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PA91 데이터시트 PDF




Cirrus Logic에서 제조한 전자 부품 PA91은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 PA91 자료 제공

부품번호 PA91 기능
기능 High Voltage Power Operational Amplifiers
제조업체 Cirrus Logic
로고 Cirrus Logic 로고


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PA91 데이터시트, 핀배열, 회로
®
P r o d uPc tAI9n 1n o v a t i o n F r o m
PA91PA91www.DataSheet4U.com
High Voltage Power Operational Amplifiers
FEATURES
♦ HIGH VOLTAGE — 450V (±225V)
♦ LOW QUIESCENT CURRENT — 10mA
♦ HIGH OUTPUT CURRENT — 200mA
♦ PROGRAMMABLE CURRENT LIMIT
♦ HIGH SLEW RATE — 300V/µs
APPLICATIONS
♦ PIEZOELECTRIC POSITIONING
♦ HIGH VOLTAGE INSTRUMENTATION
♦ ELECTROSTATIC TRANSDUCERS
♦ PROGRAMMABLE POWER SUPPLIES UP
TO 440V
DESCRIPTION
The PA91 is a high voltage, low quiescent current
MOSFET operational amplifier designed as a low cost
solution for driving continuous output currents up to
200mA and pulse currents up to 350mA. The safe oper-
ating area (SOA) has no second breakdown limitations
and can be observed for all type loads by choosing
an appropriate current limiting resistor. The MOSFET
output stage is biased AB for linear operation. Exter-
nal compensation provides flexibility in choosing band-
width and slew rate for the application. Apex Precision
Power’s Power SIP package uses a minimum of board
space allowing for high density circuit boards. The 12-
pin PowerSIP package is electrically isolated.
EQUIVALENT SCHEMATIC
12
11
+VS
R1 R2
C1
R3
Q1 Q2
Q6
Q5
Q14A
1
–IN R5
R8
2
+IN
Q15
5
4 CC2
CC1
Q14B
R6
R9
3
IQ
R11
–VS
7
8
EXTERNAL CONNECTIONS
1 2 3 4 5 6 7 8 9 10 11 12
Rc
–IN +IN
IQ
(See text.)
Cc
RCL
*
–Vs
*
TO LOAD
AND FEEDBACK
+Vs
* Bypassing required.
Q3
Q8
Q11
Q13
Q12
Q16
R4
R7
Q4
ILIM
9
10
6
OUT
Q17
R10
R12
12-pin SIP
PACKAGE
STYLE DP
Formed leads available
See package style EE
PA91wUww.cirrus.com
Copyright © Cirrus Logic, Inc. 2010
(All Rights Reserved)
APEX − PAM9A1RUR20E1V01I




PA91 pdf, 반도체, 판매, 대치품
30
20
10
0
CCCC
=
=
68
10
pF
pF
PA91–10
CCCC
=
=
4.7 pF
OPEN
100K
1M 10M
FREQUENCY, F (Hz)
SLEW RATE
1K
700
500
300
200
100
70
50
40
30
20
10
0.1 1
10 100
EXT. COMPENSATION CAPACITOR, CC (pF)
CURRENT LIMIT
.2
.15
.1
.05
0
0 4 8 12 16 20 24
RESISTOR VALUE, RCL (Ω)
5 200
4.5
4
®
Product Innovation From
3.5
0 .05 0.1 0.15 0.2
OUTPUT CURRENT, IO (A)
HARMONIC DISTORTION
1
VRSL
=
=
1KΩ
200V
AV = 63
.1
PO = 17.6W
.01 PO = 1W
PO = 5W
.001
10
100 1K 10K
FREQUENCY, F (Hz)
100K
100
90
80
70
60
50
10K
www.DataSheet4U.com
100K
1M
FREQUENCY, F (Hz)
INPUT NOISE VOLTAGE
20
15
10
7
5
3
2
10 100 1K 10K 100K
FREQUENCY, F (Hz)
PHASE COMPENSATION
GAIN
≥1
CC*
68pF
RC
100Ω
≥5
10pF
100Ω
≥10
4.7pF
≥30
NONE
*CC To be rated for the full supply voltage +VS to –VS.
Use NPO ceramic (COG) type.
TYPICAL APPLICATION
RF
LOW POWER, PIEZOELECTRIC POSITIONING
Piezo positioning may be applied to the focusing of seg-
+VS
mented mirror systems. The composite mirror may be
composed of hundreds of elements, each requiring focus-
ing under computer control. In such complex systems the
PA91 reduces the costs of power supplies and cooling
with its advantages of low cost and low quiescent power
consumption while increasing circuit density with the SIP
package.
R IN
COMPUTER
FOCUS
COMMAND
VOLTAGE
1 11,12
PA91
6
2
9,10
7,8
R CL
PIEZO DRIVE
V OUT
GENERAL
–V S
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 Precision Power’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
CURRENT LIMIT
For proper operation, the current limit resistor (RCL) must be connected as shown in the external connection dia-
gram. For optimum reliability the resistor value should be set as high as possible. The value is calculated as follows;
with the maximum practical value of 32 ohms.
RCL = .IL6IM5   
4 PA91U

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