24 GHz VCO and PGA

with 2-Channel PA Output

Data Sheet

ADF5901

Rev. A

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FEATURES

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

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

GENERAL DESCRIPTION

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.

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

GND

TX_AHI

ATEST

RF_AHI

AHI

DVDD

VREG

C1

C2

MUXOUT

AUX

AUX

VCO_AHI

N-DIVIDER

VCO

CAL

R-DIVIDER

TEMPERATURE

SENSOR

ADC

32-BIT

DATA

REGISTER

DOUT

LE

DATA

CLK

CE

÷2

÷2

REFERENCE

REGULATOR

ADC

ADC

ADF5901