- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367753 > PA83 Voltage-Feedback Operational Amplifier PDF資料下載
參數(shù)資料
| 型號： | PA83 |
| 英文描述： | Voltage-Feedback Operational Amplifier |
| 中文描述： | 電壓反饋運算放大器 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大?。?/td> | 94K |
| 代理商： | PA83 |
OPERATING
CONSIDERATIONS
PA83
PA83A
100
300
200
20
30
40
50
100
200
150
250
150
120
80
70
INTERNAL VOLTAGE DROP, SUPPLY TO OUTPUT (V)
O
S
–
V
S
(
INTERNAL CURRENT LIMIT
t=1m
SECONDBREAKDOWN
t= 5ms
sead tae
INDUCTIVE LOADS
Two external diodes as shown in Figure 1, are required to
protect these amplifiers against flyback (kickback) pulses
exceeding the supply voltages of the amplifier when driving
inductive loads. For component selection, these external
diodes must be very quick, such as ultra fast recovery diodes
with no more than 200 nanoseconds of reverse recovery time.
Be sure the diode voltage rating is greater than the total of both
supplies. The diode will turn on to divert the flyback energy into
the supply rails thus protecting the output transistors from
destruction due to reverse bias.
A note of caution about the supply. The energy of the flyback
pulse must be absorbed by the power supply. As a result, a
transient will be superimposed on the supply voltage, the
magnitude of the transient being a function of its transient
impedance and current sinking capability. If the supply voltage
plus transient exceeds the maximum supply rating or if the AC
impedance of the supply is unknown, it is best to clamp the
output and the supply with a zener diode to absorb the
transient.
4. The output stage is protected against transient flyback.
However, for protection against sustained, high energy
flyback, external fast-recovery diodes should be used.
GENERAL
Please read Application Note 1, which covers stability,
supplies, heatsinking, mounting, current limit, SOA interpreta-
tion, and specification interpretation. Additional information
can be found in the application notes. For information on the
package outline, heatsinks, and mounting hardware, consult
the
“
Accessory and Package Mechanical Data
”
section of the
handbook.
SAFE OPERATING AREA (SOA)
The bipolar output stage of this high voltage amplifier has
two distinct limitations.
1. The internal current limit, which limits maximum available
output current.
2. The second breakdown effect, which occurs whenever the
simultaneous collector current and collector-emitter voltage
exceed specified limits.
The SOA curves combine the effect of these limits. For a
given application, the direction and magnitude of the output
current should be calculated or measured and checked against
the SOA curves. This is simple for resistive loads but more
complex for reactive and EMF generating loads. However, the
following guidelines may save extensive analytical efforts:
1. The following capacitive and inductive loads are safe:
±
V
S
C(MAX)
150V
.7 F
125V
2.0
μ
F
100V
5.
μ
F
75V
60
μ
F
50V
ALL
L(MAX)
1.5H
2.5H
6.0H
30H
ALL
2. Short circuits to ground are safe with dual supplies up to
120V or single supplies up to 120V.
3. Short circuits to the supply rails are safe with total supply
voltages up to 120V, e.g.
±
60V.
+V
S
–
V
S
FIGURE 1. PROTECTION, INDUCTIVE LOAD
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
PA83U REV. M JANUARY 2000
2000 Apex Microtechnology Corp.
Powered by ICminer.com Electronic-Library Service CopyRight 2003
相關(guān)PDF資料 |
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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PA83A | 功能描述:運算放大器 - 運放 Linear OpAmp, 300V .075A "A" Grade RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| PA83M | 功能描述:運算放大器 - 運放 Linear OpAmp 300V .075A "M" Grade RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| PA83M/883 | 功能描述:運算放大器 - 運放 Linear Op-Amp 300V .075A DSCC Compliant RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| PA83Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| PA84 | 功能描述:運算放大器 - 運放 Linear Op-Amp 200V/uS RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。