ad8260 Analog Devices, Inc., ad8260 Datasheet - Page 18

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

AD8260
Figure 61. Test Circuit for Input-Referred and Output-Referred Noise Measurements of the VGA/Preamplifier
0.1µF
VMDO
Figure 59. Test Circuit for Frequency Response and Group Delay of the VGA/Preamplifier
Figure 60. Test Circuit for Output Resistance of the VGA/Preamplifier
AD8260—VGA/PREAMPLIFIER
+
PREAMP
–
0.1µF
50Ω
0.1µF
VMDO
+
PREAMP
–
+
PREAMP
–
AD8260—VGA/PREAMPLIFIER
100Ω
100Ω
PREAMPLIFIER
AD8260—VGA/
VGA
Rev. 0 | Page 18 of 32
VMDO
NETWORK ANALYZER
NETWORK ANALYZER
WITH S-PARAMETER
100Ω
100Ω
100Ω
100Ω
CAPABILITY
+3.3V
–3.3V
0.1µF
0.1µF
1kΩ
1kΩ
50Ω
50Ω
0.1µF 453Ω
0.1µF 453Ω
IN
IN
AD8129
×10
0.1µF
SPECTRUM
ANALYZER
50Ω