PA40 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

MICROTECHNOLOGY
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
PA40
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX [phone]
FEATURES
• MONOLITHIC MOS TECHNOLOGY
• LOW COST
• HIGH VOLTAGE OPERATION—250V
• LOW QUIESCENT CURRENT—2mA
• NO SECOND BREAKDOWN
• HIGH OUTPUT CURRENT—120 mA PEAK
APPLICATIONS
• TELEPHONE RING GENERATOR
• PIEZO ELECTRIC POSITIONING
• ELECTROSTATIC TRANSDUCER & DEFLECTION
• DEFORMABLE MIRROR FOCUSING
DESCRIPTION
The PA40 is a high voltage monolithic MOSFET operational
amplifier 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. External compensation provides the
user flexibility in choosing optimum gain and bandwidth
for the application.
The PA40 is packaged in Apex's 7 LEAD TO220 package.
The metal back of the package is tied to –Vs. The 15 mil
minimum spacing of the TO220 package is adequate to
stand-off the 250V rating of the PA40. The user must insure
that a minimum of 11 mils spacing is maintained between
pins for the circuit board artwork. If spacing is less than 11
mils, the voltage must be derated.
TYPICAL APPLICATION
2.67K
140V
100K
IN6300A
15V
2.5K + 15
.22
10K 10K MUR120
4
56
7
ICL8038
8
10 11
*
2
IN6300A
82K
MUR130
3.3pF
2.2K
PA40
90Vrms
100
.22
330pf
* 1.5 µF @ 16Hz
1.2 µF @ 20Hz ^–15V
MUR120 _–140V
MUR130
Telephone Ring Generator
The PA40 is set for a gain of 38.5 boosting the 2.33V signal
to 90V. The recommended compensation for gains above 30
is used. If capacitive loading is at least 330pF at all times, the
recommended snubber network may be omitted.
EQUIVALENT SCHEMATIC
D1
Q1
Q2
Q4
Q5
1
–IN
D2 D3 D4 D5
2
+IN
Q11
Q12
6 Q6
COMP
COMP Q8
7
Q13
SUB
EXTERNAL CONNECTIONS
3
+V_S
Q3
I_OUT
5
Q10
Q14
–V_S
4
PHASE COMPENSATION
Gain
≤1
≥ 10
≥ ≥30
C_C
18pF
10pF
3.3pF
R_C
2.2K
2.2K
2.2K
NOTE: At gains above 30, Rc and Cc
may be omitted.
1 2 3 4 5 67
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