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What is AA105-86?

This electronic component, produced by the manufacturer "Alpha Industries", performs the same function as "GaAs IC 4 Bit Digital Attenuator 1 dB LSB Positive Control 0.5-3.0 GHz".


AA105-86 Datasheet PDF - Alpha Industries

Part Number AA105-86
Description GaAs IC 4 Bit Digital Attenuator 1 dB LSB Positive Control 0.5-3.0 GHz
Manufacturers Alpha Industries 
Logo Alpha Industries Logo 


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GaAs IC 4 Bit Digital Attenuator
1 dB LSB Positive Control 0.5–3.0 GHz
AA105-86
Features
s Attenuation 1 dB Steps to 15 dB
with High Accuracy
s Single Positive Control (+3 to +5 V) for
Each Bit
s Low DC Power Consumption
s Miniature Low Cost MSOP-10
Plastic Package
Description
The AA105-86 is a 4 bit, single positive control GaAs IC
FET digital attenuator. It requires DC blocking capacitors,
positive supply voltage (VS) and four individual positive bit
control voltages (V1–V4). The AA105-86 is particularly
suited where high attenuation accuracy, low insertion loss
and low intermodulation products are required. Typical
applications include cellular radio, wireless data, and
wireless local loop gain level control circuits.
MSOP-10
PIN 10
PIN 1
INDICATOR
PIN 1
0.118 (3.00 mm)
± 0.006 (0.15 mm)
0.193
(4.90 mm)
± 0.006
(0.15 mm)
0.034
(0.86 mm)
± 0.004
(0.10 mm)
0.0197
(0.500 mm)
BSC
0.118 (3.00 mm)
± 0.006 (0.15 mm)
8˚–16˚
0˚–6˚
0.009 (0.23 mm)
REF.
0.043
(1.09 mm)
MAX.
0.006 (0.15 mm) MAX.
0.002 (0.05 mm) MIN.
0.022 (0.55 mm)
± 0.006 (0.15 mm)
Electrical Specifications at -40°C to +85°C (0, +5 V)
Parameter1
Condition
Frequency
Min.
Typ. Max. Unit
Insertion Loss
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
2.5–3.0 GHz
1.5 1.8 dB
2.1 2.4 dB
2.4 2.7 dB
2.7 3.0 dB
Attenuation Range
Attenuation Accuracy2
VSWR (I/O)3
Switching Characteristics4
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
0.5–1.0 GHz
1.0–3.0 GHz
0.5–2.5 GHz
2.5–3.0 GHz
15
± (0.2 + 2% of
Attenuation Setting in dB)
± (0.3 + 3% of
Attenuation Setting in dB)
1.5:1
1.7:1
2.0:1
2.2:1
180
270
50
dB
dB
dB
ns
ns
mV
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
Control Voltages
VS = +3 V
VS = +5 V
0.5–3.0 GHz
0.5–3.0 GHz
For Two-tone Input Power +5 dBm
VS = +3 V
VS = +5 V
0.5–3.0 GHz
0.5–3.0 GHz
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
VS = VHigh ± 0.2 V
+20 +24
+25 +29
+43 +49
+44 +50
dBm
dBm
dBm
dBm
1. All measurements made in a 50 system, unless otherwise specified.
2. Attenuation referenced to insertion loss.
3. Input/output.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email [email protected] www.alphaind.com
Specifications subject to change without notice. 9/00A
1

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AA105-86 equivalent
GaAs IC 4 Bit Digital Attenuator 1 dB LSB Positive Control 0.53.0 GHz
AA105-86
57
56
55 +85˚C
54
53 +25˚C
52
51 -40˚C
50
49
48
47
46
45
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Attenuation (dB)
IP3 vs. Attenuation and
Temperature (500 MHz)
Truth Table
V1
8 dB
V2
4 dB
V3
2 dB
VHigh
VHigh
VHigh
VHigh
0
0
VHigh
VHigh
VHigh
0
VHigh
0
VHigh
VHigh
0
VHigh
VHigh
0
VHigh = +3 to +5 V (VS = VHigh ± 0.2 V).
V4
1 dB
VHigh
0
VHigh
VHigh
VHigh
0
Attenuation
J1J2
Reference I.L.
1 dB
2 dB
4 dB
8 dB
15 dB Max. Atten.
Absolute Maximum Ratings
Characteristic
Value
RF Input Power
1 W > 500 MHz 0/8 V
0.5 W @ 50 MHz 0/8 V
Supply Voltage
+8 V
Control Voltage
-0.2 V, +8 V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
Note: Exceeding these parameters may cause irreversible damage.
Compression Point vs. Attenuation,
Voltage, and Temperature
Attenuation Control Input Power @ 1 dB Compression
State Voltage (V) +25°C (dBm) +85°C (dBm) -40°C (dBm)
Ins. Loss
3
24.7 24.2 24.4
1 dB
3
25.2 24.9 25.0
2 dB
3
24.8 24.2 24.7
4 dB
3
31.1 30.5 31.9
8 dB
3
25.1 25.9 27.3
15 dB
3
24.9 24.4 27.0
Pin Out
V1
V2
V3
V4
GND
8 dB
CBL J1
4 dB GND
GND
2 dB GND
1 dB
CBL J2
10 k
VS
DC blocking capacitors (CBL) and biasing resistor must be supplied
externally for positive voltage operation.
CBL = 47 pF for operation >500 MHz.
Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email [email protected] www.alphaind.com
Specifications subject to change without notice. 9/00A
5


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Part NumberDescriptionMFRS
AA105-86The function is GaAs IC 4 Bit Digital Attenuator 1 dB LSB Positive Control 0.5-3.0 GHz. Alpha IndustriesAlpha Industries

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