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LMP2021

更新时间： 2024-11-04 05:42:27

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
20页	680K
描述
Zero Drift, Low Noise, EMI Hardened Amplifiers

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中文翻译

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LMP2021 数据手册

July 23, 2009

LMP2021/LMP2022

Zero Drift, Low Noise, EMI Hardened Amplifiers

General Description

Features

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.

(Typical Values, T_A= 25°C, V_S= 5V)

Input offset voltage (typical)

Input offset voltage (max)

Input offset voltage drift (typical)

Input offset voltage drift (max)

Input voltage noise, A_V= 1000

Open loop gain

CMRR

−0.4 µV

±5 µV

-0.004 µV/°C

±0.02 µV/°C

11 nV/√Hz

160 dB

139 dB

130 dB

2.2V to 5.5V

1.1 mA

■

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.

PSRR

Supply voltage range

Supply current (per amplifier)

Input bias current

GBW

Slew rate

Operating temperature range

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 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.

±25 pA

5 MHz

2.6 V/µs

−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

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.

Bridge amplifiers

Typical Application

Bridge Amplifier

30014972

The LMP2021/LMP2022 support systems with up to 24 bits of accuracy.

LMP^®is a registered trademark of National Semiconductor Corporation.

300149

www.national.com

12 3 4 5 6 7...20

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与LMP2021相关器件

型号	品牌	获取价格	描述	数据表
LMP2021MA	NSC	获取价格	Zero Drift, Low Noise, EMI Hardened Amplifiers
LMP2021MA/NOPB	TI	获取价格	零漂移、低噪声、抗 EMI 单通道放大器 \| D \| 8 \| -40 to 125
LMP2021MAX	NSC	获取价格	Zero Drift, Low Noise, EMI Hardened Amplifiers
LMP2021MAX/NOPB	TI	获取价格	零漂移、低噪声、抗 EMI 单通道放大器 \| D \| 8 \| -40 to 125
LMP2021MF	NSC	获取价格	Zero Drift, Low Noise, EMI Hardened Amplifiers
LMP2021MF/NOPB	NSC	获取价格	IC OP-AMP, 10 uV OFFSET-MAX, 5 MHz BAND WIDTH, PDSO5, GREEN, SOT-23, 5 PIN, Operational Am
LMP2021MF/NOPB	TI	获取价格	零漂移、低噪声、抗 EMI 单通道放大器 \| DBV \| 5 \| -40 to 125
LMP2021MFE	NSC	获取价格	Zero Drift, Low Noise, EMI Hardened Amplifiers
LMP2021MFE/NOPB	TI	获取价格	零漂移、低噪声、抗 EMI 单通道放大器 \| DBV \| 5 \| -40 to 125
LMP2021MFX	NSC	获取价格	Zero Drift, Low Noise, EMI Hardened Amplifiers

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