Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LM358DG

LM358DG

OPERATIONAL AMPLIFIER

176628

OPA2364AIDGKTG4

OPA2364AIDGKTG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

LM741H/NOPB

LM741H/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT TO99-8

860

THS4032IDGN

THS4032IDGN

Texas Instruments

THS4032 100-MHZ LOW NOISE VOLTAG

27899

OP292GSZ

OP292GSZ

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SOIC

180

LT1210CT7#37PBF

LT1210CT7#37PBF

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT TO220-7

0

LMH6629MF/NOPB

LMH6629MF/NOPB

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

ISL28345FBZ-T13

ISL28345FBZ-T13

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ADA4505-4ACBZ-R7

ADA4505-4ACBZ-R7

Analog Devices, Inc.

IC OPAMP VFB 4 CIRCUIT 14WLCSP

6575

LT6236HS6#TRMPBF

LT6236HS6#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

1182

MCP6482-E/SN

MCP6482-E/SN

Roving Networks / Microchip Technology

IC OPAMP GP 2 CIRCUIT 8SOIC

397

THS4012CD

THS4012CD

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

5319975

AD204KY

AD204KY

Analog Devices, Inc.

IC OPAMP ISOLATION 4 CIRC 10SIP

4

5962-8770602GA

5962-8770602GA

Analog Devices, Inc.

OP AMP (OP17BJ)

607

OPA2375IDDFR

OPA2375IDDFR

Texas Instruments

LOW BROADBAND NOISE, 10-MHZ, 500

2823

TSX634AIYPT

TSX634AIYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

OPA2333AIDRBT

OPA2333AIDRBT

Texas Instruments

IC OPAMP ZERO-DRIFT 2 CIRC 8SON

884

AS324GTR-G1

AS324GTR-G1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

AD8604ARUZ-REEL

AD8604ARUZ-REEL

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14TSSOP

8435

MAX4240EUK+T

MAX4240EUK+T

Maxim Integrated

IC OPAMP GP 1 CIRCUIT SOT23-5

2149

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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