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OPERATIONAL AMPLIFIERS. PA08A Datasheet |
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MICROTECHNOLOGY
POWER OPERATIONAL AMPLIFIERS
PA08 • PA08A
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
FEATURES
• WIDE SUPPLY RANGE — ±15V to ±150V
• PROGRAMMABLE OUTPUT CURRENT LIMIT
• HIGH OUTPUT CURRENT — Up to ±150mA
• LOW BIAS CURRENT — FET Input
APPLICATIONS
• HIGH VOLTAGE INSTRUMENTATION
• ELECTROSTATIC TRANSDUCERS & DEFLECTION
• PROGRAMMABLE POWER SUPPLIES UP TO 290V
• ANALOG SIMULATORS
DESCRIPTION
The PA08 is a high voltage operational amplifier designed
for output voltage swings of up to ±145V with a dual (±) supply
or 290V with a single supply. High accuracy is achieved with
a cascode input circuit configuration. All internal biasing is
referenced to a zener diode fed by a FET constant current
source. As a result, the PA08 features an unprecedented
supply range and excellent supply rejection. The output
stage is biased-on for linear operation. Internal phase com-
pensation assures stability at all gain settings. The safe
operating area (SOA) can be observed with all types of loads
by choosing the appropriate current limiting resistors. For
operation into inductive loads, two external flyback pulse
protection diodes are recommended. A heatsink may be
necessary to maintain the proper case temperature under
normal operating conditions.
This hybrid integrated circuit utilizes beryllia (BeO) sub-
strate, thick film resistors, ceramic capacitors and semicon-
ductor chips to maximize reliability, minimize size and give
top performance. Ultrasonically bonded aluminum wires pro-
vide reliable interconnections at all operating temperatures.
The 8-pin TO-3 package is hermetically sealed and electri-
cally isolated. The use of compressible thermal isolation
washers and/or improper mounting torque will void the prod-
uct warranty. Please see “General Operating Considerations”.
EQUIVALENT SCHEMATIC
3
7
Q1
Q2
Q5
D1
Q3
Q4
C3
C1
Q8
5
4 Q12A
Q9
C4
C2
Q10
Q12B
Q7
Q11 Q19
Q15 Q16
D2
Q6
2
1
8
Q17
6
TYPICAL APPLICATION
+132V
DAC
110K
+132V
±1mA
PA08
8.2 Ω
+VS
D.U.T.
-132V
8.2 Ω
-VS
-132V
ATE PIN DRIVER
The PA08 as a pin driver is capable of supplying high test
voltages to a device under test (DUT). Due to the possibility of
short circuits to any terminal of the DUT, current limit must be
set to be safe when limiting with a supply to output voltage
differential equal to the amplifier supply plus the largest
magnitude voltage applied to any other pin of the DUT. In
addition, flyback diodes are recommended when the output of
the amplifier exits any equipment enclosure to prevent dam-
age due to electrostatic discharges. Refer to Application Note
7 for details on accuracy considerations of this circuit.
EXTERNAL CONNECTIONS
+VS
3
RT +IN 4
CL+
2
OUT
1
R CL+
TOP VIEW
OUTPUT
–IN 5
RS
6
–VS
8
CL–
R CL–
7
( )BAL
RS= +VS + –VS RT /1.6
NOTE: Input offset voltage trim optional. R T = 10K Ω MAX
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
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PA08 • PA08A
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to –VS
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal at TC = 25°C
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder - 10s max
TEMPERATURE, junction1
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
300V
200mA
17.5W
±50V
±VS
300°C
200°C
–65 to +150°C
–55 to +125°C
SPECIFICATIONS
PARAMETER
TEST CONDITIONS 2
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
OFFSET VOLTAGE, vs. time
BIAS CURRENT, initial3
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial3
INPUT IMPEDANCE, DC
INPUT CAPACITANCE
COMMON MODE VOLTAGE RANGE4
COMMON MODE REJECTION, DC
GAIN
TC = 25°C
TC = –25°C to +85°C
TC = 25°C
TC = 25°C
TC = 25°C
TC = 25°C
TC = 25°C
TC = 25°C
TC = 25°C
TC = –25°C to +85°C
TC = –25°C to +85°C, VCM = ±90V
OPEN LOOP GAIN at 10Hz
TC = 25°C, RL = ∞
OPEN LOOP GAIN at 10Hz
TC = 25°C, RL = 1.2KΩ
GAIN BANDWIDTH PRODUCT at 1MHz TC = 25°C, RL = 1.2KΩ
POWER BANDWIDTH
TC = 25°C, RL = 1.2KΩ
PHASE MARGIN
TC = –25 to +85°C
OUTPUT
VOLTAGE SWING4
VOLTAGE SWING4
VOLTAGE SWING4
CURRENT, peak
SLEW RATE
CAPACITIVE LOAD, AV = 1
CAPACITIVE LOAD, AV > 4
SETTLING TIME to .1%
POWER SUPPLY
TC = 25°C, IO = 150mA
TC = –25o C to +85oC, IO = ±75mA
TC = –25o C to +85oC, IO = ±20mA
TC = 85°C
TC = 25°C
TC = –25 to +85°C
TC = –25 to +85°C
TC = 25°C, RL= 1.2KΩ, 2V step
VOLTAGE
CURRENT, quiescent
THERMAL
TC = –55 to +125°C
TC = 25°C
RESISTANCE, AC junction to case5
RESISTANCE, DC junction to case
RESISTANCE, junction to air
TEMPERATURE RANGE, case
TC = –55 to +125°C, F > 60Hz
TC = –55 to +125°C, F < 60Hz
TC = –55 to +125°C
Meets full range specification
PA08
MIN TYP
±VS–10
±.5
±15
±.5
±75
5
.01
±2.5
105
4
130
118
96 111
5
90
60
±VS–15
±VS–10
±VS–5
150
±VS–8
±VS–5
±VS–3
30
1
±15 ±100
6
3.8
6.0
30
–25
MAX
±2
±30
50
±50
10
SOA
±150
8.5
6.5
85
PA08A
MIN TYP
±.25
±5
*
*
3
*
±1.5
*
*
*
*
*
**
*
*
*
**
**
**
*
20 *
*
**
*
*
*
*
*
MAX UNITS
±.5 mV
±10 µV/°C
2 µV/V
µV/√kh
10 pA
pA/V
±10 pA
MΩ
pF
V
dB
dB
dB
MHz
kHz
°
V
V
V
mA
V/µs
* nF
*
µs
*V
* mA
°C/W
* °C/W
°C/W
* °C
NOTES: *
1.
2.
3.
4.
5.
The specification of PA08A is identical to the specification for PA08 in applicable column to the left.
Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to
achieve high MTTF.
The power supply voltage specified under typical (TYP) applies unless otherwise noted.
Doubles for every 10oC of temperature increase.
+VS and –VS denote the positive and negative supply rail respectively.
Rating applies only if output current alternates between both output transistors at a rate faster than 60Hz.
CAUTION
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or
subject to temperatures in excess of 850°C to avoid generating toxic fumes.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
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