Analog Devices EVAL-AD7176-2SZD User Manual
  1. Manuals
  2. Brands
  3. Analog Devices Manuals
  4. Motherboard
  5. EVAL-AD7176-2SZD
  6. User manual
Analog Devices EVAL-AD7176-2SZD User Manual

Analog Devices EVAL-AD7176-2SZD User Manual

For the ad7176-2-24-bit, 250 ksps sigma-delta adc with 20 ?s settling
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Board for the AD7176-2—24-Bit, 250 kSPS Sigma-Delta ADC with

FEATURES

Full featured evaluation board for the
PC control in conjunction with the system demonstration
platform (EVAL-SDP-CB1Z)
PC software for control and data analysis (time domain)
Standalone capability

ONLINE RESOURCES

Evaluation Kit Contents
EVAL-AD7176-2SDZ
evaluation board
Evaluation software CD for the
Documents Needed
AD7176-2
data sheet
UG-478
user guide
Required Software
EVAL-AD7176-2SDZ
evaluation software

EQUIPMENT NEEDED

EVAL-AD7176-2SDZ
evaluation board
EVAL-SDP-CB1Z
system demonstration platform
External 7 V to 9 V power supply
DC signal source
USB cable
PC running Windows with USB 2.0 port
ADA4940-1
AD8656
ON-BOARD
NOISE TEST
AIN0
AIN1
AIN2
AIN3
AIN4
TO AD7175-2
REFOUT PIN
AD8656
AD8475
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
20 μs Settling
AD7176-2
AD7176-2

FUNCTIONAL BLOCK DIAGRAM

7V TO 9V
VIN
ADP1720
ADR445
5V LDO
5V VREF
1.8V
CROSSPOINT
LDO
MULTIPLEXER
ADC
XTAL AND INTERNAL
I/O
CLOCK OSCILLATOR
CONTROL
AVSS
GPIO0 GPIO1
Figure 1.
EVAL-AD7176-2SDZ
Rev. 0 | Page 1 of 40
Evaluation Board User Guide

GENERAL DESCRIPTION

The
EVAL-AD7176-2SDZ
24-bit, 250 kSPS analog-to-digital converter (ADC). A 7 V to
9 V external bench top supply is regulated to 5 V and 3.3 V to
supply the
AD7176-2
The
EVAL-AD7176-2SDZ
the PC by connection to the
The
EVAL-AD7176-2SDZ
AD7176-2
device register functionality and provides dc time
domain analysis in the form of waveform graphs, histograms,
and associated noise analysis for ADC performance evaluation.
The
EVAL-AD7176-2SDZ
designed to allow the user to evaluate the features of the ADC.
The user PC software executable controls the
the USB through the system demonstration platform board
(EVAL-SDP-CB1Z).
ADP1720
3.3V LDO
1.8V
PRECISION
LDO
REFERENCE
INT
REF
CS
SCLK
DIN
DIGITAL
FILTER
DOUT/RDY
SYNC/ERROR
CIRCUITRY
AD7176-2
XTAL1 CLKIO/XTAL2
DGND
Block Diagram
evaluation kit features the
and support all necessary components.
board connects to the USB port of
EVAL-SDP-CB1Z
motherboard.
software fully configures the
is an evaluation board that is
AD7176-2
ADP7104
5V LDO
USB
ADSP-BF527
POWER
SDP-B
LED
STATUS
UG-478
AD7176-2
over

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the EVAL-AD7176-2SZD and is the answer not in the manual?

Questions and answers

Related Manuals for Analog Devices EVAL-AD7176-2SZD

Summary of Contents for Analog Devices EVAL-AD7176-2SZD

  • Page 1: Features

    Evaluation Board User Guide UG-478 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluation Board for the AD7176-2—24-Bit, 250 kSPS Sigma-Delta ADC with 20 μs Settling FEATURES GENERAL DESCRIPTION EVAL-AD7176-2SDZ evaluation kit features the AD7176-2...

  • Page 2: Table Of Contents

    UG-478 Evaluation Board User Guide TABLE OF CONTENTS Analog Inputs.................6 Features ....................1 Sockets/Connectors ..............7 Online Resources ................1 Reference Options .................8 Equipment Needed ................1 Using the On-Board Amplifiers ..........8 General Description ................. 1 Evaluation Board Setup Procedures ........11 Functional Block Diagram ..............

  • Page 3: Eval-Ad7176-2Sdz Quick Start Guide

    EVAL-AD7176-2SDZ software from the Screw the two boards together using the plastic screw- Analog Devices subfolder in the Programs menu. washer set included in the evaluation board kit to ensure that the boards are connected firmly together. Figure 2. Hardware Configuration—Setting Up the EVAL-AD7176-2SDZ Rev.

  • Page 4: Evaluation Board Hardware

    UG-478 Evaluation Board User Guide EVALUATION BOARD HARDWARE DEVICE DESCRIPTION about the EVAL-SDP-CB1Z are available on the Analog Devices, Inc., website. AD7176-2 is a low noise, fast settling, multiplexed, 2-/4- HARDWARE LINK OPTIONS channel (fully differential/pseudo differential) Σ-Δ ADC. The AD7176-2 has a maximum channel-to-channel scan rate of The default link options are listed in Table 1.
  • Page 5 Evaluation Board User Guide UG-478 Link No. Default Option Description With this link in Position A, the AIN2 analog input on the AD7176-2 device is connected to Connector J8. With this link in Position B, the analog input applied via Connector J8 is buffered using the AD8656 before being applied to the AIN2 pin.

  • Page 6: Power Supplies

    UG-478 Evaluation Board User Guide POWER SUPPLIES primary signals: CS, SCLK, DIN, and DOUT/ RDY (all are inputs, except for DOUT/ RDY , which is an output.) The evaluation board requires that an external power supply— either a bench top supply or a wall wart (dc plug) supply—be If you wish to operate the EVAL-AD7176-2SDZ in standalone...

  • Page 7: Sockets/Connectors

    Evaluation Board User Guide UG-478 SOCKETS/CONNECTORS Table 4. Connector Details Connector Function Connector Type Manufacturer/Part No. Order No. Connector to EVAL-SDP-CB1Z 120-way connector, 0.6 mm pitch Hirose FX8-120S-SV(21) Farnell 1324660 External MCLK (SMA/SMB) Straight PCB mount SMB/SMA jack Tyco 1-1337482-0 Not inserted A0 to A4 Analog inputs to ADC...

  • Page 8: Reference Options

    UG-478 Evaluation Board User Guide REFERENCE OPTIONS EVAL-AD7176-2SDZ includes an external 5 V reference (the ADR445) and an internal 2.5 V reference. The default operation is to use the external reference input, which is set to accept the 5 V ADR445 on the evaluation board.
  • Page 9 Evaluation Board User Guide UG-478 0.1µF 0.1µF 0.1µF AVSS AVDD1 AVDD2 AIN0 AD8656 AIN1 R105 R100 AD7176-2 R106 SCLK REFOUT 0.1µF R116 R109 DOUT/RDY R110 R47 R115 AIN2 R107 AD8656 R117 AIN3 R120 R46 R125 REF+ REF– R126 R119 0.1µF 0.1µF ADR445 5V VREF...
  • Page 10 UG-478 Evaluation Board User Guide 0.1µF 0.1µF 0.1µF ADA4940-1 AVSS AVDD1 AVDD2 AIN0 AIN1 VOCM AD7176-2 2.5V REFOUT SCLK 0.1µF 0.1µF DOUT/RDY VOCM +IN 0.4× AIN2 AIN3 –IN 0.4× REF+ REF– AD8475 0.1µF ADR445 5V VREF 0.1µF 0.1µF 4.7µF Figure 7. Setup for the ADA4940-1 AD8475 Amplifiers...

  • Page 11: Evaluation Board Setup Procedures

    Evaluation Board User Guide UG-478 the two boards together using the plastic screw-washer set EVALUATION BOARD SETUP PROCEDURES included in the evaluation board kit to ensure that the After following the instructions in the Software Installation boards are connected firmly together. Procedures section, set up the evaluation and SDP boards as Connect the power supplies to the EVAL-AD7176-2SDZ...

  • Page 12: Evaluation Board Software

    UG-478 Evaluation Board User Guide EVALUATION BOARD SOFTWARE Select the location to install the software, and then click Next. SOFTWARE INSTALLATION PROCEDURES (Figure 9 shows the default locations, which are displayed EVAL-AD7176-2SDZ evaluation kit includes a CD when the window opens, but you can select another location containing software to be installed on your PC before you begin by clicking Browse.) using the evaluation board.
  • Page 13 Evaluation Board User Guide UG-478 A summary of the installation is displayed. Click Next to A dialog box informs you when the installation is continue. complete. Click Next. Figure 12. AD7176-2 Evaluation Software Installation: Indicating When the Installation Is Complete Figure 11.
  • Page 14 UG-478 Evaluation Board User Guide Installing the EVAL-SDP-CB1Z System Demonstration Click Install to confirm that you would like to install the Platform Board Drivers drivers. After the installation of the evaluation software is complete, a welcome window is displayed for the installation of the EVAL- SDP-CB1Z system demonstration platform board drivers.

  • Page 15: Setting Up The System For Data Capture

    Procedures and Evaluation Board Hardware sections, set up the system for data capture as follows: From the Start menu, select Programs > Analog Devices > AD7176-2 > AD7176-2 Evaluation Board Software. Allow the Found New Hardware Wizard to run after the The main window of the software then displays.

  • Page 16: Software Operation

    UG-478 Evaluation Board User Guide SOFTWARE OPERATION The indicators beside this graph show the latest data value, the channel being converted, and the flag for the error diagnostics Overview of the Main Window of the AD7176-2. Navigation tools are provided to allow you to The main window of the software (see Figure 20) contains the control the cursor, zooming, and panning (see Figure 20).
  • Page 17 Evaluation Board User Guide UG-478 ii. In the FILTCON1 register, the output data rate is Noise Test—Quick Start Demonstration set to 1 kHz, and the fast settling filter (Sinc5 + To perform a noise test using the AD7176-2 evaluation board, Sinc1) is enabled.
  • Page 18 UG-478 Evaluation Board User Guide Figure 22. Example of the Main Window After Running a Noise Test Reading Samples from the ADC When Sampling is set to Capture, a batch of samples is read when Start Sampling is clicked, with the batch size The evaluation board is set up to use the external 5 V on-board being set by the value in the Samples box.
  • Page 19 Evaluation Board User Guide UG-478 DC Waveform Capture DC Testing—Histogram The waveforms resulting from the gathered samples are shown The histogram resulting from the gathered samples is shown in in the top graph of the window. The right hand side of the window the bottom graph.
  • Page 20 UG-478 Evaluation Board User Guide Save File Select Export Data from the drop-down menu that appears. The software can save the current captured data for later analysis (see Figure 24). A Save dialog box is displayed, prompting you to save the data to an appropriate folder location.

  • Page 21: Evaluation Board Schematics And Artwork

    Evaluation Board User Guide UG-478 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 25. Schematic—AD7176-2 Rev. 0 | Page 21 of 40...
  • Page 22 UG-478 Evaluation Board User Guide Figure 26. Schematic—Amplifiers Rev. 0 | Page 22 of 40...
  • Page 23 Evaluation Board User Guide UG-478 Figure 27. Schematic—Power Supply Sequencing Rev. 0 | Page 23 of 40...
  • Page 24 UG-478 Evaluation Board User Guide Figure 28. Schematic—Regulators Rev. 0 | Page 24 of 40...
  • Page 25 Evaluation Board User Guide UG-478 Figure 29. Schematic—SDP Connector Rev. 0 | Page 25 of 40...
  • Page 26 UG-478 Evaluation Board User Guide Figure 30. EVAL-AD7176-2SDZ Evaluation Board Figure 31. Top Printed Circuit Board (PCB) Silkscreen Rev. 0 | Page 26 of 40...
  • Page 27 Evaluation Board User Guide UG-478 Figure 32. Bottom Printed Circuit Board (PCB) Silkscreen Figure 33. Layer 1 Component Side Rev. 0 | Page 27 of 40...
  • Page 28 UG-478 Evaluation Board User Guide Figure 34. Layer 2 Ground Plane Figure 35. Layer 3 Power/Ground Plane Rev. 0 | Page 28 of 40...
  • Page 29 Evaluation Board User Guide UG-478 Figure 36. Layer 4 Component Side Rev. 0 | Page 29 of 40...

  • Page 30: Eval-Ad7176-2Sdz Bill Of Materials

    UG-478 Evaluation Board User Guide EVAL-AD7176-2SDZ BILL OF MATERIALS Table 8. Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code Straight PCB mount SMB jack; Tyco 1-1337482-0 Do not insert keep hole clear of solder Straight PCB mount SMB jack; Tyco 1-1337482-0 Do not insert...
  • Page 31 Evaluation Board User Guide UG-478 Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code C0402 Ceramic capacitor, not inserted, Do not insert 0402 4.7 µF ±10% C0603 Ceramic capacitor, 6.3 V, X5R, 0603 Murata GRM188R60J47 FEC 173-5527 0.1 µF ±10% C0402 Ceramic capacitor, 16 V, X7R, 0402...
  • Page 32 UG-478 Evaluation Board User Guide Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code 4.7 µF ±10% C0603 Ceramic capacitor, 10 V, X5R, 0603 Kemet C0603C475K8P FEC 157-2625 ACTU 4.7 µF ±10% C0603 Ceramic capacitor, 6.3 V, X5R, 0603 Murata GRM188R60J47 FEC 173-5527...
  • Page 33 Evaluation Board User Guide UG-478 Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code 10 µF ±10% C0805 Ceramic capacitor, 10 µF, 16 V, Murata GRM21BR61C1 Digi-Key 490- X5R, 0805 06KE15L 3886-1-ND 0.1 µF ±10% C0402 Ceramic capacitor, 16 V, X7R, 0402 Murata GRM155R71C1 FEC 881-9742...
  • Page 34 UG-478 Evaluation Board User Guide Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code CON\POWER8 8-pin terminal header, pitch Phoenix 1727078 Do not insert (3_81PITCH) 3.81 mm, vertical Contact 1 × 4- CON\POWER4 Screw terminal block, pitch Phoenix 1727036 FEC 370-4592 (3_81PITCH)
  • Page 35 Evaluation Board User Guide UG-478 Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code 10k2 0.01 R0402 SMD resistor Multicomp MC 0.0625W FEC 1803137 0402 1% 10K2 10k2 0.01 R0402 SMD resistor Multicomp MC 0.0625W FEC 1803137 0402 1% 10K2 0.01 R0402 Resistor, 0402...
  • Page 36 UG-478 Evaluation Board User Guide Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code 100k R0603 SMD resistor Multicomp MC 0.063W FEC 9330402 0603 1% 100K 0.01 1206 Resistor, 1206 Multicomp MC 0.125W FEC 9336974 1206 0R 0.01 1206 Resistor, 1206 Multicomp...
  • Page 37 Evaluation Board User Guide UG-478 Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code 0.01 R0603 Resistor, 0603 Vishay Draloric CRCW0603000 FEC 146-9739 0Z0EA 0.01 R0603 Resistor, 0603 Vishay Draloric CRCW0603000 FEC 146-9739 0Z0EA 0.01 R0603 Resistor, not inserted, 0603 Vishay Draloric CRCW0603000 Do not insert...
  • Page 38 UG-478 Evaluation Board User Guide Name Value Tolerance PCB Decal Description Manufacturer Part No. Stock Code R115 0.01 R0603 Resistor, 0603 Bourns CR0603-FX- FEC 200-8331 10R0GLF R116 0.1% R0603 Resistor, 0603 Panasonic ERA3AEB102V FEC 157-7605 R117 0.01 R0603 Resistor, 0603 Vishay Draloric CRCW0603000 FEC 146-9739...
  • Page 39 SMALL clear of solder MSO8 32k I C serial EEPROM Microchip 24LC32A-I/MS FEC1331330 SO8NB_RD8-2 Linear regulator 5 V, 20 V, 500 mA, Analog Devices ADP7104ARDZ ADP7104ARDZ- ultralow noise, CMOS -5.0 MSO10 Quad voltage monitor and Analog Devices ADM1185ARMZ ADM1185ARMZ- sequencer...
  • Page 40 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.

Table of Contents