Cascadable Amplifier

5 to 300 MHz

Rev. V3

A78 / SMA78

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Parameter

Units

Typical

Guaranteed

25ºC

0º to 50ºC -54º to +85ºC*

Frequency

MHz

2-350

5-300

5-300

Small Signal Gain (min)

dB

14.0

13.0

12.5

Gain Flatness (max)

dB

±0.3

±0.7

±1.0

Reverse Isolation

dB

17

Noise Figure (max)

dB

3.5

4.5

5.0

Power Output

@ 1 dB comp. (min)

dBm

19.5

18.0

17.5

IP3

dBm

+35

IP2

dBm

+49

Second Order Harmonic IP

dBm

+55

VSWR Input / Output (max)

1.5:1 / 1.5:1

1.9:1 / 1.9:1

2.0:1 / 2.0:1

DC Current @ 15 Volts (max)

mA

65

69

72

Features

 HIGH DYNAMIC RANGE: +114 dB/ 1 MHz

 HIGH OUTPUT: +19.0 dBm (TYP.)

 HIGH THIRD ORDER I.P.: +35 dBm (TYP.)

 LOW NOISE FIGURE: 3.5 dB (TYP.)

Description

The A78 RF amplifier is a discrete thin film hybrid design,

which incorporates the use of thin film manufacturing

processes for accurate performance and high reliability.

This single stage bipolar transistor feedback amplifier design

displays impressive performance over a broadband frequency

range. An active DC biasing network is used for temperature-

stable performance, in addition to an RF Choke, used for 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

A78

TO-8

SMA78

Surface Mount

CA78**

SMA Connectorized

Absolute Maximum Ratings

Parameter

Absolute

Maximum

Storage Temperature

-62ºC to +125ºC

Case Temperature

125ºC

DC Voltage

+17 V

Continuous Input Power

+18 dBm

Short Term Input power

(1 minute max.)

100 mW

Peak Power (3 µsec max.)

0.5 W

“S” Series Burn-In

Temperature (case)

125ºC

Parameter

Rating

75ºC/W

0.668 W

Junction Temperature Rise

50ºC

** The connectorized version is not RoHs compliant.