LP2989AILD-3.3 is a low-dropout (LDO) voltage regulator developed by Texas Instruments
Specifications
MFR:
Texas Instruments
Product Number:
OPA211AIDR
Description:
Standard (General Purpose) Amplifier 1 Circuit Rail-to-Rail 8-SOIC
Highlight:
Texas Instruments LDO voltage regulator
,LP2989AILD-3.3 voltage regulator
,low-dropout regulator with warranty
Introduction
LP2989AILD-3.3 Low-Dropout (LDO) Voltage Regulator
The LP2989AILD-3.3 is a high-performance dual operational amplifier (op-amp) developed by Texas Instruments (TI), belonging to the precision op-amp category. It is celebrated for its ultra-low noise, high precision, and excellent dynamic performance, making it ideal for demanding signal conditioning and amplification scenarios.
Key Features
- Ultra-Low Input Noise: Features extremely low voltage noise density (typically 3.5 nV/√Hz at 1 kHz) and low current noise (typically 0.6 pA/√Hz at 1 kHz), minimizing signal degradation for weak signal amplification.
- High Open-Loop Gain: 140 dB typical open-loop gain ensures precise signal amplification with minimal linearity error, even with complex loads or high gain settings.
- Low Input Offset Voltage: 100 µV typical input offset voltage with only 0.8 µV/°C drift guarantees high DC accuracy for stable signal amplification.
- Wide Bandwidth: 4 MHz gain-bandwidth product and 2 V/µs slew rate enable handling of high-frequency AC signals with minimal distortion.
- Low Input Bias Current: 20 nA typical input bias current reduces loading effects on high-impedance signal sources.
- Dual Amplifier Integration: Two matched amplifiers in a single 8-pin SOIC package save board space and ensure consistent performance between channels.
- Wide Supply Voltage Range: Operates from ±5 V to ±18 V for flexible integration into various analog systems.
Applications
- Precision Sensor Signal Conditioning: Ideal for strain gauges, load cells, thermocouples, and photodiodes where low noise and high accuracy are critical.
- Audio Equipment: Used in high-end audio systems including preamplifiers and headphone amplifiers with 0.0006% THD+N for high-fidelity sound.
- Test and Measurement: Essential for oscilloscopes, data acquisition systems, and spectrum analyzers requiring accurate signal measurement.
- Medical Electronics: ECG machines, blood pressure monitors, and pulse oximeters benefit from reliable amplification of weak physiological signals.
- Industrial Control Systems: Used in process control loops and feedback systems for precise sensor signal conditioning.
- Communications Equipment: Enhances SNR in RF front-ends and baseband signal processing modules.
- Balanced Signal Processing: Simplifies design of differential amplifiers for balanced audio interfaces and instrumentation systems.
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