pa240u Cirrus Logic, Inc., pa240u Datasheet

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pa240u

Manufacturer Part Number
pa240u
Description
High Voltage Power Operational Amplifier
Manufacturer
Cirrus Logic, Inc.
Datasheet
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
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 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
PA240U
–IN
+IN
1
2
The PA240 is a high voltage monolithic MOSFET operational
The PA240 is packaged in two standard package designs.
www.cirrus.com
D2
Q4
Q1
Q11
D3
High Voltage Power Operational Amplifier
D4
Q12
Q5
D5
P r o d u c t I n n o v a t i o n F r o m
P r o d u c t I n n o v a t i o n F r o m
PA240
COMP
COMP
D1
6
7
SUB
Q13
Q6
Q8
Q2
Q10
Q3
Q14
Copyright © Cirrus Logic, Inc. 2010
+V
I
–V
OUT
(All Rights Reserved)
3
5
4
S
S
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.
ages are directly tied to -Vs.
TYPICAL APPLICATION
Reference Application Notes 3, 20 and 25
EXTERNAL CONNECTIONS
For CC values, see graph on page 3.
Note: CC must be rated for full supply voltage.
High voltage considerations should be taken when designing
The metal tabs of both the PA240CC and PA240CX pack-
V
IN
R
–175
+175
PA240
A1
20R
TO-220
STAGGERED LEADS
PKG. STYLE CX
PA240CC
10pF
C
A
C
LOW COST 660V p-p
TRANSDUCER
PKG. STYLE CC
PIEZO DRIVE
PIEZO
DDPAK
APEX − PA240UREVG
10pF
C
C
PA240CX
20R
PA240
PA240
A2
20R
A
–175
+175
AUG 2010
PA240
R
C
N
N
1

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pa240u Summary of contents

Page 1

... Rights Reserved) PA240 DDPAK PKG. STYLE CC TO-220 STAGGERED LEADS PKG. STYLE CX 20R 20R 20R +175 +175 10pF 10pF A1 A2 PA240 PA240 PIEZO TRANSDUCER LOW COST 660V p-p PIEZO DRIVE –175 –175 PA240CX PA240CC A A APEX − PA240UREVG PA240 AUG 2010 1 ...

Page 2

... S S 120 150 5 ±50 ±150 ±175 2.2 2.5 5.9 6.85 7.7 8 –25 25 +85 UNITS mV µV/°C µV/°C µV/V µV/kh pA pA/V pA Ω µV RMS µV p-p dB MHz kHz µs V/µs Ω Ω °C/W °C/W °C/W °C/W °C PA240U ...

Page 3

... 15pF 0.001 100 1K 10K 100K FREQUENCY, F (Hz) COMMON MODE REJECTION 120 100 100 1K 10K 100K FREQUENCY, F (Hz) PA240U OUTPUT VOLTAGE SWING @85°C DROP @85°C DROP @25°C DROP V - @25°C 4 DROP ...

Page 4

... Note 5 of Page 2 is recom- mended for circuit board layouts. This may be adequate heat- sinking but the large number of variables suggests temperature measurements to be made on the top of the package. Do not allow the temperature to exceed 85°C. SOA 200mS 300mS 100 200 300 500 1K PA240U ...

Page 5

... Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. PA240U connected JFETs such as 2N4416 will be required. See Q1 and Q2 in Figure 1 ...

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