2694 Series Attenuator Family
Absorptive Linearized Attenuators
Product Data Sheet
The most important thing we build is trust
Features:
Description:
Cobham’s 2694 series voltage variable attenuators operate
over wide dynamic range and octave bandwidths. The circuit
for the device is built using PIN diode chips in a broadband
microstrip design. The linearized driver uses hybrid IC’s and of-
fers transfer functions that produce linear RF attenuation with
input voltage. State-to-state switch speed of 600 nanoseconds
is standard, even with a temperature compensation network.
+0.35 dB Max
+0.30 dB Max
+0.30 dB Max
1.6:1 Max
1.6:1
Dynamic
Max
Switching
1.6:1 Max
Range (dB) Time (nS)
8.0 dB Max
7.5 dB Max
60
45
60
45
Operating
Power (W)
Part
Number
•
Standard Bandwidths up to 18 GHz
•
Environmentally Sealed
•
Linear Operation
Maximum Ratings:
Storage Temperature:
Operating Temperature:
Attenuation Accuracy:
-65°C to +125°C
-55°C to +95°C
20-2000 MHz
20-1000 MHz
20- 500 MHz
Specifications 25°C
20-2000 MHz
VSWR:
Frequency
Range (GHz)
Insertion
Loss (dB)
20-1000 MHz
VSWR Low
VSWR
20-
Any
MHz
Loss State
500
State
Reference Insertion Loss:
1.5:1
20-2000 MHz
1.8
2.0:1
20-1000 MHz
2.0 - 4.0
20- 500 MHz
2
1.5:1
2.0:1
8.5
45
dB Max
600
600
0.100
0.100
0.100
0.100
0.100
2694-1001-XY
2694-1002-XY
2694-1003-XY
2694-1004-XY
2694-1005-XY
2694-1006-XY
2694-1007-XY
2694-1008-XY
Isolation:
2.2
Switching Speed:
4.0 - 8.0
Control:
2.5
60 dB Min
1.6:1
500 nS Max
2.0:1
1.6:1
TTL
2.0:1
2.0:1
2.2:1
600
600
600
DC Bias:
DC Bias:
+5 VDC at 150 mA and -15 VDC at 100 mA
8.0 - 16.0
3.4
2.2:1
60
600
0.100
Operating Temperature:
2.0:1
0 to +43°C
3.2
2.0:1
2.0:1
2.2:1
2.2:1
45
60
600
600
0.100
0.100
3
+5 VDC at 65 mA and -12 VCD at 65 mA
12.0 - 18.0
3.5
1. Driver current request +/- 125 mA typ.
2. Switching Time measured from 50% control voltage to 10% or 90% of detected RF.
3. Linearity: +/- 1.0 dB or +/- 4% (whichever is greater) deviation from best fit straight line.
4. Flatness: +/- 1.0 dB or +/- 8% whichever is greater.
5. Temperature variation: +/- 1.0dB or +/- 3% whichever is greater.
6. Transfer function: 0 to +10V typ.
7. Specify voltage and logic connector from option table.
Notes:
XY Option Table:
X Bias Voltage
Y Logic Conn.
0
1
2
Solder Pin
SMC Conn.
SMA Conn.
0
1
2
3
N/A
N/A
+15V/-15V
+12V/-12V
For further information please contact:
Cobham Sensor Systems
1001 Pawtuckett Blvd.
Lowell, MA 01854 USA
Tel: 877-COBHAM7 (877-262-4267)
Email: Sales.Space&Components@Cobham.com
Data Sheet Subject to Change Without Notice
www.cobham.com
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