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

MP111

MP111U

1

MP111, MP111A

Power Operational Amplifier

MP111 • MP111A

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

FEATURES

• LOW COST

• HIGH VOLTAGE - 100 VOLTS

• HIGH OUTPUT CURRENT- 50 AMP PULSE OUTPUT, 15

AMP CONTINUOUS

• 170 WATT DISSIPATION CAPABILITY

• 130 V/uS SLEW RATE

• 500kHz POWER BANDWIDTH

APPLICATIONS

• INKJET PRINTER HEAD DRIVE

• PIEZO TRANSDUCER DRIVE

• INDUSTRIAL INSTRUMENTATION

• REFLECTOMETERS

• ULTRA-SOUND TRANSDUCER DRIVE

DESCRIPTION

The MP111 operational amplifier is a surface mount constructed

component that provides a cost-effective solution in many indus-

trial applications. The MP111 offers outstanding performance

that rivals much more expensive hybrid components yet has a

footprint of only 4 sq in. The MP111 has many optional features

such as four-wire current limit sensing and external compensa-

tion. The 500 kHz power bandwidth and 15 amp continuous

and 50A pulse output of the MP111 makes it a good choice

for piezo transducer drive applications. The MP111 is built on

a thermally conductive but electrically insulating substrate that

can be mounted to a heat sink.

EQUIVALENT CIRCUIT DIAGRAM

34-PIN DIP

PACKAGE STYLE FD

TYPICAL APPLICATION

INKJET NOZZLE DRIVE

The MP111's fast slew rate and wide power bandwith make it

an ideal nozzle driver for industrial inkjet printers. The 50 amp

pulse output capability can drive hundreds of inkjet nozzles

simultaneously.

EXTERNAL CONNECTIONS

R1

R12

R9

R10

Q1A

Q1B

Q15A

Q15B

R2

R11

R8

Q14

Q24

R20

+Vs

-IN

+IN

-Vs

+Vb

R7

Q2

R3

R19

Q23

-Vb

Q3

Q22

R17

R5

Q12 Q13

Q4

Cc2

Cc1

C1

C3

GND

GND

R15

Q17

IC1

+Ilim

-Ilim

D2

Q11

Q16

OUT

-Vb

+Vb

C5

SUBSTRATE

BACKPLATE

+Vs

+Vs

-Vs

-Vs

OUT

OUT

OUT

OUT

OUT

BACK

PLATE

TP

D1

Q8

Q7

Q9

Q6

Q20

Q19

Q21

Q18

8

4

3

2

1

34

5

6

25

33

32

30

11

14

15

16

27

12

13

28

20

21

22

17

18

19

C

C

+V

S

-V

S

OUT

C

C

GND

GND

+V

B

+V

S

-V

B

-V

S

-I

LIM

+I

LIM

R

LIM

R

F

R

I

PIEZO

TRANSDUCER

PRINT

NOZZLE

COMMAND

VOLTAGE

-IN

+IN

GND

GND

1

2

3

4

5

6

7

8

31

32

29

30

28

27

26

25

33

34

NOTES:

BOTH PINS 3 AND 32 REQUIRED CONNECTED TO SIGNAL GROUND.

C2 AND C3 ELECTROLYTIC ≥ 10µF PER AMP OUTPUT CURRENT.

C1, C4, C5-8 HIGH QUALITY CERAMIC ≥ 0.1µF.

ALL OUTPUT PINS MUST BE TIED TOGETHER.

SEE PACKAGE OUTLINE FD IN THE OUTLINE DIMENSIONS DATASHEET.

VIEW FROM COMPONENT SIDE

PHASE COMPENSATION

GAIN W/O BOOST

≥1

≥4

≥10

C

C

100pF

68pF

33pF

9

10

11

12

22

24

23

21

OUT

NC

13

14

15

16

17

18

19

20

OUT

OUT

LOAD &

FEEDBACK

NC

NC

TYP. SLEW RATE

55 V/µS

60 V/µS

130 V/µS

OUT

OUT

OUT

BACK

PLT

TP

NC

NC

NC

NC

NC

C5

C6

C7

C8

GAIN W BOOST

≥3

≥6

≥10

C

C

470pF

220pF

100pF

TYP. SLEW RATE

12 V/µS

27 V/µS

55 V/µS

+

C1

C2

C4

+

C3

Copyright © Cirrus Logic, Inc. 2009

(All Rights Reserved)

http://www.cirrus.com

MAY 2009

APEX − MP111UREVC