Wireless transmission uses a range of different modulation schemes, and the chip accepts data as In-phase (I Data) and Quadrature (Q Data) words. The transmit path applies the data to a pair of on-chip DACs to convert it into two analog signals. The user can choose to bypass the DACs and inject analog signals directly into the device or monitor the DAC outputs. The next operation involves filtering the signal. The Low Pass filter is programmed by the user to one of 16 different bandwidths ranging from 0.75 MHz to 14 MHz. Programmable baseband gain stage that can be adjusted to give up to 31dB of gain in 1dB increments. The signal is then mixed to directly give the required modulated RF frequency output. The TX PLL synthesizer multiplies up the input PLL clock by a programmable ratio and generates a stable frequency with a tight accuracy. The RF gain stage (programmable, of course) provides the final signal boost that is output from the FPRF device.