Digital Attenuator, 31.0 dB, 1 dB
LSB, 5-Bit, 800 - 2500 MHz
V 2.00
Features
Functional Schematic
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5 Bits, 1 dB Steps
Excellent Accuracy
Positive Control (+3 to +5V)
Small Low Cost QSOP-16 (SSOP-16) Package
VC5
VC4
VC3
VC2
VC1
1dB
2dB
16dB
Description
RFIN
RFOUT
The M/A-COM MAATSS0002 is a 1 dB step GaAs MMIC
digital attenuator with 31.0 dB dynamic range in a low cost
QSOP-16 (SSOP-16) package. It requires external DC
blocking capacitors on the RF ports, positive supply voltage
and five individual bit control voltages. It is particularly
suited where high attenuation accuracy, low insertion loss
and low intermodulation products are required. Typical
applications include base stations, wireless data, and
wireless local loop gain level control circuits.
Absolute Maximum Ratings 1
Parameter
Absolute Maximum
Max Input Power
0.8 - 2.5 GHz
+34 dBm
Operating Temperature
Storage Temperature
-40°C to +85°C
-65°C to +150°C
The MAATSS0002 is fabricated using M/A-COM’s GaAs
1. Operation of this device above any one of these
parameters may cause permanent damage.
1.0 micron process.
The process features full chip
passivation for increased performance and reliability.
Electrical Specifications: TA = 25 °C, Z0 = 50 W
Parameter
Conditions
Frequency
Units
Min.
Typ.
Max.
Insertion Loss
—
0.8 - 1.5 GHz
1.5 - 2.0 GHz
2.0 - 2.5 GHz
dB
dB
dB
—
—
—
1.8
2.2
2.7
1.9
2.3
2.9
Accuracy
—
—
0.8 - 1.5 GHz
1.5 - 2.0 GHz
2.0 - 2.5 GHz
± (0.3 dB + 4% of Attenuation)
± (0.3 dB + 3% of Attenuation)
± (0.4 dB + 3% of Attenuation)
Step Change
0.8 - 1.5 GHz
1.5 - 2.0 GHz
2.0 - 2.5 GHz
dB
dB
dB
0.4
0.4
0.4
1.0
1.0
1.0
1.4
1.6
1.8
Attenuation Range
VSWR
—
0.8 - 2.5 GHz
dB
dB
µS
µS
mV
30.0
—
31.0
—
32.2
2.0:1
—
—
0.8 - 2.5 GHz
Trise, Tfall
Ton, Toff
10% to 90% RF, 90% to 10% RF
50% Control to 10% / 90% RF
In Band
—
—
—
—
2
—
2
—
Transients
P1dB
—
120
—
+3V
+5V
0.8 - 2.5 GHz
0.8 - 2.5 GHz
dBm
dBm
15
18
—
—
—
—
IP3
+3V Input Power up to + 5 dBm
+5V Input Power up to +5 dBm
0.8 - 2.5 GHz
0.8 - 2.5 GHz
dBm
dBm
34
43
—
—
—
—
Control Voltages
Vlow = 0.0 ± 0.2V @ 20 µA, 40 µA Max.
Vhigh = +3 ± 0.2V or +5V ± 0.2V @ 20 µA, 40 µA Max.
Vs = Vhigh @ 200 µA Max