ROHM BU79100G-LA-EVK-001 Evaluation Board for A/D Converter User Guide

June 5, 2024
ROHM

User’s Guide
A/D Converter

BU79100G-LA-EVK-001 Manual

BU79100G-LA-EVK-001 is an evaluation board for A/D Converter BU79100G-LA. This User’s Guide will show how to use BU79100G-LA-EVK-001 together with RKX- EVK-001 and the ADC Windows GUI that is part of the ADC Evaluation Kit.

Preparation

  • BU79100G-LA-EVK-001 ×1pc
  • RKX-EVK-001 ×1pc
  • Ribbon cable inc used with RKX-EVK-001 ×1pc
  • micro-USB cable included with RKX-EVK-001 ×1pc
  • PC with the ADC Windows GUI installed ×1pc

Setting

  1. Download the latest installer (ROHM_EVK_Setup.exe) from the URL below and install the ADC Windows GUI 1 . https://www.rohm.com/products/data-converter/a-dconverters#evalutionBoard After installation, the shortcuts to the ADC Windows GUI and to the ADC Evaluation Kit User’s Guide can be found on the desktop, in the Windows Start menu under ROHM_EVK folder, and in the installation directory: \Documents\ROHM_EVK\ 1 The software is subject to change without notice.

  2.  Start the ADC Windows GUI.
    If an update pop-up window is shown, click Yes to download the latest configurations from the server.(Figure 1)

  3. Connect BU79100G-LA-EVK-001 to 14-pin connector J5 of RKX-EVK-001 with a ribbon cable or directly to 18-pin connector J6. (Figure 2)

  4. Connect BU79100G-LA-EVK-001 to RKX-EVK-001 and connect to the PC using a micro-USB cable. 2
    2 With Windows 10, the operating system should automatically use the correct driver. For the earlier Windows versions, please follow the driver installation procedure in the ADC Evaluation Kit User’s Guide.

[Optional]
The CY8CKIT-059 PSoC® 5LP Prototyping Kit comes preloaded with the custom firmware when purchased as part of RKX-EVK-001. The latest version of the firmware can be found in the installation directory: \Documents\ROHM_EVK\ROHM- EVK-Firmware
The guide for programming the custom firmware to the Cypress CY8CKIT-059 PsoC® 5LP Prototyping Kit can be found in the ADC Evaluation Kit User’s Guide.

Measurement

  1. Input analog signals to AIN and GND of CN2 onBU79100G-LA-EVK-001. (Figure. 3)

  2. Start the ADC Windows GUI.

  3. Select the BU79100G stream from the Stream menu: e.g.: BU79100G / ADC data (VA=3.3V, 10kSPS, noninverted)

  4. If the settings are adjusted properly, data streaming should start automatically *3 , and the on-screen output should display real-time output for BU79100G-LA.(Figure 4)

*3 If data streaming does not start automatically, click the Streaming button.
[Optional]
For additional details about the ADC Windows GUI, please see the ADC Evaluation Kit User’s Guide.

Board Information*4

*4 Board Information is subject to change without notice.

  • Digital Communication Interface: SPI
  • Supply Voltage Range: 2.7V – 5.25V
  • Operating Temperature Range: -40℃ – +85℃

Table 1. Parts Information

Parts Number Description
U1 IC: BU79100G-LA
U3 CMOS LDO regulator: BU33JA2VG-C
C2 Capacitor for LPF: 100pF
C3 Bypass capacitor for VDD_SEL: 0.1uF
C4 Bypass capacitor for VDD_SEL: 10uF
C5 Bypass capacitor for VDD_IO: 4.7uF
C8 Input capacitor for LDO: 2.2uF
C9 Output capacitor for LDO: 2.2uF
C10 Output capacitor for LDO: 0.1uF
R1, R14 Jumper resistor: 0Ω
R6 Resistor for LPF: 220Ω
R8 Damping resistor for SCLK: 330Ω
R9 Damping resistor for SDATA: 100Ω
R10 Damping resistor for CSB: 330Ω
JP1, JP2 Connector: 1×3 pin、2.54mm pitch
 CN1 Connector: 2×7 pin、2.54mm pitch
CN2 Connector: 1×5 pin、2.54mm pitch

Notes

  1. The information contained herein is subject to change without notice.
  2. Before you use our Products, please contact our sales representative and verify the latest specifications:
  3. Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors. Therefore, in order to prevent personal injury or fire arising from failure, please take safety measures such as complying with the derating characteristics, implementing redundant and fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no responsibility for any damages arising out of the use of our Products beyond the rating specified by ROHM.
  4. Examples of application circuits, circuit constants, and any other information contained herein are provided only to illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production.
  5. The technical information specified herein is intended only to show the typical functions of and
  6. examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM or any other parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of such technical information. The Products specified in this document are not designed to be radiation tolerant.
  7. For use of our Products in applications requiring a high degree of reliability (as exemplified below), please contact and consult with a ROHM representative: transportation equipment (i.e. cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety equipment, medical systems, servers, solar cells, and power transmission systems.
  8. Do not use our Products in applications requiring extremely high reliability, such as aerospace equipment, nuclear power control systems, and submarine repeaters.
  9. ROHM shall have no responsibility for any damages or injury arising from non-compliance with the recommended usage conditions and specifications contained herein.
  10. ROHM has used reasonable care to ensure the accuracy of the information contained in this document. However, ROHM does not warrant that such information is error-free, and ROHM shall have no responsibility for any damages arising from any inaccuracy or misprint of such information.
  11. Please use the Products in accordance with any applicable environmental laws and regulations, such as the RoHS Directive. For more details, including RoHS compatibility, please contact a ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting from non-compliance with any applicable laws or regulations.
  12. When providing our Products and technologies contained in this document to other countries, you must abide by the procedures and provisions stipulated in all applicable export laws and regulations, including without limitation the US Export Administration Regulations and the Foreign Exchange and Foreign Trade Act.
  13. This document, in part or in whole, may not be reprinted or reproduced without the prior consent of ROHM.

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