Texas Instruments AFE4110 User Manual
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Texas Instruments AFE4110 User Manual

Texas Instruments AFE4110 User Manual

Thermometer demonstration board
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This user's guide provides a general description of the AFE4110 thermometer demonstration board
(demo-pen). Use this document with the AFE4110 data sheet to get a broader understanding of the
functions and applications of this device.
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Bill of Materials
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Hardware Description
Figure 1
shows the front and back sides of the thermometer. The board demonstrates an accurate,
low-cost, single-chip temperature measurement solution based on the AFE4110. This device is a
general-purpose, low-cost, 1.5-V microcontroller optimized for this application with features like an internal
1.85-V/3.3-V charge-pump for LCD/GPIO interface, buzzer driver, low-power sleep mode, etc. See the
AFE4110 data sheet (SLLSE48) for further details.
The measurement is done using an external thermistor with a negative temperature coefficient (NTC)
characteristic (resistance decreases with increasing temperature). The thermistor response has been
calibrated using two temperature points (at 31°C and 43°C), for an overall typical accuracy of ± 0.1°C over
that range, when measured in a calibration bath. The system has not been designed to measure human
body temperature and must not be used for health diagnosis purposes.
SLAU417 - December 2011
Submit Documentation Feedback
AFE4110 Thermometer Demonstration Board
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Copyright © 2011, Texas Instruments Incorporated
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List of Figures
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List of Tables
AFE4110 Thermometer Demonstration Board
User's Guide
SLAU417 - December 2011
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Summary of Contents for Texas Instruments AFE4110

  • Page 1: Table Of Contents

    AFE4110 Thermometer Demonstration Board This user’s guide provides a general description of the AFE4110 thermometer demonstration board (demo-pen). Use this document with the AFE4110 data sheet to get a broader understanding of the functions and applications of this device. Contents ......................

  • Page 2: Afe4110 Thermometer Demonstration Board Front (Bottom Layer) And Back (Top Layer)

    Figure 1. AFE4110 Thermometer Demonstration Board Front (Bottom Layer) and Back (Top Layer) As the AFE4110 lacks any nonvolatile memory to store code or data (unless is burnt permanently into its ROM), the board actually uses the AFE4110 RAM-based (15 KB) emulation version and loads, at boot time, the thermometer application code (~3 KB long) from an external 128k-bit SPI EEPROM.

  • Page 3: Getting Started

    3, with the positive side of the battery on top. Once this is done, the LCD displays the Firmware Version and the Hardware version, followed by the temperature display. SLAU417 – December 2011 AFE4110 Thermometer Demonstration Board Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...

  • Page 4: Board Jumper Configuration

    Board Jumper Configuration Power to the VDDIO pin of the AFE4110 and to the JTAG interface can be supplied from either the charge pump CP18CAP (1.8 × VBAT) or from the JTAG_VCCO. This is controlled by the SW1 switch on the demonstration board.

  • Page 5: Layouts

    Schematics and Layout www.ti.com Layouts Figure 5. Top Layer Copper Figure 6. Bottom Layer Copper Figure 7. Silk Screen Top Figure 8. Silk Screen Bottom SLAU417 – December 2011 AFE4110 Thermometer Demonstration Board Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...

  • Page 6: Bill Of Materials

    SUSUMU RG1005P-6492-B-T5 RES,SMT,0402 SUSUMU RG1005N102B RES,SMT,0402 PANASONIC EVQ-P2H02B SWITCH,SMT,2P KEYSTONE ELECTRONICS 5001 TP1, TP2 (DNI), TP3 TESTPOINT,THU,1P empty paragraph to eliminate blank page SLAU417 – December 2011 AFE4110 Thermometer Demonstration Board Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 9 BuzzIn BuzzOut...
  • Page 12 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 13 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
  • Page 14 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments AFE4110DPENEVM...

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