ADF5902

RECOMMENDED FOR NEW DESIGNS

24 GHz, ISM Band, Multichannel FMCW Radar Transmitter

Analog Devices ADF5902 Product Info

10 February 2026 8

Features

24 GHz to 24.25 GHz VCO (industrial, scientific, and medical (ISM) radio band)
2-channel 24 GHz power amplifier with 8 dBm output
Single-ended outputs
2-channel muxed outputs with mute function
Programmable output power
LO output buffer
RF frequency range: 24 GHz to 24.25 GHz
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 110 MHz
Normalized phase noise floor of −222 dBc/Hz
Programmable charge pump currents
±5°C temperature sensor
4-wire SPI
ESD performance
- HBM: 2000 V
- CDM: 250 V
Qualified for automotive applications

Part details & applications

The ADF5902 is a 24 GHz transmitter (Tx) monolithic microwave integrated circuit (MMIC) with an on-chip, 24 GHz voltage controlled oscillator (VCO). The VCO features a fractional-N frequency synthesizer with waveform generation capability with programmable grid array (PGA) and dual transmitter channels for radar systems. The on-chip, 24 GHz VCO generates the 24 GHz 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 comes in a compact, 32-lead, 5 mm × 5 mm LFCSP package.

Applications

Automotive radars
Industrial radars
Microwave radar sensors

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