PA162

4

PA162U

P r o d u c t I n n o v a t i o n F r o m

-40

0

40

80

120

45

55

65

75

CASE TEMPERATURE, T

BIAS CURRENT

-40

0

40

80

120

0

1

2

3

CASE TEMPERATURE, T

VOS

00

04

08

12

16

35

45

55

65

OUTPUT LOAD CAPACITANCE, C

PHASE MARGIN vs. OUTPUT LOAD CAPACITANCE

20

25

0

-20

20

40

60

1

10

100

1K

10K

90

100

110

120

130

VOLTAGE GAIN & PHASE vs. FREQUENCY

FREQUENCY, ƒ (KHz)

PULSE RESPONSE

TIME, t (µs)

0

10

20

30

40

50

-4

8

4

0

-8

-2

10

6

2

-6

-10

60

70

+V

A

V

-V

R

f

PULSE RESPONSE

TIME, t (µs)

0

200 400 600 800 1000

0

1200 1400

+V

A

V

-V

f

QUIESCENT CURRENT

2

4

6

8

10

AVERAGE QUIESCENT CURRENT, I

20

16

12

0

4

8

-80

-40

0

40

80

120

OUTPUT VOLTAGE SWING

OUTPUT CURRENT, I

0.1 0.2 0.3 0.4 0.5 0.6

0.6

1.8

1.4

1

0.2

0.8

2

1.6

1.2

0.4

0

0.7

1.0

0.9

0.8

-4

8

4

-8

-2

10

6

2

-6

-10

TYPICALAPPLICATION

R1 and R2 set up Amplifier A as non-inverting. Ampli-

fier B is set up as a unity gain inverter driven from the

output of Amplifier A. Note that Amplifier B inverts the

signals about the reference node, which is set at mid-

supply by R5 and R6. When the command input is

midrange, so is the output of Amplifier A. Since this is

also equivalent to the reference node voltage, the out-

put of Amplifier B is the same resulting in 0V across

the motor. Inputs more positive than 5V result in motor

current flow from left to right (see Figure 3). Inputs less

than 5V drive the motor in the opposite direction.

INPUT

0-10V

A

M

B

R2

R3

R4

R5

R6

R1

1/4 PA162

1/4 PA162

+28V

+

_

+

_

FIGURE3.BI-DIRECTIONALSPEEDCONTROL

FROMASINGLESUPPLY.

TYPICALPERFORMANCEGRAPHS