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參數(shù)資料
| 型號： | PA45 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER |
| 中文描述： | 高壓功率運算放大器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 58K |
| 代理商： | PA45 |
APEX MICROTECHNOLOGY CORPORATION
TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
MONOLITHIC MOS TECHNOLOGY
LOW COST
HIGH VOLTAGE OPERATION—150V
HIGH SLEW RATE—27V/
μ
s
HIGH POWER—5A, 85W DISSIPATION
APPLICATIONS
MAGNETIC DEFLECTION
PA AUDIO
MOTOR DRIVE
NOISE CANCELLATION
DESCRIPTION
The PA45 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.
External compensation provides the user flexibility in choosing
optimum gain and bandwidth for the application.
This circuit utilizes a beryllia (BeO) substrate to minimize
thermal resistance. Ultrasonically bonded aluminum wires
provide reliable interconnections at all operating tempera-
tures. The 8-pin TO-3 package is hermetically sealed and
electrically isolated. The use of compressible isolation wash-
ers and/or improper mounting torque will void the product
warranty.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATION
PA45
+80
R
C
C
C
R
CL
R
I
–20
C
F
R
D
R
F
R
S
YOKE
V
I
±2.5A 7μSec Retrace
Horizontal Deflection Coil Amplifiers
1
6
5
4
3
2
7
8
Horizontal deflection amplifiers require both high speed and
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
μ
Sec retrace time, half of which is
required for amplifier slewing. This circuit can perform 15.75
KHz deflection in up to 50
μ
H coils at up to 5A p-p.
PHASE
COMPENSATION
Gain
C
C
10pF
68pF
R
C
1K
1K
≥
10
≥
1
CC1
2
CC2
7
3
5
4
6
8
1
Q19
Q17
Q16
Q15
Q14
Q9
Q10
Q7
D7
Q21
Q20
–V
S
+IN
–IN
Q11
Q12
D4
D2
Q3
D3
D5
Q8
Q13
Q24
D1
Q2
Q5
Q6
+V
S
CURRENT
SENSE
OUTPUT
DRIVE
PATENTED
EXTERNAL CONNECTIONS
TOP VIEW
1
2
3
4
5
6
7
8
+IN
–V
S
OUTPUT
DRIVE
–IN
CC2
C IS NPO RATED
FOR FULL SUPPLY VOLTAGE.
R
CL
OUTPUT
CURRENT
SENSE
CC1
+V
S
C
C
R
C
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
M I C R O T E C H N O L O G Y
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
PA45
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