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參數(shù)資料
| 型號(hào)： | SG1731J/883B |
| 廠商： | MICROSEMI CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | DC MOTOR PULSE WIDTH MODULATOR |
| 中文描述： | BRUSH DC MOTOR CONTROLLER, 0.4 A, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大小： | 250K |
| 代理商： | SG1731J/883B |
SG1731/SG2731/SG3731
Rev 1.3a 3.19.2005
Microsemi Inc.
Copyright
1999
11861
Western
Avenue
∞
Garden
Grove,
CA
92841
1
(714) 898-8121
∞
FAX: (714) 893-2570
DC MOTOR PULSE WIDTH MODULATOR
FEATURES
±±±±±3.5V to ±±±±±15V control supply
±±±±±2.5V to ±±±±±22V driver supply
Dual 100mA source/sink output
drivers
5KHz to 350KHz oscillator range
High slew rate error amplifier
Adjustable deadband operation
Digital SHUTDOWN input
HIGH RELIABILITY FEATURES
- SG1731
Available to MIL-STD-883
LMI level “S” processing available
BLOCK DIAGRAM
DESCRIPTION
The SG1731 is a pulse width modulator circuit designed specifically for DC motor
control. It provides a bi-directional pulse train output in response to the magnitude
and polarity of an analog error signal input. The device is useful as the control
element in motor-driven servo systems for precision positioning and speed control,
as well as in audio modulators and amplifiers using carrier frequencies to 350 KHz.
The circuit contains a triangle waveform oscillator, a wideband operational amplifier
for error voltage generation, a summing/scaling network for level-shifting the
triangle waveform, externally programmable PWM comparators and dual
±100mA,
±22V totem pole drivers with commutation diodes for full bridge output. A
SHUTDOWN terminal forces the drivers into a floating high-impedance state when
driven LOW. Supply voltage to the control circuitry and to the output drivers may be
from either dual positive and negative supplies, or single-ended.
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