Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
LT1991HDD#TRPBF

LT1991HDD#TRPBF

Analog Devices, Inc.

IC OPAMP PGA 1 CIRCUIT 10DFN

0

LT6200CS8-5#PBF

LT6200CS8-5#PBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

184

TS921ID

TS921ID

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8SO

1784

NCV33078DR2G

NCV33078DR2G

OPERATIONAL AMPLIFIER, 2 FUNC, P

18184

LTC2067HMS8#TRPBF

LTC2067HMS8#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP

0

HFA1245MJ/883

HFA1245MJ/883

OPERATIONAL AMPLIFIER W/OUTPUT D

350

MCP6241-E/SN

MCP6241-E/SN

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT 8SOIC

1400

LMV321M7/NOPB

LMV321M7/NOPB

Texas Instruments

IC OPAMP GP 1 CIRCUIT SC70-5

2147483647

TLC2274AQDRG4

TLC2274AQDRG4

Texas Instruments

TLC2274A ADVANCED LINCMOS RAIL-T

2500

MCP655-E/MF

MCP655-E/MF

Roving Networks / Microchip Technology

IC OPAMP GP 2 CIRCUIT 10DFN

252

BA4560RFVT-E2

BA4560RFVT-E2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

0

THS4121CDGKR

THS4121CDGKR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8VSSOP

0

TSV850AILT

TSV850AILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-6

0

TLV2474QDRG4Q1

TLV2474QDRG4Q1

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

2507

OPA2354AIDDA

OPA2354AIDDA

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOPWRPAD

493

LF353DT

LF353DT

STMicroelectronics

IC OPAMP JFET 2 CIRCUIT 8SO

9297

AD8421BRMZ-RL

AD8421BRMZ-RL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8MSOP

0

AD8051ARZ-REEL7

AD8051ARZ-REEL7

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

1114

THS4215D

THS4215D

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

30

OP260FZ

OP260FZ

Analog Devices, Inc.

DUAL OP AMP

1094

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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