Datasheet

AD8260
Rev. A | Page 17 of 32
SIGNAL
GENERATORS
50Ω
IN
50Ω
INRP
VOCM
INRN
0.1µF
0.1µF
0.1µF
TXFB
TXOP
VMDO
SPECTRUM
ANALYZER
453Ω
1kΩ
1kΩ
1:1
07192-155
AD8260—HIGH CURRENT DRIVER
50Ω
–
+
Figure 55. Test Circuit for IMD3 and OIP3 of the High Current Driver
OSCILLOSCOPE
IN
50Ω
50Ω
INRP
–
+
VOCM
INRN
0.1µF
0.1µF
0.1µF
TXFB
TXOP
VMDO
50Ω
12.5Ω
R
LOAD
C
LOAD
07192-156
AD8260—HIGH CURRENT DRIVER
Figure 56. Test Circuit for Pulse Response of the High Current Driver
OSCILLOSCOPE
IN 50Ω
50Ω
453Ω
453Ω
VMDO
0.1µF
0.1µF
0.1µF
100Ω
SIGNAL
GENERATOR
50Ω
+
–
100Ω
PREAMP
07192-157
AD8260—VGA/PREAMPLIFIER
Figure 57. Test Circuit for Gain Step Size and Error of the VGA/Preamplifier
DMM
VMDO
0.1µF
100Ω
+
–
100Ω
PREAMP
07192-158
AD8260—VGA/PREAMPLIFIER
Figure 58. Test Circuit for Output-Referred Offset Voltage of the VGA/Preamplifier