M I C R O T E C H N O L O G Y

HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

PA40

HTTP://WWW . APEXMICROTECH . COM (800) 546 - APEX (800) 546 - 2739

FEATURES

MONOLITHIC MOS TECHNOLOGY

LOW COST

HIGH VOLTAGE OPERATION—250V

LOW QUIESCENT CURRENT—2mA

NO SECOND BREAKDOWN

HIGH OUTPUT CURRENT—120 mA PEAK

APPLICATIONS

TELEPHONE RING GENERATOR

PIEZO ELECTRIC POSITIONING

ELECTROSTATIC TRANSDUCER & DEFLECTION

DEFORMABLE MIRROR FOCUSING

DESCRIPTION

The PA40 is a high voltage monolithic MOSFET operational amplifier achieving performance features previously found only in hybrid designs while increasing reliability. Inputs are protected from excessive common mode and differential mode voltages. The safe operating area (SOA) has no second breakdown limitations. External compensation provides the user flexibility in choosing optimum gain and bandwidth for the application.

The PA40 is packaged in Apex's 7 LEAD TO220 package. The metal back of the package is tied to –Vs. The 15 mil minimum spacing of the TO220 package is adequate to stand-off the 250V rating of the PA40. The user must insure that a minimum of 11 mils spacing is maintained between pins for the circuit board artwork. If spacing is less than 11 mils, the voltage must be derated.

TYPICAL APPLICATION

 

 

 

2.67K

140V

100K

 

 

 

 

 

 

 

IN6300A

 

 

 

15V

.22

 

 

2.5K + 15

 

 

 

 

 

 

 

 

 

 

 

MUR130

 

 

 

 

3.3pF

 

 

10K

10K

MUR120

 

2.2K

 

4

5

6

 

 

 

7

 

 

 

90Vrms

 

 

 

 

 

 

 

 

2

PA40

 

 

ICL8038

 

 

 

 

 

 

 

8

 

 

 

 

 

10

11

IN6300A

 

100

 

 

 

 

 

 

 

82K

.22

330pf

 

*

 

 

 

 

* 1.5 F @ 16Hz

 

MUR120

–140V

MUR130

–15V

 

 

1.2

F @ 20Hz

Telephone Ring Generator

 

 

 

The PA40 is set for a gain of 38.5 boosting the 2.33V signal to 90V. The recommended compensation for gains above 30 is used. If capacitive loading is at least 330pF at all times, the recommended snubber network may be omitted.

EQUIVALENT SCHEMATIC

 

 

 

 

 

 

3

 

 

 

 

D1

 

+VS

 

 

 

 

 

 

 

Q1

 

 

 

Q2

 

 

 

 

 

 

 

 

 

 

 

 

Q3

IOUT

 

 

 

 

 

 

Q4

 

 

Q5

 

 

5

 

 

 

 

 

1

 

 

 

6

Q6

 

–IN

 

 

 

COMP

 

D2

D3

D4

D5

COMP Q8

 

2

 

 

 

7

 

 

+IN

Q11

 

 

 

 

 

 

 

 

 

Q10

 

 

 

 

Q12

 

Q13

 

 

 

 

 

 

Q14

 

 

 

 

 

 

 

–VS

 

 

 

 

 

 

4

 

 

 

 

 

SUB

 

EXTERNAL CONNECTIONS

PHASE COMPENSATION

Gain

CC

RC

1

18pF

2.2K

10

10pF

2.2K

30

3.3pF

2.2K

NOTE: At gains above 30, Rc and Cc may be omitted.

1 2 3 4 5 6 7

- IN

+ IN

+VS

-VS

OUT

COMP (Rc)

COMP (Cc)

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

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Apex Digital PA40 manual Description, Typical Application, Equivalent Schematic, External Connections, Phase Compensation

PA40 specifications

The Apex Digital PA40 is an innovative portable speaker system that is designed to enhance the audio experience for both personal and professional use. This speaker stands out for its exceptional sound quality, versatile connectivity options, and portable design, making it an ideal choice for music lovers, event organizers, and outdoor enthusiasts.

One of the main features of the PA40 is its powerful audio output. Equipped with high-fidelity drivers and advanced engineering, the speaker delivers clear, rich sound across a wide frequency range. Whether you're using it for a small gathering, a backyard barbecue, or a larger event, the PA40 ensures that everyone enjoys an immersive listening experience with deep bass and crisp highs.

In terms of technology, the PA40 boasts Bluetooth connectivity, allowing users to easily pair their devices and stream music wirelessly from smartphones, tablets, or laptops. This feature not only simplifies the audio setup but also provides the convenience of controlling playback from a distance. Additionally, the speaker includes auxiliary input options, giving users the ability to connect non-Bluetooth devices directly.

Another noteworthy characteristic of the PA40 is its built-in rechargeable battery, which ensures portability without sacrificing performance. With an impressive battery life, users can enjoy hours of uninterrupted music playback, making it perfect for outdoor events or on-the-go listening. The rugged design of the speaker also means it can withstand various environmental conditions, making it suitable for all types of adventures.

Furthermore, the Apex Digital PA40 includes integrated microphone inputs, making it an excellent choice for presentations and karaoke parties. The speaker features a user-friendly interface with easy-to-access controls, allowing users to adjust volume, switch tracks, and toggle between modes effortlessly.

In conclusion, the Apex Digital PA40 shines as a versatile and reliable audio solution. With its powerful sound output, Bluetooth and auxiliary connectivity, long-lasting battery life, and robust design, it meets the demands of diverse users and scenarios. Whether you’re enjoying a day outdoors or hosting an event, the PA40 is the perfect companion for any occasion. With this speaker, Apex Digital has truly delivered a product that prioritizes quality and convenience, making it a must-have for anyone seeking an exceptional audio experience.