AD6677EBZ

AD6677EBZ Datasheet

EVALUATING THE AD9683/AD6677 ANALOG-TO-DIGITAL CONVERTERS

Part	Datasheet
AD6677EBZ	AD6677EBZ (pdf)

Related Parts	Information
AD9683-170EBZ	AD9683-170EBZ
AD9683-250EBZ	AD9683-250EBZ

PDF Datasheet Preview
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106 • Tel • Fax • EVALUATING THE AD9683/AD6677 ANALOG-TO-DIGITAL CONVERTERS This user guide describes the AD9683 and AD6677 evaluation boards AD9683-170EBZ, AD9683-250EBZ, and AD6677EBZ which provide all of the support circuitry required to operate these parts in their various modes and configurations. The application software used to interface with the devices is also described. The AD9683 and AD6677 data sheets provide additional information and should be consulted when using the evaluation board. All documents and software tools are available at For additional information or questions, send an email to Typical Measurement Setup Figure Evaluation Board AD9683-250EBZ, or AD6677EBZ on Left and HSC-ADC-EVALDZ on Right q Full featured evaluation board for the AD9683/AD6677 q SPI interface for setup and control q External, on-board oscillator, or AD9525 clocking option q Balun/transformer or amplifier input drive option q On-board LDO regulator needing a single external 6 V, 2 A dc supply q and SPI controller software interfaces Helpful Documents q AD9683 or AD6677 data sheet q High speed ADC FIFO evaluation kit HSC-ADC-EVALCZ q AN-905 Application Note, VisualAnalogTM Converter Evaluation Tool Version User Manual q AN-878 Application Note, High Speed ADC SPI Control Software q AN-877 Application Note, Interfacing to High Speed ADCs via SPI q AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation Equipment Needed q Analog signal source and antialiasing filter q Sample clock source if not using the on-board oscillator q 1 V, A switching power supply, CUI EPS060250UH-PHP-SZ provided q 1 12.0V, A switching power supply, V-Infinity ETSA120330UDC-PFP-SZ provided q PC running q USB port q AD9683-170EBZ, AD9683-250EBZ, or AD6677EBZ board q HSC-ADC-EVALDZ FPGA-based data capture kit Getting Started This section provides quick start procedures for using the AD9683-170EBZ, AD9683-250EBZ, or AD6677EBZ board. Both the default and optional settings are described. Configuring the Board Before using the software for testing, configure the evaluation board as follows: Connect the evaluation board to the data capture board, as shown in Figure Connect one 6 V, A switching power supply such as the CUI, Inc., EPS060250UH-PHP-SZ that is supplied to the AD9683-170EBZ, AD9683-250EBZ, or AD6677. Connect one 12 V, A switching power supply such as the supplied V-Infinity ETSA120330UDC-PFP-SZ to the HSC-ADC-EVALCZ board. Connect the HSC-ADC-EVALDZ board P702 to the PC using a USB cable. On the ADC evaluation board, confirm that the jumpers are installed at P202, P209, P204, P205, P206, and P210 as shown in Figure 2 and Table On the ADC evaluation board, use a clean signal generator with low phase noise to provide an input signal to the AD9683 analog input. Use a 1 m, shielded, RG-58, 50 Ω coaxial cable to connect the signal generator. For best results, use a narrow-band, band-pass filter with 50 Ω terminations and an appropriate center frequency. Analog Devices, Inc., uses TTE, Allen Avionics, and K&L band-pass filters. Evaluation Board Hardware The evaluation board provides the support circuitry required to operate the AD9683 and AD6677 in their various modes and configurations. Figure 1 shows the typical bench characterization setup used to evaluate AC performance. It is critical that the signal sources used for the analog input and clock have very low phase noise <1 ps rms jitter to realize the optimum performance of the signal chain. Proper filtering of the analog input signal to remove harmonics and lower the integrated or broadband noise at the input is necessary to achieve the specified noise performance. See the evaluation board pages linked from the AD9683 and AD6677 product pages for the complete schematics and bill of materials BOM . The evaluation board layout is available upon request. The layout diagrams demonstrate the routing and grounding techniques that should be applied at the system level when designing application boards using these converters. Power Supplies This evaluation board comes with a wall-mountable switching power supply that provides a 6 V, 2 A maximum output. Connect the supply to a 100 V ac to 240 V ac, 47 Hz to 63 Hz wall outlet. The output from the supply is provided through a mm inner diameter jack that connects to the printed circuit board PCB at P201. The 6 V supply is fused and conditioned on the PCB before connecting to the low dropout linear regulators that supply the proper bias to each of the various sections on the board. The evaluation board can be powered in a nondefault condition using external bench power supplies. To do this, remove the all the jumpers listed above and in Table 1 to disconnect the outputs from the on-board LDOs. This enables the user to bias each section of the board individually. Use P1, P208, and P502 to connect a different supply for each section. A V, A supply is needed for V_AVDD, V_DVDD, and V_DRVDD. Although the power supply requirements are the same for AVDD, DVDD, and DRVDD, it is recommended that separate supplies be used for both analog and digital domains. The DVDD and DRVDD voltages can be driven from the same power supply. The SPI and its level shifters and alternate clock options require a separate V, A analog supply. In addition, if using the AD9525 and/or the ADL5202, a separate V, A analog supply is required. Input Signals When connecting the ADC clock and analog source, use clean signal generators with low phase noise, such as the Rohde & Schwarz SMA, or HP 8644B signal generators or an equivalent. Use a 1 m shielded, RG-58, 50 Ω coaxial cable for connecting to the evaluation board. Enter the desired frequency and amplitude see the Specifications section in the data sheet of the respective part . When connecting the analog input source, use of a multipole, narrow-band-pass filter with 50 Ω terminations is recommended. Analog Devices uses band-pass filters from TTE and K&L Microwave, Inc. Connect the filters directly to the evaluation board. If an external clock source is used, it should also be supplied with a clean signal generator as previously specified. Analog Devices evaluation boards typically can accept V p-p or 13 dBm sine wave input for the clock. Output Signals The default setup uses the Analog Devices high speed converter evaluation platform HSC-ADC-EVALDZ for data capture. The serial JESD204B outputs from the ADC are routed to Connector P1002 using 100 Ω differential traces. For more information on the data capture board and its optional settings, visit Jumper Settings Set the jumper settings/link options on the evaluation board for the required operating modes before powering on the board. The functions of the jumpers are described in Table Figure 2 shows the default jumper settings. Table Jumper Settings Jumper Description P202 P209 P210 P205 P206 P204 P504 This jumper sets up the V power supply voltage for the outputs of the on-board ADL5202. For the ADL5202 to work properly, its outputs must be tied to a V power supply via the appropriate sized inductors. On the AD9683-170EBZ/AD9683-250EBZ/AD6677EBZ boards these inductors are 1 uH. This jumper sets up the 3.3V analog power supply voltage for the ADL5202. This jumper connects the DVDD power supply domain to the DRVDD power supply domain to power the JESD204B output drivers of the AD9683 and AD6677.

PDF Datasheet Preview

One Technology Way
• P.O. Box 9106
• Norwood, MA 02062-9106
• Tel
• Fax
•

EVALUATING THE AD9683/AD6677 ANALOG-TO-DIGITAL CONVERTERS

This user guide describes the AD9683 and AD6677 evaluation boards AD9683-170EBZ, AD9683-250EBZ, and AD6677EBZ which provide all of the support circuitry required to operate these parts in their various modes and configurations. The application software used to interface with the devices is also described. The AD9683 and AD6677 data sheets provide additional information and should be consulted when using the evaluation board. All documents and software tools are available at For additional information or questions, send an email to

Typical Measurement Setup

Figure Evaluation Board AD9683-250EBZ, or AD6677EBZ on Left and HSC-ADC-EVALDZ on Right
q Full featured evaluation board for the AD9683/AD6677 q SPI interface for setup and control q External, on-board oscillator, or AD9525 clocking option q Balun/transformer or amplifier input drive option q On-board LDO regulator needing a single external 6 V, 2 A dc supply q and SPI controller software interfaces

Helpful Documents
q AD9683 or AD6677 data sheet q High speed ADC FIFO evaluation kit HSC-ADC-EVALCZ q AN-905 Application Note, VisualAnalogTM Converter Evaluation Tool Version User Manual q AN-878 Application Note, High Speed ADC SPI Control Software q AN-877 Application Note, Interfacing to High Speed ADCs via SPI q AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation

Equipment Needed
q Analog signal source and antialiasing filter q Sample clock source if not using the on-board oscillator q 1 V, A switching power supply, CUI EPS060250UH-PHP-SZ provided q 1 12.0V, A switching power supply, V-Infinity ETSA120330UDC-PFP-SZ provided q PC running q USB port q AD9683-170EBZ, AD9683-250EBZ, or AD6677EBZ board q HSC-ADC-EVALDZ FPGA-based data capture kit

Getting Started

This section provides quick start procedures for using the AD9683-170EBZ, AD9683-250EBZ, or AD6677EBZ board. Both the default and optional settings are described.

Configuring the Board

Before using the software for testing, configure the evaluation board as follows:

Connect the evaluation board to the data capture board, as shown in Figure Connect one 6 V, A switching power supply such as the CUI, Inc., EPS060250UH-PHP-SZ that is
supplied to the AD9683-170EBZ, AD9683-250EBZ, or AD6677. Connect one 12 V, A switching power supply such as the supplied V-Infinity

ETSA120330UDC-PFP-SZ to the HSC-ADC-EVALCZ board. Connect the HSC-ADC-EVALDZ board P702 to the PC using a USB cable. On the ADC evaluation board, confirm that the jumpers are installed at P202, P209, P204, P205,

P206, and P210 as shown in Figure 2 and Table On the ADC evaluation board, use a clean signal generator with low phase noise to provide an
input signal to the AD9683 analog input. Use a 1 m, shielded, RG-58, 50 Ω coaxial cable to connect the signal generator. For best results, use a narrow-band, band-pass filter with 50 Ω terminations and an appropriate center frequency. Analog Devices, Inc., uses TTE, Allen Avionics, and K&L band-pass filters.

Evaluation Board Hardware

The evaluation board provides the support circuitry required to operate the AD9683 and AD6677 in their various modes and configurations. Figure 1 shows the typical bench characterization setup used to evaluate AC performance. It is critical that the signal sources used for the analog input and clock have very low phase noise <1 ps rms jitter to realize the optimum performance of the signal chain. Proper filtering of the analog input signal to remove harmonics and lower the integrated or broadband noise at the input is necessary to achieve the specified noise performance.

See the evaluation board pages linked from the AD9683 and AD6677 product pages for the complete schematics and bill of materials BOM . The evaluation board layout is available upon request. The layout diagrams demonstrate the routing and grounding techniques that should be applied at the system level when designing application boards using these converters.

Power Supplies

This evaluation board comes with a wall-mountable switching power supply that provides a 6 V, 2 A maximum output. Connect the supply to a 100 V ac to 240 V ac, 47 Hz to 63 Hz wall outlet. The output from the supply is provided through a mm inner diameter jack that connects to the printed circuit board PCB at P201. The 6 V supply is fused and conditioned on the PCB before connecting to the low dropout linear regulators that supply the proper bias to each of the various sections on the board.

The evaluation board can be powered in a nondefault condition using external bench power supplies. To do this, remove the all the jumpers listed above and in Table 1 to disconnect the outputs from the on-board LDOs. This enables the user to bias each section of the board individually. Use P1, P208,
and P502 to connect a different supply for each section. A V, A supply is needed for V_AVDD, V_DVDD, and V_DRVDD. Although the power supply requirements are the same for AVDD, DVDD, and DRVDD, it is recommended that separate supplies be used for both analog and digital domains. The DVDD and DRVDD voltages can be driven from the same power supply. The SPI and its level shifters and alternate clock options require a separate V, A analog supply. In addition, if using the AD9525 and/or the ADL5202, a separate V, A analog supply is required.

Input Signals

When connecting the ADC clock and analog source, use clean signal generators with low phase noise, such as the Rohde & Schwarz SMA, or HP 8644B signal generators or an equivalent. Use a 1 m shielded, RG-58, 50 Ω coaxial cable for connecting to the evaluation board. Enter the desired frequency and amplitude see the Specifications section in the data sheet of the respective part . When connecting the analog input source, use of a multipole, narrow-band-pass filter with 50 Ω terminations is recommended. Analog Devices uses band-pass filters from TTE and K&L Microwave, Inc. Connect the filters directly to the evaluation board.

If an external clock source is used, it should also be supplied with a clean signal generator as previously specified. Analog Devices evaluation boards typically can accept V p-p or 13 dBm sine wave input for the clock.

Output Signals

The default setup uses the Analog Devices high speed converter evaluation platform HSC-ADC-EVALDZ for data capture. The serial JESD204B outputs from the ADC are routed to Connector P1002 using 100 Ω differential traces. For more information on the data capture board and its optional settings, visit

Jumper Settings

Set the jumper settings/link options on the evaluation board for the required operating modes before powering on the board. The functions of the jumpers are described in Table Figure 2 shows the default jumper settings.

Table Jumper Settings

Jumper Description

P202

P209 P210 P205 P206 P204

P504

This jumper sets up the V power supply voltage for the outputs of the on-board ADL5202. For the ADL5202 to work properly, its outputs must be tied to a V power supply via the appropriate sized inductors. On the AD9683-170EBZ/AD9683-250EBZ/AD6677EBZ boards these inductors are 1 uH.

This jumper sets up the 3.3V analog power supply voltage for the ADL5202.

This jumper connects the DVDD power supply domain to the DRVDD power supply domain to power the JESD204B output drivers of the AD9683 and AD6677.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AD6677EBZ Datasheet file may be downloaded here without warranties.

Datasheet ID: AD6677EBZ 517782