LMP2021MA Datasheet, PDF (1/31 Pages) Texas Instruments – LMP2021/LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifiers

LMP2021, LMP2022
www.ti.com
SNOSAY9E – SEPTEMBER 2008 – REVISED MARGH 2013
LMP2021/LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifiers
Check for Samples: LMP2021, LMP2022
FEATURES
1
23(Typical Values, T_A = 25°C, V_S = 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, A_V = 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 VSSOP and 8-Pin SOIC
Packages
APPLICATIONS
• Precision Instrumentation Amplifiers
• Battery Powered Instrumentation
• Thermocouple Amplifiers
• Bridge Amplifiers
DESCRIPTION
The LMP2021/LMP2022 are single and dual precision
operational 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 attributes provide great precision in
high accuracy applications.
The proprietary continuous correction circuitry
ensures impressive CMRR and PSRR, removes the
1/f noise component, and eliminates the need for
calibration in many circuits.
With only 260 nV_PP (0.1 Hz to 10 Hz) of input voltage
noise and no 1/f noise component, the
LMP2021/LMP2022 are suitable for low frequency
applications such as industrial precision 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 applications. 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
VSSOP and 8-Pin SOIC packages.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
LMP is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2013, Texas Instruments Incorporated