RTscan RT211, Руководство по интеграции

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Chapter 3 Electrical Specifications
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Power Supply
Do not power up the RT211 until it is properly connected. Be sure the power is cut off before connecting a
flexible cable to or disconnecting a flexible cable from the host interface connector. Hot-plugging could
damage the engine.
Unstable power supply or sharp voltage drops or unreasonably short interval between power-ons may lead
to unstable performance of the engine. Do not resupply the power immediately after cutting it off. The
minimum interval must exceed 2 seconds.
Ripple Noise
Image sensor and decoder chip are directly fed by the input power of RT211. To ensure the image quality, a
power supply with low ripple noise is needed.
Acceptable ripple range (peak-to-peak) : ≤50mV (≤30mV recommended).
DC Characteristics
Operating Voltage
Ta=23℃
Parameter Description Minimu
m
Typical Maximum Unit
V
DD
Voltage Drain Drain 3.15 3.3 3.45 V
V
IH
High Level Input Voltage V
DD
-0.5 - - V
V
IL
Low Level Input Voltage - - 0.5 V
V
OH
High Level Output Voltage V
DD
-0.3 - - V
V
OL
Low Level Output Voltage - - 0.3 V
Operating Current
Ta=23℃
，
VDD=3.3V
Operating Current Standby Current
56mA (typical), 132mA
(max.)
3.4mA ( TTL mode)
55.2mA (USB mode)