Transimpedance Amplifier with Microcontroller Reference Design


Design files


The TIDM-TIA uses a MSP430F2274 microcontroller to convert current produced by a photodiode to into a voltage using the integrated operational amplifier. It can be used to sense light in a number of different applications. Direct connection to the MSP430F2274's ADC allows for for voltage values to be analyzed and used as needed, The transimpedance amplifier system is kept to a small size by using the MSP430F2274's integrated operational amplifier which provides for a single chip solution in many industrial and consumer good applications.

  • Single chip TIA design leveraging onboard operational amplifier
  • SW configurable photodiode threshold for different lighting conditions
  • External pins allow for modification of external feedback resistor
  • Programmable via JTAG connection 5. Externally available GPIO pins and onboard LED
  • This TIA example design is tested and includes firmware, demo and Getting Started guide

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components

TIDC602.ZIP (127 K)

Design file that contains information on physical board layer of design PCB

TIDC603.ZIP (12 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430F227416 MHz MCU with 32KB Flash, 1KB SRAM, 10-bit ADC, 2 OpAmp, I2C/SPI/UART

Data sheet document-pdfAcrobat PDF

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Support software

MSP430F2274 Transimpedance Amplifier Software – TIDC601.ZIP (394 K)

Technical documentation

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Type Title Date
User guide MSP430F2274 Transimpedance Amplifier (TIDM-TIA) User’s Guide Aug. 28, 2014

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