Analog Devices EVAL-AD5142DBZ Скачать руководство пользователя страница 15 | Manualshive

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Evaluation Board User Guide

UG-471

Rev. 0 | Page 15 of 20

DAUGHTER BOARD

A1

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Figure 17. Schematic of Daughter Board

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Содержание EVAL-AD5142DBZ

Страница 1: ...digital potentiometer With versatile programmability the AD5142 allows multiple modes of operation including read write access in the RDAC and EEMEM registers increment decrement of resistance resistance changes in 6 dB scales wiper setting read back and extra EEMEM for storing user defined information such as memory data for other components or a lookup table The AD5142 supports a dual supply 2 2...

Страница 2: ...therboard and SDP S 1 Revision History 2 Evaluation Board Hardware 3 Power Supplies 3 Test Circuits 4 Evaluation Board Software 8 Installing the Software 8 Software Operation 10 Evaluation Board Schematics and Artwork 11 Motherboard 11 Daughter Board 15 Ordering Information 18 Bill of Materials 18 REVISION HISTORY 11 12 Revision 0 Initial Version ...

Страница 3: ... board via the SDP board using a PC The functions of these link options are described in detail in Table 3 through Table 6 Table 2 Link Options Setup for SDP Control Default Link No Option A5 3V3 A11 3 3 V A12 AGND Linear Gain Setting Mode The linear gain setting mode pin is controlled directly by Jumper A1 If the jumper is placed in DEPEN the AD5142 powers up in potentiometer mode and the linear ...

Страница 4: ...B is the voltage applied to the B terminal A10 link However by using the R34 and R35 external resistors the user can reduce the voltage of the voltage references In this case use the A1 and B1 test points to measure the voltage applied to the A and B terminals and to recalculate VA and VB in Equation 1 Table 4 DAC Voltage References Terminal Link Options Description A1 A9 AC Connects Terminal A1 t...

Страница 5: ... Signal Attenuation Link Options Voltage Supply Maximum AC Signal Amplitude Link Options Conditions Single VDD A9 AC No dc offset voltage the ac signal is outside the voltage supply rails due to the dc offset voltage or the dc offset voltage VDD 2 1 AC All other conditions A10 BIAS Use in conjunction with the AC link GND All other conditions Dual VDD VSS A9 AC The ac signal is outside the voltage ...

Страница 6: ... in the RDAC2 11008 005 VOUT2 VIN RDAC2 R42 C1 10nF W2 B2 A2 B2 W2 R41 1 7kΩ A2 R43 Figure 5 Pseudologarithmic Noninverting Amplifier R43 and R42 can be used to set the maximum and minimum gain limits The inverting amplifier with linear gain is shown in Figure 6 and the gain is defined in Equation 5 Note that the input signal VIN must be negative AW2 WB2 R R G 5 where RWB2 is the code loaded for t...

Страница 7: ...lifier Selection Link Options Amplifier Gain Linear Setting Gain Mode Enabled Link Label Noninverting Linear Yes A7 LIN A6 N INV A8 N INV Pseudologarithmic No A7 LOG A6 N INV A8 N INV Inverting Linear Yes A7 LIN A6 INV A8 INV Pseudologarithmic No A7 LOG A6 INV A8 INV ...

Страница 8: ...up the evaluation board as described in the Power Supplies section 4 Connect the EVAL AD5142DBZ and EVAL MB LV SDZ to the SDP board and then connect the SDP board to the PC using the USB cable included with the SDP board 5 When the software detects the evaluation board follow the instructions that appear to finalize the installation To run the program do the following 1 Click Start All Programs An...

Страница 9: ...Evaluation Board User Guide UG 471 Rev 0 Page 9 of 20 11008 022 11008 023 Figure 9 EVAL AD5142DBZ Software Main Window ...

Страница 10: ...you to send quick commands directly to the AD5142 The INDIVIDUAL CHANNEL COMMANDS section allows you to send quick commands to only specific channels of the AD5142 The block diagram allows you to update the control register status Each register value can be easily updated by changing the value in its respective block within the diagram In addition buttons are available that allow you to change the...

Страница 11: ...Evaluation Board User Guide UG 471 Rev 0 Page 11 of 20 EVALUATION BOARD SCHEMATICS AND ARTWORK MOTHERBOARD 11008 009 Figure 11 SDP Connector and Power Supply ...

Страница 12: ...UG 471 Evaluation Board User Guide Rev 0 Page 12 of 20 11008 010 Figure 12 Schematic of Test Circuits ...

Страница 13: ...Evaluation Board User Guide UG 471 Rev 0 Page 13 of 20 11008 011 Figure 13 Schematic of Connectors to Daughter Board ...

Страница 14: ...on Board User Guide Rev 0 Page 14 of 20 11008 012 Figure 14 Component Side View of Motherboard 11008 013 Figure 15 Component Placement Drawing of Motherboard 11008 014 Figure 16 Layer 2 Side PCB Drawing of Motherboard ...

Страница 15: ...ND DGND AGND VLOGIC VSS VDD DGND VLOGIC A1 B A 9 10 14 13 12 11 16 5 1 W1 B1 A2 B2 INDEP INDEP INDEP DEPEN INDEP W2 W1 B1 A2 W2 2 U1 A1 B2 AD5142 3 4 6 8 15 7 J1 1 J1 2 J1 3 J1 4 J1 5 J1 6 J1 8 J1 7 ADDR0 ADDR1 SDA J3 1 J3 2 J3 3 J3 4 J3 5 J2 1 J2 3 J2 5 J2 7 J2 11 J2 9 J2 2 J2 4 J2 6 J2 8 J2 12 J2 10 A1 W1 B1 A2 B2 W2 A3 W3 B3 A4 B4 W4 J4 1 J4 2 J4 3 J4 4 J4 5 SCL SYNC SDO SCLK SDI 11008 015 Figu...

Страница 16: ...UG 471 Evaluation Board User Guide Rev 0 Page 16 of 20 11008 016 Figure 18 Component Side View of Daughter Board 11008 017 Figure 19 Component Placement Drawing of Daughter Board ...

Страница 17: ...Evaluation Board User Guide UG 471 Rev 0 Page 17 of 20 11008 018 Figure 20 Layer 2 Side PCB Drawing of Daughter Board ...

Страница 18: ... R14 SMD resistor 100 Ω 1 0603 FEC 9330364 1 R4 SMD resistor 1 kΩ 0 01 0603 FEC 9330380 3 R5 R25 R26 SMD resistor 100 kΩ 1 0603 FEC 9330402 5 R15 R16 R17 R18 R19 SMD resistor 33 kΩ 1 0603 FEC 9331034 1 C1 SMD capacitor 100 nF 10 0805 FEC 1650863 8 C4 C9 C10 C11 C12 C17 C19 C21 SMD capacitor 0 1 µF 10 0603 FEC 1759122 4 C2 C6 C7 C14 SMD capacitor 0 1 µF 10 0603 FEC 3019482 2 C8 C13 SMD capacitor 10...

Страница 19: ... AD5142BCPZ10 1 A1 3 pin SIL header and shorting link FEC 1022248 and 150410 2 C2 C4 6 3 V tantalum capacitor Case A 10 µF 20 FEC 1190107 2 C1 C3 50 V X7R ceramic capacitor 0 1 µF 10 FEC 1759122 1 J1 Header 2 54 mm PCB 1 8 way FEC 1766172 1 J2 12 pin 2 6 0 1 pitch header FEC 1804099 2 J3 J4 5 pin SIL header FEC 1929016 1 FEC refers to Farnell Electronic Component Distributors ...

Страница 20: ...ose or transfer any portion of the Evaluation Board to any other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred damages or ...

Страница 21: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc EVAL AD5142DBZ ...

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