A78 Datasheet, PDF (1/2 Pages) Tyco Electronics – 5 TO 300 MHz CASCADABLE AMPLIFIER

A78 / SMA78
Cascadable Amplifier
5 to 300 MHz
Rev. V3
Features
Product Image
• 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.
Ordering Information
Part Number
A78
SMA78
CA78**
Package
TO-8
Surface Mount
SMA Connectorized
** The connectorized version is not RoHs compliant.
Electrical Specifications: Z₀ = 50Ω, V_CC = +15 V_DC
Absolute Maximum Ratings
Parameter
Frequency
Small Signal Gain (min)
Gain Flatness (max)
Reverse Isolation
Noise Figure (max)
Power Output
@ 1 dB comp. (min)
IP3
IP2
Units
MHz
dB
dB
dB
dB
dBm
dBm
dBm
Typical
25ºC
2-350
14.0
±0.3
17
3.5
19.5
+35
+49
Guaranteed
0º to 50ºC -54º to +85ºC*
5-300
5-300
13.0
12.5
±0.7
±1.0
4.5
5.0
18.0
17.5
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
Thermal Data: V_CC = +15 V_DC
Parameter
Rating
Second Order Harmonic IP dBm
+55
VSWR Input / Output (max)
1.5:1 / 1.5:1 1.9:1 / 1.9:1
DC Current @ 15 Volts (max) mA
65
69
2.0:1 / 2.0:1
72
Thermal Resistance θ_jc
Transistor Power Dissipation P_d
Junction Temperature Rise
Above Case T_jc
75ºC/W
0.668 W
50ºC
* Over temperature performance limits for part number CA78, guaranteed from 0^oC to +50^oC only.
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