Texas Instruments ADS8860EVM-PDK User Manual

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This user's guide describes the operation and use of 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

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.

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Summary of Contents for Texas Instruments ADS8860EVM-PDK

Page 1: Table Of Contents
......................PDK Kit Operation ................Bill of Materials, Schematics, and Layout ADCPro is a trademark of Texas Instruments. Windows is a registered trademark of Microsoft Corporation. C is a trademark of NXP Semiconductors. Samtec is a trademark of Samtec, Inc.
Page 2 J2: Serial Interface Header ..................J3: Power-Supply Interface Header ..................ADS8860EVM Bill of Materials Related Documentation Table 1 lists the related documents that are available for download from Texas Instruments at www.ti.com. Table 1. Related Documentation Device Literature Number ADS8860 SBAS547 OPA333...
Page 3: Ads8860Evm-Pdk Overview
Thus, the EVM is available as part of the ADS8860EVM-PDK kit that combines the ADS8860EVM as a daughter board with the digital signal processor (DSP)-based MMB0 motherboard using ADCPro™ software as a graphical user interface (GUI).
Page 4: Evm Analog Interface
AINP = 2.25V ± A0(-) 1k 2.25V +2.15V 4.7 0.1V 1k AINP A0(-) -2.15V 10000pF OPA836 +1.125V JP4 (CLOSED) 4.7 AINN Figure 1. Differential Input Example ADS8860EVM-PDK SBAU213 – September 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 5: Ths4281 Reference Driver With Complementary Opa333 For Drift And Offset Correction
1µF Vref THS4281 1k OPA333 1k 4.5V from 0.22 REF5045 1µF 1µF 10µF Figure 3. THS4281 Reference Driver with Complementary OPA333 for Drift and Offset Correction SBAU213 – September 2013 ADS8860EVM-PDK Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 6: Evm Digital Interface
C bus that records the board name and assembly date to communicate with the onboard EEPROM. The bus is not used in any form by the ADS8860 converter. ADS8860EVM-PDK SBAU213 – September 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 7: Evm Power-Supply Inputs
The EVM only has one ground plane for all analog and digital supplies, thus, pins J3.5 and J3.6 are tied together to this ground plane. Therefore, both supply grounds should be connected to pins J3.5–6 so they share the same ground. SBAU213 – September 2013 ADS8860EVM-PDK Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 8: Evm Digital Configuration
Figure 5 shows the serial configuration for this mode. DVDD 10k J2:1 or J2:7 ADS8860 SCLK (CLOSED) CONVST CONVST CONVST J2:17 Figure 5. Serial 4-Wire Configuration ADS8860EVM-PDK SBAU213 – September 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 9: Pdk Kit Setup
NOTE: ADCPro should be installed before attempting to install the ADS8860EVM-PDK plug-in software. The installation file link for the PDK plug-in can be found in the ADS8860EVM-PDK product folder at www.ti.com/tool/ADS8860evm-pdk. In the software section, look for a link with a file named ads886x- adcproplugin-<version #>.exe (<version #>...
Page 10: Mmb0 Motherboard Jumper Configuration
PDK Kit Setup www.ti.com Configuring the ADS8860EVM-PDK Hardware The ADS8860EVM-PDK contains both the ADS8860EVM and the MMB0 motherboard; however, the devices may be shipped unconnected or configured incorrectly. Follow these steps to verify that the ADS8860EVM-PDK kit is properly configured and connected: Step 1.
Page 11: Pdk Kit Operation
Check the pin alignment carefully before applying power to the PDK. Powering up the ADS8860EVM-PDK When the ADS8860EVM-PDK kit is configured, power can be applied to the MMB0. This power comes from a wall supply that delivers 6 VDC to the MMB0 through J2 on the MMB0 motherboard. This wall power supply is included with the PDK.
Page 12: Ads8860Evm Plug-In: Device Configuration Tab
Note that the device name is ADS8881 because the software is based on the ADS8881EVM. 6. Collection bar: This feature shows the percentage of data collected during an acquisition session. ADS8860EVM-PDK SBAU213 – September 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 13: Adcpro Test Plug-Ins
Troubleshooting If the ADS8860EVM plug-in cannot find the ADS8860EVM-PDK, press the RESET button on the MMB0 and try again. If ADCPro stops responding while the ADS8860EVM-PDK is connected, shut down and restart the ADCPro software.
Page 14: Bill Of Materials, Schematics, And Layout
IC OPAMP GP 5.5MHZ SGL SOT23-5 Texas OPA376AIDBV Instruments — IC EEPROM 256KBIT 400KHZ 8TSSOP Microchip 24LC256-I/ST — IC OPAMP CHOP R-R 350KHZ SOT23-5 Texas OPA333AIDBV Instruments ADS8860EVM-PDK SBAU213 – September 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 15: Ads8860Evm Pcb: Top Layer
NOTE: Board 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. ADS8860EVM PCB: Ground Layer SBAU213 – September 2013 ADS8860EVM-PDK Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 16: Ads8860Evm Pcb: Power Layer
Bill of Materials, Schematics, and Layout www.ti.com Figure 14. ADS8860EVM PCB: Power Layer Figure 15. ADS8860EVM PCB: Bottom Layer ADS8860EVM-PDK SBAU213 – September 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
Page 18 Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
Page 19 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
Page 20: Ads8860Evm-Pdk
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