Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
BGU6005115

BGU6005115

NXP Semiconductors

LOW NOISE AMPLIFIER MMIC

30000

BGU7005/Z/N2115

BGU7005/Z/N2115

NXP Semiconductors

NARROW BAND LOW POWER AMPLIFIER

0

CGY1041/01112

CGY1041/01112

NXP Semiconductors

HIGH POWER AMPLIFIER

100

TEA6850HN/V102518

TEA6850HN/V102518

NXP Semiconductors

IF FILTER, AMPLIFIER, DEMODULATO

11950

CGD985LC112

CGD985LC112

NXP Semiconductors

NARROW BAND HIGH POWER AMPLIFIER

100

SE5234N/01,112

SE5234N/01,112

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14DIP

0

SA5212AD/01,112

SA5212AD/01,112

NXP Semiconductors

IC OPAMP TRANSIMP 1 CIRCUIT 8SO

0

NE5234D/01,518

NE5234D/01,518

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14SO

0

SA5234D/01,512

SA5234D/01,512

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14SO

0

SA5211D/01,118

SA5211D/01,118

NXP Semiconductors

IC OPAMP TRANSIMP 1 CIRCUIT 14SO

0

NE5234D,518

NE5234D,518

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14SO

0

SA5234D,518

SA5234D,518

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14SO

0

SA5211D/01,112

SA5211D/01,112

NXP Semiconductors

IC OPAMP TRANSIMP 1 CIRCUIT 14SO

0

SA5232D/01,118

SA5232D/01,118

NXP Semiconductors

IC OPAMP GP 2 CIRCUIT 8SO

0

NE5234D/01,512

NE5234D/01,512

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14SO

0

SA5209D,602

SA5209D,602

NXP Semiconductors

IC OPAMP VGA 1 CIRCUIT 16SO

0

SE5234N,112

SE5234N,112

NXP Semiconductors

IC OPAMP GP 4 CIRCUIT 14DIP

0

SA5212AD/01,118

SA5212AD/01,118

NXP Semiconductors

IC OPAMP TRANSIMP 1 CIRCUIT 8SO

0

NE5232N/01,112

NE5232N/01,112

NXP Semiconductors

IC OPAMP GP 2 CIRCUIT 8DIP

0

TDA9901TS/C3,118

TDA9901TS/C3,118

NXP Semiconductors

IC OPAMP VGA 1 CIRCUIT 20SSOP

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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