Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TS1854ID

TS1854ID

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

0

LM2904AWYPT

LM2904AWYPT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8TSSOP

3726

TSC1021AIPT

TSC1021AIPT

STMicroelectronics

IC CURR SENSE 1 CIRCUIT 8TSSOP

0

TS27M2BIDT

TS27M2BIDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

0

TS924IYPT

TS924IYPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

2500

TSV912HYDT

TSV912HYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

5622

TSV6393AIST

TSV6393AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 10MINISO

0

TSV912IYDT

TSV912IYDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

2086

TSV914IPT

TSV914IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

13001

OA2NP34S

OA2NP34S

STMicroelectronics

IC CMOS 2 CIRCUIT 8MINISO

0

TSV621AICT

TSV621AICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

2957

TS522IN

TS522IN

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8DIP

0

TSV850ILT

TSV850ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-6

0

LM258ADT

LM258ADT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

3681

TS271ACN

TS271ACN

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8DIP

0

LM224ADT

LM224ADT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

0

LMV358IDT

LMV358IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

17707

TS954IYDT

TS954IYDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

0

TSV714IPT

TSV714IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

97

TSV522IYST

TSV522IYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

3519

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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