Apex PA44 Datasheet

HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

TOP VIEW

OUT COMP COMP

100Ω

1315171921

12157

–INNC+IN

–V

S

+V

S

C

C

R

C

R

LIM

R

LIM

I

LIM

*

330pF

C

S

*

*

Supply bypassing required. See General Operating Considerations.

MICROTECHNOLOGY

HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX [phone]

FEATURES

• SURFACE MOUNT PACKAGE

• MONOLITHIC MOS TECHNOLOGY

• LOW COST

• HIGH VOLTAGE OPERATION—350V

• 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 PA44 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 and can be observed with all type loads
by choosing an appropriate current limiting resistor. External
compensation provides the user flexibility in choosing
optimum gain and bandwidth for the application.

The PA44 is packaged in Apex's PSOP1 non-hermetic
surface mountable dual in line package. The metal back of the
package is tied to –Vs.

TYPICAL APPLICATION

140V

IN6300A

15V

2.5K + 15

100K2.67K

.22

PA44

EQUIVALENT SCHEMATIC

Q1

Q5Q4

5

–IN

D2 D3 D4 D5

7

+IN

EXTERNAL CONNECTIONS

Q11

Q12

D1

19

COMP
COMP

17

SUB

Q6

Q8

Q13

Q2

Q7

Q9

Q10

Q3

Q14

13

+V

I

LIM

15

21

OUT

–V

12

S

S

10K 10K

7

ICL8038

8

*

* 1.5 µF @ 16Hz

1.2 µF @ 20Hz

to 90V. The recommended compensation for gains above 30

The PA44 is set for a gain of 38.5 boosting the 2.33V signal

is used. If capacitive loading is at least 330pF at all times, the
recommended snubber network may be omitted. The 27 ohm
resistor sets current limit to a nominal value of 111mA to insure
peak currents out of at least 78mA.

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]

1110

54

–15V

MUR120

6

2

IN6300A

82K

MUR120

Telephone Ring Generator

–140V

PA44

3.3pF

.22

MUR130

2.2K

MUR130

27

100

330pf

90Vrms

PHASE COMPENSATION

Gain C

1 18pF 2.2KΩ

C

≥10 10pF 2.2KΩ
≥30 3.3pF 2.2KΩ

R

C

PA44

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +VS to –V
OUTPUT CURRENT, continuous within SOA 60 mA

S

350V

OUTPUT CURRENT, peak 120 mA
POWER DISSIPATION, continuous @ TC = 25°C 12W
INPUT VOLTAGE, differential ±16 V
INPUT VOLTAGE, common mode ±V
TEMPERATURE, pin solder – 10 sec 220°C
TEMPERATURE, junction

2

S

150°C
TEMPERATURE, storage –65 to +150°C
TEMPERATURE RANGE, powered (case) –40 to +125°C

SPECIFICATIONS

PARAMETER TEST CONDITIONS
INPUT

OFFSET VOLTAGE, initial

4

1

MIN TYP MAX UNITS

PA44

15 30 mV
OFFSET VOLTAGE, vs. temperature4Full temperature range 70 130 µV/°C
OFFSET VOLTAGE, vs supply 20 32 µV/V
OFFSET VOLTAGE, vs time 75 µV √kh
BIAS CURRENT, initial 50

200

pA
BIAS CURRENT, vs supply 2 20 pA/V
OFFSET CURRENT, initial 50 200 pA
INPUT IMPEDANCE, DC 10

11

Ω

INPUT CAPACITANCE 5pF
COMMON MODE, voltage range ±VS–12 V
COMMON MODE REJECTION, DC VCM = ±90V DC 84 94 dB
NOISE, broad band 10kHz BW, RS = 1KΩ 50 µV RMS
NOISE, low frequency 1-10 Hz 110 µV p-p

GAIN

OPEN LOOP at 15Hz RL = 5KΩ 94 106 dB
BANDWIDTH, open loop 1.6 MHz
POWER BANDWIDTH CC = 10pf, 280V p-p 26 kHz
PHASE MARGIN Full temperature range 60 °

OUTPUT

VOLTAGE SWING IO = 40mA ±VS–12 ±VS–10 V
CURRENT, peak

5

120 mA
CURRENT, continuous 60 mA
SETTLING TIME to .1% CC = 10pF, 10V step, AV = –10 12 µs
SLEW RATE CC = OPEN 40 V/µs
CAPACITIVE LOAD AV = +1 10 nF
RESISTANCE6, no load RCL = 0 150 Ω
RESISTANCE6, 20mA load RCL = 0 25 Ω

POWER SUPPLY

VOLTAGE

3

See Note 3 ±50 ±150 ±175 V

CURRENT, quiescent 1.6 2.0 mA

THERMAL

RESISTANCE, AC junction to case
RESISTANCE, DC junction to case

F > 60Hz 6 7 °C/W

F < 60Hz 9 11 °C/W
RESISTANCE, junction to air Full temperature range 25 °C/W
TEMPERATURE RANGE, case Meets full range specifications –25 +85 °C

NOTES: 1. Unless otherwise noted TC = 25°C, CC = 18pF, RC = 2.2KΩ. DC input specifications are ± value given. Power supply voltage is

typical rating.

2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation
to achieve high MTTF.

3. Derate maximum supply voltage .5 V/°C below case temperature of 25°C. No derating is needed above TC = 25°C.

4. Sample tested by wafer to 95%.

5. Guaranteed but not tested.

6. The selected value of RCL must be added to the values given for total output resistance.

CAUTION

The PA44 is constructed from MOSFET transistors. ESD handling procedures must be observed.

APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: [phone]