3 Volt Voltage Variable Attenuator, 25 dB, DC - 2.5 GHz
Absolute Maximum Ratings1
Parameter
Absolute Maximum
Maximum Input Power
+21 dBm
Control Voltage VC
-8V, +0.5V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
1. Exceeding any one or a combination of these limits may cause
permanent damage.
Typical Performance Curves
Functional Schematic1
Vc
GND
5
4
1 23
RF GND RF
1. VCC = 0 VDC to -3 VDC @ 50 µA max.
AT-255
Relative Attenuation vs. Control Voltage
0
-5
-10
-15
2.5GHz
-20
1.0GHz
-25
-30
-35
-3
-2
-1
CONTROL VOLTAGE (VOLTS)
50MHz
0
Insertion Loss vs. Frequency
0
-1
-2
-3
-4
0
1
2
3
4
FREQUENCY(GHz)
Maximum Relative Attenuation vs. FQrequency
0
-5
-10
-15
-20
-25
-30
-35
0
0.5
1
1.5
2
2.5
3
FREQUENCY (GHz)
0 Return Loss vs. Control @ 900 MHz
-5
-10
-15
-20
-25
-3
-2
-1
0
CONTROL VOLTAGE (VOLTS)
IInNpPuUtTIPIP33vvss.CCOoNnTtrRoOl LVoVlOtaLgTeAGE
45
40
35
500 MHz
30
25
50MHz
20
15
10
5
0
-3
-2
-1
0
CONTROL VOLTAGE (VOLTS)
Specifications subject to change without notice.
North America: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Input P1dB vs. Control Voltage
30
25
50MHz
20
15 500MHz
10
5
0
-3
-2
-1
0
CONTROL VOLTAGE (VOLTS)
V 4.0
2