Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ADA4528-1ARMZ-R7

ADA4528-1ARMZ-R7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1 CIRC 8MSOP

6397

LTC2068IF#PBF

LTC2068IF#PBF

Analog Devices, Inc.

10UA QUAD CHANNEL, LOW IB, ZERO-

69

SSM2143S

SSM2143S

Analog Devices, Inc.

IC AUDIO 1 CIRCUIT 8SOIC

2451

HTC-0300A

HTC-0300A

Analog Devices, Inc.

HYBRID TRACK AND HOLD AMPLIFIER

48

AD847JN

AD847JN

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8DIP

922

AD8040ARUZ-REEL7

AD8040ARUZ-REEL7

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14TSSOP

300

MAX4012EUK

MAX4012EUK

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

8010

LTC6256ITS8#TRMPBF

LTC6256ITS8#TRMPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT TSOT23-8

0

OP281GS

OP281GS

Analog Devices, Inc.

IC GP OPAMP 2 CIRCUIT 8SOIC

2553

LTC2063ISC6#TRMPBF

LTC2063ISC6#TRMPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 1CIRC SC70-6

358

AD844JR-16-REEL

AD844JR-16-REEL

Analog Devices, Inc.

IC CFA 1 CIRCUIT 16SOIC

6500

AD8005AR

AD8005AR

Analog Devices, Inc.

IC CFA 1 CIRCUIT 8SOIC

65763

OP462DS

OP462DS

Analog Devices, Inc.

IC INST AMP 4 CIRCUIT 14SOIC

0

MAX9628ATC+T

MAX9628ATC+T

Analog Devices, Inc.

IC DIFF 1 CIRCUIT 12TQFN

62500

MAX4189ESD

MAX4189ESD

Analog Devices, Inc.

IC CFA 3 CIRCUIT 14SOIC

475

AD8397ARZ-REEL

AD8397ARZ-REEL

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 8SOIC

0

OP37GS8#TRPBF

OP37GS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SO

0

MAX4289ESA

MAX4289ESA

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 8SOIC

2898

OP484ESZ

OP484ESZ

Analog Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

862

OP14CJ

OP14CJ

Analog Devices, Inc.

DUAL MATCHED HIGH PERF OP AMP

2182

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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