TDA5251

The IC is a low power consumption single chip FSK/ASK Transceiver for half duplex low datarate communication in the 315MHz band. The IC offers a very high level of integration and needs only a few external components. It contains a highly efficient power amplifier, a low noise amplifier (LNA) with AGC, a double balanced mixer, a complex direct conversion stage, I/Q limiters with RSSI generation, an FSK demodulator, a fully integrated VCO and PLL synthesizer, a tuneable crystal oscillator, an onboard data filter, a data comparator (slicer), positive and negative peak detectors, a data rate detection circuit and a 2/3-wire bus interface. Additionally there is a power down feature to save battery power

ParametricTDA5251
Frequency Band315.0MHz
Channel Requirements per BandSingle Channel
Modulation TypeASK / FSK
Transmit Power (@3V)9.0dBm
Temperature  min  max-40.0°C  85.0°C
Frequency Range (@ 25°C)  min  max312.0MHz  325.0MHz
ASK Receive Sensitivity-109.0dBm
FSK Receive Sensitivity-109.0dBm
Supply Voltage  min  max2.1V  5.5V
Sales Product NameTDA5251
OPNTDA5251XUMA1
Product Statusnot for new design
Package NamePG-TSSOP-38
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size3000
Packing TypeTAPE & REEL
Summary of Features:
  • Low supply current (Is= 9mA typ. receive, Is = 13mA typ. transmit mode)
  • Supply voltage range 2.1 - 5.5V
  • Power down mode with very low supply current consumption
  • FSK and ASK modulation and demodulation capability
  • Fully integrated VCO and PLL  synthesizer and loop filter on-chip with onchip crystal oscillator tuning
  • I2C/3-wire μController Interface
  • On-chip low pass channel select filter and data filter with tuneable bandwidth
  • Data slicer with self-adjusting threshold and 2 peak detectors
  • FSK sensitivity <-109dBm, ASK sensitivity <109dBm
  • Transmit power up to +13dBm
  • Self-polling logic with ultra fast data rate detection
Target Applications:
  • Low Bitrate Communication Systems
  • Keyless Entry Systems
  • Remote Control Systems
  • Alarm Systems
  • Telemetry Systems
  • Electronic Metering
  • Home Automation Systems
Data Sheet
TitleSizeDateVersion
TDA5251,EN2 MB01 Feb 200701_01
Product Overview
TitleSizeDateVersion
Short Technical Portfolio Overview204 KB13 May 201301_01
Application Notes
TitleSizeDateVersion
TDA525x_7255V_AN_CLKDIV1.7 MB11 Nov 201001_00
RF Design Verification Guidelines994 KB18 Oct 201201_00
Product Brief
TitleSizeDateVersion
TDA525x118 KB15 Jan 2007
Errata Sheet
TitleSizeDateVersion
TDA525x_TDA7255V_Errata Sheet973 KB23 Sep 201101_00
Additional Product Information
TitleSizeDateVersion
TEW Crystal Recommendation120 KB26 Sep 201201_01
NDK Crystal Recommendation262 KB17 Aug 201201_02
Kyocera Crystal Recommendation362 KB11 Aug 201101_01
AEL Crystal Recommendation165 KB20 Mar 201201_00
Application Brochure
TitleSizeDateVersion
Transportation Brochure (24-60V)6.9 MB01 Jul 2013
Material Content SheetInfo
TitleSizeDateVersion
MCDS_2013-08-28_23-10-31_MA000218825_PG-TSSOP-38-1.pdf23 KB31 Oct 201301_00
PCB Design Data
TitleSizeDateVersion
PCB Footprints and Symbols - TDA5251 - Wireless Control Transceiver - MWO – v2.0.zipEN259 KB28 Apr 201501_00
PCB Footprints&Symbols - Transceiver - Altium163 KB30 Sep 201301_00
PCB Footprints&Symbols - Transceiver - Cadence164 KB30 Sep 201301_00
PCB Footprints&Symbols - Transceiver - Eagle28 KB30 Sep 201301_00
PCB Footprints&Symbols - Transceiver - Mentor161 KB30 Sep 201301_00
Evaluation Boards
BoardFamilyDescriptionStatus
TDA5235_315_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240
TDA5235_434_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240
TDA5235_868_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240
TDA5235_915_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240on request
TDA5240_315_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240
TDA5240_434_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240
TDA5240_868_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240
TDA5240_915_5_BOARDReceiverEvaluation kit for the TDA 52xx receiver for 315, 434, 868 and 915MHz. For the complete kit a SmartLEWIS_SIB_Board is required.SmartLEWIS™TDA 5225TDA 5235TDA 5240on request
TDA5250-TDA5250_868 KITTransceiverEvaluation kit for the transceiver TDA 525x for 315, 434, 868 and 915 MHz.TDA 5250TDA 5251TDA 5252TDA 5255active and preferred
TDA5252-TDA5252_915 KITEvaluation kit for the transceiver TDA 525x for 315, 434, 868 and 915 MHz.TDA 5250TDA 5251TDA 5252TDA 5255active and preferred
Package Data
TitleSizeDateVersion
PG-TSSOP-38-1 | TDA5251XUMA1EN489 KB11 Apr 201601_00
PCB Design Data
TitleSizeDateVersion
PCB Footprints and Symbols - TDA5251 - Wireless Control Transceiver - MWO – v2.0.zipEN259 KB28 Apr 201501_00
PCB Footprints&Symbols - Transceiver - Altium163 KB30 Sep 201301_00
PCB Footprints&Symbols - Transceiver - Cadence164 KB30 Sep 201301_00
PCB Footprints&Symbols - Transceiver - Eagle28 KB30 Sep 201301_00
PCB Footprints&Symbols - Transceiver - Mentor161 KB30 Sep 201301_00
Development Tools
TitleSizeDateVersion
TDA525x Evaluation Kit User Manual1.3 MB25 Jan 201201_00
TDA525x - Programmer Tool8.4 MB26 Sep 201201_07
TDA525x Evaluation Kit - User Manual (Chinese)(中文)CN1.6 MB25 Jan 201201_00
EN TDA5251
Short Technical Portfolio Overview smartlewis-trx-tda-5340
TDA525x_7255V_AN_CLKDIV TDA5255
RF Design Verification Guidelines TDA5255
TDA525x TDA5255
TDA525x_TDA7255V_Errata Sheet TDA5255
TEW Crystal Recommendation TDA5255
NDK Crystal Recommendation TDA5255
Kyocera Crystal Recommendation TDA5255
AEL Crystal Recommendation TDA5255
Transportation Brochure (24-60V) KP229E3518
MCDS_2013-08-28_23-10-31_MA000218825_PG-TSSOP-38-1.pdf TDA5251
EN TDA5251
EN TDA5251
PCB Footprints&Symbols - Transceiver - Altium smartlewis-trx-tda-5340
PCB Footprints&Symbols - Transceiver - Cadence smartlewis-trx-tda-5340
PCB Footprints&Symbols - Transceiver - Eagle smartlewis-trx-tda-5340
PCB Footprints&Symbols - Transceiver - Mentor smartlewis-trx-tda-5340
TDA525x Evaluation Kit User Manual TDA5255
TDA525x - Programmer Tool TDA5255
CN TDA5255