PA92_09 Datasheet, PDF (1/6 Pages) Cirrus Logic – High Voltage Power Operational Amplifiers

P r o d u c t IInnnnoovvaa t i o n FFrroomm
PAP9A922
High Voltage Power Operational Amplifiers
FEATURES
♦ HIGH VOLTAGE — 400V (±200V)
♦ LOW QUIESCENT CURRENT — 10mA
♦ HIGH OUTPUT CURRENT — 4A
♦ PROGRAMMABLE CURRENT LIMIT
APPLICATIONS
♦ PIEZOELECTRIC POSITIONING
♦ HIGH VOLTAGE INSTRUMENTATION
♦ ELECTROSTATIC TRANSDUCERS
♦ PROGRAMMABLE POWER SUPPLIES UP
TO 390V
DESCRIPTION
The PA92 is a high voltage, low quiescent current
MOSFET operational amplifier designed as a low cost
solution for driving continuous output currents up to 4A
and pulse currents up to 7A. The safe operating area
(SOA) has no second breakdown limitations and can
be observed for all type loads by choosing an appropri-
ate current limiting resistor. The MOSFET output stage
is biased AB for linear operation. External compensa-
tion provides flexibility in choosing bandwidth and slew
rate for the application. Apex Precision Power’sPower
SIP package uses a minimum of board space allowing
for high density circuit boards. The Power SIP package
is electrically isolated.
EQUIVALENT SCHEMATIC
12
11
+V_S
R1 R2
C1
R3
Q3
Q1
Q2
Q6
Q5
Q14A
1
–IN ^R5
R8
2
+IN
Q15
5
4 ^CC2
CC1
Q14B
R6
R9
3
I_Q
Q8
Q11
Q13
Q12
Q16
R11
R12
–V_S
7
8
R4
Q4
ILIM
9
R7 10
6
OUT
Q17
R10
PA92U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
JUN 20091
APEX − PA92UREVK