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Evaluation Board User Guide

UG-469

Rev. 0 | Page 7 of 20

Table 6. Amplifier 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

«
...
5
6
7
8
9
...
»

Summary of Contents for UG-469

Page 1: ...memory digital potentiometer With versatile programmability the AD5144 allows multiple modes of operation including read write access in the RDAC and EEMEM registers increment decrement of resistance...

Page 2: ...nd SDP S 1 Revision History 2 Evaluation Board Hardware 3 Power Supplies 3 Digital Interface 3 Test Circuits 4 Evaluation Board Software 8 Installing the Software 8 Software Operation 10 Evaluation Bo...

Page 3: ...SDZ motherboard and should be set up before using the board Table 2 describes the positions of the links to control the evaluation board via the SDP board using a PC The functions of these link option...

Page 4: ...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 poi...

Page 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...

Page 6: ...oninverting 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 t...

Page 7: ...ifier 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...

Page 8: ...the evaluation board as described in the Power Supplies section 4 Connect the EVAL AD5144DBZ and EVAL MB LV SDZ to the SDP board and then connect the SDP board to the PC using the USB cable included w...

Page 9: ...Evaluation Board User Guide UG 469 Rev 0 Page 9 of 20 11006 022 Figure 11 EVAL AD5144DBZ Software Main Window...

Page 10: ...ou to send quick commands directly to the AD5144 The INDIVIDUAL CHANNEL COMMANDS section allows you to send quick commands to only specific channels of the AD5144 The block diagram allows you to updat...

Page 11: ...Evaluation Board User Guide UG 469 Rev 0 Page 11 of 20 EVALUATION BOARD SCHEMATICS AND ARTWORK MOTHERBOARD 11006 012 Figure 13 SDP Connector and Power Supply...

Page 12: ...UG 469 Evaluation Board User Guide Rev 0 Page 12 of 20 11006 013 Figure 14 Schematic of Test Circuits...

Page 13: ...Evaluation Board User Guide UG 469 Rev 0 Page 13 of 20 11006 014 Figure 15 Schematic of Connectors to Daughter Board...

Page 14: ...n Board User Guide Rev 0 Page 14 of 20 11006 015 Figure 16 Component Side View of Motherboard 11006 016 Figure 17 Component Placement Drawing of Motherboard 11006 017 Figure 18 Layer 2 Side PCB Drawin...

Page 15: ...5 6 7 12 13 14 15 16 18 17 19 22 21 23 24 20 1 8 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...

Page 16: ...UG 469 Evaluation Board User Guide Rev 0 Page 16 of 20 11006 019 Figure 20 Component Side View of Daughter Board 11006 020 Figure 21 Component Placement Drawing of Daughter Board...

Page 17: ...Evaluation Board User Guide UG 469 Rev 0 Page 17 of 20 11006 021 Figure 22 Layer 2 Side PCB Drawing of Daughter Board...

Page 18: ...R14 SMD resistor 100 1 0603 FEC 9330364 1 R4 SMD resistor 1 k 0 01 0603 FEC 9330380 3 R5 R25 R26 SMD resistor 100 k 1 0603 FEC 9330402 5 R15 R16 R17 R18 R19 SMD resistor 33 k 1 0603 FEC 9331034 1 C1...

Page 19: ...e quad SPDT switch ADG774BRQZ 3 A1 ADDR0 ADDR1 3 pin SIL header and shorting link FEC 1022248 and 150410 2 C2 C4 6 3 V tantalum capacitor Case A 10 F 20 FEC 1190107 2 C1 C3 50 V X7R ceramic capacitor...

Page 20: ...se 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 re...

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