Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ACNT-H87B-000E

ACNT-H87B-000E

Broadcom

IC OPAMP ISOLATION 1 CIRCUIT 8SO

0

HCPL-7851#300

HCPL-7851#300

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

ACPL-796J-560E

ACPL-796J-560E

Broadcom

IC OPAMP ISOLATION 1 CIRC 16SO

0

ACPL-785E-200

ACPL-785E-200

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

0

ACPL-798J-000E

ACPL-798J-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 16SOIC

34

HCPL-7840

HCPL-7840

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

526

ACPL-C87BT-000E

ACPL-C87BT-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8SSO

1878

ACPL-C87AT-500E

ACPL-C87AT-500E

Broadcom

IC OPAMP ISOLATION 1 CIRCUIT 8SO

1384

ACPL-C870-500E

ACPL-C870-500E

Broadcom

IC OPAMP ISOLATION 1 CIRCUIT 8SO

0

ACPL-C784-560E

ACPL-C784-560E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8SSO

0

HCPL-7800

HCPL-7800

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

0

ACPL-C78A-060E

ACPL-C78A-060E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8SSO

0

HCPL-7510-500E

HCPL-7510-500E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

3359

ACNT-H79A-500E

ACNT-H79A-500E

Broadcom

IC OPAMP ISOLATION 2 CIRCUIT 8SO

0

ACPL-782T-500E

ACPL-782T-500E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

951

ACPL-C78A-000E

ACPL-C78A-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8SSO

1393

HCPL-7800A-500E

HCPL-7800A-500E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

5201

HCPL-7850

HCPL-7850

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

0

ACPL-C78A-560E

ACPL-C78A-560E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8SSO

0

ACNT-H87B-500E

ACNT-H87B-500E

Broadcom

IC OPAMP ISOLATION 1 CIRCUIT 8SO

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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