Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
HCPL-7520-500E

HCPL-7520-500E

Broadcom

IC CURR SENSE 1 CIRCUIT 8DIPGW

3208

HCPL-7851#200

HCPL-7851#200

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

0

HCPL-7800-500E

HCPL-7800-500E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

HCPL-7510-360E

HCPL-7510-360E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

5962-9755701HXA

5962-9755701HXA

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

HCPL-7510

HCPL-7510

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

0

HCPL-7800A#500

HCPL-7800A#500

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

ACNT-H79B-000E

ACNT-H79B-000E

Broadcom

IC OPAMP ISOLATION 1 CIRCUIT 8SO

173

HCPL-7800#300

HCPL-7800#300

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

ACPL-790A-300E

ACPL-790A-300E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

HCPL-7510-000E

HCPL-7510-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

8

HCPL-7510-560E

HCPL-7510-560E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

HCPL-788J

HCPL-788J

Broadcom

IC OPAMP ISOLATION 1 CIRC 16SO

220

HCPL-7800A

HCPL-7800A

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

499

ACPL-790B-000E

ACPL-790B-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

0

HCPL-7510-300

HCPL-7510-300

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

0

ACPL-C784-000E

ACPL-C784-000E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8SSO

403

ACNT-H79A-000E

ACNT-H79A-000E

Broadcom

IC OPAMP ISOLATION 1 CIRCUIT 8SO

74

HCPL-7851

HCPL-7851

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIP

53

HCPL-7840-560E

HCPL-7840-560E

Broadcom

IC OPAMP ISOLATION 1 CIRC 8DIPGW

1159

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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