ad8260 Analog Devices, Inc., ad8260 Datasheet - Page 16

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

AD8260
TEST CIRCUITS
GENERATOR
SIGNAL
Figure 52. Test Circuit for Input-Referred and Output-Referred Noise of the High Current Driver
50Ω
FILTER
LP
Figure 54. Test Circuit for Harmonic Distortion of the High Current Driver
Figure 51. Test Circuit for Frequency Response of the High Current Driver
0.1µF
0.1µF
Figure 53. Test Circuit for Output Impedance of the High Current Driver
50Ω
0.1µF
0.1µF
1:1
0.1µF
0.1µF
INRN
INRP
AD8260—HIGH CURRENT DRIVER
CURRENT DRIVER
INRN
INRP
AD8260—HIGH
OUT
AD8260—HIGH CURRENT DRIVER
50Ω
50Ω
INRN
INRP
0.1µF
0.1µF
NETWORK ANALYZER
VMDO
50Ω
VOCM
AD8260—HIGH CURRENT DRIVER
VMDO
VOCM
–
+
Rev. 0 | Page 16 of 32
INRN
INRP
–
+
–
+
VOCM
–
+
–
+
+3.3V
–3.3V
VMDO
TXOP
TXFB
TXOP
TXFB
VOCM
50Ω IN
–
+
TXFB
TXOP
WITH S-PARAMETER MODE
0.1µF
NETWORK ANALYZER
50Ω
TXFB
TXOP
0.1µF
IN
IN
SPECTRUM
ANALYZER
0.1µF
5pF
453Ω
50Ω
R
C
LOAD
LOAD
IN
SPECTRUM
ANALYZER
50Ω