24 GHz VCO and PGA
with 2-Channel PA Output
ADF5901
Data Sheet
Industrial sensors
FEATURES
Precision instrumentation
Tank level sensors
Smart sensors
Door opening
Energy saving
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
Commercial sensors: object detection and tracking
Cars, boats, aircraft, and UAVs (drones): collision avoidance
Intelligent transportation systems: intelligent traffic
monitoring and control
N divider output (frequency discriminator)
24 GHz local oscillator (LO) output buffer
250 MHz signal bandwidth
Power control detector
Auxiliary 8-bit ADC
Surveillance and security
5°C temperature sensor
GENERAL DESCRIPTION
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
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.
APPLICATIONS
Automotive radars
Industrial radars
Microwave radar sensors
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.
FUNCTIONAL BLOCK DIAGRAM
TX_AHI RF_AHI
DVDD
AHI
VCO_AHI
VREG
C1
C2
R
SET
REGULATOR
R-DIVIDER
REFERENCE
REF
IN
ADF5901
MUXOUT
ADC
VCO
CAL
TX
TX
1
OUT
2
OUT
÷2
÷2
N-DIVIDER
ADC
CLK
DATA
LE
ATEST
TEMPERATURE
SENSOR
32-BIT
DATA
REGISTER
DOUT
ADC
CE
V
AUX
AUX
GND
LO
TUNE
OUT
Figure 1.
Rev. A
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