PA44 查看數據表（PDF） - Apex Microtechnology
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PA44 Datasheet PDF : 4 Pages
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MICROTECHNOLOGY
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
PA44
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
FEATURES
• SURFACE MOUNT PACKAGE
• MONOLITHIC MOS TECHNOLOGY
• LOW COST
• HIGH VOLTAGE OPERATION—350V
• 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 PA44 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 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 PA44 is packaged in Apex's PSOP1 non-hermetic
surface mountable dual in line package. The metal back of the
package is tied to –Vs.
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
PA44
90Vrms
27
100
.22
330pf
* 1.5 µF @ 16Hz
1.2 µF @ 20Hz
–15V
MUR120 –140V
MUR130
Telephone Ring Generator
The PA44 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. The 27 ohm
resistor sets current limit to a nominal value of 111mA to insure
peak currents out of at least 78mA.
EQUIVALENT SCHEMATIC
13
D1
+VS
Q1
Q2
Q3
Q4
Q5
5
–IN
D2 D3 D4 D5
7
+IN
Q11
Q12
19 Q6
COMP
COMP Q8
17
Q13
Q7
Q9
Q10
I LIM
15
21
OUT
Q14
–VS
12
SUB
EXTERNAL CONNECTIONS
RLIM
RLIM
100Ω
RC
CC
21
19
17
15
OUT COMP COMP
ILIM
*
13
+VS
CS
330pF
–IN
+IN
–VS
1
5
7
12
NC
TOP VIEW
*
* Supply bypassing required. See General Operating Considerations.
PHASE COMPENSATION
Gain
1
CC
18pF
RC
2.2KΩ
≥10 10pF 2.2KΩ
≥30 3.3pF 2.2KΩ
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
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