Apex PA93 Datasheet

HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

MICROTECHNOLOGY

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

FEA TURES

• HIGH VOLTAGE — 400V (±200V)

• LOW QUIESCENT CURRENT — 10mA

• HIGH OUTPUT CURRENT — 8A

• PROGRAMMABLE CURRENT LIMIT

APPLICATIONS

• PIEZOELECTRIC POSITIONING

• HIGH VOLTAGE INSTRUMENTATION

• ELECTROSTATIC TRANSDUCERS

• PROGRAMMABLE POWER SUPPLIES UP TO 390V

DESCRIPTION

The PA93 is a high voltage, low quiescent current MOSFET
operational amplifier designed as a low cost solution for driving
continuous output currents up to 8A and pulse currents up to
14A. The safe operating area (SOA) has no second break­down limitations and can be observed for all type loads by
choosing an appropriate current limiting resistor. The MOSFET
output stage is biased AB for linear operation. External com­pensation provides flexibility in choosing bandwidth and slew
rate for the application. APEX’s Power SIP package uses a
minimum of board space allowing for high density circuit
boards.

PA93

TYPICAL APPLICATION

R

F

+V

S

R

IN

COMPUTER

FOCUS

COMMAND

VOLTAGE

LOW POWER, PIEZOELECTRIC POSITIONING

11,12

1

9,10

6

R

CL

PA93

2

7,8

–V

S

PIEZO DRIVE

V

OUT

EQUIVALENT SCHEMATIC

12

11

+V

–IN

+IN

–V

S

1

2

S

7
8

R1 R2 C1 R3

Q1 Q2

Q6

Q5

R5

R8 R9

Q15

R11 R12

4

CC1

CC2

R6

Piezo positioning may be applied to the focusing of seg­mented mirror systems. The composite mirror may be com­posed of hundreds of elements, each requiring focusing under
computer control. In such complex systems the PA93 reduces
the costs of power supplies and cooling with its advantages of
low cost and low quiescent power consumption while increas­ing circuit density with the SIP package.

Q3

5

Q8

Q11

Q13

Q12

3
I

Q

Q16

R4

R10

R7

Q4
ILIM

9

10

6

OUT

Q14

PHASE COMPENSATION

GAIN

≥1 220pF
≥2

≥4

≥17

*C

Never to be < 10pF. C

c

voltage +V to –Vs. Use ceramic NPO (COG) type.

Cc*R

c

100Ω

100pF

47pF
10pF

100Ω

0Ω
0Ω

To be rated for the full supply

c

EXTERNAL CONNECTIONS Package: SIP03

+V

11

12

*

s

12345678910

–IN +IN

R

I

Q

(See text.)

c

C

c

R

CL

TO LOAD

AND FEEDBACK

–V

*

s

* Bypassing required.

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

PA93

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +VS to –V
OUTPUT CURRENT, source, sink, peak 14A, within SOA

S

400V

POWER DISSIPATION, continuous @ TC = 25°C 125W
INPUT VOLTAGE, differential ±20V
INPUT VOLTAGE, common mode ±V
TEMPERATURE, pin solder - 10s max 220°C
TEMPERATURE, junction

2

S

150°C
TEMPERATURE, storage –65 to +150°C
OPERATING TEMPERATURE RANGE, case –55 to +125°C

SPECIFICATIONS

PARAMETER TEST CONDITIONS
INPUT

OFFSET VOLTAGE, initial 210mV
OFFSET VOLTAGE, vs. temperature Full temperature range 15 50 µV/°C
OFFSET VOLTAGE, vs. supply 10 25 µV/V
OFFSET VOLTAGE, vs. time 75 µV/√kh
BIAS CURRENT, initial 200 2000 pA
BIAS CURRENT, vs. supply 4 pA/V
OFFSET CURRENT, initial 50 500 pA
INPUT IMPEDANCE, DC 10
INPUT CAPACITANCE 4pF
COMMON MODE VOLTAGE RANGE

3

COMMON MODE REJECTION, DC VCM = ±90V 80 98 dB
NOISE 100KHz BW, RS = 1KΩ, CC = 10pF 1 µVrms

GAIN

OPEN LOOP, @ 15Hz RL = 2KΩ, CC = 10pF 94 111 dB
GAIN BANDWIDTH PRODUCT at 1MHz RL = 2KΩ, CC = 10pF 12 MHz
POWER BANDWIDTH RL = 2KΩ, CC = 10pF 30 kHz
PHASE MARGIN Full temperature range 60 °

OUTPUT

VOLTAGE SWING

3

IO = 8A ±VS 12 ±VS 10 V
CURRENT, continuous 8 A
SLEW RATE, AV = 100 CC = 10pF 50 V/µs
CAPACITIVE LOAD, AV = +1 Full temperature range 1 nf
SETTLING TIME to .1% CC = 10pF, 2V step 1 µs
RESISTANCE, no load 10 Ω

POWER SUPPLY

VOLTAGE

5

See note 5 ±40 ±150 ±200 V
CURRENT, quiescent, 10 14 mA

THERMAL

RESISTANCE, AC, junction to case

4

Full temperature range, F > 60Hz .7 °C/W
RESISTANCE, DC, junction to case Full temperature range, F < 60Hz 1 °C/W
RESISTANCE, junction to air Full temperature range 30 °C/W
TEMPERATURE RANGE, case Meets full range specifications –25 +85 °C

1

MIN TYP MAX UNITS

11

±

±VS 15 V

Ω

±±

NOTES: 1. Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating. RC = 100

CC = 220pF.

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

3. +VS and –VS denote the positive and negative power supply rail respectively.

4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.

5. Derate max supply rating .625 V/°C below 25°C case. No derating needed above 25°C case.

CAUTION

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

The PA93 is constructed from MOSFET transistors. ESD handling procedures must be observed.