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參數(shù)資料
| 型號： | AT-283 |
| 英文描述： | Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2 GHz |
| 中文描述： | 數(shù)字衰減器，15.5分貝，5位的TTL驅(qū)動(dòng)器，直流- 2吉赫 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大?。?/td> | 255K |
| 代理商： | AT-283 |
Digital Attenuator, 15.5 dB, 5-Bit,
TTL Driver, DC - 2 GHz
AT
-283
CR-12
V 5.00
Electrical Specifications
1: T
A = 25°C
Features
n
Attenuation: 0.5 dB Steps to 15.5 dB
2
n
Temperature Stability: ± 0.18 dB from –55°C
to +85°C Typical
n
Low DC Power Consumption
n
Hermetic Surface Mount Package
n
Integral TTL Driver
n
50 O Nominal Impedance
Description
M/A-COM’s AT-283 is a GaAs FET 5-bit digital attenuator
with a 0.5 dB minimum step size and 15.5 dB total
attenuation. This attenuator and integral TTL driver is in a
hermetically sealed ceramic 16-lead surface mount package.
The AT-283 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.
Parameter
Test Conditions
Units
Min
Typical
Max
Reference
Insertion Loss
DC-0.5 GHz
DC-1.0 GHz
DC-2.0 GHz
dB
—
2.2
2.5
2.9
Attenuation Accuracy
3
Any Single Bit
DC-2.0 GHz
Any Combination of Bits
DC-2.0 GHz
± (0.25 +3% of attenuation setting in dB) dB
or ± 0.4 dB, whichever is greater
VSWR
DC-1.0 GHz
DC-2.0 GHz
—
1.6:1
1.7:1
Trise, Tfall
Ton, Toff
Transients
10% to 90%
50% Control to 90/10% RF
In-band (peak—peak)
nS
mV
—
10
27
22
—
1 dB Compression
4
Input Power
0.05 GHz
Input Power
0.5-2.0 GHz
dBm
—
+20
+28
—
Input IP3
4
For two-tone input power
0.05 GHz
up to +5 dBm
0.5-2.0 GHz
dBm
—
+40
+47
—
1.
All specifications apply when operated with bias voltages of +5.0V for VCC and –5.0V to -8.0V for VEE, and 50 O impedance at
all ports unless otherwise specified.
2.
Above reference insertion loss.
3.
This attenuator is guaranteed monotonic.
4.
VEE = -5.0V for the typical numbers given.
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