Apex PA97 Datasheet

HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

F

R

PA97

IN

R

PIEZO DRIVE

S

–V

S

+V

OUT

V

COMPUTER

FOCUS

COMMAND

VOLTAGE

MICROTECHNOLOGY

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

FEATURES

• HIGH VOLTAGE — 900V (±450V)

• LOW QUIESCENT CURRENT — 600µA

• HIGH OUTPUT CURRENT — 10mA

APPLICATIONS

• MASS SPECTROMETERS

• SCANNING COILS

• HIGH VOLTAGE INSTRUMENTATION

• PROGRAMMABLE POWER SUPPLIES UP TO 880V

• SEMICONDUCTOR MEASUREMENT EQUIPMENT

PA97

PATENT PENDING

DESCRIPTION

The PA97 is a high voltage MOSFET operational amplifier
designed as a low cost solution for driving continuous output
currents up to 10mA and pulse currents to 15mA into capaci­tive loads. The safe operating area (SOA) has no second
breakdown limitations. The MOSFET output stage is biased
class C for low quiescent current operation. External compen­sation provides flexibility in choosing bandwidth and slew rate
for the application. APEX’s SIP05 package uses a minimum of
board space allowing for high density circuit boards.

EQUIVALENT SCHEMATIC

12

+V

S

1

–IN

2

+IN

R1 R2 C1 R3

Q1 Q2

Q6

Q5

Q6

R5

R7 R8

Q8

CC1

4

Q7

R6

6

CC2

Q3

Q9

R4

R9

Q4

8

OUT

Q10

TYPICAL APPLICATION

LOW POWER, PIEZOELECTRIC POSITIONING

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 PA97 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.

EXTERNAL CONNECTIONS PACKAGE: SIP05

–IN +IN CC1 CC2 OUT –Vs +Vs

12 4 6 8 10

*

C

c

**

12

–V

10

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

R10 R11

S

*

.01µF or greater ceramic power supply bypassing required.

Cc =10pF minimum, 1kV NPO(COG)

PHASE COMPENSATION

GAIN

≥

10 10pF

C

C

PA97

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +VS to –V
OUTPUT CURRENT, source, sink 15mA, within SOA
POWER DISSIPATION, continuous @ TC = 25°C5W
INPUT VOLTAGE, differential

S

3

INPUT VOLTAGE, common mode (See Text) ±V
TEMPERATURE, pin solder - 10s max 220°C
TEMPERATURE, junction

2

900V

±20V

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 .5 5 mV
OFFSET VOLTAGE, vs. temperature Full temperature range 10 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 RANGE3VS=±250V See Note 3 ±VS 30 V
COMMON MODE REJECTION, DC VCM = ±90V 80 98 dB
NOISE 10KHz BW, RS = 1KΩ, CC = 10pF 2 µVrms

GAIN

OPEN LOOP, @ 15Hz RL = 5KΩ, CC = 10pF 94 111 dB
GAIN BANDWIDTH PRODUCT at 1MHz RL = 5KΩ, CC = 10pF 1 MHz
POWER BANDWIDTH RL = 5KΩ, CC = 10pF 2 kHz
PHASE MARGIN, AV = 100 Full temperature range 60 °

OUTPUT

VOLTAGE SWING

3

IO = 10mA ±VS 24 ±VS 20 V
CURRENT, continuous 10 mA
SLEW RATE, AV = 100 CC = 10pF 8 V/µs
SETTLING TIME to .1% CC = 10pF, 2V step 2 µs
RESISTANCE 10mA Load 100 Ω

POWER SUPPLY

VOLTAGE

5

See note 5 ±50 ±300 ±450 V
CURRENT, quiescent, .6 1 mA

THERMAL

RESISTANCE, AC, junction to case

4

Full temperature range, F > 60Hz 20 °C/W
RESISTANCE, DC, junction to case Full temperature range, F < 60Hz 25 °C/W
RESISTANCE, junction to air Full temperature range 40 °C/W
TEMPERATURE RANGE, case –25 +85 °C

1

MIN TYP MAX UNITS

11

Ω

±

±

±

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

CC = 10pF.

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

3. Although supply voltages can range up to ± 450V the input pins cannot swing over this range. The input pins must be at least
30V from either supply rail but not more than 500V from either supply rail. See text for a more complete description of the
common mode voltage range.

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 PA97 is constructed from MOSFET transistors. ESD handling procedures must be observed.