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| test-and-measurement:analog-discovery-2:reference-manual [2021/10/19 19:30] Arthur Brown |
test-and-measurement:analog-discovery-2:reference-manual [2021/12/06 19:58](current) Arthur Brownreupload figures blocked by adblock |
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| The Analog Discovery 2 equipped with 13 test and measurement instruments providing the functionality of an entire benchtop worth of equipment in one device. The Oscilloscope, Waveform Generator, Logic Analyzer, Protocol Analyzer, Spectrum Analyzer, Power Supplies, and more provide a device that can become a pop-up electronics laboratory anywhere. The physical design of the Analog Discovery 2 provides BNC connectors or MTE cables for the analog inputs and outputs, MTE cables for the digital I/O, triggers, and power supplies, and a large removable and breadboardable design surface supporting a large variety of designs or projects. | The Analog Discovery 2 equipped with 13 test and measurement instruments providing the functionality of an entire benchtop worth of equipment in one device. The Oscilloscope, Waveform Generator, Logic Analyzer, Protocol Analyzer, Spectrum Analyzer, Power Supplies, and more provide a device that can become a pop-up electronics laboratory anywhere. The physical design of the Analog Discovery 2 provides BNC connectors or MTE cables for the analog inputs and outputs, MTE cables for the digital I/O, triggers, and power supplies, and a large removable and breadboardable design surface supporting a large variety of designs or projects. | ||
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| {{Digilent Image Gallery | {{Digilent Image Gallery | ||
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| | image = {{ :reference:test-and-measurement:analog-discovery-2:analog_discovery_2_bottom_600.png?direct |}} | | image = {{ :reference:test-and-measurement:analog-discovery-2:analog_discovery_2_bottom_600.png?direct |}} | ||
| | image = {{ :reference:test-and-measurement:analog-discovery-2:analog_discovery_2-sides_combined-600.jpg?direct |}} | | image = {{ :reference:test-and-measurement:analog-discovery-2:analog_discovery_2-sides_combined-600.jpg?direct |}} | ||
| - | | image = {{:reference:test-and-measurement:analog-discovery-2:ad2_-_in-use_-_laser_trip_wire_-_with_computer_-_600.jpg?direct |}} | + | | image = {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_-_in-use_-_laser_trip_wire_-_with_computer_-_600.jpg?direct |}} |
| | image = {{reference/test-and-measurement/analog-discovery-2/analog-discovery-2-7.png?direct |}} | | image = {{reference/test-and-measurement/analog-discovery-2/analog-discovery-2-7.png?direct |}} | ||
| | image = {{reference/test-and-measurement/analog-discovery-2/analog-discovery-2-8.png?direct |}} | | image = {{reference/test-and-measurement/analog-discovery-2/analog-discovery-2-8.png?direct |}} | ||
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| - | {{ :analog_discovery_2:ad2_15.png |Figure 14. Scope spectral characteristic diagram. Low gain (up), high gain (down).}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_15.png |Figure 14. Scope spectral characteristic diagram. Low gain (up), high gain (down).}} |
| //{{anchor:figure_14:Figure 14. Scope spectral characteristic diagram. Low gain (up), high gain (down).}}// | //{{anchor:figure_14:Figure 14. Scope spectral characteristic diagram. Low gain (up), high gain (down).}}// | ||
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| - | {{ :analog_discovery_2:ad2_19.png?700 |Figure 19. AWG I/V and out.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_19.png?700 |Figure 19. AWG I/V and out.}} |
| //{{anchor:figure_19:Figure 19. AWG I/V and out.}}// | //{{anchor:figure_19:Figure 19. AWG I/V and out.}}// | ||
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| As shown in [[analog_discovery_2:refmanual#figure_23|Fig. 23]], the Analog Discovery 2's power can be supplied either from the USB port (VBUS) or from an external power supply (J4 connector). | As shown in [[analog_discovery_2:refmanual#figure_23|Fig. 23]], the Analog Discovery 2's power can be supplied either from the USB port (VBUS) or from an external power supply (J4 connector). | ||
| - | {{ :analog_discovery_2:ad2_24.png |Figure 23. USB power control.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_24.png |Figure 23. USB power control.}} |
| //{{anchor:figure_23:Figure 23. USB power control.}}// | //{{anchor:figure_23:Figure 23. USB power control.}}// | ||
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| IC46A/B op amps insert the command voltages $V_{SET+\_USR}$ and $V_{SET-\_USR}$, respectively, in the feedback loop. Additionally, IC46B introduces the required inversion for the negative supply. | IC46A/B op amps insert the command voltages $V_{SET+\_USR}$ and $V_{SET-\_USR}$, respectively, in the feedback loop. Additionally, IC46B introduces the required inversion for the negative supply. | ||
| - | {{ :analog_discovery_2:ad2_27.png |Figure 26. User power supplies.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_27.png |Figure 26. User power supplies.}} |
| //{{anchor:figure_26:Figure 26. User power supplies.}}// | //{{anchor:figure_26:Figure 26. User power supplies.}}// | ||
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| * Forced PWM and automatic PWM/PSM modes | * Forced PWM and automatic PWM/PSM modes | ||
| - | {{ :analog_discovery_2:ad2_28.png |Figure 27. 3.3V internal analog power supply.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_28.png |Figure 27. 3.3V internal analog power supply.}} |
| //{{anchor:figure_27:Figure 27. 3.3V internal analog power supply.}}// | //{{anchor:figure_27:Figure 27. 3.3V internal analog power supply.}}// | ||
| - | {{ :analog_discovery_2:ad2_29.png |Figure 28. 1.8V internal analog power supply.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_29.png |Figure 28. 1.8V internal analog power supply.}} |
| //{{anchor:figure_28:Figure 28. 1.8V internal analog power supply.}}// | //{{anchor:figure_28:Figure 28. 1.8V internal analog power supply.}}// | ||
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| The 5.5V and -5.5V supplies [[analog_discovery_2:refmanual#figure_30|Fig. 30]] are created with a Sepic-Cuk topology, built around a single [[http://www.analog.com/en/power-management/switching-regulators-integrated-fet-switches/adp1612/products/product.html|ADP1612]] Step-Up DC-to DC converter. Both Sepic and Cuk converters are connected to the same switching pin of the regulator. Only the positive Sepic output is regulated, while the negative output tracks the positive one. This is an accepted behavior, since similar load currents are expected on both positive and negative rails. | The 5.5V and -5.5V supplies [[analog_discovery_2:refmanual#figure_30|Fig. 30]] are created with a Sepic-Cuk topology, built around a single [[http://www.analog.com/en/power-management/switching-regulators-integrated-fet-switches/adp1612/products/product.html|ADP1612]] Step-Up DC-to DC converter. Both Sepic and Cuk converters are connected to the same switching pin of the regulator. Only the positive Sepic output is regulated, while the negative output tracks the positive one. This is an accepted behavior, since similar load currents are expected on both positive and negative rails. | ||
| - | {{ :analog_discovery_2:ad2_31.png |Figure 30. ±5.5V internal analog supplies.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_31.png |Figure 30. ±5.5V internal analog supplies.}} |
| //{{anchor:figure_30:Figure 30. ±5.5V internal analog supplies.}}// | //{{anchor:figure_30:Figure 30. ±5.5V internal analog supplies.}}// | ||
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| *紧凑PCB足迹 | *紧凑PCB足迹 | ||
| - | {{ :analog_discovery_2:ad2_33.png |Figure 32. 3.3V internal digital supply.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_33.png |Figure 32. 3.3V internal digital supply.}} |
| //{{anchor:figure_32:Figure 32. 3.3V internal digital supply.}}// | //{{anchor:figure_32:Figure 32. 3.3V internal digital supply.}}// | ||
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| * Forced PWM and automatic PWM/PSM modes | * Forced PWM and automatic PWM/PSM modes | ||
| - | {{ :analog_discovery_2:ad2_34.png |Figure 33. 1.8V internal digital supply.}} | + | {{ :test-and-measurement:analog-discovery-2:analog-discovery-2_34.png |Figure 33. 1.8V internal digital supply.}} |
| //{{anchor:figure_33:Figure 33. 1.8V internal digital supply.}}// | //{{anchor:figure_33:Figure 33. 1.8V internal digital supply.}}// | ||