The ADF9010 is a fully integrated RF Tx modulator and Rx analog baseband front end that operates in the frequency range from 840 MHz to 960 MHz. The receive path consists of a fully differential I/Q baseband PGA, low-pass filter, and general signal conditioning before connecting to an Rx ADC for baseband conversion. The Rx LPF gain ranges from 3 dB to 24 dB, programmable in 3 dB steps. The Rx LPF features four programmable modes with cutoff frequencies of 330 kHz, 880 kHz, and 1.76 MHz, or the filter can be bypassed if necessary.The transmit path consists of a fully integrated differential Tx direct I/Q upconverter with a high linearity PA driver amplifier. It converts a baseband I/Q signal to an RF carrier-based signal between 840 MHz and 960 MHz. The highly linear transmit signal path ensures low output distortion.Complete local oscillator (LO) signal generation is integrated on chip, including the integer-N synthesizer and VCO, which generate the required I and Q signals for transmit I/Q upconversion. The LO signal is also available at the output to drive an external RF demodulator. Control of all the on-chip registers is via a simple 3-wire serial interface. The device operates with a power supply ranging from 3.15 V to 3.45 V and can be powered down when not in use.APPLICATIONS900 MHz RFID readersUnlicensed band 900 MHz applications