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 I
SEL
pin using a DAC or switching in different
value resistors in series with the I
SEL
pin. The LPV531 is
capable of operating from 73 kHz, consuming only 5 A, to
as fast as 4.6 MHz, consuming only 425 A. 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 A to 425 A
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
20132335
AC Coupled Application
May 2006
LPV531
Programmable
Micropower
CMOS
Input,
Rail-to-Rail
Output
Operational
Amplifier
2006 National Semiconductor Corporation
DS201323
www.national.com
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Human Body Model
2000V
Machine Model
200V
V
IN
Differential
2V
Supply Voltage (V
+
- V
-
)
6V
Storage Temperature Range
-65C to +150C
Junction Temperature (Note 5)
+150C
Soldering Information
Infrared or Convection (20 sec)
235C
Wave Soldering Lead Temp.
(10 sec)
260C
Operating Ratings
(Note 1)
Operating Temperature Range
-40C to +85C
Supply Voltage (V
+
V
-
)
2.7V to 5.5V
Package Thermal Resistance (
JA
) (Note 4)
6-Pin TSOT23
171C/W
5V Full Power Mode Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, I
SEL
pin connected to
V
-
, R
L
= 100 k
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
1
4.5
5
mV
V
OS
Input Offset Voltage Difference (V
OS
in Full Power Mode) -
(V
OS
in Low Power Mode)
0.1
2
mV
TC V
OS
Input Offset Average Drift
(Note 8)
2
V/C
I
B
Input Bias Current
(Note 9)
.05
10
100
pA
CMRR
Common Mode Rejection
Ratio
V
CM
Stepped from 0V to 3.5V
72
68
95
dB
PSRR
Power Supply Rejection Ratio
V
+
= 2.7V to 5.5V
V
CM
= 1V
74
70
90
dB
CMVR
Input Common Mode Voltage
Range
CMRR
50 dB
-0.3
3.8
V
A
VOL
Large Signal Voltage Gain
V
O
= 0.5V to 4.5V
R
L
= 1 k
to V
+
/2
87
84
96
dB
V
O
= 0.5V to 4.5V
R
L
= 10 k
to V
+
/2
104
100
114
V
O
= 0.5V to 4.5V
R
L
= 100 k
, to V
+
/2
108
104
128
V
O
Output Swing High
R
L
= 1 k
to V
+
/2
120
180
195
mV from
V
+
R
L
= 10 k
to V
+
/2
55
80
85
R
L
= 100 k
to V
+
/2
30
50
60
Output Swing Low
R
L
= 1 k
to V
+
/2
160
210
230
mV
R
L
= 10 k
to V
+
/2
105
120
135
R
L
= 100 k
to V
+
/2
95
120
135
I
SC
Output Short Circuit Current
(Note 3)
Sourcing, V
O
= 2.5V
V
ID
= 100 mV
-15
-8
-3
mA
Sinking, V
O
= 2.5V
V
ID
= -100 mV
13
10
24
I
S
Supply Current
425
530
650
A
LPV531
www.national.com
2
5V Full Power Mode Electrical Characteristics
(Continued)
Unless otherwise specified, all limits are guaranteed for T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, I
SEL
pin connected to
V
-
, R
L
= 100 k
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
SR
Slew Rate (Note 7)
A
V
= +1, V
IN
= 0.5V to 3.5V
C
L
= 15 pF
1.55
1
2.5
V/s
GBW
Gain Bandwidth Product
C
L
= 20 pF
4.6
MHz
e
n
Input-Referred Voltage Noise
f = 100 kHz
20
nV/
f = 1 kHz
28
i
n
Input-Referred Current Noise
f = 1 kHz
6
fA/
5V Mid-Power Mode Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, I
SEL
pin connected to
V
-
through 100 k
resistor, R
L
= 100 k
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
1
4.5
5
mV
V
OS
Input Offset Voltage Difference (V
OS
in Full Power Mode) -
(V
OS
in Low Power Mode)
0.1
2
mV
TC V
OS
Input Offset Average Drift
(Note 8)
2
V/C
I
B
Input Bias Current
(Note 9)
.05
10
100
pA
CMRR
Common Mode Rejection
Ratio
V
CM
Stepped from 0V to 3.5V
72
68
92
dB
PSRR
Power Supply Rejection Ratio
V
+
= 2.7V to 5.5V
72
68
88
dB
CMVR
Input Common Mode Voltage
Range
CMRR
50 dB
-0.3
3.8
V
A
VOL
Large Signal Voltage Gain
V
O
= 0.5V to 4.5V
R
L
= 10 k
to V
+
/2
86
82
96
dB
V
O
= 0.5V to 4.5V
R
L
= 100 k
to V
+
/2
100
98
114
V
O
Output Swing High
R
L
= 10 k
to V
+
/2
115
160
175
mV from
V
+
R
L
= 100 k
to V
+
/2
65
110
120
Output Swing Low
R
L
= 10 k
to V
+
/2
150
165
180
mV
R
L
= 100 k
to V
+
/2
105
120
135
I
SC
Output Short Circuit Current
(Note 3)
Sourcing, V
O
= 2.5V
V
ID
= 100 mV
-4
-1.5
-1
mA
Sinking, V
O
= 2.5V
V
ID
= -100 mV
1.5
1
4
I
S
Supply Current
42
55
62
A
SR
Slew Rate (Note 7)
A
V
= +1, V
IN
= 0.5V to 3.5V
180
100
250
V/ms
GBW
Gain Bandwidth Product
C
L
= 20 pF
625
kHz
e
n
Input-Referred Voltage Noise
f = 100 kHz
55
nV/
f = 1 kHz
60
LPV531
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3
5V Mid-Power Mode Electrical Characteristics
(Continued)
Unless otherwise specified, all limits are guaranteed for T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, I
SEL
pin connected to
V
-
through 100 k
resistor, R
L
= 100 k
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
i
n
Input-Referred Current Noise
f = 1 kHz
6
fA/
5V Low Power Mode Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, I
SEL
connected to V
-
through 1 M
resistor, R
L
= 100 k
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
1
4.5
5
mV
V
OS
Input Offset Voltage Difference (V
OS
in Full Power Mode) -
(V
OS
in Low Power Mode)
0.1
2
mV
TC V
OS
Input Offset Average Drift
(Note 8)
2
V/C
I
B
Input Bias Current
(Note 9)
.05
10
100
pA
CMRR
Common Mode Rejection
Ratio
V
CM
Stepped from 0V to 3.5V
72
68
90
dB
PSRR
Power Supply Rejection Ratio
V
+
= 2.7V to 5.5V
72
68
85
dB
CMVR
Input Common-Mode Voltage
Range
CMRR
50 dB
-0.3
3.8
V
A
VOL
Large Signal Voltage Gain
V
O
= 0.5V to 4.5V
R
L
= 10 k
to V
+
/2
90
dB
V
O
= 0.5V to 4.5V
R
L
= 100 k
to V
+
/2
80
78
100
V
O
Output Swing High
R
L
= 10 k
to V
+
/2
175
400
1600
mV from
V
+
R
L
= 100 k
to V
+
/2
115
200
230
Output Swing Low
R
L
= 10 k
to V
+
/2
250
1200
1800
mV
R
L
= 100 k
to V
+
/2
150
165
180
I
SC
Output Short Circuit Current
(Note 3)
Sourcing, V
O
= 2.5V
V
ID
= 100 mV
-400
-100
-35
A
Sinking, V
O
= 2.5V
V
ID
= -100 mV
80
35
300
I
S
Supply Current
5
7
8
A
SR
Slew Rate (Note 7)
A
V
= +1, V
IN
= 0.5V to 3.5V
10
8
28
V/ms
GBW
Gain Bandwidth Product
C
L
= 20 pF
73
kHz
e
n
Input-Referred Voltage Noise
f = 1 kHz
200
nV/
i
n
Input-Referred Current Noise
f = 1 kHz
60
fA/
LPV531
www.national.com
4
Power Select Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, R
L
= 100 k
. Bold-
face limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
t
LF
Time from Low Power Mode
to Full Power Mode
210
ns
t
FL
Time from Full Power Mode to
Low Power Mode
500
ns
V
REXT
Voltage
@
I
SEL
Pin
I
SEL
Pin Left Open
100
110
125
mV
R
INT
9
11
14.5
k
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics Tables.
Note 2: Human Body Model is 1.5 k
in series with 100 pF. Machine Model is 0 in series with 200 pF.
Note 3: Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150C.
Note 4: The maximum power dissipation is a function of T
J(MAX)
,
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is
P
D
= (T
J(MAX)
- T
A
)/
JA
. All numbers apply for packages soldered directly onto a PC board.
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Slew rate is the slower of the rising or falling slew rates.
Note 8: Offset voltage average drift is determined by dividing the change in V
OS
at temperature extremes into the total temperature change.
Note 9: Guaranteed by design.
Connection Diagram
6-Pin TSOT23
20132316
Top View
Ordering Information
Package
Part Number
Package Marking
Transport Media
NSC Drawing
6-Pin TSOT23
LPV531MK
AV2A
1k Units Tape and Reel
MK06A
LPV531MKX
3k Units Tape and Reel
LPV531
www.national.com
5
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