Mode
    3. 4.3 Complex Decimation Mode
      1. 4.3.1 ADC35XX GUI: Complex Decimation Configuration
      2. 4.3.2 HSDC PRO: Complex Decimation Mode
  6. 5Onboard FDA Configuration
  7. 6ADC3664EVM Power Monitor
  8. 7Test Pattern

4.1.1 ADC35XX GUI: Bypass Mode Configuration

After power up, the ADC3664EVM is preconfigured for 14 bit, 2W Bypass Mode (No Decimation). There are other modes and sample rates that can be used in Bypass Mode, and Table 4-1 shows examples of required clocks for different serialization options (1W and 1/2W). To calculate the correct DCLKIN frequency for the desired sampling rate and mode, multiply the sampling rate by the DCLKIN multiplier (Serialization factor).

Table 4-1 14-Bit, Bypass Sample Rate and DCLKIN Examples (ADC3664EVM)
Interface Mode DCLKIN Multiplier
(Serialization factor)		 Example Sample Clock Required DCLKIN Frequency
2 Wire 3.5 125 MSPS 437.5 MHz
1 Wire 7 65 MSPS 455 MHz
1/2 Wire 14 35 MSPS 490 MHz

For this 14 bit, 2-Wire example, ensure that the sampling clock (J9) and DCLKIN (J7) are connected before launching the ADC35XX EVM GUI. In this example, the sampling clock is 125 MHz, and the DCLKIN is 437.5 MHz.

Attention: External ADC sampling clock source and DCLKIN source must be frequency locked. If this is not performed, the captured data will appear scrambled. If using the onboard clocking option, the sampling clock and DCLKIN are frequency locked.

After launching the ADC35xx GUI, the below items should already be populated. If not, perform the following steps for 14 bit, 2W Bypass mode:

  1. Under Resolution, select "14 bit".
  2. Under Mode, select "2 Wire".
  3. Under DDC, select "Bypass".
  4. Enter "125M" for "Fs (MHz)".
  5. Ensure that "CDC Enable" is red (disabled).
  6. Click "Configure" button.
GUID-20201201-CA0I-GMRC-DHJR-8V2MMGSVGLW3-low.png Figure 4-1 ADC35XXEVM GUI: ADC3664EVM Bypass Mode