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PDF IDTF2255NLGK Data sheet ( Hoja de datos )

Número de pieza IDTF2255NLGK
Descripción Voltage Variable RF Attenuator
Fabricantes Integrated Device Technology 
Logotipo Integrated Device Technology Logotipo



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No Preview Available ! IDTF2255NLGK Hoja de datos, Descripción, Manual

Voltage Variable RF Attenuator
GENERAL DESCRIPTION
The IDTF2255 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 1MHz to 3000MHz. In
addition to providing low insertion loss, the IDTF2255
provides excellent linearity performance over its entire
voltage control and attenuation range.
The F2255 uses a single positive supply voltage of
3.15V to 5.25V. Other features include the VMODE 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.
COMPETITIVE ADVANTAGE
IDTF2255 provides extremely low insertion loss and
superb IP3, IP2, Return Loss and Slope Linearity across
the control range. Comparing to competitive VVAs this
device is better as follows:
Operation down to 1MHz
Insertion Loss @ 500MHz: 1.1dB
Maximum Attenuation Slope: 33dB/Volt
Minimum Output IP3: 35dBm
Minimum Input IP2: 74dBm
High Operating Temperature: +105°C
APPLICATIONS
Base Station 2G, 3G, 4G,
Portable Wireless
Repeaters and E911 systems
Digital Pre-Distortion
Point to Point Infrastructure
Public Safety Infrastructure
Satellite Receivers and Modems
WIMAX Receivers and Transmitters
Military Radios covering HF, VHF, UHF
RFID handheld and portable readers
Cable Infrastructure
Wireless LAN
Test / ATE Equipment
IDTF2255NLGK
Datasheet
1MHz to 3000MHz
FEATURES
Low Insertion Loss: 1.1dB @ 500MHz
Typical / Min IIP3: 60dBm / 46dBm
Typical / Min IIP2: 98dBm / 74dBm
33dB Attenuation Range
Bi-directional RF ports
+36dBm Input P1dB compression
VMODE pin allows either positive or negative
control response
Linear-in-dB attenuation characteristic
Supply voltage: 3.15V to 5.25V
VCTRL range: 0V to 3.6V using 5V supply
+105°C max operating temperature
3x3, 16-pin QFN package
DEVICE BLOCK DIAGRAM
ORDERING INFORMATION
Omit IDT
prefix
0.9 mm height
package
Tape &
Reel
IDTF2255NLGK8
RF product Line
Green
PART# MATRIX
Part#
F2250
F2255
F2258
RF Freq Range
(MHz)
50 - 6000
1 - 3000
50 - 6000
Insertion Loss
(dB)
1.4 (at 2GHz)
1.1 (at 500MHz)
1.4 (at 2GHz)
IIP3
(dBm)
+65
+60
+65
Pinout
Compatibility
RFMD
Hittite
Voltage Variable RF Attenuator
1
REV O, July 2015

1 page




IDTF2255NLGK pdf
Voltage Variable RF Attenuator
TYPICAL OPERATING CURVES
IDTF2255NLGK
Datasheet
1MHz to 3000MHz
Unless otherwise noted, the following conditions apply:
VDD = +3.3V or +5.0V
TC = +25ºC
VMODE = 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 = 80MHz
Voltage Variable RF Attenuator
5
REV O, July 2015

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IDTF2255NLGK arduino
IDTF2255NLGK
Datasheet
Voltage Variable RF Attenuator
1MHz to 3000MHz
TYPICAL OPERATING CONDITIONS [S2P @ LOW FREQUENCY, GROUP DELAY] (-6-)
Min. & Max. Attenuation vs. Low Frequency
0
-5
-10
-15 0.0V
-20 2.8V
-25
-30
-35
-40
-45
0
10 20 30 40 50 60 70 80 90 100
Frequency (MHz)
Low-Frequency Attenuation vs. VCTRL
0
25C
-5
-10
-15
-20
-25
-30
-35
-40
-45
0.0 0.4 0.8 1.2 1.6 2.0
VCTRL (V)
0.5MHz
1.0MHz
3.0MHz
7.0MHz
10.0MHz
50.0MHz
100.0MHz
2.4 2.8
Low-Frequency RF1 Return Loss vs. VCTRL
0
0.5MHz
-5 1.0MHz
3.0MHz
-10
7.0MHz
10.0MHz
-15
50.0MHz
100.0MHz
-20
-25
-30
-35
-40
0.0 0.4 0.8 1.2 1.6 2.0 2.4
VCTRL (V)
2.8
Low-Frequency RF2 Return Loss vs. VCTRL
0
0.5MHz
-5 1.0MHz
3.0MHz
-10
7.0MHz
10.0MHz
-15
50.0MHz
100.0MHz
-20
-25
-30
-35
-40
0.0 0.4 0.8 1.2 1.6 2.0 2.4
VCTRL (V)
2.8
Group Delay vs. Frequency
200
150
100
50
-40C / 0.8V
-40C / 1.8V
25C / 0.8V
25C / 1.8V
105C / 0.8V
105C / 1.8V
0
-50
-100
0
500 1000 1500 2000
Frequency (MHz)
2500
3000
Voltage Variable RF Attenuator
11
REV O, July 2015

11 Page







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