Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
OPA2197IDGKR

OPA2197IDGKR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8VSSOP

0

5962-9460203Q2A

5962-9460203Q2A

Texas Instruments

TLE2074M JFET-INPUT HIGH SPEED L

0

OPA4325IPW

OPA4325IPW

Texas Instruments

IC CMOS 4 CIRCUIT 14TSSOP

904

INA331IDGKTG4

INA331IDGKTG4

Texas Instruments

IC INST AMP 1 CIRCUIT 8VSSOP

0

OPA3691IDG4

OPA3691IDG4

Texas Instruments

IC OPAMP CFA 3 CIRCUIT 16SOIC

0

OPA2350UAG4

OPA2350UAG4

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

0

INA281A5IDBVT

INA281A5IDBVT

Texas Instruments

-4 TO 100-V, 1-MHZCURRENT

250

OPA37GPG4

OPA37GPG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8DIP

0

OPA330AIDBVRG4

OPA330AIDBVRG4

Texas Instruments

IC OPAMP ZER-DRIFT 1CIRC SOT23-5

0

OPA211AIDG4

OPA211AIDG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

0

INA214AIDCKTG4

INA214AIDCKTG4

Texas Instruments

IC CURR SENSE 1 CIRCUIT SC70-6

0

TS321IDBVRG4

TS321IDBVRG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT SOT23-5

0

LMV931MF-TI

LMV931MF-TI

Texas Instruments

IC GP OPAMP 1 CIRCUIT SOT23-5

76000

TLC25L4BCD

TLC25L4BCD

Texas Instruments

TLC25L4B LINCMOS QUAD OPERATIONA

13429

INA281B1IDBVT

INA281B1IDBVT

Texas Instruments

-4 TO 100-V, 1-MHZCURRENT

140

OPA842IDBVRG4

OPA842IDBVRG4

Texas Instruments

IC OPAMP VFB 1 CIRCUIT SOT23-5

0

TLC254BCD

TLC254BCD

Texas Instruments

TLC254B LINCMOS QUAD OPERATIONAL

4132

TLV2252AIDR

TLV2252AIDR

Texas Instruments

IC OPAMP GP 2 CIRCUIT 8SOIC

1635

LM324M/NOPB

LM324M/NOPB

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14SOIC

8149955

OPA364IDG4

OPA364IDG4

Texas Instruments

IC OPAMP GP 1 CIRCUIT 8SOIC

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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