F2250NLGK
Voltage Variable RF Attenuator
Datasheet
50MHz to 6000MHz
G
ENERAL
D
ESCRIPTION
The F2250 is a low insertion loss
Voltage Variable
RF
Attenuator
(VVA) designed for a multitude of wireless
and other RF applications. This device covers a broad
frequency range from 50MHz to 6000MHz. In addition
to providing low insertion loss, the F2250 provides
excellent linearity performance over its entire voltage
control and attenuation range.
The F2250 uses a single positive supply voltage of
3.15V to 5.25V. Other features include the V
MODE
pin
allowing either positive or negative voltage control
slope vs attenuation and multi-directional operation
meaning the RF input can be applied to either RF1 or
RF2 pins. Control voltage ranges from 0V to 3.6V
using either positive or negative control voltage slope.
F
EATURES
Low Insertion Loss: 1.4dB @ 2000MHz
Typical / Min IIP3: 65dBm / 47dBm
Typical / Min IIP2: 95dBm / 87dBm
33.6dB Attenuation Range
Bi-directional RF ports
+34.4dBm Input P1dB compression
V
MODE
pin allows either positive or negative
attenuation control response
Linear-in-dB attenuation characteristic
Supply voltage: 3.15V to 5.25V
V
CTRL
range: 0V to 3.6V using 5V supply
+105°C max operating temperature
3mm x 3mm, 16-pin QFN package
C
OMPETITIVE
A
DVANTAGE
F2250 provides extremely low insertion loss and superb
IP3, IP2, Return Loss and Slope Linearity across the
control range. Comparing to the previous state-of-the-
art for silicon VVAs this device is better as follows:
Insertion Loss @ 2000MHz: 1.4dB vs. 2.8dB
Insertion Loss @ 6000MHz: 2.7dB vs. 7dB
Maximum Attenuation Slope: 33dB/Volt vs. 53dB/Volt
Minimum Return Loss up to 6000MHz: 12.5dB vs. 7dB
Minimum Output IP3: 31dBm vs. 15dBm
Minimum Input IP2: 87dBm vs. 80dBm
Maximum Operating Temperature: +105°C vs. +85°C
D
EVICE
B
LOCK
D
IAGRAM
V
MODE
V
CTRL
V
DD
Control
RF1
RF2
O
RDERING
I
NFORMATION
0.9 mm height
package
Tape &
Reel
A
PPLICATIONS
Base Station 2G, 3G, 4G
Portable Wireless
Repeaters and E911 systems
Digital Pre-Distortion
Point to Point Infrastructure
Public Safety Infrastructure
WIMAX Receivers and Transmitters
Military Systems, JTRS radios
RFID handheld and portable readers
Cable Infrastructure
Wireless LAN
Test / ATE Equipment
F2250NLGK8
RF Product Line
Green
Temp Range
P
ART
# M
ATRIX
Part#
RF Freq
Range (MHz)
Insertion Loss (dB)
IIP3
(dBm)
Pinout
Compatibility
F2250
F2255
F2258
50 - 6000
1 - 3000
50 - 6000
1.4 (at 2GHz)
1.1 (at 500MHz)
1.4 (at 2GHz)
+65
+60
+65
RFMD
Hittite
Voltage Variable RF Attenuator
1
REV 4, January 2017
F2250NLGK
Voltage Variable RF Attenuator
Datasheet
50MHz to 6000MHz
A
BSOLUTE
M
AXIMUM
R
ATINGS
Parameter / Condition
V
DD
to GND
V
MODE
to GND
V
CTRL
to GND
V
DD
= 0V to 5.25V
RF1, RF2 to GND
RF1 or RF2 Input Power applied for 24 hours maximum
(V
DD
applied @ 2GHz and +85°C)
RF1 or RF2 Continuous Operating Power
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (soldering, 10s)
ESD Voltage– HBM (Per ESD STM5.1-2007)
ESD Voltage – CDM (Per ESD STM5.3.1-2009)
Symbol
V
DD
V
MODE
V
CTRL
V
RF
P
MAX24
P
MAX_OP
T
JMAX
T
ST
T
LEAD
V
ESDHBM
V
ESDCDM
Min
-0.3
-0.3
-0.3
-0.3
Max
5.5
Minimum ( V
DD
, 3.9 )
Minimum ( V
DD
, 4.0 )
0.3
30
See Figure 1
+150
+150
+260
Class 1C
Class C3
Units
V
V
V
V
dBm
dBm
°C
°C
°C
-65
F
IGURE
1: M
AXIMUM
RF I
NPUT
P
OWER VS
. RF F
REQUENCY
Stresses above those listed above may cause permanent damage to the device. Functional operation of the device at
these or any other conditions above those indicated in the operational section of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
P
ACKAGE
T
HERMAL AND
M
OISTURE
C
HARACTERISTICS
Θ
JA
(Junction – Ambient)
Θ
JC
(Junction – Case) The Case is defined as the exposed paddle
Moisture Sensitivity Rating (Per J-STD-020)
80.6°C/W
5.1°C/W
MSL 1
Voltage Variable RF Attenuator
2
REV 4, January 2017
F2250NLGK
Voltage Variable RF Attenuator
Datasheet
50MHz to 6000MHz
F2250 O
PERATING
C
ONDITIONS
Parameter
Operating Freq Range
Supply Voltage
V
MODE
Logic
V
CTRL
Range
Supply Current
Logic Current
I
CTRL
Current
RF Operating Power
3
Symbol
F
RF
V
DD
V
IH
V
IL
V
CTRL
I
DD
I
MODE
I
CTRL
P
MAX
,
CW
Condition
V
DD
> 3.9V
V
DD
= 3.15V to 3.9V
V
DD
= 3.9V to 5.25V
V
DD
= 3.15V to 3.9V
Min
50
3.15
1.17
1.17
0
0
0
Typ
Max
6000
5.25
3.6
2
V
DD
-0.3
0.63
3.6
V
DD
-0.3
Units
MHz
V
V
V
mA
μA
μA
dBm
Ω
0.5
1
-1
-1
1.17
2
38
14
See
Figure 1
50
50
Exposed Paddle
Temperature
-40
+105
RF1 Port Impedance
RF2 Port Impedance
Operating Temperature
Range
Z
RF1
Z
RF2
T
CASE
°C
Operating Conditions Notes:
1 – Items in min/max columns in
bold italics
are Guaranteed by Test.
2 – Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization.
3 – Refer to the Maximum
Operating
RF Input Power vs. RF Frequency curves in Figure 1.
Voltage Variable RF Attenuator
3
REV 4, January 2017
F2250NLGK
Voltage Variable RF Attenuator
Datasheet
50MHz to 6000MHz
F2250 S
PECIFICATION
Refer to EVKit / Applications Circuit, V
DD
= +3.3V, T
C
= +25°C, signals applied to RF1 input, F
RF
= 2000MHz,
minimum attenuation, P
IN
= 0dBm for small signal parameters, +20dBm for single tone linearity tests, +20dBm per
tone for two tone tests, two tone delta frequency = 50MHz, PCB board traces and connector losses are de-embedded
unless otherwise noted. Refer to Typical Operating Curves for performance over entire frequency band.
Parameter
Insertion Loss, IL
(Minimum Attenuation)
Maximum Attenuation
Insertion Phase Δ
Symbol
A
MIN
A
MAX
Φ
ΔMAX
Φ
ΔMID
Comment
2GHz
3GHz
6GHz
Min
Typ
1.4
1.6
2.6
35
27
Max
1.9
3.1
1
Units
dB
dB
deg
34
At 36dB attenuation
relative to Insertion Loss
At 18dB attenuation
relative to Insertion Loss
50MHz
700MHz
2000MHz
6000MHz
50MHz
4
700MHz
2000MHz
6000MHz
4
2
10
34.4
16
17
17
15
16
15
16
13
65
47
35
95
87
90
54
15
dBm
dB
Input 1dB Compression
3
P1dB
S11
Minimum RF1 Return Loss
over control voltage range
Minimum RF2 Return Loss
over control voltage range
Input IP3
Input IP3 over Attenuation
Minimum Output IP3
Input IP2
Minimum Input IP2
Input IH2
Input IH3
Settling Time
S22
IIP3
IIP3
ATTEN
OIP3
MIN
IIP2
IIP2
MIN
HD2
HD3
T
SETTL0.1dB
dB
All attenuation settings
Maximum attenuation
P
IN
+ IM2
dBC
,
IM2 term is F1+F2
All attenuation settings
P
IN
+ H2
dBc
P
IN
+ (H3
dBc
/2)
Any 1dB step in the 0dB
to 33dB control range
50% V
CTRL
to RF settled to
within ± 0.1dB
44
dBm
dBm
dBm
dBm
dBm
µsec
Specification Notes:
1 – Items in min/max columns in
bold italics
are Guaranteed by Test.
2 – Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization.
3 – The input 1dB compression point is a linearity figure of merit. Refer to Absolute Maximum Ratings section.
along with Figure 1 for the maximum RF input power vs. RF frequency.
4 – Set blocking capacitors C7 & C8 to 0.01uF to achieve best return loss performance at 50MHz.
Voltage Variable RF Attenuator
4
REV 4, January 2017
F2250NLGK
Voltage Variable RF Attenuator
Datasheet
50MHz to 6000MHz
T
YPICAL
O
PERATING
C
ONDITIONS
Unless otherwise noted, the following conditions apply:
V
DD
= +3.3V or +5.0V
T
C
= +25ºC
V
MODE
= 0V
RF trace and connector losses are de-embedded for S-parameters
Pin = 0dBm for all small signal tests
Pin = +20dBm for single tone linearity tests (RF1 port driven)
Pin = +20dBm/tone for two tone linearity tests (RF1 port driven)
Two tone frequency spacing = 50MHz
Voltage Variable RF Attenuator
5
REV 4, January 2017
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