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PDF SG3731N Data sheet ( Hoja de datos )
| Número de pieza | SG3731N | |
| Descripción | DC MOTOR PULSE WIDTH MODULATOR | |
| Fabricantes | Microsemi Corporation | |
| Logotipo |  |
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SG1731/SG2731/SG3731
DC MOTOR PULSE WIDTH MODULATOR
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.
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
4/90 Rev 1.3 9/99
Copyright 1999
LINFINITY Microelectronics Inc.
1 11861 Western Avenue ∞ Garden Grove, CA 92841
(714) 898-8121 ∞ FAX: (714) 893-2570
1 page  
APPLICATION CIRCUITS
SG1731/SG2731/SG3731
FIGURE 5
Bi-directional speed control results when the feedback voltage
transducer is a tachometer.
FIGURE 6
The two-quadrant transfer function of the SG1731 is ideal for
pulse width modulated audio power amplifiers.
CONNECTION DIAGRAMS & ORDERING INFORMATION (See Note Below)
Package
Part No.
Ambient
Temperature Range
Connection Diagram
16-PIN CERAMIC DIP
J - PACKAGE
16-PIN PLASTIC DIP
N - PACKAGE
SG1731J/883B
SG1731J
SG2731J
SG3731J
SG2731N
SG3731N
-55°C to 125°C
-55°C to 125°C
-25°C to 85°C
0°C to 65°C
-25°C to 85°C
0°C to 65°C
+VT
2V∆+
N. I. INPUT
INV. INPUT
ERROR
CT
2V∆-
-V
T
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
+VS
SHUTDOWN
+VO
OUTPUT A
OUTPUT B
-VO
SUBSTRATE
-VS
Note 1. All packages are viewed from the top.
Note 2. Contact factory for flatpack and leadless chip carrier availability.
4/90 Rev 1.3 9/99
Copyright 1999
5
LINFINITY Microelectronics Inc.
11861 Western Avenue ∞ Garden Grove, CA 92841
(714) 898-8121 ∞ FAX: (714) 893-2570
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet SG3731N.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SG3731 | DC MOTOR PULSE WIDTH MODULATOR | Microsemi Corporation |
| SG3731J | DC MOTOR PULSE WIDTH MODULATOR | Microsemi Corporation |
| SG3731N | DC MOTOR PULSE WIDTH MODULATOR | Microsemi Corporation |
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