SI4010-B1-GS

RF Transmitter Overview

The SI4010-B1-GS is a fully integrated, crystal-less CMOS System-on-Chip (SoC) RF transmitter from Silicon Labs' EZRadio series. It operates within the sub-1 GHz ISM frequency bands, specifically covering 27 MHz to 960 MHz. The device features an embedded CIP-51 8051 microcontroller with 4 kB RAM and 8 kB OTP memory. It supports FSK and OOK modulation protocols with a maximum data rate of 100 kbps. The IC delivers up to +10 dBm output power while consuming less than 20 mA during transmission. It functions on a supply voltage range of 1.8 V to 3.6 V, with standby current below 10 nA. The component is housed in a 14-pin SOIC package.

RF Transmitter Feature Summary

• Integrates a crystal-less architecture with automatic antenna tuning for optimized transmission efficiency without external oscillators.
• Includes an embedded 8051-compatible microcontroller with non-volatile memory for standalone wireless control logic.
• Features ultra-low power consumption with capacitive touch wake-up GPIO functionality to extend battery life.

RF Transmitter Applications

• Garage door openers
• Remote Keyless Entry (RKE) systems
• Security alarm transmitters

RF Transmitter Procurement Notes

Verify availability status carefully as this specific part number may be obsolete or discontinued. Confirm if direct substitutes are required for new designs. Ensure the selected replacement maintains compatibility with existing firmware and hardware interfaces. Check manufacturer documentation for lifecycle notifications and recommended alternative components before finalizing procurement plans.

RF Transmitter Selection Notes

Select this component for applications requiring a low-cost, single-chip solution for unidirectional wireless links. It is suitable for battery-powered devices where minimizing external components and reducing board space are critical priorities. The integrated MCU allows for complex protocol handling without additional processors.

RF Transmitter Part Context

The SI4010 belongs to the EZRadio family of wireless ICs designed for simple, reliable communication. It pairs effectively with Silicon Labs' Si431x receiver series to form complete sub-GHz link solutions. This integration helps reduce overall system bill-of-materials costs compared to discrete RF designs.

RF Transmitter Replacement Considerations

Direct substitute part numbers include SI4010-C2-GS and SI4010-C2M0UGTR. Verify pinout and software compatibility when migrating between these variants.

RF Transmitter FAQ

Does the SI4010 require an external crystal oscillator?

No, the SI4010 utilizes a patented crystal-less architecture that eliminates the need for an external crystal oscillator.

What is the standby current consumption of the SI4010?

The device features a standby current of less than 10 nA, which helps optimize battery life in remote control applications.