Apex PA42A, PA41, PA41A, PA42 Datasheet
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS
PA41/PA42 • PA41A/PA42A
MICROTECHNOLOGY
FEATURES
• MONOLITHIC MOS TECHNOLOGY
• LOW COST
• HIGH VOLTAGE OPERATION—350V
• LOW QUIESCENT CURRENT—2mA
• NO SECOND BREAKDOWN
• HIGH OUTPUT CURRENT—120 mA PEAK
• AVAILABLE IN DIE FORM—PA41DIE
APPLICATIONS
• PIEZO ELECTRIC POSITIONING
• ELECTROSTATIC TRANSDUCER & DEFLECTION
• DEFORMABLE MIRROR FOCUSING
• BIOCHEMISTRY STIMULATORS
• COMPUTER TO VACUUM TUBE INTERFACE
DESCRIPTION
The PA41/42 are high voltage monolithic MOSFET operational amplifiers 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 PA41 is packaged in a hermetically sealed TO-3 and all
circuitry is isolated from the case by an aluminum nitride (AlN)
substrate.
The PA42 is packaged in APEX’s hermetic ceramic SIP10
package.
EQUIVALENT SCHEMATIC
Q1
Q5Q4
(1)
(2)
5
–IN
6
+IN
D2 D3 D4 D5
Q11
(8)
COMP
COMP
(9)
Q12
5
PA41 PIN NUMBER
(1)
PA42 PIN NUMBER
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
8
+V
I
LIM
1
4
OUT
–V
7
(5)
S
S
D1
Q2
2
Q6
Q8
3
Q13
Q3
Q7
Q9
Q10
Q14
(6)
(7)
(10)
TYPICAL APPLICATION
R
V
IN
20R
+175
A1
PA41/42
2.2K
10pF
R
180
100Ω
330pF
CL
PIEZO
TRANSDUCER
LOW COST 660V p-p
–175
PIEZO DRIVE
Two PA41/42 amplifiers operated as a bridge driver for a
piezo transducer provides a low cost 660 volt total drive capability. The RN CN network serves to raise the apparent gain of A2
at high frequencies. If R
is set equal to R the amplifiers can be
N
compensated identically and will have matching bandwidths.
10pF
R
CL
180
100Ω
330pF
20R
20R
2.2K
PA41/42
+175
A2
Rn
Cn
–175
EXTERNAL CONNECTIONS
R
CL
C
C
COMP
2
7
–V
S
12345678910
I
LIM
1
C
330pF
8
R
+V
100Ω
S
NC –V
S
C , C ARE NPO RATED
S
FOR FULL SUPPLY VOLTAGE.
R
TOP VIEW
S
COMP
OUT
PA41
PA42
–IN
R
4
5
C
3
TOP VIEW
6
+IN
–IN +IN
NOTE: PA41 Recommended mounting torque is 4-7 in•lbs
(.45 -.79 N•m)
CAUTION: The use of compressible, thermally conductive
insulators may void warranty.
PHASE
COMPENSATION
Gain C
1 18pF 2.2KΩ
≥10 10pF 2.2KΩ
≥30 3.3pF 2.2KΩ
S
=
CL
I
+V
LIM
S
R
S
100Ω
C
S
330pf
C
C
3
I
LIM
C
C
C
C
R
C
C
C
R
CL
R
C
OUTNC
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
ABSOLUTE MAXIMUM RATINGS
PA41/PA42 • PA41A/PA42A
PA41/PA41A PA42/PA42A
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to –V
OUTPUT CURRENT, continuous within SOA 60 mA 60 mA
S
OUTPUT CURRENT, peak 120 mA 120 mA
POWER DISSIPATION, continuous @ T
INPUT VOLTAGE, differential ±16 V ±16 V
= 25°C 12W 9W
C
INPUT VOLTAGE, common mode ±V
TEMPERATURE, pin solder – 10 sec 300°C 220°C
TEMPERATURE, junction
2
TEMPERATURE, storage –65 to +150°C –65 to +150°C
TEMPERATURE RANGE, powered (case) –40 to +125°C –40 to +125°C
SPECIFICATIONS
PARAMETER TEST CONDITIONS
1
PA41/PA42 PA41A/PA42A
MIN TYP MAX MIN TYP MAX UNITS
INPUT
OFFSET VOLTAGE, initial 25 40 15 30 mV
OFFSET VOLTAGE, vs. temperature
4, 7
Full temperature range 70 130 40/* 65/* µV/°C
OFFSET VOLTAGE, vs supply 20 32 * * µV/V
OFFSET VOLTAGE, vs time 75 * µV √kh
BIAS CURRENT, initial
BIAS CURRENT, vs supply .2/.5 .5/50 * * pA/V
OFFSET CURRENT, initial
INPUT IMPEDANCE, DC 10
7
7
5/100
50/2000
2.5/100 50/400 * * pA
11
INPUT CAPACITANCE 5 * pF
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 ±VS–10
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 .9 1.4 1.8 mA
THERMAL
PA41
RESISTANCE, AC junction to case
PA42
RESISTANCE, AC junction to case
PA41
RESISTANCE, DC junction to case
PA42
RESISTANCE, DC junction to case
F > 60Hz 5.4 6.5 * * °C/W
F > 60Hz 7 10 * * °C/W
F < 60Hz 9 10.4 * * °C/W
F < 60Hz 12 14 * * °C/W
PA41 RESISTANCE, junction to air Full temperature range 30 * °C/W
PA42 RESISTANCE, junction to air Full temperature range 55 * °C/W
TEMPERATURE RANGE, case Meets full range specifications –25 +85 * * °C
350V 350V
S
150°C 150°C
SPECIFICATIONS
±V
S
**pA
* Ω
±VS–8.5
V
NOTES: * The specification for PA41A/PA42A is identical to the specification for PA41/PA42 in applicable column to the left.
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. For guidance, refer to heatsink data sheet.
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.
7. Specifications separated by / indicate values for the PA41 and PA42 respectively.
CAUTION
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
The PA41/PA42 is constructed from MOSFET transistors. ESD handling procedures must be observed.
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