PA240 Datasheet, PDF (1/5 Pages) Cirrus Logic – HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER

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PAP2A42400
High Voltage Power Operational Amplifier
FEATURES
• RoHS COMPLIANT
• MONOLITHIC MOS TECHNOLOGY
• LOW COST
• HIGH VOLTAGE OPERATION—350V
• LOW QUIESCENT CURRENT TYP.—2.2mA
• NO SECOND BREAKDOWN
• HIGH OUTPUT CURRENT—120 mA PEAK
APPLICATIONS
• TELEPHONE RING GENERATOR
• PIEZO ELECTRIC POSITIONING
• ELECTROSTATIC TRANSDUCER & DEFLECTION
• DEFORMABLE MIRROR FOCUSING
• PACKAGING OPTIONS
7 TO-220 with staggered Lead Form (PA240CX)
7 DDPAK Surface Mount Package (PA240CC)
DESCRIPTION
The PA240 is a high voltage monolithic MOSFET operational
amplifier achieving performance features previously found only
in hybrid designs while increasing reliability.Inputs are protected
from excessive common mode and differential mode voltages.
The safe operating area (SOA) has no second breakdown
limitations. External compensation provides the user flexibility
in choosing optimum gain and bandwidth for the application.
The PA240 is packaged in two standard package designs.
The surface mount version of the PA240, the PA240CC,
is an industry standard non-hermetic plastic 7-pin DDPAK.
The through hole version of the PA240, the PA240CX, is an
industry standard non-hermetic plastic 7-pin TO-220 package.
The PA240CX is a staggered lead formed option that offers
industry standard 100 mil spacing. This allows for easier PC
board layout. (Please refer to package drawings for outline
dimensions.)
EQUIVALENT SCHEMATIC
Q1
Q4
Q5
1
–IN
D2 D3 D4 D5
2
+IN
Q11
Q12
D1
Q2
6 Q6
COMP
COMP _Q8
7
Q13
SUB
3
+V_S
Q3
I_OUT
5
Q10
Q14
–V_S
4
DDPAK
PKG. STYLE CC
TO-220
STAGGERED LEADS
PKG. STYLE CX
High voltage considerations should be taken when designing
board layouts for the PA240.The PA240 may require a derate in
supply voltage depending on the spacing used for board layout.
The 15-mil and 14-mil minimum spacing of the 7 TO-220 and
7 DDPAK respectively is adequate to standoff the 350V rating
of the PA240. However, a supply voltage derate to 250V is
required if the spacing of circuit board artwork is less than 11
mils. In cases where the PA240 is used to its maximum voltage
rating, the PA240CX is recommended given that the staggered
lead form allows for 100-mil standard spacing.
The metal tabs of both the PA240CC and PA240CX pack-
ages are directly tied to -Vs.
TYPICAL APPLICATON
Reference Application Notes 3, 20 and 25
R
20R
20R
V_IN
+175
20R
+175
C_C
10pF
C_C
10pF
A1
A2
PA240
PA240
R_N
PIEZO
TRANSDUCER
C_N
–175
LOW COST 660V p-p
PIEZO DRIVE
–175
EXTERNAL CONNECTIONS
PA240CX
PA240CC
A
A
For CC values, see graph on page 3.
Note: CC must be rated for full supply voltage.
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Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 2009₁
APEX − PA240UREVF