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ISL59311_14 Datasheet, PDF (7/14 Pages) Intersil Corporation – Differential Video Amplifier with Common Mode Sync Encoder and Serial Digital Interface
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Test Circuits and Waveforms
ISL59311
SOUT-
SDATA
D
SOUT+
VOD
50Ω
50Ω VOC
SDATA
SOUT-
D
SOUT+
VOD
50Ω
VCM
0V to 5V
50Ω
FIGURE 1A. VOD AND VOC
FIGURE 1B. VOD WITH COMMON MODE LOAD
FIGURE 1. DC DRIVER TEST CIRCUITS
5V
DI
2.5V
2.5V
0V
SIGNAL
GENERATOR
SDATA
SOUT-
D
SOUT+
CL = 50pF
100Ω
CL = 50pF
SOUT-
SOUT+
tPLH
DIFF OUT
(SOUT+ - SOUT-)
90%
10%
tR
tPHL
VOH
VOL
90%
10%
tF
+VOD
-VOD
SKEW = |tPLH - tPHL|
FIGURE 2A. TEST CIRCUIT
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
SDATA
D
SOUT±
50pF
SIGNAL
GENERATOR
FIGURE 3A. TEST CIRCUIT
ISOURCE
ISINK
TRANSMIT
SOUT±
tPZH
tPZL
2.5V
3.5V
2.5V
tPHZ
90%
tPLZ
SOUT±
1.5V
10%
FIGURE 3B. MEASUREMENT POINTS
FIGURE 3. DRIVER DATA RATE
2.5V SIN-
SIN+
SDATA 50pF
R
SIGNAL
GENERATOR
SIN+
SDATA
2.5V
tPLH
1.5V
2.5V
4.0V
1.0V
tPHL
1.5V
VCCS = 5V
0V
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. RECEIVER PROPAGATION DELAY AND DATA RATE
7
FN6372.3
April 25, 2007
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