AD8331 Analog Devices, AD8331 Datasheet - Page 15

• Manufacturer Part Number: AD8331
• Description: Ultralow Noise VGAs with Preamplifier and Programmable RIN
• Manufacturer: Analog Devices

TEST CIRCUITS
50Ω
50Ω
120nH
FB*
49Ω
22pF
*FERRITE BEAD
120nH
*FERRITE BEAD
FB*
1Ω
A
22pF
Figure 51. Gain and Bandwidth Measurements
0.1µF
0.1µF
0.1µF
Figure 53. Used for Noise Measurements
1.8nF 270Ω
Figure 52. Transient Measurements
0.1µF
120nH
22pF
0.1µF
LMD
FB*
INH
OUT
NETWORK ANALYZER
1.8nF
0.1µF
50Ω
LMD
Rev. C | Page 15 of 32
INH
LMD
270Ω
INH
DUT
G
0.1µF
0.1µF
DUT
50Ω
DUT
0.1µF
0.1µF
237Ω
237Ω
IN
0.1µF
0.1µF
28Ω
28Ω
237Ω
237Ω
28Ω
28Ω
1:1
B
1:1
*FERRITE BEAD
OSCILLOSCOPE
IN
IN
50Ω
SPECTRUM
ANALYZER
1:1
50Ω
AD8331/AD8332