Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA188AIDGKR

OPA188AIDGKR

Texas Instruments

IC OPAMP ZERO-DRIFT 1CIRC 8VSSOP

0

AS358GTR-E1

AS358GTR-E1

Zetex Semiconductors (Diodes Inc.)

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

INA240A3D

INA240A3D

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8SOIC

0

CA3140M

CA3140M

Intersil (Renesas Electronics America)

IC GP OPAMP 1 CIRCUIT 8SOIC

9882

AD8091ART-REEL

AD8091ART-REEL

Analog Devices, Inc.

IC VOLT FEEDBACK 1CIRC SOT23-5

29840

AD8031ARTZ-R2

AD8031ARTZ-R2

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT SOT23-5

3808

MAX4490AUK-T

MAX4490AUK-T

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT SOT23-5

29500

TLV2334IPWR

TLV2334IPWR

Texas Instruments

TLV2334 QUAD LOW-VOLTAGE LOW-POW

8000

AD8476BRMZ-RL

AD8476BRMZ-RL

Analog Devices, Inc.

IC OPAMP DIFF 1 CIRCUIT 8MSOP

0

OP237EN#PBF

OP237EN#PBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14DIP

0

MAX427CPA+

MAX427CPA+

Analog Devices, Inc.

PRECISION OPERATIONAL AMPLIFIER

11886

MAX4402ASA+T

MAX4402ASA+T

Analog Devices, Inc.

MAX4402 DUAL, LOW-COST, SINGLE-S

7500

MCP6071T-E/OT

MCP6071T-E/OT

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT SOT23-5

0

MAX4377TAUA+T

MAX4377TAUA+T

Maxim Integrated

IC CURR SENSE 2 CIRCUIT 8UMAX

5000

OPA4137P

OPA4137P

Burr-Brown (Texas Instruments)

OPA4137 LOW COST FET-INPUT OPERA

6063

LT1793AIS8#PBF

LT1793AIS8#PBF

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SO

304

AD8602AR-REEL

AD8602AR-REEL

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

9000

AD8555ARZ

AD8555ARZ

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

79

LTC6259IMS#TRPBF

LTC6259IMS#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

0

TLV2461AQPWRG4Q1

TLV2461AQPWRG4Q1

Texas Instruments

TLV2461A-Q1 SINGLE 6.4MHZ AUTOMO

26088

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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