PA46 Apex Microtechnology, PA46 Datasheet

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PA46

Manufacturer Part Number
PA46
Description
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
Manufacturer
Apex Microtechnology
Datasheet

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FEATURES
• MONOLITHIC MOS TECHNOLOGY
• PROGRAMMABLE I
• LOW COST
• HIGH VOLTAGE OPERATION—150V
• HIGH SLEW RATE—27V/ s
• HIGH POWER—5A, 75W DISSIPATION
APPLICATIONS
• MAGNETIC DEFLECTION
• PA AUDIO
• MOTOR DRIVE
• NOISE CANCELLATION
DESCRIPTION
amplifier that achieves performance levels unavailable even in
many hybrid amplifier designs. Inputs are protected from
excessive common mode and differential mode voltages as
well as static discharge. 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. Class C
operation with resulting low quiescent current is pin program-
mable. A shutdown input turns off the output stage.
minimize thermal resistance. The 10-pin power SIP package
is electrically isolated.
EQUIVALENT SCHEMATIC
–V
M I C R O T E C H N O L O G Y
+V
–IN
+IN
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
6
D4
1
2
4
S
S
The PA46 is a high power monolithic MOSFET operational
This circuit utilizes a beryllia oxide (BeO) substrate to
Q20
D2
Q3
Q11
Q12
D3
Q21
D5
D1
D7
CC1
9
8
Q24
CC2
Q8
Q
(5 or 50 mA MAX)
Q13
I
7
SHDN
Q
3
H T T P : / / W W W . A P E X M I C R O T E C H . C O M
Q2
Q5
Q14
Q6
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
Q9
Q16
Q15
Q10
Q19
Q17
Q7
OUTPUT
DRIVE
10
CURRENT
SENSE
5
TYPICAL APPLICATION
low distortion. The speed at which current can be changed in a
deflection coil is a function of the voltage available from the op
amp. In this application an 80 volt power supply is used for the
retrace polarity to provide a 7 Sec retrace time, half of which is
required for amplifier slewing. This circuit can perform 15.75
KHz deflection in up to 50 H coils at up to 5A p-p.
EXTERNAL CONNECTIONS
V
I
C
–IN
Horizontal deflection amplifiers require both high speed and
PA46
C
1
is NPO rated for full suppy voltage.
+IN SHDN –V
2
R
I
( 8 0 0 ) 5 4 6 - A P E X
2
1
Horizontal Deflection Coil Amplifiers
3
6
PA46
4
R
Phase Compensation
Gain
C
10
4
1
S
2.5A 7 Sec Retrace
8
10
OUT +V
–20
+80
5
9
5
C
C
10pF
68pF
C
C
R
CL
6
S
( 8 0 0 ) 5 4 6 - 2 7 3 9
R
I
7
Q
CL
R
1K
1K
R
C
C
C
R
8
C
C1
D
F
R
C
F
9
C2
Package: SIP02
C
C
10
I
LIM
R
YOKE
OUTPUT
S

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PA46 Summary of contents

Page 1

... PA AUDIO • MOTOR DRIVE • NOISE CANCELLATION DESCRIPTION The PA46 is a high power monolithic MOSFET operational amplifier that achieves performance levels unavailable even in many hybrid amplifier designs. Inputs are protected from excessive common mode and differential mode voltages as well as static discharge. 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 ...

Page 2

... Derate maximum supply voltage . below case temperature derating is needed above T CAUTION The PA46 is constructed from MOSFET transistors. ESD handling procedures must be observed. The exposed substrate is beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850 C to avoid generating toxic fumes. ...

Page 3

... 10M 10K 20K 40K 100K 200K FREQUENCY, f (Hz) QUIESCENT CURRENT 2.0 1.5 1.0 0 (pF) TOTAL SUPPLY VOLTAGE OUTPUT VOLTAGE SWING OUTPUT CURRENT, I PA46 10pF 400K 1M 110 130 150 ( (A) O ...

Page 4

... Normally pin the quiescent current in the output stage is disabled. CI This results in lower quiescent current, but also class C biasing of the output stage. PA46U REV. C FEBRUARY 2001 © 2001 Apex Microtechnology Corp. CONSIDERATIONS SAFE OPERATING AREA PULSE CURVES @ 10% DUTY CYCLE MAX ...

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