Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TS971IDT

TS971IDT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8SO

16777

TSU101RICT

TSU101RICT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SC70-5

0

LM324APT

LM324APT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

10437

TSZ181ILT

TSZ181ILT

STMicroelectronics

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

0

TSB571ILT

TSB571ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

3237

TSX9292IYDT

TSX9292IYDT

STMicroelectronics

IC CMOS 2 CIRCUIT 16MHZ 8SO

2450

TS921IPT

TS921IPT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8TSSOP

3675

LMV321LILT

LMV321LILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

48051

TSH24IDT

TSH24IDT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14SO

1875

TS931ID

TS931ID

STMicroelectronics

IC OPAMP GP 1 CIRCUIT 8SO

0

TS272IDT

TS272IDT

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

3

LM358AWST

LM358AWST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

7300

TS27L2CD

TS27L2CD

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8SO

1998

TSC102IYPT

TSC102IYPT

STMicroelectronics

IC CURR SENSE 1 CIRCUIT 8TSSOP

0

TSX632AIYST

TSX632AIYST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

TSV634IPT

TSV634IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

462

TSV635AIPT

TSV635AIPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 16TSSOP

2500

TS1852AIST

TS1852AIST

STMicroelectronics

IC OPAMP GP 2 CIRCUIT 8MINISO

0

TS971ILT

TS971ILT

STMicroelectronics

IC OPAMP GP 1 CIRCUIT SOT23-5

41418

TSV734IPT

TSV734IPT

STMicroelectronics

IC OPAMP GP 4 CIRCUIT 14TSSOP

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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