AA280-25 Datasheet, PDF (5/5 Pages) Alpha Industries – GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC-2 GHz

GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC–2 GHz
AA280-25
57
56
55
54
+85˚C
53
52
+25˚C
51
50
-40˚C
49
48
47
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Attenuation (dB)
IP3 vs. Attenuation and Temperature
Truth Table
V₁
0.5 dB
Bit
-5
0
-5
-5
-5
-5
0
V₂
1 dB
Bit
-5
-5
0
-5
-5
-5
0
V₃ V₄
2 dB
Bit
-5 0
-5 0
-5 0
0 -5
-5 0
-5 0
0 -5
V₅ V₆
4 dB
Bit
-5 0
-5 0
-5 0
-5 0
0 -5
-5 0
0 -5
V₇ V₈
8 dB
Bit
-5 0
-5 0
-5 0
-5 0
-5 0
0 -5
0 -5
Attenuation
J₁–J₂
Reference I.L.
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Max. Atten.
Absolute Maximum Ratings
Characteristic
Value
RF Input Power
2.0 W > 500 MHz 0/-8 V
0.5 W > 50 MHz 0/-8 V
Control Voltage
+0.2 V, -8 V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
Θ_JC
85°C/W
Note: Exceeding these ratings 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
22.70
23.30
24.20
0.5 dB
-3
23.50
24.20
25.10
1.0 dB
-3
24.60
25.00
25.90
2.0 dB
-3
22.90
23.40
24.30
4.0 dB
-3
31.60
31.80
33.10
8.0 dB
-3
31.00
28.70
26.40
15.5 dB
-3
25.00
24.40
25.00
Pin Out
J1 GND GND GND GND GND GND J2
16 15
14
13
12
11
10
9
8 dB
4 dB
2 dB 1 dB 0.5 dB
1
2
3
4
5
6
7
8
V8 V7 V6
V5 V4
V3 V2
V1
5
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
Specifications subject to change without notice. 11/00A