LM272 STMICROELECTRONICS [STMicroelectronics], LM272 Datasheet - Page 6

• Manufacturer Part Number: LM272
• Description: DUAL POWER OPERATIONAL AMPLIFIER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L272
Figure 12 : Motor Current Control Circuit.
Note : The input voltage level is compatible with L291 (5-BIT D/A converter).
Figure 13 : Bidirectional Speed Control of DC Motors.
2R3 R1
For circuit stability ensure that R
>
where R
= internal resistance of motor.
X
M
R
M
V
2R R1
s
The voltage available at the terminals of the motor is V
= 2 (V
) + R
where R
=
M
i
o
M
o
2
R
X
and I
is the motor current.
M
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