Texas Instruments MSP430F2274 User Manual Download Page 10

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References

www.ti.com

References

1. MSP430F2274:

Product Folder

2. MSP-FET430UIF:

Tool Folder

3. OSRAM SFH 2701 (

PDF

)

4. Compensate Transimpedance Amplifiers Intuitively (

SBOA055A

)

5. Transimpedance Considerations for High-Speed Amplifiers (

SBOA122

)

6. TIDM-TIA:

Design Folder

MSP430F2274 Transimpedance Amplifier (TIDM-TIA) User's Guide

TIDU443 – August 2014

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Summary of Contents for MSP430F2274

Page 1: ...be used to turn the LED on or off based on simple logic Other GPIO pins are also available to use externally The entire process of the TIA is indicated in Figure 1 Figure 1 TIA Block Diagram The TIDM...

Page 2: ...Purpose Operational Amplifier Op Amp Operational Amplifier TI Texas Instruments TIA Transimpedance Amplifier TIDM TIA The name of this reference design Blue wire Patch wires added to a circuit board...

Page 3: ...that light Wavelengths between 400 and 1050 nm affect the photodiode Currents from 0 1 to 100 A can be obtained depending on the light hitting the photodiode With indoor lighting current output can ra...

Page 4: ...se the onboard feedback resistor Connecting the Ext and middle pins of both JP3 and JP4 allows for the use of an external feedback resistor An external resistor can be connected to the TIDM TIA board...

Page 5: ...l Amplifier The TIDM TIA uses the MSP430F2274 s integrated op amp with a feedback resistor to provide the current to voltage conversion Using the op amp is preferred to simply feeding the photodiode s...

Page 6: ...ions in Figure 5 Currents created by the photodiode range from 0 to 1 5 A which are used as test values Figure 5 TIA SPICE Simulation The Tina TI SPICE model of the op amp is available on the MSP430F2...

Page 7: ...is connected to by default See the MSP430F2274 user s guide for more information on the ADC 3 8 GPIO Pins On the TIDM TIA P1 0 from the MSP430F2274 controls the onboard LED The LED turns on when the p...

Page 8: ...O UCB0SDA 10 P3 2 UCB0SOMI UCB0SCL 11 P3 3 UCB0CLK UCA0STE 12 AVSS 13 AVCC 14 P4 0 TB0 15 P4 1 TB1 16 P4 2 TB2 17 P4 3 TB0 A12 OA0O 18 P4 4 TB1 A13 OA1O 19 P4 5 TB2 A14 OA0I3 20 P4 6 TBOUTH A15 OA1I3...

Page 9: ...ors Inc J1 J2 JP1 JP3 Header 100 mil TSW 103 07 G S 5 Samtec Inc TSW 103 07 G S Digi Key SAM1029 03 ND TSW 103 07 G S JP4 3 1 Gold TH Header 100 mil J3 JP2 TSW 102 07 G S 2 Samtec Inc TSW 102 07 G S D...

Page 10: ...F 4 Compensate Transimpedance Amplifiers Intuitively SBOA055A 5 Transimpedance Considerations for High Speed Amplifiers SBOA122 6 TIDM TIA Design Folder 10 MSP430F2274 Transimpedance Amplifier TIDM TI...

Page 11: ...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...