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Attenuation: 16.0 dB Steps to 32 dB
Low DC Power Consumption
Hermetic Surface Mount Package
Integral TTL Driver
50 ohm Impedance
Temperature Stability: 鹵0.18 dB from -55擄C to +85擄C Typ.
Tape and Reel Packaging Available
CR-11
ORIENTATION MARK
PIN 2
0.050 (1.27)
16 Places
0.050 TYP
(1.27)
7 EQUAL SPACES
@ .050 (1.27) Tol.
Non-Cumulative
0.450
(11.43)
0.015
鹵
0.003
(0.38
鹵
0.08)
16 Places
Pin 9
0.250
(6.35)
Description
M/A-COM's AT-273 is a GaAs FET digital attenuator with a 16.0
dB minimum step size and a 32 dB total attenuation range. This
attenuator and integral TTL driver is in a hermetically sealed
ceramic 16-lead surface mount package. The AT-273 is ideally
suited for use where accuracy, fast switching, very low power
consumption and low intermodulation products are required.
Typical applications include dynamic range setting in precision
receiver circuits and other gain/leveling control circuits. Environ-
mental screening is available. Contact the factory for information.
0.008
鹵
0.002
(0.20
鹵
0.05)
Pin 8
0.075 MAX
(1.91)
0.096
(2.44)
0.077
(1.96)
Pin 9
BOTTOM VIEW
Ordering Information
Part Number
AT-273
AT-273-TR
Package
Bulk Packaging
Tape and Reel
1
0.047 (1.19)
14 Places
1. Check with the factory for available quantities and reel size.
Electrical Specifications T
A
= +25擄C
Parameter
Insertion Loss
Test Conditions
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Frequency
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.0 GHz
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.0 GHz
Units
dB
dB
dB
Min
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Typical
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Max
1.6
1.7
1.9
Attenuation Accuracy
C1 Bit
Full Attenuation (32 dB)
鹵 3% of attenuation setting in dB
鹵 3% of attenuation setting in dB
鹵 3% of attenuation setting in dB, -1 dB
鹵 3% of attenuation setting in dB, -3 dB
Ratio
nS
nS
mV
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7
28
30
1.6:1
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VSWR
Trise, Tfall
Ton, Toff
Transients
Full Range
10% to 90%
50% Cntl to 90%/10% RF
In-Band (peak to peak)
V5.00
M/A-COM Division of AMP Incorporated
3
North America: Tel. (800) 366-2266, Fax (800) 618-8883
3
Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications Subject to change without notice.
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