Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LMV721M7X/NOPB

LMV721M7X/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SC70-5

7416

PGA204BP

PGA204BP

Texas Instruments

IC INST AMP 1 CIRCUIT 16DIP

335

TLV2241IDR

TLV2241IDR

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

401

THS3111IDGN

THS3111IDGN

Texas Instruments

THS3111 SINGLE, LOW NOISE, HIGH

6570

TL061ID

TL061ID

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8SOIC

503

LM324ADRE4

LM324ADRE4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

TL084IDR

TL084IDR

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

214

TLC2264AQDRG4

TLC2264AQDRG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

TLC274BIDR

TLC274BIDR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

18382

OPA836IDBVT

OPA836IDBVT

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-6

177610000

LMV831MGE/NOPB

LMV831MGE/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SC70-5

6957

INA118U

INA118U

Texas Instruments

IC INST AMP 1 CIRCUIT 8SOIC

11169975

LM833MMX/NOPB

LM833MMX/NOPB

Texas Instruments

IC AUDIO 2 CIRCUIT 8VSSOP

0

LM13700N

LM13700N

Texas Instruments

DUAL OPERATIONAL TRANSCONDUCTANC

7900

INA212CIDCKT

INA212CIDCKT

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

0

TL034CD

TL034CD

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

5184750

THS4509RGTT

THS4509RGTT

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 16QFN

758

OPA2694IDG4

OPA2694IDG4

Texas Instruments

IC OPAMP CFA 2 CIRCUIT 8SOIC

0

LM324AM

LM324AM

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

THP210DGKT

THP210DGKT

Texas Instruments

HIGH PRECISION (40-V, 0.1V/C), H

308

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

1. Overview

Linear amplifiers are analog ICs that process continuous signals with high fidelity. This category includes instrumentation amplifiers (In-Amps), operational amplifiers (OP Amps), and buffer amplifiers. They are critical in signal conditioning, filtering, and voltage amplification across electronics, medical devices, and industrial systems.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Instrumentation AmplifiersHigh CMRR, low offset voltage, fixed/gain-programmableSensor bridges, medical instrumentation, precision data acquisition
Operational AmplifiersVoltage feedback, high gain, configurable circuitsActive filters, integrators, comparators, audio amplifiers
Buffer AmplifiersHigh input impedance, unity gain, drive capabilityADC drivers, signal isolation, impedance matching

3. Structure and Composition

Typical IC construction includes: - Differential Input Stage: Bipolar/JFET transistors for high impedance - Gain Stage: Cascoded amplification with laser-trimmed resistors - Output Stage: Class AB push-pull for low distortion - Protection Circuits: ESD protection, thermal shutdown Packaged in 8-20 pin configurations (SOIC, TSSOP, QFN).

4. Key Technical Specifications

ParameterImportance
Gain Bandwidth Product (GBP)Determines frequency response capability
Input Offset Voltage (Vos)Impacts DC precision in low-level signal amplification
Slew Rate (SR)Defines maximum signal transition speed
Common-Mode Rejection Ratio (CMRR)Measures noise/interference immunity
Quiescent Current (Iq)Impacts power efficiency in battery applications

5. Application Fields

  • Medical: ECG machines, blood analyzers
  • Industrial: PLCs, strain gauge interfaces
  • Consumer: Audio preamplifiers, sensor hubs
  • Telecom: Fiber optic transimpedance amplifiers
  • Automotive: Battery management system sensors

6. Leading Manufacturers and Products

ManufacturerProduct Highlights
Analog DevicesAD8221 (Instrumentation Amp), OP1177 (Precision OP Amp)
TILM741 (Classic OP Amp), INA128 (Low-power In-Amp)
STMicroelectronicsTSV912 (Rail-to-Rail OP Amp), LMV358 (Low-voltage Buffer)
MaximMAX4463 (Audio Buffer), MAX41460 (High-speed OP Amp)

7. Selection Guidelines

Key considerations: - Bandwidth vs. power consumption trade-off - Required CMRR in noisy environments - Rail-to-rail output for low-voltage systems - Temperature stability in industrial applications - Cost-sensitive vs. precision design priorities

8. Industry Trends

Future directions include: - Sub-1V operation for IoT devices - Integration with digital calibration (smart amplifiers) - GaN/SiC-based amplifiers for high-voltage applications - AI-driven parameter optimization tools - Automotive-grade amplifiers for ADAS systems

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