The ADF5901 is a 24 GHz Tx monolithic microwave integrated circuit (MMIC) with an on-chip, 24 GHz VCO with PGA and dual Tx channels for radar systems. The on-chip, 24 GHz VCO generates the 24 GHz signal for the two Tx channels and the LO output. Each Tx channel contains a power control circuit. There is also an on-chip temperature sensor. Control of all the on-chip registers is through a simple 4-wire interface. The ADF5901 comes in a compact 32-lead, 5 mm × 5 mm LFCSP package. Applications * Automotive radars * Industrial radars * Microwave radar sensors * Industrial sensors * Precision instrumentation * Tank level sensors * Smart sensors * Door opening * Energy saving * Commercial sensors: object detection and tracking * Cars, boats, aircraft, and UAVs (drones): collision avoidance * Intelligent transportation systems: intelligent traffic monitoring and control * Surveillance and security * 24 GHz to 24.25 GHz voltage controlled oscillator (VCO) * 2-channel 24 GHz power amplifier (PA) with 8 dBm output * Single-ended outputs * 2-channel muxed outputs with mute function * Programmable output power * N divider output (frequency discriminator) * 24 GHz local oscillator (LO) output buffer * 250 MHz signal bandwidth * Power control detector * Auxiliary 8-bit ADC * ±5°C temperature sensor * 4-wire serial peripheral interface (SPI) * Electrostatic discharge (ESD) performance * Human body model (HBM): 2000 V * Charged device model (CDM): 250 V * Qualified for automotive applications