AA102-80 Datasheet, PDF (5/5 Pages) Alpha Industries – GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB Positive Control 0.5-2.5 GHz

GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB Positive Control 0.5–2.5 GHz
AA102-80
60
58
56
-40˚C
54
+25˚C
52
50
+85˚C
48
46
44
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
V₄
1 dB
V_High
V_High
V_High
V_High
V_High
0
0
V_High
V_High
V_High
V_High
0
V_High
0
V_High
V_High
V_High
0
V_High
V_High
0
V_High
V_High
0
V_High
V_High
V_High
0
V_High = +3 to +5 V (V_S = V_High ± 0.2 V).
V₅
0.5 dB
V_High
0
Attenuation
J₁–J₂
Reference I.L.
0.5 dB
V_High
V_High
V_High
V_High
0
1 dB
2 dB
4 dB
8 dB
15.5 dB Max. Atten.
Absolute Maximum Ratings
Characteristic
Value
RF Input Power
2 W > 500 MHz 0/8 V
0.75 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
24.1
23.7
24.1
0.5
3
24.4
24.0
25.0
1.0
3
24.4
23.8
24.3
2.0
3
24.7
24.1
24.5
4.0
3
36.8
36.8
36.8
8.0
3
26.7
26.8
29.6
15.5
3
27.1
25.6
28.7
Frequency = 0.5–2.5 GHz
Pin Out
GND
GND
V₁
V2
V3
V4
V5
GND
8 dB
4 dB
2 dB
1 dB
0.5 dB
CBL ^J1
GND
GND
GND
GND
GND
GND
CBL ^J2
VS
10 kΩ
DC blocking capacitors (C_BL) and biasing resistor must be supplied externally
for positive voltage operation.
C_BL = 47 pF for operation >500 MHz.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
5
Specifications subject to change without notice. 12/00A