Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TL062BCDG4

TL062BCDG4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

ISL28408FBZ-T7

ISL28408FBZ-T7

Intersil (Renesas Electronics America)

IC OPAMP GP 4 CIRCUIT 14SOIC

3000

OPA4209AIPWR

OPA4209AIPWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

12212

MAX9920ASA+T

MAX9920ASA+T

Maxim Integrated

IC CURR SENSE 1 CIRCUIT 8SOIC

1538

CS3001-IS

CS3001-IS

Cirrus Logic

PRECISION LOW-VOLTAGE AMPLIFIER

2960

MAX4286EUT-T

MAX4286EUT-T

Analog Devices, Inc.

IC BUFFER 1 CIRCUIT SOT23-6

12500

LT1127CSW#TRPBF

LT1127CSW#TRPBF

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 16SO

0

TS27M2CDT

TS27M2CDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

13430

TLC074CPWPG4

TLC074CPWPG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 20HTSSOP

0

5962-8963601GC

5962-8963601GC

HA-5002 WIDEBAND, HIGH SLEW RATE

21

ALD4706BSBL

ALD4706BSBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

0

LT1211IS8#TRPBF

LT1211IS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8SO

0

TLV341IDBVT

TLV341IDBVT

Texas Instruments

IC GP OPAMP 1 CIRCUIT SOT23-6

17996

CLC1010IST5X

CLC1010IST5X

MaxLinear

IC OPAMP VFB 1 CIRCUIT SOT23-5

1132

TLV2473CN

TLV2473CN

Texas Instruments

OPERATIONAL AMPLIFIER

5400

MAX4323EUT

MAX4323EUT

Analog Devices, Inc.

OPERATIONAL AMPLIFIER

1305

MCP654-E/ST

MCP654-E/ST

Roving Networks / Microchip Technology

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

MCP6024-E/P

MCP6024-E/P

Roving Networks / Microchip Technology

IC OPAMP GP 4 CIRCUIT 14DIP

202

TL071MLB

TL071MLB

Texas Instruments

OPERATIONAL AMPLIFIER

5974

AD815ARB-24

AD815ARB-24

Analog Devices, Inc.

IC DIFF 2 CIRC 24SOIC W/BATWING

37674

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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