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LMP7711
Precision, 17 MHz, Low Noise, CMOS Input Amplifier
LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier
September 2005
General Description
The LMP7711 is a low noise, low offset, CMOS input, railto-rail output precision amplifier with a high gain bandwidth
and an enable pin. The LMP7711 is part of the LMP
precision amplifier family and is ideal for a variety of instrumentation applications.
Utilizing a CMOS input stage, the LMP7711 achieves an
input bias current of 100 fA, input referred voltage noise of
5.8 nV/
±
150 µV. These features make the LMP7711 a superior
choice for precision applications.
Consuming only 1.15 mA of supply current, the LMP7711
offers a high gain bandwidth of 17 MHz, enabling accurate
amplification at high closed loop gains.
The LMP7711 has a supply voltage range of 1.8V to 5.5V;
which makes this an ideal choice for portable low power
applications with low supply voltage requirements. In order
to reduce the already low power consumption of the
LMP7711, an enable function is available. Once in shutdown, the LMP7711 draws only 140 nA of supply current.
The LMP7711 is built with National’s advanced VIP50 process technology. The LMP7711 is available in a 6-pin
TSOT23 package.
, and an input offset voltage of less than
Typical Performance
Features
Unless otherwise noted, typical values at VS=5V.
n Input offset voltage
™
n Input bias current 100 fA
n Input voltage noise 5.8 nV/
n Unity gain bandwidth 17 MHz
n Supply current 1.15 mA
n Supply voltage range 1.8V to 5.5V
n Total harmonic distortion 0.001%
n Operating temperature range −40
n Rail-to-rail output swing
n Space saving TSOT23 package
±
150 µV (max)
@
Applications
n Active filters and buffers
n Sensor interface applications
n Transimpedance amplifiers
1 kHz, 600Ω
o
C to 125˚C
Offset Voltage Distribution Input Referred Voltage Noise
LMP™is a trademark of National Semiconductor Corporation.
20150322
20150339
© 2005 National Semiconductor Corporation DS201503 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
LMP7711
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Soldering Information
Infrared or Convection (20 sec) 235˚C
Wave Soldering Lead Temp. (10
sec) 260˚C
ESD Tolerance (Note 2)
Human Body 2000V
Operating Ratings (Note 1)
Machine Model 200V
Differential 0.3V
V
IN
Supply Voltage (V
Voltage on Input/Ouput Pins V
=V+–V−) 6.0V
S
+
+0.3V, V−−0.3V
Storage Temperature Range −65˚C to 150˚C
Junction Temperature (Note 3) +150˚C
Temperature Range (Note 3) −40˚C to 125˚C
Supply Voltage (V
0˚C ≤ T
≤125˚C 1.8V to 5.5V
A
–40˚C ≤ T
=V+–V−)
S
≤125˚C 2V to 5.5V
A
Package Thermal Resistance (θJA (Note 3))
6-Pin TSOT23 170˚C/W
2.5V Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 2.5V, V−= 0V, VCM=V+/2, VEN=V+. Boldface limits
apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 5)
V
OS
TC V
I
B
I
OS
CMRR Common Mode Rejection Ratio 0V ≤ V
Input Offset Voltage
Input Offset Voltage Drift (Note 6)
OS
Input Bias Current (Notes 7, 8)
=1V
V
CM
Input Offset Current (Note 8) 6 100 fA
≤ 1.4V 83
CM
80
PSRR Power Supply Rejection Ratio 2V ≤ V+≤ 5.5V, V−= 0V, VCM=0 85
80
+
≤ 5.5V, V−= 0V, VCM= 0 85 98
−0.3
-0.3
CMVR Input Common-Mode Voltage
Range
A
VOL
Large Signal Voltage Gain VO= 0.15 to 2.2V, RL=2kΩ to V+/2 88
1.8V ≤ V
CMRR ≥ 80 dB
CMRR ≥ 78 dB
82
VO= 0.15 to 2.2V, RL=10kΩ to
+
/2
V
V
O
Output Swing High RL=2kΩ to V+/2 70
92
88
77
RL=10kΩ to V+/2 60
66
Output Swing Low R
I
O
I
S
Output Short Circuit Current Sourcing to V
Supply Current Enable Mode V
=2kΩ to V+/2 30 70
L
=10kΩ to V+/2 15 60
R
L
−
VIN= 200 mV (Note 9)
Sinking to V
+
VIN= – 200 mV (Note 9)
>
2.1 0.95 1.3
EN
Shutdown Mode V
<
EN
0.4 0.03 1
36
30
7.5
5.0
Typ
(Note 4)
±
20
±
1
0.05 0.5
97
100
98
110
25
20
47
15
Max
(Note 5)
±
180
±
580
±
4 µV/˚C
50
1.5
1.5
73
62
1.6
4
Units
µV
pA
dB
dB
V
dB
mV from
+
V
mV
mA
mA
µA
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2.5V Electrical Characteristics (Continued)
Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 2.5V, V−= 0V, VCM=V+/2, VEN=V+. Boldface limits
apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 5)
SR Slew Rate A
= +1, Rising (10% to 90%)
V
A
= +1, Falling (90% to 10%) 10.5
V
Typ
(Note 4)
Max
(Note 5)
Units
V/µs
GBW Gain Bandwidth Product 14 MHz
e
n
i
n
t
on
t
off
V
EN
I
EN
THD Total Harmonic Distortion f = 1 kHz, A
Input-Referred Voltage Noise f = 400 Hz 7
f = 1 kHz 6.2
nV/
Input-Referred Current Noise f = 1 kHz 0.01 pA/
Turn-on Time 140 ns
Turn-off Time 1000 ns
Shutdown Pin Voltage Range Enable Mode 2.1 to 2.5 2 to 2.5
Shutdown Mode 0 to 0.4 0 to 0.5
Shutdown Pin Input Current V
>
2.1V (Note 7) 1.5 3.0
EN
<
V
0.4V (Note 7) 0.003 0.1
EN
=1,RL= 600Ω 0.01 %
V
µA
V
5V Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 5V, V−= 0V, VCM=V+/2, VEN=V+. Boldface limits
apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 5)
V
OS
TC V
I
B
I
OS
CMRR Common Mode Rejection
PSRR Power Supply Rejection Ratio 2V ≤ V
Input Offset Voltage
Input Offset Average Drift (Note 6)
OS
Input Bias Current (Notes 7, 8)
=2V
V
CM
Input Offset Current (Note 8) 11 150 fA
0V ≤ V
Ratio
≤ 3.7V 85
CM
+
≤ 5.5V, V−= 0V, VCM=0 85
82
80
1.8V ≤ V+≤ 5.5V, V−= 0V, VCM= 0 85 98
CMVR Input Common-Mode Voltage
Range
A
VOL
Large Signal Voltage Gain VO= 0.3 to 4.7V, RL=2kΩ to V+/2 88
CMRR ≥ 80 dB
CMRR ≥ 78 dB
−0.3
-0.3
82
= 0.3 to 4.7V, RL=10kΩ to V+/2 92
V
O
88
V
O
Output Swing High RL=2kΩ to V+/2 70
77
RL=10kΩ to V+/2 60
66
Output Swing Low RL=2kΩ to V+/2 50 70
=10kΩ to V+/2 20 60
R
L
I
O
Output Short Circuit Current Sourcing to V
−
VIN= 200 mV (Note 9)
Sinking to V
+
VIN= – 200 mV (Note 9)
46
38
10.5
6.5
Typ
(Note 4)
±
10
±
1
0.1 1
100
100
107
110
35
25
60
20
Max
(Note 5)
±
150
±
550
±
4 µV/˚C
100
4
4
73
62
Units
µV
pA
dB
dB
V
dB
mV from
V
mV
mA
LMP7711
+
www.national.com3
5V Electrical Characteristics (Continued)
I
S
LMP7711
Supply Current Enable Mode V
>
4.6 1.15 1.40
EN
1.75
Shutdown Mode V
<
0.4 0.14 1
EN
4
SR Slew Rate AV= +1, Rising (10% to 90%) 6.0 9.5
A
= +1, Falling (90% to 10%) 7.5 11.5
V
GBW Gain Bandwidth Product 17 MHz
e
n
Input-Referred Voltage Noise f = 400 Hz 6.8
f = 1 kHz 5.8
i
n
t
on
t
off
V
EN
Input-Referred Current Noise f = 1 kHz 0.01 pA/
Turn-on Time ns
Turn-off Time ns
Enable Pin Voltage Range Enable Mode 4.6 to 5.0 4.5 to 5.0
Shutdown Mode 0 to 0.4 0 to 0.5
I
EN
Enable Pin Input Current V
THD Total Harmonic Distortion f = 1 kHz, A
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: 1.5 kΩ in series with 100 pF. Machine Model: 0Ω in series with 200 pF.
Note 3: The maximum power dissipation is a function of T
P
=(T
D
J(MAX)-TA
Note 4: Typical values represent the most likely parametric norm at the time of characterization.
Note 5: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the Statistical Quality
Control (SQC) method.
Note 6: Offset voltage average drift is determined by dividing the change in V
Note 7: Positive current corresponds to current flowing into the device.
Note 8: Guaranteed by design.
Note 9: The short circuit test is a momentary test.
)/θJA. All numbers apply for packages soldered directly onto a PC Board.
>
4.6V (Note 7) 5.6 10
EN
<
V
0.4V (Note 7) 0.005 0.2
EN
=1,RL= 600Ω 0.01 %
V
, θJA. The maximum allowable power dissipation at any ambient temperature is
J(MAX)
at the temperature extremes by the total temperature change.
OS
mA
µA
V/µs
nV/
V
µA
Connection Diagram
6-Pin TSOT23
Top View
20150301
Ordering Information
Package Part Number Package Marking Transport Media NSC Drawing
6-Pin TSOT23
LMP7711MK
LMP7711MKX 3k Units Tape and Reel
AC3A
1k Units Tape and Reel
MK06A
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Physical Dimensions inches (millimeters) unless otherwise noted
6-Pin TSOT23
NS Package Number MK06A
LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS
WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and whose failure to perform when
properly used in accordance with instructions for use
2. A critical component is any component of a life support
device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.
provided in the labeling, can be reasonably expected to result
in a significant injury to the user.
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Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain
no ‘‘Banned Substances’’ as defined in CSP-9-111S2.
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