A3987 查看數據表（PDF） - Allegro MicroSystems
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产品描述 (功能)
生产厂家
A3987 Datasheet PDF : 13 Pages
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A3987
DMOS Microstepping Driver with Translator
STEP
100
70
Phase 1
IOUT1A
0
DIR = H
(%)
–70
–100
100
70
Phase 2
IOUT2A
0
DIR = H
(%)
–70
–100
Slow
Slow
STEP
100
70
Phase 1
IOUT1A
0
DIR = H
(%)
Slow
Slow
Slow
Mixed
Mixed
Mixed
–70
–100
100
Phase 2
IOUT2B
DIR = H
(%)
70
Slow Slow
Slow
Slow
Mixed
Mixed
Mixed
0
–70
–100
Figure 2. Decay Mode for Full-Step Increments
Figure 3. Decay Modes for Half-Step Increments
STEP
100
94
70
Phase 1
38
IOUT1A
0
DIR = H
(%)
–38
–70
–93
–100
100
93
70
38
Phase 2
IOUT2B
0
DIR = H
(%)
–38
–70
–93
–100
Slow
Slow
Mixed
Mixed
Slow
Slow
Mixed
Mixed
Slow
Slow
Mixed
Figure 4. Decay Modes for Quarter-Step Increments
Allegro MicroSystems, Inc.
7
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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