Datasheet

AD8260
Rev. A | Page 19 of 32
0.1µF
475Ω
475Ω
100Ω
100Ω
VMDO
+
–
PREAMP
0.1µF
0.1µF
07192-052
SPECTRUM
ANALYZER
50Ω
1:1
LP
FILTER
50Ω
50Ω
SIGNAL
GENERATOR
IN
AD8260—VGA/PREAMPLIFIER
Figure 62. Test Circuit for Harmonic Distortion Measurements of the VGA/Preamplifier
VMDO
0.1µF
100Ω
+
–
100Ω
PREAMP
OSCILLOSCOPE
50Ω
50Ω
IN 50Ω
07192-163
AD8260—VGA/PREAMPLIFIER
Figure 63. Test Circuit for IP1dB, Pulse Response, Overdrive Recovery, and Gain Response of the VGA/Preamplifier