Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA381AIDGKT

OPA381AIDGKT

Texas Instruments

IC OPAMP TRANSIMP 1 CIRC 8VSSOP

44010000

TLC274IDG4

TLC274IDG4

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

0

TL062ACDRE4

TL062ACDRE4

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

TLE2161IP

TLE2161IP

Texas Instruments

OPERATIONAL AMPLIFIER

2150

TLV2464IPW

TLV2464IPW

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

20

OPA2322AQDGKRQ1

OPA2322AQDGKRQ1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

TLV2453CD

TLV2453CD

Texas Instruments

TLV2453 DUAL MICROPOWER RAIL-TO-

24115

THS4131IDGKG4

THS4131IDGKG4

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8VSSOP

0

OPA2325IDR

OPA2325IDR

Texas Instruments

IC CMOS 2 CIRCUIT 8SOIC

1348

TLV2372IDGKR

TLV2372IDGKR

Texas Instruments

TLV2372 DUAL 550-UA/CHANNEL, 3MH

4546

OPA1S2385IDRCR

OPA1S2385IDRCR

Texas Instruments

OPA1S2385 250-MHZ, CMOS TRANSIMP

136801

TLV2401IP

TLV2401IP

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

420

OPA316QDBVTQ1

OPA316QDBVTQ1

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

390

THS4531AIDGKR

THS4531AIDGKR

Texas Instruments

IC OPAMP DIFF 1 CIRCUIT 8VSSOP

0

INA190A3IRSWR

INA190A3IRSWR

Texas Instruments

IC CURR SENSE 1 CIRCUIT 10UQFN

0

LMV824MX/NOPB

LMV824MX/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

2868

INA217AIPG4

INA217AIPG4

Texas Instruments

IC INST AMP 1 CIRCUIT 8DIP

82

THS7530PWP

THS7530PWP

Texas Instruments

IC OPAMP VGA 1 CIRCUIT 14HTSSOP

625

TSV912AIDSGR

TSV912AIDSGR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8WSON

2555

THS4225DGK

THS4225DGK

Texas Instruments

THS4225 - SINGLE LOW-DISTORTION

25923

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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