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User's Guide

SBAU213 – September 2013

ADS8860EVM-PDK

This user's guide describes the operation and use of the

ADS8860

evaluation module (EVM). The

ADS8860 is a 16-bit, pseudo-differential, unipolar, successive approximation register (SAR), analog-to-
digital converter (ADC) with a maximum throughput of 1 MSPS. The device is a very low-power ADC with
excellent noise and distortion performance for ac or dc signals. The performance demonstration kit (PDK)
eases EVM evaluation with additional hardware and software for computer connectivity through a
universal serial bus (USB). The

ADS8860EVM-PDK

includes the ADS8860EVM as a daughter card,

MMB0 motherboard, A-to-B USB cable, and 6-V wall-adapter power supply. This user's guide covers
circuit description, schematic diagram, and bill of materials for the ADS8860EVM daughter card.

ADS8860EVM-PDK

Contents

1

Related Documentation

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2

2

ADS8860EVM-PDK Overview

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3

3

EVM Analog Interface

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4

4

EVM Digital Interface

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6

5

EVM Power-Supply Inputs

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7

6

EVM Digital Configuration

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8

7

PDK Kit Setup

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9

8

PDK Kit Operation

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11

9

Bill of Materials, Schematics, and Layout

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14

ADCPro is a trademark of Texas Instruments.
Windows is a registered trademark of Microsoft Corporation.
I

2

C is a trademark of NXP Semiconductors.

Samtec is a trademark of Samtec, Inc.
All other trademarks are the property of their respective owners.

1

SBAU213 – September 2013

ADS8860EVM-PDK

Submit Documentation Feedback

Copyright © 2013, Texas Instruments Incorporated

Summary of Contents for ADS8860EVM-PDK

Page 1: ...MMB0 motherboard A to B USB cable and 6 V wall adapter power supply This user s guide covers circuit description schematic diagram and bill of materials for the ADS8860EVM daughter card ADS8860EVM PD...

Page 2: ...S8860EVM PCB Top Layer 15 13 ADS8860EVM PCB Ground Layer 15 14 ADS8860EVM PCB Power Layer 16 15 ADS8860EVM PCB Bottom Layer 16 List of Tables 1 Related Documentation 2 2 Analog Inputs 4 3 J2 Serial In...

Page 3: ...to Digital Converter Evaluation Software User s Guide SBAU128 available for download from www ti com ADS8860EVM Daughter Board Features Includes support circuitry as a design example to match ADC per...

Page 4: ...to properly drive the ADS8860 ADC input Use appropriate caution when handling these pins Table 2 summarizes the pinout for analog interface J1 Table 2 Analog Inputs Pin Connector Number Signal Descrip...

Page 5: ...n Figure 2 Figure 2 Single Ended Signal Example 3 3 Voltage Reference Because the EVM is powered by a 5 V analog supply the reference should be a value below 5 V This EVM uses 4 5 V created by the onb...

Page 6: ...JP3 is J2 17 CONVST installed J2 4 J2 10 and J2 18 GND Digital ground connections I2 C bus used only to program the U4 EEPROM on J2 16 J2 20 I2 C bus the EVM board J2 2 J2 5 6 J2 8 9 J2 11 12 J2 14 a...

Page 7: ...power supply connected to J3 3 The ADS8860 is limited to 3 6 V for the analog supply so the board regulates down the 5 V analog supply with an onboard 3 3 V low dropout receiver LDO such as the TPS78...

Page 8: ...ising edge of the chip select signal starts a conversion then after the conversion time the falling edge of the chip select signal brings the digital output out of 3 state Figure 4 shows the serial co...

Page 9: ...ment 7 1 Installing the ADCPro Software ADCPro is the primary program used to evaluate the ADS8860 ADCPro is available at www ti com tool adcpro Refer to the ADCPro User s Guide SBAU128 for detailed i...

Page 10: ...J12 must be closed This setting allows the wall supply to power up the MMB0 and ADS8860EVM through J2 6 VDC input and regulate down to 5 V 3 3 V J13B must be closed This setting connects the 5 V analo...

Page 11: ...se ADCPro and the ADS8860EVM plug in to acquire data 8 1 About MMB0 The MMB0 provides the USB interface between the PC and the ADS8860EVM The MMB0 is a modular EVM system motherboard The MMB0 is desig...

Page 12: ...MSPS With an SCLK frequency of 10 MHz data rate can be set to a value from 4 kSPS to 344 827 kSPS 2 SCLK By default SCLK is at 80 MHz SCLK sets the clock frequency used by the SPI interface to captur...

Page 13: ...ires and displays data in a graph of voltage versus time For further details regarding how to set up and use the various test plug ins refer to the ADCPro User s Guide SBAU128 8 5 Acquiring Data When...

Page 14: ...A JACK STRAIGHT PCB Amphenol 132134 13 2 JP1 JP2 Header Strip 3 pin 100 Gold 1x3 Samtec TSW 103 07 L S 14 2 JP3 JP4 Header Strip 2 pin 100 Gold 1x2 Samtec TSW 102 07 L S 15 6 R1 R14 R16 R27 Not Instal...

Page 15: ...rd layouts are not to scale These figures are intended to show how the board is laid out they are not intended to be used for manufacturing ADS8860EVM PCBs Figure 12 ADS8860EVM PCB Top Layer Figure 13...

Page 16: ...ematics and Layout www ti com Figure 14 ADS8860EVM PCB Power Layer Figure 15 ADS8860EVM PCB Bottom Layer 16 ADS8860EVM PDK SBAU213 September 2013 Submit Documentation Feedback Copyright 2013 Texas Ins...

Page 17: ...www ti com Bill of Materials Schematics and Layout 9 3 Schematic 17 SBAU213 September 2013 ADS8860EVM PDK Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated...

Page 18: ...o handling the product This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI a...

Page 19: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

Page 20: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments ADS8860EVM PDK...

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