Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TLC27L1CD

TLC27L1CD

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

525

OPA134UAE4

OPA134UAE4

Texas Instruments

IC AUDIO 1 CIRCUIT 8SOIC

0

TLV9002SIDGSR

TLV9002SIDGSR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 10VSSOP

2107

TL034CNG4

TL034CNG4

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14DIP

0

OPA404AG

OPA404AG

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14CDIP

3

TLV272IDGK

TLV272IDGK

Texas Instruments

IC CMOS 2 CIRCUIT 8VSSOP

313

TLV2422CDR

TLV2422CDR

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8SOIC

24975

OPA2191IDGKR

OPA2191IDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

2686

TLC272BCDRG4

TLC272BCDRG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

TLC2262IP

TLC2262IP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

318

TLV9151SIDBVR

TLV9151SIDBVR

Texas Instruments

OPAMP

2845

OPA2316IDRGT

OPA2316IDRGT

Texas Instruments

IC CMOS 2 CIRCUIT 8SON

4914

OPA380AIDGKRG4

OPA380AIDGKRG4

Texas Instruments

IC OPAMP TRANSIMP 1 CIRC 8VSSOP

0

LMC662AIMX/NOPB

LMC662AIMX/NOPB

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

27773

TLV2784ID

TLV2784ID

Texas Instruments

TLV2784 QUAD 1.8V RRIO, 8MHZ AMP

23078

INA181A1QDBVRQ1

INA181A1QDBVRQ1

Texas Instruments

IC CURR SENSE 1 CIRCUIT SOT23-6

4671

TLV2172IDGKT

TLV2172IDGKT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

518

TLC27M2CP

TLC27M2CP

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8DIP

516

TSV914AQDRQ1

TSV914AQDRQ1

Texas Instruments

AUTOMOTIVE QUALIFIED, 4-CHANNEL

2445

LOG102AIDR

LOG102AIDR

Texas Instruments

IC LOG/LOG RATIO 1 CIRC 14SOIC

15652

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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