Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TL072QDREP

TL072QDREP

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

0

TLC2652IP

TLC2652IP

Texas Instruments

TLC2652 PRECISION CHOPPER-STABIL

10007

LM358BIDR

LM358BIDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

2440

OPA643PB

OPA643PB

Texas Instruments

OPERATIONAL AMPLIFIER

1035

LMH6628MA-TI

LMH6628MA-TI

Texas Instruments

OP AMP, 2 FUNC, 2000UV OFFSET-MA

9000

LM324APWR

LM324APWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

0

OPA2317IDGKR

OPA2317IDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

TLE2064ACD

TLE2064ACD

Texas Instruments

IC OPAMP JFET 4 CIRCUIT 14SOIC

250

INA321E/2K5

INA321E/2K5

Texas Instruments

INSTRUMENTATION AMPLIFIER, 1 FUN

327500

TLV2785AIPW

TLV2785AIPW

Texas Instruments

OPERATIONAL AMPLIFIER

678

INA211CQDCKRQ1

INA211CQDCKRQ1

Texas Instruments

INA211-Q1 - AEC-Q100, 26V, BI-DI

23868

OPA2187IDGKR

OPA2187IDGKR

Texas Instruments

IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP

14325

TLV2264AQD

TLV2264AQD

Texas Instruments

TLV2264A ADVANCED LINCMOS RAIL-T

4380

BUF634T

BUF634T

Texas Instruments

IC BUFFER 1 CIRCUIT TO220-5

2120

INA317IDGKR

INA317IDGKR

Texas Instruments

IC OPAMP ZERO-DRIFT 1CIRC 8VSSOP

2470

LM2904VQDRQ1

LM2904VQDRQ1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

639

TLE2144AIN

TLE2144AIN

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14DIP

393425

LMH6882SQ/NOPB

LMH6882SQ/NOPB

Texas Instruments

IC OPAMP DIFF 2 CIRCUIT 36WQFN

0

TLV2460IDBVT

TLV2460IDBVT

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-6

332

INA240A2QPWRQ1

INA240A2QPWRQ1

Texas Instruments

IC CURR SENSE 1 CIRCUIT 8TSSOP

2356

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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