Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OP492GSZ-REEL

OP492GSZ-REEL

Analog Devices, Inc.

QUAD SINGLE-SUPPLY OPERATIONAL A

10861

OP07DNZ

OP07DNZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

1058

ADA4800ACPZ-RL

ADA4800ACPZ-RL

Analog Devices, Inc.

IC BUFFER 1 CIRCUIT 6LFCSP

8473

LT1809IS6#TRPBF

LT1809IS6#TRPBF

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT TSOT23-6

0

AD8099ARDZ

AD8099ARDZ

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8SOIC

1492

AD8040AR

AD8040AR

Analog Devices, Inc.

IC GP OPAMP 4 CIRCUIT 14SOIC

222

MAX4131EBT+T

MAX4131EBT+T

Analog Devices, Inc.

IC GP OPAMP 1 CIRCUIT 6UCSP

29822

MAX4237EUT

MAX4237EUT

Analog Devices, Inc.

RAIL-RAIL OPERATIONAL AMPLIFIER

4775

LT6014AIDD#TRPBF

LT6014AIDD#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DFN

0

LTC2067IDD#TRPBF

LTC2067IDD#TRPBF

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 10DFN

0

AD648KR

AD648KR

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

1212

AD8045ACPZ-R2

AD8045ACPZ-R2

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT 8LFCSP

2

OP77FZ

OP77FZ

Analog Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8CERDIP

716

LT1812CS6#TRMPBF

LT1812CS6#TRMPBF

Analog Devices, Inc.

IC OPAMP VFB 1 CIRCUIT TSOT23-6

0

LTC2068HF#PBF

LTC2068HF#PBF

Analog Devices, Inc.

10UA QUAD CHANNEL, LOW IB, ZERO-

95

AD8572ARZ-REEL7

AD8572ARZ-REEL7

Analog Devices, Inc.

IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC

939

AD8250ARMZ

AD8250ARMZ

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 10MSOP

1043

ADA4062-2ARZ-R7

ADA4062-2ARZ-R7

Analog Devices, Inc.

IC OPAMP JFET 2 CIRCUIT 8SOIC

1991

ADA4895-2ARMZ-RL

ADA4895-2ARMZ-RL

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT 10MSOP

0

AMP01GSZ-REEL

AMP01GSZ-REEL

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 20SOIC

0

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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