PA16(2008) Просмотр технического описания (PDF) - Cirrus Logic
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PA16 Datasheet PDF : 7 Pages
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.1
0
–.1
PA–1.26 • PA16A
–.3
5
0 .5 1.0 1.5
TIME, t (µs)
LOADING EFFECTS
0
Product Innova tionFrom
–.3
IO = 150mA
–.6
–.9
–1.2
IO = 400mA
–1.5
100
1K
10K
.1M
FREQUENCY, F (Hz)
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification interpretation. Visit www.cirrus.com for design tools
that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selec-
tion; Apex’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
SAFE OPERATING AREA (SOA)
The SOA curves combine the effect of all limits for this
Power Op Amp. 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. The following guidelines may
save extensive analytical efforts:
The amplifier can handle any EMF generating or reactive
load and short circuits to the supply rails or shorts to com-
mon if the current limits are set as follows at TC = 85°C.
SHORT TO ±VS
SHORT TO
±VS C, L OR EMF LOAD COMMON
18V
.9A
15V
1.0A
10V
1.6A
1.8A
2.1A
3.2A
40"
5
$
5$ $$
4611-:50065165%*''&3&/5*"-70-5"(&74m70 7
These simplified limits may be exceeded with further analysis using the operating conditions for a specific applica-
tion.
CURRENT LIMIT
Proper operation requires the use of two current limit resistors, connected as shown in the external connection dia-
gram. The minimum value for RCL 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.
RCL
=
0.65
ILIM (A)
-
0.01
PA16U
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