Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
5962-0051201Q2A

5962-0051201Q2A

Texas Instruments

OPERATIONAL AMPLIFIER

95

TLC072IDGNR

TLC072IDGNR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8MSOP

2155

LMH6628MA/NOPB

LMH6628MA/NOPB

Texas Instruments

IC OPAMP VFB 2 CIRCUIT 8SOIC

3999975

TL33074DW

TL33074DW

Texas Instruments

IC OP AMP 16SOIC

557

LF353M

LF353M

Texas Instruments

IC OPAMP JFET 2 CIRCUIT 8SOIC

238

INA186A3IDCKT

INA186A3IDCKT

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

863

OPA2743PA

OPA2743PA

Texas Instruments

IC GP OPAMP 2 CIRCUIT 8DIP

20210

VCA2613Y/250-TI

VCA2613Y/250-TI

Texas Instruments

DUAL, VARIABLE GAIN AMPLIFIER W/

0

TLE2074MFKB

TLE2074MFKB

Texas Instruments

TLE2074M JFET-INPUT HIGH SPEED L

19

THS4500IDGK

THS4500IDGK

Texas Instruments

THS4500 15V, HIGH-SPEED FULLY D

29602

LMV344IPWR

LMV344IPWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

292

TLV2762CDR

TLV2762CDR

Texas Instruments

TLV2762 DUAL 1.8-V, MICRO-POWER,

7500

PGA113AIDGSTG4

PGA113AIDGSTG4

Texas Instruments

IC OPAMP PGA 1 CIRCUIT 10VSSOP

0

LME49860MAX/NOPB

LME49860MAX/NOPB

Texas Instruments

IC AUDIO 2 CIRCUIT 8SOIC

1248

OP07CDE4

OP07CDE4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

TLV2314QDRQ1

TLV2314QDRQ1

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

1305

OPA842IDG4

OPA842IDG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT 8SOIC

0

OPA187ID

OPA187ID

Texas Instruments

IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC

7859975

INA212CIDCKR

INA212CIDCKR

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

3213

INA212BIRSWR

INA212BIRSWR

Texas Instruments

IC CURR SENSE 1 CIRCUIT 10UQFN

1557

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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