LMP2022MA/NOPB National Semiconductor, LMP2022MA/NOPB Datasheet

IC OP AMP DUAL LOW NOISE 8SOIC

LMP2022MA/NOPB

Manufacturer Part Number
LMP2022MA/NOPB
Description
IC OP AMP DUAL LOW NOISE 8SOIC
Manufacturer
National Semiconductor
Series
LMP®r
Datasheet

Specifications of LMP2022MA/NOPB

Amplifier Type
Chopper (Zero-Drift)
Number Of Circuits
2
Slew Rate
2.6 V/µs
Gain Bandwidth Product
5MHz
Current - Input Bias
25pA
Voltage - Input Offset
0.4µV
Current - Supply
1.1mA
Current - Output / Channel
50mA
Voltage - Supply, Single/dual (±)
2.2 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
-3db Bandwidth
-
Other names
*LMP2022MA/NOPB
LMP2022MA
© 2009 National Semiconductor Corporation
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
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 nV
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.
Typical Application
The LMP2021/LMP2022 support systems with up to 24 bits of accuracy.
LMP
®
is a registered trademark of National Semiconductor Corporation.
PP
(0.1 Hz to 10 Hz) of input voltage noise
300149
LMP2021/LMP2022
®
precision
Bridge Amplifier
Features
(Typical Values, T
Applications
Input offset voltage (typical)
Input offset voltage (max)
Input offset voltage drift (typical)
Input offset voltage drift (max)
Input voltage noise, A
Open loop gain
CMRR
PSRR
Supply voltage range
Supply current (per amplifier)
Input bias current
GBW
Slew rate
Operating temperature range
5-Pin SOT-23, 8-Pin MSOP and 8-Pin SOIC Packages
Precision instrumentation amplifiers
Battery powered instrumentation
Thermocouple amplifiers
Bridge amplifiers
A
= 25°C, V
V
= 1000
S
= 5V)
−40°C to 125°C
www.national.com
July 23, 2009
-0.004 µV/°C
2.2V to 5.5V
±0.02 µV/°C
11 nV/
2.6 V/µs
−0.4 µV
±25 pA
160 dB
139 dB
130 dB
1.1 mA
30014972
5 MHz
±5 µV
Hz

Related parts for LMP2022MA/NOPB

LMP2022MA/NOPB Summary of contents

Page 1

... 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. Typical Application The LMP2021/LMP2022 support systems with bits of accuracy. LMP ® registered trademark of National Semiconductor Corporation. © 2009 National Semiconductor Corporation LMP2021/LMP2022 Features (Typical Values, T ■ Input offset voltage (typical) ■ ...

Page 2

... Absolute Maximum Ratings 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 Machine Model Charge Device Model V Differential IN Supply Voltage ( – V − All Other Pins Output Short-Circuit Duration to V ...

Page 3

Symbol Parameter V Output Swing High OUT Output Swing Low I Linear Output Current OUT I Supply Current S SR Slew Rate (Note 10) GBW Gain Bandwidth Product G Gain Margin M Φ Phase Margin M C Input Capacitance IN ...

Page 4

Symbol Parameter EMIRR Electro-Magnetic Interference Rejection Ratio (Note 9) PSRR Power Supply Rejection Ratio A Large Signal Voltage Gain VOL V Output Swing High OUT Output Swing Low I Linear Output Current OUT I Supply Current S SR Slew Rate ...

Page 5

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 ...

Page 6

Typical Performance Characteristics Offset Voltage Distribution Offset Voltage Distribution Offset Voltage vs. Supply Voltage www.national.com Unless otherwise noted: T TCV 30014912 TCV 30014913 PSRR vs. Frequency 30014905 6 = 25°C, ...

Page 7

Input Bias Current vs Offset Voltage vs Supply Current vs. Supply Voltage (Per Amplifier) Input Bias Current vs. V 30014962 Offset Voltage vs. V 30014906 Input Voltage Noise vs. Frequency 30014904 7 CM 30014961 CM 30014907 ...

Page 8

Open Loop Frequency Response Open Loop Frequency Response Over Temperature EMIRR vs. Input Power www.national.com Open Loop Frequency Response 30014922 EMIRR vs. Frequency 30014923 EMIRR vs. Input Power 30014932 8 30014921 30014934 30014933 ...

Page 9

Time Domain Input Voltage Noise CMRR vs. Frequency Output Swing High vs. Supply Voltage Time Domain Input Voltage Noise 30014928 Slew Rate vs. Supply Voltage 30014931 Output Swing Low vs. Supply Voltage 30014909 9 30014929 30014916 30014911 www.national.com ...

Page 10

Output Swing High vs. Supply Voltage Overload Recovery Time Large Signal Step Response www.national.com Output Swing Low vs. Supply Voltage 30014908 Overload Recovery Time 30014942 Small Signal Step Response 30014920 10 30014910 30014943 30014918 ...

Page 11

Large Signal Step Response 30014919 Output Voltage vs. Output Current 30014924 Small Signal Step Response Cross Talk Rejection Ratio vs. Frequency (LMP2022) 11 30014917 30014973 www.national.com ...

Page 12

Application Information LMP2021/LMP2022 The LMP2021/LMP2022 are single and dual precision oper- ational amplifiers with ultra low offset voltage, ultra low offset voltage drift, and very low input voltage noise with no 1/f and extended supply voltage range. The LMP2021/LMP2022 of- ...

Page 13

ACHIEVING LOWER NOISE WITH FILTERING The low input voltage noise of the LMP2021/LMP2022, and no 1/f noise make these suitable for many applications with noise sensitive designs. Simple filtering can be done on the LMP2021/LMP2022 to remove high frequency noise. ...

Page 14

Table 1: RMS Input Noise Performance RMS Input Noise (nV) System Amplifier Bandwidth LMP2021/LMP2022 Gain Requirement (V/V) Figure 3 (Hz) Circuit 100 229 10 1000 763 100 229 100 1000 763 10 71 1000 100 158 1000 608 * No ...

Page 15

In a typical I-V converter, the output voltage will be the sum of DC offset plus bias current and the applied signal through the feedback resistor conventional input stage, the in- verting input's capacitance has very little effect ...

Page 16

C in Figure 10 adds a zero to the low pass filter and hence IN eliminating the reduction the LMP2021/LMP2022. VOL An alternative circuit to achieve this is shown in Figure 11. FIGURE 11. Alternative Sensor Impedance ...

Page 17

FIGURE 12. LMP2021/LMP2022 used with ADC161S626 17 30014972 www.national.com ...

Page 18

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Pin SOT-23 NS Package Number MF05A 8-Pin SOIC NS Package Number M08A 18 ...

Page 19

MSOP NS Package Number MUA08A 19 www.national.com ...

Page 20

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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