Analog Devices Inc. ADF5902 24GHz Radar Transmitter

Analog Devices ADF5902 24GHz Radar Transmitter is a Monolithic Microwave Integrated Circuit (MMIC) with an on-chip, 24GHz voltage Controlled Oscillator (VCO). The VCO features a fractional N-frequency synthesizer with waveform generation capability, a programmable grid array (PGA), and dual transmitter channels for radar systems. The on-chip VCO generates the 24GHz signal for the two transmitter channels and the local oscillator (LO) output. Each transmitter 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 serial peripheral interface (SPI). 

The ADF5902 is offered in a compact, 32-lead, 5mm × 5mm LFCSP package.


  • 24GHz to 24.25GHz VCO (Industrial, Scientific, and Medical (ISM) radio band)
  • 2-channel 24GHz power amplifier with 8dBm output
  • Single-ended outputs
  • 2-channel muxed outputs with mute function
  • Programmable output power
  • LO output buffer
  • RF frequency range of 24GHz to 24.25GHz
  • Power control detector
  • Auxiliary 8-bit ADC
  • High and low-speed FMCW ramp generation
  • 25-bit fixed modulus allows subhertz frequency resolution
  • PFD frequencies up to 110MHz
  • Normalized phase noise floor of -222dBc/Hz
  • Programmable charge pump currents
  • ±5°C temperature sensor
  • 4-wire SPI
  • ESD performance
    • HBM: 2000V
    • CDM: 250V
  • Qualified for automotive applications


  • Automotive radars
  • Industrial radars
  • Microwave radar sensors

Block Diagram

Block Diagram - Analog Devices Inc. ADF5902 24GHz Radar Transmitter

Pin Configuration

Mechanical Drawing - Analog Devices Inc. ADF5902 24GHz Radar Transmitter
Publicado: 2019-01-25 | Actualizado: 2023-07-31