Page 1
Datasheet
RFA 300
Precision RF Amplifier
Page 2
Datasheet RFA 300
Table Of Content
1 Applications......................................................................................................3
2 General Data....................................................................................................3
3 Maximum Ratings.............................................................................................3
4 Input Characteristics.........................................................................................4
5 Output Characteristics......................................................................................5
6 Harmonic Distortion..........................................................................................5
7 Intermodulation................................................................................................6
8 Small Signal Bandwidth....................................................................................6
9 Power Bandwidth..............................................................................................9
10 Impulse Response........................................................................................12
v1.4, EN, 14.07.2019, Subject to changes 2/13
Page 3
Datasheet RFA 300
1 Applications
• Baseband amplifier
• Driver for eddy current probes
• Ultrasonic driver
• Amplifier for RF sources
• ATE
• AWG output stage
• VHF transmitter
• Data cable driver
• HDTV video amplifier
2 General Data
Setup: Non-inverted
Output short-protected
Open-loop gain: 20 dB
Output voltage: 20 Vpp (with load), 22 Vpp (no load)
Output current: 100 mAp (DC - 1 MHz)
300 mAp (> 1 MHz)
Bandwidth: DC - 300 MHz (-3 dB)
Frequency response: ±0.1 dB (DC - 100 MHz)
±0.2 dB (100 MHz - 200 MHz)
Degradation of the maximum output amplitude for sine wave signals (due to slew rate):
0 dB (0 - 120 MHz)
-6 dB (240 MHz)
-9 dB (360 MHz)
Output impedance: 0 Ω / 50 Ω selectable
Input impedance: 50 Ω (optional 100 Ω)
Slew rate: 6300 V/μs
Power consumption: 3 W with no load, 6 W with maximum load
Connector type: BNC
Indication: Overdrive pos./neg. via LEDs
Output current limitation
Operating temperature: 0 - 40 °C (passive cooled, ext. fan recommended)
3 Maximum Ratings
Max. input power: 20 dBm or 3 V
Max. DC supply voltage: 14 V
Max. input voltage: -1.1 V to +1.1 V
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RMS
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Datasheet RFA 300
4 Input Characteristics
Illustration 1: Return loss input: > 25 dB at f < 100 MHz (50 Ω)
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Page 5
Datasheet RFA 300
5 Output Characteristics
Illustration 2: Return loss output: > 25 dB at f < 100 MHz
Output power
• Output 50 Ω
Sine wave: 24 dB (0.25 W) Output 50 Ω und R
f > 100 MHz linear degrading
DC: 0,5 W 5 V / 100 mA
• Ouput 0 Ω
Sine wave: 30 dBm (1 W) R
= 50 Ω, f < 120 MHz
Load
f > 100 MHz linear degrading
30 dBm (1.5 W) R
= 33 Ω
Load
f > 100 MHz linear degrading
DC: 1 W 10 V / 100 mA
6 Harmonic Distortion
(DC = 0 V)
Harmonic distortion: Output 50 Ω and R
= 50 Ω
Load
= 50 Ω, f < 120 MHz
Load
at U
at U
v1.4, EN,14.07.2019, Subject to changes 5/13
= 3.3 Vp (20 dBm), f = 8 MHz: h1 > 70 dBc h2 = 60 dBc
out
= 5 Vp (24 dBm), f = 8 MHz : h1 > 55 dBc h2 = 45 dBc
out
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Datasheet RFA 300
at U
= 3.3 Vp (20 dBm), f = 80 MHz: h1 > 48 dBc h2 > 38 dBc h3 > 45 dBc
out
7 Intermodulation
Output 50 Ω and R
at f = 10 MHz: IP3
at f = 40 MHz: IP3
= 50 Ω
Load
= 45 dBm
out
= 41 dBm
out
8 Small Signal Bandwidth
Illustration 3: Small signal bandwidth, P
= +2 dBm (Output 50 Ω, R
out
Load
=
50 Ω)
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Page 7
Datasheet RFA 300
Illustration 4: Small signal bandwidth, P
Ω)
= +2 dBm (Output 0 Ω, R
out
Load
= 50
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Page 8
Datasheet RFA 300
Illustration 5: Small signal bandwidth, P
500 Ω)
= +2 dBm (Output 0 Ω, R
out
Load
=
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Page 9
Datasheet RFA 300
9 Power Bandwidth
Illustration 6: Power bandwidth with Output 50 Ω, R
P
=24dBm,22dBm,20dBm,18dBm,16dBm,14dBm,12dBm,10dBm (blue =
out
= 50 Ω
Load
20dBm)
v1.4, EN,14.07.2019, Subject to changes 9/13
Page 10
Datasheet RFA 300
Illustration 7: Power bandwidth with Output 0 Ω, R
P
=22dBm,20dBm,18dBm,16dBm,14dBm,12dBm,10dBm (blue - 20dBm)
out
= 50 Ω
Load
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Page 11
Datasheet RFA 300
Illustration 8: Power bandwidth with Output 0 Ω, R
P
=22dBm,20dBm,18dBm,16dBm,14dBm,12dBm,10dBm (blue - 22dBm)
out
= 33 Ω
Load
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Datasheet RFA 300
Illustration 9: Power bandwidth with Output 0 Ω, R
P
=24dBm,22dBm,20dBm,18dBm,16dBm,14dBm,12dBm,10dBm (blue -
out
= 1 kΩ
Load
20dBm)
g = g(Plot) + 26.5 dB
10 Impulse Response
Output 0 Ω and R
= 50 Ω, Uin = 1 V
Load
pp
Illustration 10: Output voltage (hor. 1 ns/DEV, vert. 2
V/DIV)
v1.4, EN, 14.07.2019, Subject to changes 12/13
Page 13
Signal Generators
Probes
Precision Amplifiers
... Made in Germany
Measurement Range Extenders
DSP Systems
HUBER SIGNAL PROCESSING
Unternbergstr. 13
83278 Traunstein
Germany
Tel: +49 (0)861.213978 - 0
Fax: +49 (0)861.213978 - 40
Doc. No.: 0114-004
v1.4, 14.07.2019, Subject to changes
© HUBER SIGNAL PROCESSING www.huber-signal.com
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