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參數資料
| 型號： | AT-255TR |
| 英文描述： | 3Volt Voltage Variable Attenuator 25 dB, DC - 2.5 GHz |
| 中文描述： | 3Volt電壓可變衰減器25分貝，直流- 2.5吉赫 |
| 文件頁數： | 1/2頁 |
| 文件大?。?/td> | 32K |
| 代理商： | AT-255TR |
North America:
Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Specifications subject to change without notice.
Visit www.macom.com for additional data sheets and product information.
V 4.0
Features
Single Voltage Control 0 to -3 Volts
25 dB Attenuation Range at 0.9 GHz
Low DC Power Consumption
Low Cost SOT-25 Plastic Package
Tape and Reel Packaging Available
SOT-25
Electrical Specifications: T
A
= +25°C
1
=
Parameter
Insertion Loss
Attenuation
Flatness (Peak-to-Peak)
VSWR
T
rise
,
T
fall
T
on
,
T
off
T
ransients
Test Conditions
Units
dB
dB
dB
dB
dB
nS
nS
mV
Min.
23
18
Typ.
3.6
25
20
±7
±5
3:1
10
20
10
Max.
4.2
±10
±8
DC - 2.0 GHz
DC - 1.0 GHz
1.0 - 2.0 GHz
DC - 1.0 GHz
1.0 - 2.0 GHz
DC - 2.0 GHz
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, Control to 10% RF
In-band
Description
M/A-COM’s AT-255 is a GaAs MMIC voltage variable
absorptive attenuator in a low cost SOT-25 surface mount
plastic package. The AT-255 is ideally suited for use where
variable attenuation fine tuning and very low power
consumption are required.
Typical applications include radio, cellular, GPS equipment and
automatic gain/level control circuits.
The AT-255 is fabricated using a mature 1-micron GaAs
MESFET process. The process features full chip passivation for
increased performance and reliability.
Ordering Information
Part Number
AT-255
AT-255TR
Package
SOT-25 Plastic
Forward Tape and Reel
1
1. Reference Application Note M513 for reel size information.
1. All measurements at 1 GHz in a 50
system unless otherwise specified. Insertion Loss varies 0.003 dB/°C.
INCHES
MILLIMETERS
MIN
2.70
2.54
1.60 REF.
.80
.35
.08
.00
.45 REF
DIM
A
B
C
D
E
F
G
H
J
MIN
.106
.100
MAX
.122
.118
.051
MAX
3.10
3.00
1.30
.063 REF.
.032
.014
.003
.000
.018 REF.
.043
.020
.006
1.10
.50
.15
Note: 1. Leads Coplanarity should be 0.003 (0.08) max.
AT-255
3Volt Voltage Variable Attenuator
25 dB, DC - 2.5 GHz
1
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