Amplifier Research 75A250 Broadband Amplifier 10 kHz - 250 MHz

Amplifier Research 75A250 Broadband Amplifier
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Manual Datasheet

The Amplifier Research 75A250 is a self-contained broadband unit designed for laboratory applications where instantaneous bandwidth, high gain and moderate power output are required. Solid state technology is used exclusively to offer significant advantages in reliability and cost. A valuable feature is the continually variable attenuator which enables the operator to adjust the amplifier gain over a 18 dB range to meet specific output power requirements by means of a simple front panel control.


Typical applications include antenna and component testing, wattmeter calibration, EMI susceptibility testing, use as a driver for frequency multipliers and high power amplifiers and as an RF source for nuclear magnetic resonance imaging studies.

 

Specifications:


Power Output, CW Nominal: 100 Watts
Minimum: 75 Watts
Linear @ 1 dB compression: 50 Watts minimum
Flatness ±1.0 dB maximum
Frequency Response 10 kHz - 250 MHz instantaneously
Input For Rated Output 1.0 milliwatt maximum
Gain
(at maximum setting)
49 dB minimum
Gain Adjustment (continuous range) 18 dB minimum
Input Impedance 80 ohms, VSWR 1.5:1 maximum
Output Imedance 50 ohms, VSWR 2.0:1 maximum
Mismatch Tolerance 100% of rated power without foldback. Will operate without damage or oscillation with any magnitude and phase of source and load impedance
Modulation Capability Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal
Noise Figure
(above 1.0 MHz)
16 dB typical
Harmonic Distortion Minus 20 dBc maximum at 50 watts
Third Order Intercept Point 57 dBm typical
Primary Power 90 - 135/180 - 270 VAC, 47 to 63 Hz, single phase 400 watts maximum
RF Connector Type N female