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SI4012-A0-GT Datasheet(PDF) 10 Page - Silicon Laboratories |
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SI4012-A0-GT Datasheet(HTML) 10 Page - Silicon Laboratories |
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10 / 16 page  Si4012 10 Rev 0.1 2. Functional Description Figure 1. Si4012 Functional Block Diagram The Si4012 is a crystal wireless transmitter with continuous frequency tuning over the frequency range of 27–960 MHz. The wide operating voltage range of 1.8–3.6 V and low current consumption makes the Si4012 an ideal solution for battery powered applications. The RF carrier is generated by Silicon Labs patented pending crystal-less oscillator technology. The device achieves a frequency accuracy of ±150 ppm over the commercial temperature range of 0 to 70 °C and ±250 ppm over the industrial temperature range of –40 to +85 °C. The Si4012's PA output power can be configured between –13 to +10 dBm with 0.25 dB of resolution. The PA incorporates automatic ramp-up and ramp- down control to reduce unwanted spectral spreading. The Si4012 is designed to work with a microcontroller to allow custom configuration of the transmitter for optimum performance. Voltage regulators are integrated on-chip which allows for a wide operating supply voltage range of 1.8 to 3.6 V. A standard 2-pin SMB (I2C) bus is used to communicate with an external microcontroller. Si4012 GPIO0/XTAL LED SDA SCL SDN nIRQ LCOSC PA DIVIDER XTAL OSC AUTO TUNE FSK OOK LPOSC LDO POR BANDGAP VA VD TXP TXM VDD GND SLP TMR RF ANALOG CORE ANTENNA TUNE MODULATOR SMBus INTERFACE DIGITAL LOGIC TX 256 BYTE DATA FIFO REGISTER BANK DIGITAL CONTROLLER BATTERY MONITOR |
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