PA44 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

MICROTECHNOLOGY
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
PA44
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX [phone]
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
+V_S
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
–V_S
12
SUB
EXTERNAL CONNECTIONS
R_LIM
R_LIM
100Ω
R_C
C_C
21
19
17
15
OUT COMP COMP
I_LIM
*
13
+V_S
C_S
330pF
–IN
+IN
–V_S
1
5
7
12
NC
TOP VIEW
*
* Supply bypassing required. See General Operating Considerations.
PHASE COMPENSATION
Gain
1
C_C
18pF
R_C
2.2KΩ
≥10 10pF 2.2KΩ
≥30 3.3pF 2.2KΩ
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]