Hardened Amplifiers. LMP2021 Datasheet

LMP2021 Amplifiers. Datasheet pdf. Equivalent

LMP2021 Datasheet
Recommendation LMP2021 Datasheet
Part LMP2021
Description (LMP2021 / LMP2022) EMI Hardened Amplifiers
Feature LMP2021; LMP2021/LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifiers www.DataSheet4U.com July 23, 2009 .
Manufacture National Semiconductor
Datasheet
Download LMP2021 Datasheet




National Semiconductor LMP2021
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LMP2021/LMP2022
July 23, 2009
Zero Drift, Low Noise, EMI Hardened Amplifiers
General Description
The LMP2021/LMP2022 are single and dual precision oper-
ational amplifiers offering ultra low input offset voltage, near
zero input offset voltage drift, very low input voltage noise and
very high open loop gain. They are part of the LMP® precision
family and are ideal for instrumentation and sensor interfaces.
The LMP2021/LMP2022 have only 0.004 µV/°C of input offset
voltage drift, and 0.4 µV of input offset voltage. These at-
tributes provide great precision in high accuracy applications.
The proprietary continuous correction circuitry guarantees
impressive CMRR and PSRR, removes the 1/f noise compo-
nent, and eliminates the need for calibration in many circuits.
With only 260 nVPP (0.1 Hz to 10 Hz) of input voltage noise
and no 1/f noise component, the LMP2021/LMP2022 are suit-
able for low frequency applications such as industrial preci-
sion weigh scales. The low input bias current of 23 pA makes
these excellent choices for high source impedance circuits
such as non-invasive medical instrumentation as well as test
and measurement equipment. The extremely high open loop
gain of 160 dB drastically reduces gain error in high gain ap-
plications. With ultra precision DC specifications and very low
noise, the LMP2021/LMP2022 are ideal for position sensors,
bridge sensors, pressure sensors, medical equipment and
other high accuracy applications with very low error budgets.
The LMP2021 is offered in 5-Pin SOT-23 and 8-Pin SOIC
packages. The LMP2022 is offered in 8-Pin MSOP and 8-Pin
SOIC packages.
Features
(Typical Values, TA = 25°C, VS = 5V)
Input offset voltage (typical)
−0.4 µV
Input offset voltage (max)
±5 µV
Input offset voltage drift (typical)
-0.004 µV/°C
Input offset voltage drift (max)
±0.02 µV/°C
Input voltage noise, AV = 1000
11 nV/Hz
Open loop gain
160 dB
CMRR
139 dB
PSRR
130 dB
Supply voltage range
2.2V to 5.5V
Supply current (per amplifier)
1.1 mA
Input bias current
±25 pA
GBW
5 MHz
Slew rate
2.6 V/µs
Operating temperature range
−40°C to 125°C
5-Pin SOT-23, 8-Pin MSOP and 8-Pin SOIC Packages
Applications
Precision instrumentation amplifiers
Battery powered instrumentation
Thermocouple amplifiers
Bridge amplifiers
Typical Application
Bridge Amplifier
The LMP2021/LMP2022 support systems with up to 24 bits of accuracy.
LMP® is a registered trademark of National Semiconductor Corporation.
© 2009 National Semiconductor Corporation 300149
30014972
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National Semiconductor LMP2021
www.DataShAeebt4Us.ocolmute 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
Charge Device Model
1000V
VIN Differential
Supply Voltage (VS = V+ – V)
All Other Pins
±VS
6.0V
V+ + 0.3V, V− 0.3V
Output Short-Circuit Duration to V+ or V
             (Note 3)
5s
Storage Temperature Range
−65°C to 150°C
Junction Temperature (Note 4)
Soldering Information
Infrared or Convection (20 sec)
Wave Soldering Lead Temperature
(10 sec)
150°C max
235°C
260°C
Operating Ratings (Note 1)
Temperature Range
Supply Voltage (VS = V+ – V)
Package Thermal Resistance (θJA)
5-Pin SOT-23
8-Pin SOIC (LMP2021)
8-Pin SOIC (LMP2022)
8-Pin MSOP
−40°C to 125°C
2.2V to 5.5V
164 °C/W
106 °C/W
106 °C/W
217 °C/W
2.5V Electrical Characteristics (Note 5)
Unless otherwise specified, all limits are guaranteed for TA = 25°C, V+ = 2.5V, V= 0V, VCM = V+/2, RL >10 kto V+/2. Bold-
face limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min Typ Max Units
(Note 7) (Note 6) (Note 7)
VOS Input Offset Voltage
–0.9 ±5
±10
μV
TCVOS Input Offset Voltage Drift (Note 8)
IB Input Bias Current
0.001
±23
±0.02
±100
±300
μV/°C
pA
IOS Input Offset Current
±57 ±200
±250
pA
CMRR
CMVR
Common Mode Rejection Ratio
−0.2V VCM 1.7V
0V VCM 1.5V
Input Common-Mode Voltage Range Large Signal CMRR 105 dB
Large Signal CMRR 102 dB
105
102 141
−0.2
0
1.7
1.5
dB
V
EMIRR Electro-Magnetic Interference
Rejection Ratio
VRF-PEAK = 100 mVP (−20 dBVP)
f = 400 MHz
40
(Note 9)
IN+
VRF-PEAK = 100 mVP (−20 dBVP)
f = 900 MHz
48
and dB
IN− VRF-PEAK = 100 mVP (−20 dBVP)
67
f = 1800 MHz
VRF-PEAK = 100 mVP (−20 dBVP)
f = 2400 MHz
79
PSRR Power Supply Rejection Ratio
AVOL Large Signal Voltage Gain
2.5V V+ 5.5V, VCM = 0
2.2V V+ 5.5V, VCM = 0
RL = 10 kto V+/2
VOUT = 0.5V to 2V
RL = 2 kto V+/2
VOUT = 0.5V to 2V
115 130
112
110 130
124 150
119
120 150
115
dB
dB
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National Semiconductor LMP2021
Symbol
Parameter
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VOUT Output Swing High
Output Swing Low
IOUT Linear Output Current
IS Supply Current
SR Slew Rate (Note 10)
GBW
GM
ΦM
CIN
Gain Bandwidth Product
Gain Margin
Phase Margin
Input Capacitance
en Input-Referred Voltage Noise
Density
Input-Referred Voltage Noise
in Input-Referred Current Noise
tr Recovery time
CT Cross Talk
Conditions
RL = 10 kto V+/2
RL = 2 kto V+/2
RL = 10 kto V+/2
RL = 2 kto V+/2
Sourcing, VOUT = 2V
Sinking, VOUT = 0.5V
Per Amplifier
AV = +1, CL = 20 pF, RL = 10 k
VO = 2 VPP
CL = 20 pF, RL = 10 k
CL = 20 pF, RL = 10 k
CL = 20 pF, RL = 10 k
Common Mode
Differential Mode
f = 0.1 kHz or 10 kHz, AV = 1000
f = 0.1 kHz or 10 kHz, AV = 100
0.1 Hz to 10 Hz
0.01 Hz to 10 Hz
f = 1 kHz
to 0.1%, RL = 10 k, AV = −50,
VOUT = 1.25 VPP Step, Duration = 50 μs
LMP2022, f = 1 kHz
Min Typ Max Units
(Note 7) (Note 6) (Note 7)
38 50
70
62 85
115 mV
from either
30 45
rail
55
58 75
95
30 50
30 50
mA
0.95 1.10
1.37
mA
2.5 V/μs
5 MHz
10 dB
60 deg
12
pF
12
11
15 nV/
260
330 nVPP
350 fA/
50 µs
150 dB
5V Electrical Characteristics (Note 5)
Unless otherwise specified, all limits are guaranteed for TA = 25°C, V+ = 5V, V= 0V, VCM = V+/2, RL > 10 kto V+/2. Boldface
limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min Typ Max Units
(Note 7) (Note 6) (Note 7)
VOS Input Offset Voltage
−0.4 ±5
±10
μV
TCVOS Input Offset Voltage Drift (Note 8)
IB Input Bias Current
−0.004
±25
±0.02
±100
±300
μV/°C
pA
IOS Input Offset Current
±48 ±200
±250
pA
CMRR
CMVR
Common Mode Rejection Ratio
−0.2V VCM 4.2V
0V VCM 4.0V
Input Common-Mode Voltage Range Large Signal CMRR 120 dB
Large Signal CMRR 115 dB
120
115 139
–0.2
0
4.2
4.0
dB
V
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