• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
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
Limiting Amplifier
50 to 500 MHz
Rev. V2
LA7 / SMLA7
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
• 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.
Product Image
Ordering Information
Part Number Package
LA7 TO-8
SMLA7 Surface Mount
CLA7 ** SMA Connectorized
Absolute Maximum Ratings
Parameter Absolute
Maximum
Storage Temperature -62ºC to +125ºC
Case Temperature +125ºC
DC Voltage +17 V
Continuous Input Power +23 dBm
Short Term Input power
(1 minute max.) 400 mW
Peak Power (3 µsec max.) 1 W
“S” Series Burn-In
Temperature (case) +125ºC
Thermal Data: VCC = +15 VDC
Parameter Rating
Thermal Resistance θjc 45ºC/W
Transistor Power Dissipation Pd 0.560 W
Junction Temperature Rise
Above Case Tjc +25.2ºC
Electrical Specifications: Z0 = 50Ω, VCC = +15 VDC
Parameter Units Typical Guaranteed
25ºC 0º to 50ºC -54º to +85ºC*
Frequency MHz 20-550 50-500 50-500
Small Signal Gain (min) dB 12.5 12.0 11.0
Gain Flatness (max) dB ±0.2 ±0.5 ±0.7
Noise Figure (max)
50-300 MHz dB 7.0 8.0 8.5
Noise Figure (max)
300-500 MHz dB 7.5 8.5 9.0
Power Output
@ 1 dB comp. (min)
50-300 MHz
dBm +12.0 +11.0 +8.0
Power Output
@ 1 dB comp. (min)
300-500 MHz
dBm +11.5 +10.0 +7.0
IP3 dBm +28
VSWR Input / Output (max) 1.3:1 / 1.3:1 1.7:1 / 1.7:1 2.0:1 / 2.0:1
DC Current @ 15 Volts (max) mA 54 56 58
* Over temperature performance limits for part number CLA7, guaranteed from 0oC to +50oC only.
** The connectorized version is not RoHs compliant.
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
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.
2
Limiting Amplifier
50 to 500 MHz
Rev. V2
LA7 / SMLA7
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.
Typical Performance Curves at +25°C
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
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.
3
Limiting Amplifier
50 to 500 MHz
Rev. V2
LA7 / SMLA7
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.
Outline Drawing: TO-8 *
Outline Drawing: Surface Mount *
Outline Drawing: SMA Connectorized *
∗ Dimensions are inches (millimeters) ±0.015 (0.38) unless otherwise specified.
Typical Performance Curves at +25°C
WEIGHT: 1 gram (0.04 oz.) max
WEIGHT: 1 gram (0.04 oz.) max
WEIGHT: 19 grams (0.67 oz.) max
