UPD720102 データシートの表示（PDF） - NEC => Renesas Technology
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UPD720102 Datasheet PDF : 36 Pages
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μPD720102
Figure 3–1. Differential Input Sensitivity Range for Low-/full-speed
Differential Input Voltage Range
Differential Output
Crossover
Voltage Range
−1.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
4.6
Input Voltage Range (V)
Figure 3–2. Receiver Sensitivity for Transceiver at DP/DM
Level 1
+400 mV
Differential
Point 3
Point 1
Point 5
Point 4
Point 2
Point 6
0V
Differential
Level 2
−400 mV
Differential
0%
Unit Interval
100%
USB
Connector
Nearest
Device
Vbus
D+
D−
Gnd
Figure 3–3. Receiver Measurement Fixtures
Test Supply Voltage
15.8 Ω
15.8 Ω
50 Ω
Coax
50 Ω
Coax
+
To 50 Ω Inputs of a
High Speed Differential
Oscilloscope, or 50 Ω
Outputs of a High Speed
Differential Data Generator
−
143 Ω
143 Ω
20
Data Sheet S17998EJ4V0DS
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