PA142 Datasheet PDF - Apex Microtechnology
| Part Number | PA142 | |
| Description | (PA141 / PA142) HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS | |
| Manufacturers | Apex Microtechnology | |
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MICROTECHNOLOGY
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS
PA141/PA142 • PA141A/PA142A
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
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—CPA141
APPLICATIONS
8-PIN TO-3
PACKAGE STYLE CE
10-PIN SIP
PACKAGE STYLE DW
• PIEZO ELECTRIC POSITIONING
• ELECTROSTATIC TRANSDUCER & DEFLECTION
• DEFORMABLE MIRROR FOCUSING
• BIOCHEMISTRY STIMULATORS
• COMPUTER TO VACUUM TUBE INTERFACE
TYPICAL APPLICATION
Ref: APPLICATION NOTE 20: "Bridge Mode Operation of Power Amplifiers"
R 20R
20R
V IN +175
2.2K
20R
+175
2.2K
DESCRIPTION
10pF
10pF
The PA141/PA142 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
A1
PA141/142 RCL
180
100 Ω
PIEZO
TRANSDUCER
R CL
A2
PA141/142
180
100 Ω
Rn
Cn
and differential mode voltages. The safe operating
330pF
330pF
area (SOA) has no second breakdown limitations and
can be observed with all type loads by choosing
an appropriate current limiting resistor. External com-
LOW COST 660V p-p
–175
PIEZO DRIVE
–175
pensation provides the user flexibility in choosing
Two PA141/PA142 amplifiers operated as a bridge driver
optimum gain and bandwidth for the application.
for a piezo transducer provides a low cost 660 volt total drive
The PA141 is packaged in a hermetically sealed TO-3
and all circuitry is isolated from the case by an aluminum
nitride (AlN) substrate.
capability. The RN CN network serves to raise the apparent
gain of A2 at high frequencies. If RN is set equal to R the
amplifiers can be compensated identically and will have
The PA142 is packaged in APEX’s hermetic ceramic matching bandwidths.
SIP package.
EXTERNAL CONNECTIONS
EQUIVALENT SCHEMATIC
R CL
PHASE
8 (6)
RC CC
COMPENSATION
D1
+VS
COMP 3
2 COMP
1 I LIM
Gain
1
10
CC
18pF
10pF
RC
2.2K
2.2K
Q1 Q2
OUT 4
30 3.3pF 2.2K
Q3 I LIM
TOP VIEW
CS
330pF
(1) 5
–IN
(2) 6
+IN
Q4 Q5
D2 D3 D4 D5
(8) 2 Q6
COMP
COMP Q8
(9) 3
Q11
Q12
Q13
Q7
Q9
Q10
Q14
5 PA141 PIN NUMBER
(1) PA142 PIN NUMBER
1 (7)
4 (10)
OUT
5
–IN
6
+IN
PA141
7
–VS
8
+VS
RS
100 Ω
CS ,CC ARE NPO RATED
FOR FULL SUPPLY VOLTAGE.
RCL =
3
I LIM
TOP VIEW
1 2 3 4 5 6 7 8 9 10
NC NC –VS +VS ILIM
CC CC OUT
RS
100Ω
RC
–IN +IN
CS
330pf
CC
–VS PA142
7
RCL
(5) NOTE: PA141 Recommended mounting torque is 4-7 in•lbs
(.45 -.79 N•m)
CAUTION: The use of compressible, thermally conductive
insulators may void warranty.
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected]
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OPERATING
CONSIDERATIONS
PA141/PA142 • PA141A/PA142A
SAFE OPERATING AREA (SOA)
The MOSFET output stage of this power operational
amplifier has two distinct limitations:
1. The current handling capability of the die metallization.
2. The temperature of the output MOSFETs.
NOTE: The output stage is protected against transient
flyback. However, for protection against sustained, high energy
flyback, external fast-recovery diodes should be used.
APPLICATION REFERENCES:
For additional technical information please refer to the
following Application Notes:
AN 1: General Operating Considerations
AN 3: Bridge Circuit Drives
AN 25: Driving Capacitive Loads
AN 38: Loop Stability with Reactive Loads
PA141 SOA
200
120
200mS
100
300mS
50
40
30
DC
DC, T
20
DC, T
C = 85°C
10 C = 125°C
5
4
3
PULSE CURVES @ 10% DUTY CYCLE MAX
2
10 20 30 50 100 200 300
500
SUPPLY TO OUTPUT DIFFERENTIAL, VS -VO (V)
PA142 SOA
200
120
100
300mS
2001m0S0mS
50
40
30
DC, T DC
20
10
DC,
T
C
=
C = 85°C
125°C
5
4
3
PULSE CURVES @ 10% DUTY CYCLE MAX
2
10 20 30 50 100 200 300
500
SUPPLY TO OUTPUT DIFFERENTIAL, VS -VO (V)
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PA141/142U REV. A MARCH 2002 © 2002 Apex Microtechnology Corp.
5
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| Download | [ PA142.PDF Datasheet ] | |
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