TEST CIRCUITS
All graphs were generated using the setup shown in Figure 32, unless otherwise specified.
TERADYNE FR4 TEST BACKPLANE
GBX4 TO SMA DAUGHTER CARDS
AD8159
DIFFERENTIAL STRIPLINE TRACES
8mm WIDE, 8mm SPACE, 8mm HEIGHT
TRACE LENGTHS = 6", 18", 24", 30" + 3" × 2 DAUGHTER CARDS
Figure 31. Test Backplane
0.25"
DATA OUT
50Ω CABLE
PATTERN
GENERATOR
NOTES
1. SINGLE-ENDED REPRESENTATION
A
C
B
AD8159
AC-COUPLED
A
EVALUATION BOARD
C
B
50Ω CABLE
50Ω
50Ω
TEST BACKPLANE
Figure 32. AC-Coupled Test Circuit
50Ω CABLE
HIGH SPEED
REAL-TIME
OSCILLOSCOPE
50Ω
DATA OUT
50Ω CABLE
PATTERN
GENERATOR
NOTES
1. SINGLE-ENDED REPRESENTATION
A
C
B
AD8159
DC-COUPLED
A
EVALUATION BOARD
C
B
50Ω CABLE
50Ω
50Ω
TEST BACKPLANE
Figure 33. DC-Coupled Test Circuit
Note: Test Circuit Used for Figure 28
50Ω CABLE
HIGH SPEED
REAL-TIME
OSCILLOSCOPE
50Ω
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