參數(shù)資料
型號： LM9831
廠商： National Semiconductor Corporation
英文描述： LM9831 42-Bit Color, 1200dpi USB Image Scanner
中文描述： LM9831 42位彩色，1200dpi的USB圖像掃描儀
文件頁數(shù)： 40/41頁
文件大?。?/td> 320K
代理商： LM9831
40
www.national.com
+Vmotor
+
–
Reset
A
A
Phase A
Invert
Set-Dominant
S/R Flipflop
+Vmotor
B
B
Stepper
Phase A
Stepper
Phase A
Stepper
Phase B
Stepper
Phase B
DAC code for
phase A
3
SENSE1
SENSE2
HIGH CURRENT
GND SENSE
1
1
DAC A:
0.110V,
0.175V,
0.325V,
0.425V,
0.465V
Comparators need no hysteresis. SR flipflops are set periodi-
cally by pulse from PWM Generator. Flipflops can only be reset
after SR goes low when Reset (comparator output) is high
(V
SENSE
> V
DAC
).
Reset is level sensitive, not edge sensitive.
12MHz
÷1 to 256
8
÷64
PWM
Generator
0/64 to
63/64
high time
6
CR
CR
+
–
Reset
Set-Dominant
S/R Flipflop
3
DAC B:
0.110V,
0.175V,
0.325V,
0.425V,
0.465V
Set
Set
DAC code for
phase B
A
A
Q
Q
Phase B
Invert
B
B
TriState Stepper
Motor Outputs
LM9831
Stepper Motor Current Controller Block Diagram
External Components
相關(guān)PDF資料
PDF描述
LM9831CCVJDX LM9831 42-Bit Color, 1200dpi USB Image Scanner
LM9832CCVJD LM9832 42-Bit Color, 1200dpi USB Image Scanner
LM9832 LM9832 42-Bit Color, 1200dpi USB Image Scanner
LM9833CCVJD LM9833 48-Bit Color, 1200dpi USB Image Scanner
LM9833 LM9833 48-Bit Color, 1200dpi USB Image Scanner
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM9831CCVJD 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9831 42-Bit Color, 1200dpi USB Image Scanner
LM9831CCVJDX 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9831 42-Bit Color, 1200dpi USB Image Scanner
LM9832 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9832 42-Bit Color, 1200dpi USB Image Scanner
LM9832B-B WAF 制造商:Texas Instruments 功能描述:
LM9832B-E WAF 制造商:Texas Instruments 功能描述:
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