LA7 / SMLA7 / CLA7
Limiting Amplifier
50 - 500 MHz
Rev. V2
Features
Product Image
SYMMETRICAL CLIPPING
GOOD EVEN-ORDER SUPPRESSION
HIGH OUTPUT LEVEL: +11.5 dBm (TYP.)
HIGH THIRD-ORDER IP: +28 dBm (TYP.)
FAST PULSE RECOVERY TIME: < 50 NSEC (TYP.)
Description
The LA7 limiting amplifier is a discrete hybrid design, which
uses thin film manufacturing processes for accurate
performance and high reliability.
This design uses a Schottky diode limiter circuit at the input,
and a single stage bipolar transistor feedback amplifier at the
output. An RF choke is used for DC power supply decoupling.
Both TO-8 and Surface Mount packages are hermetically
sealed, and MIL-STD-883 environmental screening is available.
Ordering Information
Part Number
Package
LA7
TO-8
SMLA7
CLA7 **
Surface Mount
SMA Connectorized
** The connectorized version is not RoHs compliant.
Electrical Specifications: Z0 = 50, VCC = +15 VDC
Absolute Maximum Ratings
Parameter
Absolute
Typical
Guaranteed
Maximum
-62ºC to +125ºC
+125ºC
Parameter
Units
25ºC
0º to 50ºC -54º to +85ºC*
Storage Temperature
Case Temperature
DC Voltage
Frequency
MHz
dB
20-550
12.5
50-500
12.0
50-500
11.0
+17 V
Small Signal Gain (min)
Gain Flatness (max)
Continuous Input Power
+23 dBm
dB
±0.2
±0.5
±0.7
Short Term Input power
(1 minute max.)
400 mW
1 W
Noise Figure (max)
50-300 MHz
dB
dB
7.0
7.5
8.0
8.5
8.5
9.0
Peak Power (3 µsec max.)
Noise Figure (max)
300-500 MHz
“S” Series Burn-In
Temperature (case)
+125ºC
Power Output
@ 1 dB comp. (min)
50-300 MHz
dBm
+12.0
+11.5
+11.0
+10.0
+8.0
+7.0
Thermal Data: VCC = +15 VDC
Power Output
@ 1 dB comp. (min)
300-500 MHz
Parameter
Rating
45ºC/W
0.560 W
dBm
dBm
Thermal Resistance θjc
IP3
+28
1.3:1 / 1.3:1
54
Transistor Power Dissipation Pd
VSWR Input / Output (max)
DC Current @ 15 Volts (max)
1.7:1 / 1.7:1
56
2.0:1 / 2.0:1
58
Junction Temperature Rise
Above Case Tjc
+25.2ºC
mA
* Over temperature performance limits for part number CLA7, guaranteed from 0oC to +50oC only.
1
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