Digital Attenuator, 31.5 dB, 6-Bit,
TTL Driver, DC-4.0 GHz
V 7.00
AT90-1107
Features
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CSP-1
Attenuation: 0.5 dB Steps to 31.5 dB
Single Positive Supply
Contains internal DC to DC converter
Low DC Power Consumption
Small Footprint, JEDEC Package
Integral TTL Driver
50 ohm Impedance
Description
M/A-COM's AT90-1107 is a GaAs FET 6-bit digital
attenuator with integral TTL driver. Step size is 0.5 dB pro-
viding a 31.5 dB total attenuation range. This device is in an
FQFP-N plastic surface mount package. The AT90-1107 is
ideally suited for use where accuracy, fast speed, very low
power consumption and low costs are required.
Electrical Specifications T
A
= +25°C
Parameter
Insertion Loss
Attenuation
Accuracy
Test Conditions
—
Individual Bits 0.5-1-2-4-8-16 dB
Any Combination of Bits
1 to 31.5 dB
Frequency
DC - 4.0 GHz
DC - 4.0 GHz
DC - 4.0 GHz
Units
dB
dB
dB
Min
—
—
—
Typica
4.5
—
—
Max
5.1
±(.3 +7% of atten setting)
±(.5 +8% of atten setting)
VSWR
Switching Speed
1 dB Compression
Input IP
3
+Vcc
Logic “0”
Logic “1”
Icc
Full Range
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
Two-tone inputs up to +5 dBm
—
Sink Current is 20 µA max.
Source Current is 20 µA max.
Vcc min to max, Logic “0” or “1”
DC - 4.0 GHz
—
—
50 MHz
0.5 - 4.0 GHz
50 MHz
0.5-4.0 GHz
—
—
—
—
Ratio
nS
nS
dBm
dBm
dB
dB
V
V
V
mA
—
—
—
—
—
—
—
4.75
0.0
2.0
—
2.0:1
75
20
+21
+29
+35
+48
5.0
—
—
6
2.2:1
150
50
—
—
—
—
5.25
0.8
5.0
10
MA-COM [ M/A-COM TECHNOLOGY SOLUTIONS, INC. ]
