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STK672-400 bảng dữ liệu(PDF) 11 Page - Sanyo Semicon Device

tên linh kiện STK672-400
Giải thích chi tiết về linh kiện  Thick-Film Hybrid IC 2-phase Stepping Motor Driver
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STK672-400 bảng dữ liệu(HTML) 11 Page - Sanyo Semicon Device

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STK672-400
No.A0751-11/19
[Vref (Sets the current that is used as the reference for setting the output current)]
(1) Pin circuit type: Analog input (differential amplifier). Input resistance: 200k
Ω
(2) Function: The input voltage must be in the voltage range from the control system power supply VDD to 2V. Note
that there is a resistance component (200k
Ω, typical) in this hybrid IC's input and that therefore an input
current occurs.
If the Vref voltage structure is formed as a resistor voltage divider, that circuit must be designed to take
that input current into account. The input current is 12.5
μA (typical). Note that this is the current when
Vref is 5V. The input current falls according to the formula shown below when the Vref voltage is below
that level.
Ios=Vref/(200k+200k) --------- (1)
• Input circuit structure
200k
Ω
2.5V
to DAC
Hybrid IC pin 19
200k
Ω : ±1%
Vref
STK672-400/410
200k
Ω
Ios=12.5
μA


Số phần tương tự - STK672-400

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