SG1731L

更新时间： 2024-09-23 13:02:43

品牌	Logo	应用领域
美高森美 - MICROSEMI		电机
页数	文件大小	规格书
5页	143K
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SG1731L 数据手册

SG1731/SG2731/SG3731

DC MOTOR PULSE WIDTH MODULATOR

FEATURES

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.

• ±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

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.

HIGH RELIABILITY FEATURES

- SG1731

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.

♦ Available to MIL-STD-883

♦ LMI level “S” processing available

BLOCK DIAGRAM

4/90 Rev 1.3 9/99

LINFINITY

Microelectronics

Inc.

11861 Western Avenue

∞

Garden Grove, CA 92841

FAX: (714) 893-2570

(714) 898-8121

∞

12 3 4 5

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