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M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
1
Coaxial Limiters
Rev. V5
2690 Series
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Features
• Broadband Frequency Ranges
• Environmentally Sealed
• Feedback Leveling
• Small Size
• Reduced VSWR
Description
M/A-COM’s standard limiter series 2690 is a line of
completely passive solid state receiver protectors.
They exhibit octave and multi-octave performance
using a unique construction technique involving PIN
diodes in broadband microstrip circuits. Careful
diode selection allows a variety of device
performance, trading off peak and average power
handling, spike leakage and recovery time. Typical
insertion loss and VSWR curves are shown below.
Outline 1
Electrical Specifications: TA = 25°C
Outline 2
1. Insertion Loss and VSWR measured at 0 dBm input power.
2. Peak input power rated at 1 microsecond pulse width, 1% duty into 1.5:1 source VSWR and 1.15 load VSWR.
3. Spike leakage energy: 0.5 ergs max.
4. 1 dB compression: +7 dBm min.
INPUT
SMA PLUG
.90
(22.9 mm)
SMA JACK
.19
(4.83 mm)
.38
(9.65 mm)
.38
(9.65 mm)
.19
(4.83 mm)
INPUT
SMA PLUG
1.25
(31.75 mm)
SMA JACK
.38
(9.65 mm)
.38
(9.65 mm)
.19
(4.83 mm)
.19
(4.83 mm)
Part Frequency
Range (GHz) Insertion
Loss (dB) VSWR Average
Power (W) Peak Power
(W) Recovery
Time (nS) Leakage
Power (mW) Outline Draw-
ing
Number
2690-1001 1.0 - 2.0 0.7 1.5:1 1 100 100 75 1
2690-1003 0.9 1.5:1 3 1000 1000 100 2
2690-1005 2.0 - 8.0 1.1 1.6:1 1 100 100 50 1
2690-1007 1.3 1.6:1 3 1000 1000 100 2
2690-1009 8.0 - 18.0 1.8 2.0:1 1 100 100 50 1
2690-1011 2.3 2.0:1 3 1000 1000 100 2
2690-1013 2.0 - 15.0 2 2.0:1 1 100 100 50 1
15.0-18.0 3 2.0:1 1 100 100 50 1
2690-1014 2.0 - 15.0 2.2 2.0:1 2 500 250 75 1
15.0-18.0 3 2.0:1 2 500 250 75 1
2690-1015 2.0 - 15.0 2.3 2.0:1 3 1000 1000 100 2
15.0-18.0 3 2.0:1 3 1000 1000 100 2