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부품번호 LPV531 기능
기능 Rail-to-Rail Output Operational Amplifier
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LPV531 데이터시트, 핀배열, 회로
www.DataSheet4U.com
May 2006
LPV531
Programmable Micropower CMOS Input, Rail-to-Rail
Output Operational Amplifier
General Description
The LPV531 is an extremely versatile operational amplifier.
A single external resistor gives the system designer the
ability to define the quiescent current, gain bandwidth prod-
uct and output short circuit current. This innovative feature
gives the system designer a method to dynamically switch
the power level to optimize the performance of the op amp
and meet the system design requirements.
The LPV531 can be tailored to a wide variety of applications.
It offers the system designer the ability to dynamically trade
off supply current for bandwidth by adjusting the current
drawn from the ISEL pin using a DAC or switching in different
value resistors in series with the ISEL pin. The LPV531 is
capable of operating from 73 kHz, consuming only 5 µA, to
as fast as 4.6 MHz, consuming only 425 µA. The input offset
voltage is relatively independent and therefore is not signifi-
cantly affected by the chosen power level.
Utilizing a CMOS input stage, the LPV531 achieves an input
bias current of 50 fA and a common mode input voltage
which extends from the negative rail to within 1.2V of the
positive supply. The LPV531’s rail-to-rail class AB output
stage enables this op amp to offer maximum dynamic range
at low supply voltage.
Offered in the space saving 6-pin TSOT23 package, the
LPV531 is ideal for use in handheld electronics and portable
applications. The LPV531 is manufactured using National’s
advanced VIP50 process.
A fixed supply current/gain bandwidth is available upon re-
quest.
Features
(Typical 5V supply, unless otherwise noted.)
n Supply voltage
2.7V to 5.5V
n Dynamic power mode setting
n Continuously programmable supply current
— Range
5 µA to 425 µA
n Continuously programmable bandwidth
— Range
73 kHz to 4.6 MHz
n Input common mode voltage range
−0.3V to 3.8V
n CMRR
95 dB
n Rail-to-rail output voltage swing
n Input offset voltage
1 mV
Applications
n AC coupled circuits
n Portable instrumentation
n Active filters
Typical Application
AC Coupled Application
20132335
© 2006 National Semiconductor Corporation DS201323
DataSheet4 U .com
www.national.com




LPV531 pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
5V Mid-Power Mode Electrical Characteristics (Continued)
Unless otherwise specified, all limits are guaranteed for TJ = 25˚C, V+ = 5V, V= 0V, VCM = VO = V+/2, ISEL pin connected to
Vthrough 100 kresistor, RL = 100 k. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 6) (Note 5) (Note 6)
in Input-Referred Current Noise f = 1 kHz
6 fA/
5V Low Power Mode Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for TJ = 25˚C, V+ = 5V, V= 0V, VCM = VO = V+/2, ISEL connected to V
through 1 Mresistor, RL = 100 k. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 6) (Note 5) (Note 6)
VOS Input Offset Voltage
±1 ±4.5
±5 mV
VOS
TC VOS
IB
Input Offset Voltage Difference (VOS in Full Power Mode) −
(VOS in Low Power Mode)
Input Offset Average Drift
(Note 8)
Input Bias Current
(Note 9)
±0.1
±2
.05
±2
±10
±100
mV
µV/˚C
pA
CMRR
PSRR
Common Mode Rejection
Ratio
Power Supply Rejection Ratio
VCM Stepped from 0V to 3.5V
V+ = 2.7V to 5.5V
72 90
68
72 85
68
dB
dB
CMVR
Input Common-Mode Voltage CMRR 50 dB
Range
−0.3
3.8
V
AVOL
VO
Large Signal Voltage Gain
Output Swing High
Output Swing Low
VO = 0.5V to 4.5V
RL = 10 kto V+/2
VO = 0.5V to 4.5V
RL = 100 kto V+/2
RL = 10 kto V+/2
RL = 100 kto V+/2
RL = 10 kto V+/2
RL = 100 kto V+/2
90
80 100
dB
78
175 400
1600 mV from
115 200
V+
230
250 1200
1800
mV
150 165
180
ISC Output Short Circuit Current Sourcing, VO = 2.5V
(Note 3)
VID = 100 mV
Sinking, VO = 2.5V
VID = −100 mV
IS Supply Current
−400
−100
−35
µA
80 300
35
57
µA
8
SR Slew Rate (Note 7)
AV = +1, VIN = 0.5V to 3.5V
10 28
8
V/ms
GBW
en
in
Gain Bandwidth Product
Input-Referred Voltage Noise
Input-Referred Current Noise
CL = 20 pF
f = 1 kHz
f = 1 kHz
73 kHz
200 nV/
60 fA/
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LPV531 전자부품, 판매, 대치품
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Typical Performance Characteristics Unless otherwise specified, V+ = 5V, TJ = 25˚C. For Full Power
Mode the ISEL pin is connected to V; for Mid-Power Mode the ISEL pin is connected to Vthrough a 100 kresistor; for Low
Power Mode the ISEL pin is connected to Vthrough a 1 Mresistor. (Continued)
Gain and Phase vs. Frequency
(Mid Power Mode)
Gain and Phase vs. Frequency
(Low Power Mode)
20132331
Input Offset Voltage vs. Common Mode Voltage
(Full Power Mode)
20132329
Input Offset Voltage vs. Common Mode Voltage
(Mid Power Mode)
20132360
Input Offset Voltage vs. Common Mode Voltage
(Low Power Mode)
CMRR vs. Frequency
20132359
DataSheet4 U .com
20132358
7
20132362
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