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参数资料
| 型号： | PA83 |
| 英文描述： | Voltage-Feedback Operational Amplifier |
| 中文描述： | 电压反馈运算放大器 |
| 文件页数： | 1/4页 |
| 文件大小： | 94K |
| 代理商： | PA83 |
APEX MICROTECHNOLOGY CORPORATION
TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
LOW BIAS CURRENT, LOW NOISE — FET Input
FULLY PROTECTED INPUT — Up to
±
150V
WIDE SUPPLY RANGE —
±
15V to
±
150V
APPLICATIONS
HIGH VOLTAGE INSTRUMENTATION
ELECTROSTATIC TRANSDUCERS & DEFLECTION
PROGRAMMABLE POWER SUPPLIES UP TO 290V
ANALOG SIMULATORS
DESCRIPTION
The PA83 is a high voltage operational amplifier designed
for output voltage swings up to
±
145V with a dual (
±
) supply or
290V with a single supply. Its input stage is protected against
transient and steady state overvoltages up to and including the
supply rails. High accuracy is achieved with a cascode input
circuit configuration. All internal biasing is referenced to a
zener diode fed by a FET constant current source. As a result,
the PA83 features an unprecedented supply range and excel-
lent supply rejection. The output stage is biased in the class A/
B mode for linear operation. Internal phase compensation
assures stability at all gain settings without need for external
components. Fixed current limits protect these amplifiers
against shorts to common at supply voltages up to 120V. For
operation into inductive loads, two external flyback pulse
protection diodes are recommended. However, a heatsink
may be necessary to maintain the proper case temperature
under normal operating conditions.
This hybrid circuit utilizes beryllia (BeO) substrates, thick
(cermet) film resistors, ceramic capacitors and silicon semi-
conductor chips to maximize reliability, minimize size and give
top performance. Ultrasonically bonded aluminum wires pro-
vide reliable interconnections at all operating temperatures.
The 8-pin TO-3 package is hermetically sealed and electrically
isolated. The use of compressible thermal isolation washers
and/or improper mounting torque voids product warranty.
Please see Application Note 1 “General Operating Consider-
ations”.
TYPICAL APPLICATION
While piezo electric transducers present a complex imped-
ance, they are often primarily capacitive at useful frequencies.
Due to this capacitance, the speed limitation for a given
transducer/amplifier combination may well stem from limited
current drive rather than power bandwidth restrictions. With its
drive capability of 75mA, the PA83 can drive transducers
having up to 2nF of capacitance at 40kHz at maximum output
voltage. In the event the transducer may be subject to shock
or vibration, flyback diodes, voltage clamps or other protection
networks must be added to protect the amplifier from high
voltages which may be generated.
EQUIVALENT SCHEMATIC
+150V
–
150V
100K
A1
PA83
SIMPLE PIEZO ELECTRIC TRANSDUCER DRIVE
±5V
3.57K
GATED
OSCILLATOR
I =
t
V * C
EXTERNAL CONNECTIONS
TOP VIEW
1
2
3
4
5
6
7
8
–
V
S
+IN
–
IN
BAL
N.C.
OUTPUT
BAL
+V
S
NOTES:
1. Pin 8 not internally connected.
2. Input offset trimpot optional.
Recommended value 100K .
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 AMPLIFIERS
PA83 PA83A
2
7
4
3
5
6
1
Q1
Q2
D1
D2
Q15
Q12B
Q9
C4
Q8
Q13
Q4
Q3
C1
Q16
Q17
Q5
C5
Q12A
Q14
C6
C2
C3
Q10
Q6
Q7
Q11
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相关PDF资料 |
PDF描述 |
|---|---|
| PA84M | Voltage-Feedback Operational Amplifier |
| PA84Q | Voltage-Feedback Operational Amplifier |
| PA84 | POWER OPERATIONAL AMPLIFIERS |
| PA84A | POWER OPERATIONAL AMPLIFIERS |
| PA84S | POWER OPERATIONAL AMPLIFIERS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PA83A | 功能描述:运算放大器 - 运放 Linear OpAmp, 300V .075A "A" Grade RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| PA83M | 功能描述:运算放大器 - 运放 Linear OpAmp 300V .075A "M" Grade RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| PA83M/883 | 功能描述:运算放大器 - 运放 Linear Op-Amp 300V .075A DSCC Compliant RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| PA83Q | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| PA84 | 功能描述:运算放大器 - 运放 Linear Op-Amp 200V/uS RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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