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参数资料
| 型号： | PA02 |
| 厂商： | Electronic Theatre Controls, Inc. |
| 元件分类： | 运算放大器 |
| 英文描述： | POWER OPERATIONAL AMPLIFIERS |
| 中文描述： | 功耗运算放大器 |
| 文件页数： | 4/4页 |
| 文件大小： | 58K |
| 代理商： | PA02 |
OPERATING
CONSIDERATIONS
PA02 PA02A
GENERAL
Please read the “General Operating Considerations” section which covers stability,
supplies, heatsinking, mounting, current limit, SOA interpretation, 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 SOA curves combine the
effect of all limits for this Power
Op Amp. For a given applica-
tion, the direction and magni-
tude of the output current should
be calculated or measured and
checked against the SOA
curves. This is simple for resis-
tive loads but more complex for
reactive and EMF generating
loads. The following guidelines
may save extensive analytical
efforts:
1. Under transient conditions,
capacitive and dynamic*
loads up to the following maxi-
mums are safe:
CAPACITIVE LOAD
I
LIM
= 2A
2mF
10mF
25mF
INDUCTIVE LOAD
I
LIM
= 2A
.2H
.7H
5H
±
V
S
18V
15V
10V
I
LIM
= 5A
2.2mF
10mF
I
LIM
= 5A
10mH
25mH
50mH
*
If the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 8V
below the supply rail with I
= 5A, or 17V below the supply rail with I
= 2A while the amplifier is current
limiting, the inductor should be capacitively coupled or the current limit must be lowered to meet SOA criteria.
2. The amplifier can handle any EMF generating or reactive load and short circuits to
the supply rails or shorts to common if the current limits are set as follows at
T
C
= 85
°
C.
SHORT TO
±
V
±
V
S
C, L OR EMF LOAD
SHORT TO
COMMON
18V
15V
10V
.5A
.7A
1.6A
1.7A
2.8A
4.2A
These simplified limits may be exceeded with further analysis using the operating
conditions for a specific application.
CURRENT LIMIT
Proper operation requires the use of two current limit resistors, connected as shown
in the external connection diagram. The minimum value for R
is 0.12 ohm, however
for optimum reliability it should be set as high as possible. Refer to the “General
Operating Considerations” section of the handbook for current limit adjust details.
DEVICE MOUNTING
The case (mounting flange) is electrically isolated and should be mounted directly to
a heatsink with thermal compound. Screws with Belville spring washers are recom-
mended to maintain positive clamping pressure on heatsink mounting surfaces. Long
periods of thermal cycling can loosen mounting screws and increase thermal resis-
tance.
Since the case is electrically isolated (floating) with respect to the internal circuits it
is recommended to connect it to common or other convenient AC ground potential.
O
S
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE V
S
–V
O
(V)
2
3
5
7
10
15
20 25 30 40
0.2
0.3
0.5
0.7
1.0
1.5
2.0
3.0
4.0
5.0
THERMAL
SECOND
SED TT
BREAKDOWN
T
C
=125°C
T
C
=25C
T
C
=70°C
T
C
=100°C
100
1K
3K
.1M
FREQUENCY, F (Hz)
.001
.1
1
HARMONIC DISTORTION
D
.003
.03
.3
300
10K 30K
.01
.3M
1
3
4
TIME, t (μS)
–15
5
15
PULSE RESPONSE
–10
0
10
2
5
–5
PULSE RESPONSE
O
O
–.2
–.1
0
.1
.2
.3
–.3
10K
FREQUENCY, F (Hz)
LOADING EFFECTS
D
–1.2
–.6
0
.1M
100
1K
–1.5
–.9
–.3
TIME, t (μS)
0
.5
1.0
1.5
O
O
0
GAIN = 1
LOAD = 10
P
O
=5W
P
O
=50mW
P
O
=.5W
V
IN
= ±.2V, tr = 50ns
V
IN
= ±1V, tr = 100ns
LOAD = 10
I
O
= 150mA
I
O
= 400mA
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.
PA02U REV. L FEBRUARY 1998
1998 Apex Microtechnology Corp.
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