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AT-259TR 반도체 회로 부품 판매점

Voltage Variable Absorptive Attenuator DC - 2 GHz



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Tyco Electronics
AT-259TR 데이터시트, 핀배열, 회로
Voltage Variable Absorptive Attenuator
DC - 2 GHz
Features
q Attenuation: 12 dB at 1 GHz
q Low Intermodulation Products
q Low DC Power Consumption: 50 µW
q Single Voltage Control 0 to -4 Volts
q Nanosecond Switching Speed
q Temperature Range: -40˚C to + 85˚C
q Low Cost SOT/143 Plastic Package
q Tape and Reel Packaging Available1
SOT-143
AT-259
V 2.00
Description
M/A-COM’s AT-259 is a GaAs MMIC voltage variable absorp-
tive attenuator in a low cost SOT/143 4-Lead surface mount
plastic package. The AT-259 is ideally suited for use where
attenuation fine tuning, fast switching and very low power
consumption are required. Typical applications include radio,
cellular, GPS equipment and other Automatic Gain/Level
Control circuits.
The AT-259 is fabricated with a monolithic GaAs MMIC using
a mature 1 micron process. The process features full chip pas-
sivation for increased performance and reliability.
Ordering Information
Part Number
AT-259 PIN
AT-259TR
Electrical Specifications, TA = +25°C
AT-259RTR
Parameter
Insertion Loss
Flatness
(Peak to Peak)
VSWR
Test Conditions2
DC – 2.0 GHz
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
5 dB Attenuation
10 dB Attenuation
15 dB Attenuation
Unit
dB
dB
dB
dB
dB
dB
dB
Trise, Tfall
Ton, Toff
Transients
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
nS
nS
mV
Power
Handling
Linear Operation
Absolute Max.Input Power
dBm
dBm
Measured Relative
0.05 GHz
IP2 to Input Power
0.5 – 2.0 GHz
dBm
(For two-tone Input Power Up to +5 dBm)
Measured Relative
0.05 GHz
dBm
IP3 to Input Power
0.5 – 2.0 GHz
dBm
(For two-tone Input Power Up to +5 dBm)
1. Refer to “Tape and Reel Packaging”Section, or contact factory.
2. All measurements at 1 GHz in a 50system, unless otherwise specified.A control voltage 0 to -4 volts @ 20 µA typ.
3. For levels above 6 dB attenuation. For levels below 6 dB, the minimum specification numbers apply.
Package
SOT 4-Lead Plastic Package
Forward Tape & Reel
Reverse Tape & Reel
Min.
18
18.5
Typ.
2.9
3.0
3.2
3.4
± 0.2
± 2.3
± 7.0
2.1:1
3
5
10
34
47
31(3)
36(3)
Max
3.1
3.2
3.5
3.8
± 0.4
± 2.5
± 7.5
13
21


AT-259TR 데이터시트, 핀배열, 회로
Voltage Variable Absorptive Attenuator
Absolute Maximum Ratings1
Parameter
Absolute Maximum
Max. Input Power
Control Voltage
Operating Temperature
Storage Temperature
+21 dBm
+5 V, -8.5 V
-40°C to +85°C
-65°C to +150°C
1.Operation of this device above any one of these parameters may cause per-
manent damage
Pin Configuration
Pin No.
1
2
3
4
Description
GND
A
RF2
RF1
Typical Performance
Functional Schematic
4
3
12
AT-259
V 2.00




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Voltage Variable Absorptive Attenuator DC - 2 GHz - Tyco Electronics