Data Sheet
FEATURES
Matched pair of multiplying VGAs
Broad frequency range 20 MHz to 2.4 GHz
Continuous magnitude control from +5 dB to −30 dB
Output third-order intercept 24 dBm
Output 1 dB compression point 11 dBm
Output noise floor −148 dBm/Hz
Adjustable modulation bandwidth up to 230 MHz
Fast output power disable
Single-supply voltage 4.75 V to 5.25 V
RF/IF Vector Multiplier
ADL5390
FUNCTIONAL BLOCK DIAGRAM
VPRF
QBBP OBBM
VPS2
INMQ
INPQ
CMRF
INPI
INMI
04954-001
RFOP
RFOM
CMOP
IBBP IBBM
DSOP
APPLICATIONS
PA linearization and predistortion
Amplitude and phase modulation
Variable matched attenuator and/or phase shifter
Cellular base stations
Radio links
Fixed wireless access
Broadband/CATV
RF/IF analog multiplexer
Figure 1.
GENERAL DESCRIPTION
The ADL5390 vector multiplier consists of a matched pair of
broadband variable gain amplifiers whose outputs are summed.
The separate gain controls for each amplifier are linear-in-
magnitude. If the two input RF signals are in quadrature, the
vector multiplier can be configured as a vector modulator or as
a variable attenuator/phase shifter by using the gain control pins
as Cartesian variables. In this case, the output amplitude can be
controlled from a maximum of +5 dB to less than –30 dB, and
the phase can be shifted continuously over the entire 360° range.
Since the signal paths are linear, the original modulation on the
inputs is preserved. If the two signals are independent, then the
vector multiplier can function as a 2:1 multiplexer or can
provide fading from one channel to another.
The ADL5390 operates over a wide frequency range of 20 MHz
to 2400 MHz. For a maximum gain setting on one channel at
380 MHz, the ADL5390 delivers an OP1dB of 11 dBm, an OIP3
of 24 dBm, and an output noise floor of −148 dBm/Hz. The gain
and phase matching between the two VGAs is better than 0.5 dB
and 1°, respectively, over most of the operating range.
The gain control inputs are dc-coupled with a ±500 mV differential
full-scale range centered about a 500 mV common mode. The
maximum modulation bandwidth is 230 MHz, which can be
reduced by adding external capacitors to limit the noise bandwidth
on the control lines.
Both the RF inputs and outputs can be used differentially or
single-ended and must be ac-coupled. The impedance of each
VGA RF input is 250 Ω to ground, and the differential output
impedance is nominally 50 Ω over the operating frequency
range. The DSOP pin allows the output stage to be disabled
quickly to protect subsequent stages from overdrive. The
ADL5390 operates off supply voltages from 4.75 V to 5.25 V
while consuming 135 mA.
The ADL5390 is fabricated on Analog Devices’ proprietary,
high performance 25 GHz SOI complementary bipolar IC
process. It is available in a 24-lead, Pb-free CSP package and
operates over a −40°C to +85°C temperature range. Evaluation
boards are available.
Rev. A
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ADL5390
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
ESD Caution .................................................................................. 5
Pin Configuration and Function Descriptions ............................. 6
Typical Performance Characteristics ............................................. 7
General Structure ........................................................................... 11
Theory of Operation .................................................................. 11
Noise and Distortion .................................................................. 11
Applications Information .............................................................. 12
Data Sheet
Using the ADL5390 .................................................................... 12
RF Input and Matching ............................................................. 12
RF Output and Matching .......................................................... 13
Driving the I-Q Baseband Gain Controls ............................... 13
Interfacing to High Speed DACs .............................................. 14
Generalized Modulator ............................................................. 15
Vector Modulator ....................................................................... 15
Vector Modulator Example—CDMA2000 ............................. 15
Quadrature Modulator .............................................................. 17
RF Multiplexer ............................................................................ 18
Evaluation Board ............................................................................ 19
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 23
REVISION HISTORY
10/2017—Rev. 0 to Rev. A
Changed CP-24-2 to CP-24-10 .................................... Throughout
Updated Outline Dimensions ....................................................... 23
Changes to Ordering Guide .......................................................... 23
10/2004—Revision 0: Initial Version
Rev. A | Page 2 of 23
Data Sheet
SPECIFICATIONS
ADL5390
V
S
= 5 V, T
A
= 25°C, Z
O
= 50 Ω, F
RF
= 380 MHz, single-ended source drive to INPI and INPQ, and INMI and INMQ are ac-coupled to
common, unless otherwise noted. 66.5 Ω termination resistors before ac-coupling capacitors on INPI and INPQ. The specifications refer
to one active channel with the other channel input terminated in 50 Ω. The common-mode level for the gain control inputs is 0.5 V. A
maximum gain setpoint of 1.0 refers to a differential gain control voltage of 0.5 V.
Table 1.
Parameter
OVERALL FUNCTION
Frequency Range
Gain Control Range
GAIN CONTROL INTERFACE (I and Q)
Gain Scaling
Modulation Bandwidth
Second Harmonic Distortion
Third Harmonic Distortion
Step Response
F
RF
= 70 MHz
Maximum Gain
Gain Conformance
Output Noise Floor
Output IP3
Output 1 dB Compression Point
Input 1 dB Compression Point
Gain Flatness
Gain Matching
Phase Matching
Input Impedance
Output Return Loss
F
RF
= 140 MHz
Maximum Gain
Gain Conformance
Output Noise Floor
Output IP3
Output 1 dB Compression Point
Input 1 dB Compression Point
Gain Flatness
Gain Matching
Phase Matching
Input Impedance
Output Return Loss
F
RF
= 380 MHz
Maximum Gain
Gain Conformance
Conditions
Min
20
Relative to maximum gain
QBBP, QBBM, IBBM, IBBP (Pins 4, 5, 14, 15)
500 mV p-p, sinusoidal baseband input single-
ended
500 mV p-p, 1 MHz, sinusoidal baseband input
differential
500 mV p-p, 1 MHz, sinusoidal baseband input
differential
For gain from −15 dB to +5 dB
For gain from +5 dB to −15 dB
Maximum gain setpoint
Over gain setpoint of 0.2 to 1.0
Maximum gain setpoint, no RF input
RF P
IN
= −5 dBm, frequency offset = 20 MHz
F
RF1
= 70 MHz, F
RF2
= 72.5 MHz, maximum gain
setpoint
Maximum gain setpoint
Gain setpoint = 0.1
Over any 60 MHz bandwidth
At maximum gain setpoint
At maximum gain setpoint
INPI, INMI, INMQ, INMP (Pins 20, 21, 22, 23)
RFOP, RFOM (Pins 9, 10) measured through
balun
Maximum gain setpoint
Over gain setpoint of 0.2 to 1.0
Maximum gain setpoint, no RF input
RF P
IN
= −5 dBm, frequency offset = 20 MHz
F
RF1
= 140 MHz, F
RF2
= 142.5 MHz, maximum
gain setpoint
Maximum gain setpoint
Gain setpoint = 0.1
Over any 60 MHz bandwidth
At maximum gain setpoint
At maximum gain setpoint
INPI, INMI, INMQ, INMP (Pins 20, 21, 22, 23)
RFOP, RFOM (Pins 9, 10) measured through
balun
Maximum gain setpoint
Over gain setpoint of 0.2 to 1.0
Rev. A | Page 3 of 23
Typ
Max
2400
Unit
MHz
dB
1/V
MHz
dBc
dBc
ns
ns
dB
dB
dBm/Hz
dBm/Hz
dBm
dBm
dBm
dB
dB
Degrees
Ω||pF
dB
35
3.5
230
45
55
45
47
4.6
0.25
−149
−146
23
10.7
6.7
0.25
0.5
±0.25
250||1
9.7
4.5
0.25
−144
−145
24.4
11
7.1
0.25
0.5
±0.25
250||1
9.6
dB
dB
dBm/Hz
dBm/Hz
dBm
dBm
dBm
dB
dB
Degrees
Ω||pF
dB
4.1
0.25
dB
dB
ADL5390
Parameter
Output Noise Floor
Output IP3
Output 1 dB Compression Point
Input 1 dB Compression Point
Gain Flatness
Gain Matching
Phase Matching
Input Impedance
Output Return Loss
F
RF
= 900 MHz
Maximum Gain
Gain Conformance
Output Noise Floor
Output IP3
Output 1 dB Compression Point
Input 1 dB Compression Point
Gain Flatness
Gain Matching
Phase Matching
Input Impedance
Output Return Loss
F
RF
= 2400 MHz
Maximum Gain
Gain Conformance
Output Noise Floor
Output IP3
Output 1 dB Compression Point
Input 1 dB Compression Point
Gain Flatness
Gain Matching
Phase Matching
Input Impedance
Output Return Loss
POWER SUPPLY
Positive Supply Voltage
Total Supply Current
OUTPUT DISABLE
Disable Threshold
Maximum Attenuation
Enable Response Time
Disable Response Time
Conditions
Maximum gain setpoint, no RF input
RF P
IN
= −5 dBm, frequency offset = 20 MHz
F
RF1
= 380 MHz, F
RF2
= 382.5 MHz, maximum
gain setpoint
Maximum gain setpoint
Gain setpoint = 0.1
Over any 60 MHz bandwidth
At maximum gain setpoint
At maximum gain setpoint
INPI, INMI, INMQ, INMP (Pins 20, 21, 22, 23)
RFOP, RFOM (Pins 9, 10) measured through
balun
Maximum gain setpoint
Over gain setpoint of 0.2 to 1.0
Maximum gain setpoint, no RF input
RF P
IN
= −5 dBm, frequency offset = 20 MHz
F
RF1
= 900 MHz, F
RF2
= 902.5 MHz, maximum
gain setpoint
Maximum gain setpoint
Gain setpoint = 0.1
Over any 60 MHz bandwidth
At maximum gain setpoint
At maximum gain setpoint
INPI, INMI, INMQ, INMP (Pins 20, 21, 22, 23)
RFOP, RFOM (Pins 9, 10) measured through
balun
Maximum gain setpoint
Over gain setpoint of 0.2 to 1.0
Maximum gain setpoint, no RF input
RF P
IN
= −5 dBm, frequency offset = 20 MHz
F
RF1
= 2400 MHz, F
RF2
= 2402.5 MHz, maximum
gain setpoint
Maximum gain setpoint
Gain setpoint = 0.1
Over any 60 MHz bandwidth
At maximum gain setpoint
At maximum gain setpoint
INPI, INMI, INMQ, INMP (Pins 20, 21, 22, 23)
RFOP, RFOM (Pins 9, 10) measured through
balun
VPRF, VPS2 (Pin 1, 18, 6); RFOP, RFOM (Pins 9, 10)
4.75
Includes load current
DSOP (Pin 13)
DSOP = 5 V
Delay following high-to-low transition until
device meets full specifications
Delay following low-to-high transition until
device produces full attenuation
Min
Typ
−147.5
−146
24.2
11.3
8.3
0.25
0.5
±0.5
200||1
8.5
Data Sheet
Max
Unit
dBm/Hz
dBm/Hz
dBm
dBm
dBm
dB
dB
Degrees
Ω||pF
dB
4.5
0.4
−149.5
−148
23.3
11.5
8.5
0.25
0.6
±1
180||0.6
6.8
dB
dB
dBm/Hz
dBm/Hz
dBm
dBm
dBm
dB
dB
Degrees
Ω||pF
dB
7.0
0.5
−147
−144
18.7
9.6
4.3
0.25
0.8
±2.5
140||0.5
13.5
dB
dB
dBm/Hz
dBm/Hz
dBm
dBm
dBm
dB
dB
Degrees
Ω||pF
dB
5
135
2.5
40
15
10
5.25
V
mA
V
dB
ns
ns
Rev. A | Page 4 of 23
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameters
Supply Voltage VPRF, VPS2
DSOP
IBBP, IBBM, QBBP, QBBM
RFOP, RFOM
RF Input Power at Maximum Gain
(INPI or INPQ, Single-Ended Drive)
Equivalent Voltage
Internal Power Dissipation
θ
JA
(With Pad Soldered to Board)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Rating
5.5 V
5.5 V
2.5 V
5.5 V
10 dBm for 50 Ω
2.0 V p-p
825 mW
59°C/W
125°C
−40°C to +85°C
−65°C to +150°C
ADL5390
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION
Rev. A | Page 5 of 23
