ad8260 Analog Devices, Inc., ad8260 Datasheet - Page 17

• Manufacturer Part Number: ad8260
• Description: High Current Driver Amplifier And Digital Vga/preamplifier With 3 Db Steps
• Manufacturer: Analog Devices, Inc.

GENERATORS
SIGNAL
GENERATOR
SIGNAL
50Ω
50Ω
50Ω
50Ω
Figure 58. Test Circuit for Output-Referred Offset Voltage of the VGA/Preamplifier
0.1µF
Figure 57. Test Circuit for Gain Step Size and Error of the VGA/Preamplifier
50Ω
1kΩ
1kΩ
50Ω
0.1µF
Figure 55. Test Circuit for IMD3 and OIP3 of the High Current Driver
Figure 56. Test Circuit for Pulse Response of the High Current Driver
0.1µF
0.1µF
+
PREAMP
–
AD8260—VGA/PREAMPLIFIER
AD8260—HIGH CURRENT DRIVER
1:1
INRN
INRP
+
PREAMP
–
AD8260—VGA/PREAMPLIFIER
0.1µF
0.1µF
VMDO
VMDO
VOCM
VMDO
100Ω
100Ω
AD8260—HIGH CURRENT DRIVER
–
+
INRN
INRP
100Ω
100Ω
Rev. 0 | Page 17 of 32
VMDO
TXOP
TXFB
VOCM
–
+
0.1µF
0.1µF
0.1µF
TXFB
TXOP
453Ω
453Ω
C
R
LOAD
LOAD
12.5Ω
0.1µF
DMM
IN
453Ω
OSCILLOSCOPE
OSCILLOSCOPE
IN
50Ω
IN
SPECTRUM
ANALYZER
50Ω
50Ω
AD8260