Product Summary

The TMS37157 combines a Low Frequency Transponder Interface with an SPI Interface and Power
Management for a connected microcontroller. It is the ideal device for any Configuration, Data Logger-, Sensoror
Remote Control Application. The Transponder memory is accessible through SPI and LF and, in the second
case, operates without the need for a battery. The use of the Low Frequency Band ensures a communication in
a defined direction and harsh environments.
The TMS37157 manages the Transponder communication and push button interaction. During sleep state the
devices enters a special low power mode with only 60 nA current consumption.
The EEPROM memory is accessible over the LF interface without support from the battery or through SPI by a
microcontroller if a battery is connected. The TMS37157 offers a special battery charge mode.
The external resonance circuit with a LF coil and a resonance capacitor can be trimmed to the correct resonance
frequency with the integrated trimming capability achieving an easy way to eliminate part tolerances.
The small RSA 16-pin package together with only a few external components results in a cost efficient design.

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TMS37157IRSARG4
TMS37157IRSARG4
Texas Instruments
RFID Transponder Pass Lo Freq Interf Dev W/ EEPROM
Data Sheet
0-1: $1.98
1-25: $1.61
25-100: $1.45
100-250: $1.32
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TMS3112
TMS3112
Other

Data Sheet
Negotiable 
TMS3121
TMS3121
Other

Data Sheet
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TMS320
TMS320
Other

Data Sheet
Negotiable 
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TMS32010
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Data Sheet
Negotiable 
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TMS320AV7110
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Data Sheet
Negotiable 
TMS320BC51PQ100
TMS320BC51PQ100
Texas Instruments
Digital Signal Processors & Controllers (DSP, DSC) TMS320C51PQ - 132QFP - 100MHZ/BOOT CODE
Data Sheet
Negotiable