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| resources:eval:user-guides:circuits-from-the-lab:pulsar-adc-pmods [02 Aug 2021 05:18] – hardware registration links Trisha Cabildo | resources:eval:user-guides:circuits-from-the-lab:pulsar-adc-pmods [02 Mar 2023 02:47] – updated the design files download link Joyce Velasco |
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| ====== PulSAR ADC PMODs ====== | ====== PulSAR ADC PMODs ====== |
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| These low power ADCs offer very high performance from 14-bits up to 18-bits with throughputs ranging from 100ksps to 1.3MSPS. The boards are designed to demonstrate the ADC's performance and to provide an easy digital interface for a variety of system applications. A full description of these products are available in their respective data sheets and should be consulted when utilizing the boards. To purchase hardware, please visit our [[adi>en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/PulsarPMODs.html|website.]] | These low power ADCs offer very high performance from 14-bits up to 18-bits with throughputs ranging from 100 kSPS to 1.3 MSPS. The boards are designed to demonstrate the ADC's performance and to provide an easy digital interface for a variety of system applications. A full description of these products is available in their respective data sheets and should be consulted when utilizing the boards. To purchase hardware, please visit our [[adi>en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/PulsarPMODs.html|website.]] |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod.jpg?500 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod.jpg?500 |}} |
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| <WRAP center round info 80%> | <WRAP center round info 80%> |
| * The throughput of your PulSAR ADC will be limited to the SPI bus speed of your platform. For example if you are using the SDP platform the max bus rate on the SPI is 30 MHz. | * The throughput of your PulSAR ADC will be limited to the SPI bus speed of your platform. For example, if you are using the SDP platform the max bus rate on the SPI is 30 MHz. |
| </WRAP> | </WRAP> |
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| ==== Power Supply Requirements ==== | ==== Power Supply Requirements ==== |
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| Typically when using a PMOD board the power for the module comes directly from the host board it is connected to. The power is generally capable of providing up to 100 mA at 3.3V, and for complete power specifications please [[https://www.digilentinc.com/Pmods/Digilent-Pmod_%20Interface_Specification.pdf|click here]]. | Typically, when using a PMOD board the power for the module comes directly from the host board it is connected to. The power is generally capable of providing up to 100 mA at 3.3V, and for complete power specifications please [[https://www.digilentinc.com/Pmods/Digilent-Pmod_%20Interface_Specification.pdf|click here]]. |
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| In the case of the high precision, successive approximation ADC's architecture, it was required to provide low noise external power supplies to obtain datasheet results. The ADC's are driven by precision amplifiers which are also optimized for noise and power. In order to enable those amplifiers to provide zero and full scale inputs to the ADC, power supplies above and below the ADC input range were needed. | In the case of the high precision, successive approximation ADC's architecture, it was required to provide low noise external power supplies to obtain datasheet results. The ADC's are driven by precision amplifiers which are also optimized for noise and power. In order to enable those amplifiers to provide zero and full scale inputs to the ADC, power supplies above and below the ADC input range were needed. |
| ==== Input Connectors ==== | ==== Input Connectors ==== |
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| For the input signals coming into the PMOD board, SMB connectors were chosen to help minimize the noise at the input. There are two(2) SMB connectors per board, and thats because there are both positive(+) and negative(-) inputs to each converter. This will provide the user with the cleanest input signal possible, an fully utilize the resolution and speed of the converters. | For the input signals coming into the PMOD board, SMB connectors were chosen to help minimize the noise at the input. There are two (2) SMB connectors per board, and thats because there are both positive(+) and negative(-) inputs to each converter. This will provide the user with the cleanest input signal possible, and fully utilize the resolution and speed of the converters. |
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| {{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:vin.png?500 |}} | {{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:vin.png?500 |}} |
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| Each of the converters also has a combination of single ended inputs, differential inputs, or pseudo-differential inputs. So in order to determine the input style of your converter it is imperative to look at the datasheet for the device you are using. The datasheet of any device should always be followed before using it in an application or on a board | Each of the converters also has a combination of single-ended inputs, differential inputs, or pseudo-differential inputs. So in order to determine the input style of your converter it is imperative to look at the datasheet of the device you are using. The datasheet of any device should always be followed before using it in an application or on a board. |
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| ==== Digital Interface (PMOD) ==== | ==== Digital Interface (PMOD) ==== |
| ==== Evaluation ==== | ==== Evaluation ==== |
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| Evaluating the PulSAR ADC PMOD boards is very simple. Using the required equipment follow these simple steps to get the evaluation working. Please make sure you completely unplug all the boards before beginning. | Evaluating the PulSAR ADC PMOD boards is very simple. Using the required equipment, follow these simple steps to get the evaluation working. Please make sure you completely unplug all the boards before beginning. |
| - Plug in the Mini USB cable from a USB port on your PC, to the **J1** of the EVAL-SDP-CB1Z.{{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:sdp_usb.jpg?400 |}} | - Plug in the Mini USB cable from a USB port on your PC, to the **J1** of the EVAL-SDP-CB1Z.{{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:sdp_usb.jpg?400 |}} |
| * Make sure that the computer installs the device drivers, and that you can see the //ADI Development Tools// in your computer's device manager.{{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:device_manager.png?500 |}} | * Make sure that the computer installs the device drivers, and that you can see the //ADI Development Tools// in your computer's device manager.{{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:device_manager.png?500 |}} |
| ===== Schematics, PCB Layout, Bill of Materials ===== | ===== Schematics, PCB Layout, Bill of Materials ===== |
| <WRAP round 80% download> | <WRAP round 80% download> |
| **Rev 0 Board Files** | * Schematics |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod-_schematic.pdf|Schematics}} (PDF) | * PCB Layout |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod.xlsx|Bill of Materials}} (Excel) | * Bill of Materials |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod_-_layout.pdf|Layout}} (PDF) | * Allegro Project |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod_-_assembly.pdf|Assembly Drawing}} (PDF) | |
| </WRAP> | |
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| <WRAP round 80% download> | [[adi>eval-ad7685-pmdz-designsupport | EVAL-AD7685-PMDZ Design & Integration Files]] |
| **Rev A Board Files** | \\ |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:02-043559-01-a-1.pdf|Schematics}} (PDF) | [[adi>eval-ad7686-pmdz-designsupport | EVAL-AD7686-PMDZ Design & Integration Files]] |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:05_043559-a-11.xlsx|Bill of Materials}} (Excel) | \\ |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:layout_art.zip|Layout}} (ZIP) | [[adi>eval-ad7687-pmdz-designsupport | EVAL-AD7687-PMDZ Design & Integration Files]] |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:gerbers.zip|Gerber}} (ZIP) | \\ |
| * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:assy1.pdf|Assembly Drawing}} (PDF) | [[adi>eval-ad7688-pmdz-designsupport | EVAL-AD7688-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7690-pmdz-designsupport | EVAL-AD7690-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7691-pmdz-designsupport | EVAL-AD7691-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7693-pmdz-designsupport | EVAL-AD7693-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7946-pmdz-designsupport | EVAL-AD7946-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7980-pmdz-designsupport | EVAL-AD7980-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7982-pmdz-designsupport | EVAL-AD7982-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7983-pmdz-designsupport | EVAL-AD7983-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7984-pmdz-designsupport | EVAL-AD7984-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7988-1-pmdz-designsupport | EVAL-AD7988-1-PMDZ Design & Integration Files]] |
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| | [[adi>eval-ad7988-5-pmdz-designsupport | EVAL-AD7988-5-PMDZ Design & Integration Files]] |
| </WRAP> | </WRAP> |
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