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Frequency Response
Frequency Response
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8
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2
0
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-4
-6
-8
0.01
SR446 400 MHz Programmable Gain Preamplifier
Figure 1 shows the typical frequency response from a 50 Ω source, for
each gain setting from +0 dB (bottom curve) to +40 dB (top curve). Some
gain peaking is typical between 200 MHz and 400 MHz.
Typical AC Gains vs Frequency
0.1
1
Frequency, MHz
Figure 1: Typical AC gain versus frequency. Measured with AC coupling, 50 Ω
input impedance, and full bandwidth. Input signal generated with 50 Ω source
impedance, amplitude adjusted for 130 mVpp sinusoidal output signal.
10
100
5
1000
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