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Sub-GHz transceiver daughterboard based on SPIRIT1 with single component for balun and filter: BALF-SPI-01D3
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The STEVAL-IKR002V4B evaluation daughterboard is based on the SPIRIT1, a sub-GHz low power, low data rate transceiver suitable for ISM bands and wireless M-BUS. The board is equipped with external balun, matching and filter in a single BALF-SPI-01D3 device which optimizes size, RF performances and number of external RF components (from 16 SMD passive components to just 1).

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Data Brief

Key Features

  • SPIRIT1 low power, sub-GHz transceiver in a standalone RF module tuned for the 868/915 MHz bands
  • External balun + matching + filter in a single component: BALF-SPI-01D3
  • Suitable for wireless M-BUS systems
  • Associated SPIRIT1 development kit includes documentation, firmware for STM32L and GUI
  • Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOK, and ASK
  • Air data rate from 1 to 500 kbps
  • Very low power consumption (9 mA RX and 21 mA TX at +11 dBm)
  • Excellent performance of receiver sensitivity (up to -120 dBm)
  • Low duty cycle RX/TX operation mode
  • Automatic acknowledgment, retransmission, and timeout protocol engine
  • AES 128-bit encryption co-processor
  • SPI interface for microcontroller
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB2176: SPIRIT1 - low data rate transceiver - 868 MHz - daughterboard integrated balun
2.0 246 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-IKR002V4B gerber files
149 KB

Bill of Materials

Description Version Size
50 KB

Schematic Pack

Description Version Size
STEVAL-IKR002V4B schematics
83 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-IKR002V4BActiveSPIRIT1; BALF-SPI-01D3Buy Direct75.95Distributor reported inventory date: 2014-10-21
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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