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Alpha Industries - GaAs IC 5 Bit Digital Attenuator 1 dB LSB DC-2 GHz

Numéro de référence AA260-85
Description GaAs IC 5 Bit Digital Attenuator 1 dB LSB DC-2 GHz
Fabricant Alpha Industries 
Logo Alpha Industries 





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AA260-85 fiche technique
GaAs IC 5 Bit Digital Attenuator
1 dB LSB DC–2 GHz
Features
s Attenuation 1.0 dB Steps to 31 dB
with High Accuracy
s Low DC Power Consumption
s Low Cost SSOP-20 Plastic Package
Description
The AA260-85 is a 5 bit, GaAs IC FET digital attenuator
in a low cost SSOP-20 package. This attenuator has an
LSB of 1 dB and a total attenuation of 31 dB. The
AA260-85 is particularly suited where high attenuation
accuracy, low insertion loss and low intermodulation
products are required. Typical applications include
cellular radio, wireless data, wireless local loop and other
gain level control circuits.
SSOP-20
PIN 20
0.209 (5.30 mm)
±0.012 (0.30 mm)
AA260-85
(Previously AD260-85)*
0.307 (7.80 mm)
±0.016 (0.307 mm)
PIN 1
INDICATOR
PIN 1
0.283 (7.20 mm)
±0.012 (0.30 mm)
0.0256
(0.65 mm) 0.078
0.069
(1.75 mm)
BSC
(2.00 mm)
MAX.
±0.004
(0.10 mm)
0.010 (0.25 mm)
0.004 (0.090 mm)
8˚ MAX.
0.012
(0.30 mm)
REF.
0.008 (0.20 mm) MAX.
0.002 (0.05 mm) MIN.
0.030 (0.75 mm)
±0.008 (0.10 mm)
Electrical Specifications at -40°C to +85°C (0, -5 V)
Parameter1
Condition
Frequency2 Min. Typ.
Max. Unit
Insertion Loss
DC0.5 GHz
DC1.0 GHz
DC2.0 GHz
1.4 1.7 dB
1.6 2.0 dB
2.0 2.3 dB
Attenuation Range
Attenuation Accuracy3
DC1.0 GHz
DC1.8 GHz
DC2.0 GHz
31
± (0.2 + 3% of
Attenuation Setting in dB)
± (0.4 + 5% of
Attenuation Setting in dB)
± (0.5 + 6% of
Attenuation Setting in dB)
dB
dB
dB
dB
VSWR (I/O)
Switching Characteristics4
Rise, Fall (10/90% or 90%/10% RF)
On, Off (50% CTL to 90%/10% RF)
Video Feedthru
DC2.0 GHz
1.4:1
15
25
25
1.7:1
nS
nS
mV
Input Power for 1 dB Compression
VHigh = -5 V
0.52.0 GHz
0.05 GHz
+25
+18
+29
+22
dBm
dBm
Intermodulation Intercept Point (IP3)
Control Voltages
For Two-tone Input Power +5 dBm
VHigh = -5 V
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = -5 V @ 300 µA Max.
0.52.0 GHz
0.05 GHz
+42
+30
+48
+36
dBm
dBm
1. All measurements made in a 50 system, unless otherwise specified.
2. DC = 300 kHz.
3. Attenuation referenced to insertion loss.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
*Due to conflict with another companys product numbering system, Alphas attenuator products starting with the letters ADare being changed to AA.
Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email [email protected] www.alphaind.com
Specifications subject to change without notice. 12/00A
1

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