AA226-87 View Datasheet(PDF) - Alpha Industries
Part Name
Description
Manufacturer
AA226-87 Datasheet PDF : 5 Pages
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GaAs IC 4 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz
AA226-87
56
55
54
+85˚C
53
52
+25˚C
51
50
49
48
-40˚C
47
46
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
J1–J2
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
24.5
24.1
24.6
1 dB
3
25.2
24.8
25.2
2 dB
3
25.0
24.3
24.9
4 dB
3
31.2
30.4
32.8
8 dB
3
28.3
26.3
29.2
15 dB
3
26.6
24.8
27.5
Pin Out
J1
CBL
GND
GND
V1
V2
V3
V4
GND
GND
8 dB
4 dB
2 dB
1 dB
GND
GND
GND
GND
GND
GND
VS
10 kΩ
CBL
J2
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 sales@alphaind.com • www.alphaind.com
5
Specifications subject to change without notice. 9/00A
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