Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
TL061BCPG4

TL061BCPG4

Texas Instruments

IC OPAMP JFET 1 CIRCUIT 8DIP

0

LM4562MAX/NOPB

LM4562MAX/NOPB

Texas Instruments

IC AUDIO 2 CIRCUIT 8SOIC

4652

LM2904QDRG4Q1

LM2904QDRG4Q1

Texas Instruments

LM2904-Q1 AUTOMOTIVE CATALOG DUA

2110

OPA2313IDRGT

OPA2313IDRGT

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SON

1057

LM4562NA/NOPB

LM4562NA/NOPB

Texas Instruments

IC AUDIO 2 CIRCUIT 8DIP

397

LMP2232AMAX/NOPB

LMP2232AMAX/NOPB

Texas Instruments

LMP2232 DUAL, MICROPOWER, 1.6V,

30000

INA115AU/1K

INA115AU/1K

Texas Instruments

INA115 PRECISION INSTRUMENTATION

83191

TLV2460IDR

TLV2460IDR

Texas Instruments

TLV2460 SINGLE, LOW POWER, RAIL-

38300

INA190A4IDDFR

INA190A4IDDFR

Texas Instruments

IC CURR SENSE 1 CIRCUIT SOT23-8

2536

TLV27L1IDR

TLV27L1IDR

Texas Instruments

TLV27L1 11-UA/CHANNEL, 160KHZ, R

0

TLV2785INE4

TLV2785INE4

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16DIP

0

5962-9080901M2A

5962-9080901M2A

Texas Instruments

TLE2064M JFET-INPUT LOW POWER HI

476

TLV2404IN

TLV2404IN

Texas Instruments

TLV2404 QUAD MICROPOWER, RRIO OP

10241

VCA2611Y/2K

VCA2611Y/2K

Texas Instruments

IC VARIABLE GAIN 2 CIRC 48TQFP

9350

LMV824M/NOPB

LMV824M/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

470

OPA2378AIDCNT

OPA2378AIDCNT

Texas Instruments

IC OPAMP ZER-DRIFT 2CIRC SOT23-8

3242

TLV2711IDBVTG4

TLV2711IDBVTG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

OPA847ID

OPA847ID

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

1642

MCP6291IDBVR

MCP6291IDBVR

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

2882

TLV2775IDG4

TLV2775IDG4

Texas Instruments

IC GP OPAMP 4 CIRCUIT 16SOIC

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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