AT-273 データシートの表示（PDF） - Tyco Electronics
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AT-273 Datasheet PDF : 2 Pages
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Digital Attenuator, 32 dB, 2-Bit,
TTL Driver, DC - 2.0 GHz
V 7.00
Features
n Attenuation: 16.0 dB Steps to 32 dB
n Low DC Power Consumption
n Hermetic Surface Mount Package
n Integral TTL Driver
n 50 ohm Impedance
n Temperature Stability: ±0.18 dB from -55°C to +85°C
Typ.
n Tape and Reel Packaging Available
CR-11
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.
Environmental screening is available. Contact the factory
for information.
Electrical Specifications: TA = 25°C
Parameter
Insertion Loss
Test Conditions
—
Attenuation Accuracy
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression
Input IP3
Input IP2
Vcc
-Vee
Vctl
Vctl
C1 Bit
Full Attenuation (32 dB)
Full Attenuation (32 dB)
Full Attenuation (32 dB)
Full Range
10% to 90%
50% Cntl to 90% / 10% RF
In-Band (peak-to-peak)
Input Power
Input Power
Two-tone inputs up to +5 dBm
Two-tone inputs up to +5 dBm
—
—
Logic (0) TTL
Logic (1) TTL
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
—
—
—
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
—
—
—
—
Units Min
Typ
Max
dB
—
—
1.6
dB
—
—
1.7
dB
—
—
1.9
± 3% of attenuation setting in dB
± 3% of attenuation setting in dB
± 3% of attenuation setting in dB, -1 dB
± 3% of attenuation setting in dB, -3 dB
Ratio
—
—
1.6:1
ns
—
7
—
ns
—
28
—
mV
—
30
—
dBm
—
+20
—
dBm
—
+28
—
dBm
—
+38
—
dBm
—
+48
—
dBm
—
+44
—
dBm
—
+68
—
V
4.5
5.0
5.5
V
-8.0
—
-5.0
V
0.0
—
0.8
V
2.0
—
5.0
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