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.
Features
- 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
Applications
- Automotive radars
- Industrial radars
- Microwave radar sensors
Block Diagram
Pin Configuration
Evaluation Boards
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Analog-to-digital converter (ADC) drivers that evaluate the performance of amplifiers.