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參數資料
| 型號： | PA12A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 運算放大器 |
| 英文描述： | POWER OPERATIONAL AMPLIFIERS |
| 中文描述： | 功耗運算放大器 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 106K |
| 代理商： | PA12A |
APEX MICROTECHNOLOGY CORPORATION
TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
LOW THERMAL RESISTANCE — 1.4
°
C/W
CURRENT FOLDOVER PROTECTION — NEW
HIGH TEMPERATURE VERSION — PA12H
EXCELLENT LINEARITY — Class A/B Output
WIDE SUPPLY RANGE —
±
10V to
±
50V
HIGH OUTPUT CURRENT — Up to
±
15A Peak
APPLICATIONS
MOTOR, VALVE AND ACTUATOR CONTROL
MAGNETIC DEFLECTION CIRCUITS UP TO 10A
POWER TRANSDUCERS UP TO 100kHz
TEMPERATURE CONTROL UP TO 360W
PROGRAMMABLE POWER SUPPLIES UP TO 90V
AUDIO AMPLIFIERS UP TO 120W RMS
DESCRIPTION
The PA12 is a state of the art high voltage, very high output
current operational amplifier designed to drive resistive, induc-
tive and capacitive loads. For optimum linearity, especially at
low levels, the output stage is biased for class A/B operation
using a thermistor compensated base-emitter voltage multi-
plier circuit. The safe operating area (SOA) can be observed
for all operating conditions by selection of user program-
mable current limiting resistors. For continuous operation
under load, a heatsink of proper rating is recommended.
This hybrid integrated circuit utilizes thick film (cermet)
resistors, ceramic capacitors and semiconductor chips to
maximize reliability, minimize size and give top performance.
Ultrasonically bonded aluminum wires provide reliable inter-
connections at all operating temperatures. The 8-pin TO-3
package is hermetically sealed and electrically isolated. The
use of compressible isolation washers voids the warranty.
EQUIVALENT SCHEMATIC
3
4
5
6
2
1
7
8
A1
D1
Q1
Q4
Q3
Q5
C1
Q2A
Q2B
Q6B
Q6A
POWER RATING
Not all vendors use the same method to rate the power
handling capability of a Power Op Amp. APEX rates the
internal dissipation, which is consistent with rating methods
used by transistor manufacturers and gives conservative
results. Rating delivered power is highly application depen-
dent and therefore can be misleading. For example, the 125W
internal dissipation rating of the PA12 could be expressed as
an output rating of 250W for audio (sine wave) or as 440W if
using a single ended DC load. Please note that all vendors rate
maximum power using an infinite heatsink.
THERMAL STABILITY
APEX has eliminated the tendency of class A/B output
stages toward thermal runaway and thus has vastly increased
amplifier reliability. This feature, not found in most other Power
Op Amps, was pioneered by APEX in 1981 using thermistors
which assure a negative temperature coefficient in the quies-
cent current. The reliability benefits of this added circuitry far
outweigh the slight increase in component count.
EXTERNAL CONNECTIONS
CL+
+V
+IN
–IN
–V
F.O.
CL–
OUT
S
S
TOP VIEW
R
CL+
R
CL–
OUTPUT
1
2
3
4
5
6
7
8
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
POWER OPERATIONAL AMPLIFIERS
PA12 PA12A
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PA12A-S | 制造商:Cirrus Logic 功能描述: |
| PA12B1T20 | 制造商:Carlo Gavazzi 功能描述:PHOTO TE CH1 M12 CAB |
| PA12B1T20C2 | 制造商:Carlo Gavazzi 功能描述:PHOTO TE CH1 M12 PIGTAIL |
| PA12B1T20PC | 制造商:Carlo Gavazzi 功能描述:PHOTO TR CH1 12M PNP NC CAB |
| PA12B1T20PO | 制造商:Carlo Gavazzi 功能描述:PHOTO TR CH1 M12 PNP NO CAB |
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