There is also a manual mode where a limited number of settings can be made directly through selected pins.
The full set of configuration functions are handled by an on-chip serial peripheral interface (SPI). Data rates up to 50kbps Manchester coded for ASK and 70kbps Manchester coded for FSK can be maintained while still satisfying regulatory emission-bandwidth standards. FSK modulation is accomplished by changing the coefficients of the high-resolution fractional-N synthesizer, so FSK deviation is extremely accurate. ASK amplitude shaping is available to reduce the width of the transmission spectrum. To maintain a good output power match across a broad range of frequencies, the MAX7060 also contains a programmable matching capacitor connected in parallel with the power amplifier (PA) output.ĪSK modulation is accomplished by switching the PA on and off, so excellent modulation (on/off) ratios are achieved. At the minimum specified battery voltage of 2.1V, the RF output power-control range is between +10dBm and -14dBm. The RF output power is user-controlled between +14dBm and -14dBm, with a 5V supply or with battery voltages as low as 3.2V. For example, the MAX7060 can be tuned from 285MHz to 420MHz with a 15MHz crystal. This device incorporates a fully integrated fractional-N synthesizer, which allows the user to set the RF operating frequency to a large fraction of the 280MHz to 450MHz frequency range with a single crystal.
The board is fully customizable by software without any hardware changes, providing options for GPS or IEEE 1588 Synchronization, and MIMO configurations.Ĭreate a design and simulate using EE-Sim ® tools: The MAX7060 frequency and power-programmable ASK/FSK transmitter operates at 280MHz to 450MHz frequencies. This AD-FMCOMMS2-EBZ board with AD9361 transceiver is a 2 x 2 RF configuration. The chip supports channel bandwidths from less than 200 kHz to 56 MHz by changing sample rate, digital filters, and decimation, all programmable within the AD9361 itself.
The AD-FMCOMMS2-EBZ board will come specifically tuned and optimized to 2.4 GHz and due to the limitations of the on-board discrete external components, it may exhibit diminished RF performance on some other programmed configurations. The AD9361 chip operates in the 70 MHz to 6 GHz range, covering most licensed and unlicensed bands. The device combines an RF front end with a flexible mixed-signal baseband section and integrated frequency synthesizers, simplifying design-in by providing a configurable digital interface to a processor or FPGA. Its programmability and wideband capability make it ideal for a broad range of transceiver applications. The AD-FMCOMMS2-EBZ is a high-speed analog module designed to showcase the AD9361, a high performance, highly integrated RF transceiver intended for use in RF applications, such as 3G and 4G base station and test equipment applications, and software defined radios.