OPERATING
CONSIDERATIONS
PA141/PA142 • PA141A/PA142A
APPLICATION REFERENCES:
For additional technical information please refer to the
following Application Notes:
AN 1: General Operating Considerations
AN 3: Bridge Circuit Drives
AN 25: Driving Capacitive Loads
AN 38: Loop Stability with Reactive Loads
SAFE OPERATING AREA (SOA)
The MOSFET output stage of this power operational
amplifier has two distinct limitations:
1. The current handling capability of the die metallization.
2. The temperature of the output MOSFETs.
NOTE: The output stage is protected against transient
flyback. However, for protection against sustained, high energy
flyback, external fast-recovery diodes should be used.
200
OUTPUT CURRENT FROM +V
S
OR –V
S
, (mA)
PA141 SOA
120
100
300mS
50
40
30
20
DC
DC
200mS
DC
,T
C
=
85
°
C
,T
C
=
10
12
5
°
C
5
4
3
PULSE CURVES @ 10% DUTY CYCLE MAX
2
10
20 30
50
100
200 300
500
SUPPLY TO OUTPUT DIFFERENTIAL, V
S
-V
O
(V)
200
OUTPUT CURRENT FROM +V
S
OR –V
S
, (mA)
PA142 SOA
10
0
0m
S
120
30
0m
S
100
20
m
S
50
40
30
20
DC
,T
DC
DC
,T
C
=
C
=
85
°
C
12
10
5
°
C
5
4
3
PULSE CURVES @ 10% DUTY CYCLE MAX
2
10
20 30
50
100
200 300
500
SUPPLY TO OUTPUT DIFFERENTIAL, V
S
-V
O
(V)
This
MICROTECHNOLOGY CORPORATION
• TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS
or omissions. All specifi
EMAIL prodlit@apexmicrotech.com
APEX
data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies
(520) 690-8601 •
cations are subject to change without notice.
PA141/142U REV. A MARCH 2002 © 2002 Apex Microtechnology Corp.
5
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