Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA381AIDGKT

OPA381AIDGKT

Texas Instruments

IC OPAMP TRANSIMP 1 CIRC 8VSSOP

44010000

TLC274IDG4

TLC274IDG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

HA2-5137A-5

HA2-5137A-5

OPERATIONAL AMPLIFIER

386

ADA4637-1ARZ-RL

ADA4637-1ARZ-RL

Analog Devices, Inc.

IC OPAMP JFET 1 CIRCUIT 8SOIC

0

TL062ACDRE4

TL062ACDRE4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

MCP6401T-H/OT

MCP6401T-H/OT

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT SOT23-5

685

TLE2161IP

TLE2161IP

Texas Instruments

OPERATIONAL AMPLIFIER

2150

TLV2464IPW

TLV2464IPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

20

BA2904HFVM-CTR

BA2904HFVM-CTR

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8MSOP

2209

LT1784CS6#TRPBF

LT1784CS6#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

OPA2322AQDGKRQ1

OPA2322AQDGKRQ1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

MAX4477AUA+T

MAX4477AUA+T

Maxim Integrated

IC OPAMP GP 2 CIRCUIT 8UMAX

2315

ALD1701PAL

ALD1701PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

LM2904YPT

LM2904YPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

5312

CA0741CT

CA0741CT

IC GP OPAMP 1 CIRCUIT TO99-8

0

HA7-2842/883

HA7-2842/883

VIDEO OPERATIONAL AMPLIFIER

0

LMH6732MAX/NOPB

LMH6732MAX/NOPB

IC CFA 1 CIRCUIT 8SOIC

37500

TLV2453CD

TLV2453CD

Texas Instruments

TLV2453 DUAL MICROPOWER RAIL-TO-

24115

MCP6001T-I/OT

MCP6001T-I/OT

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT SOT23-5

0

BA4560FJ-GE2

BA4560FJ-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT SOP8J

124

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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