Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ADA4807-2ACPZ-R7

ADA4807-2ACPZ-R7

Analog Devices, Inc.

IC OPAMP VFB 2 CIRCUIT 10LFCSP

2069

LT1999HS8-20#PBF

LT1999HS8-20#PBF

Analog Devices, Inc.

IC CURR SENSE 1 CIRCUIT 8SO

290

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

LMR342FVT-GE2

LMR342FVT-GE2

ROHM Semiconductor

IC OPAMP GP 2 CIRCUIT 8TSSOP

2980

ALD4704APBL

ALD4704APBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

0

THS4500IDGK

THS4500IDGK

Texas Instruments

THS4500 15V, HIGH-SPEED FULLY D

29602

LT1789IS8-10#TRPBF

LT1789IS8-10#TRPBF

Analog Devices, Inc.

IC INST AMP 1 CIRCUIT 8SO

0

MAX4091ASA+

MAX4091ASA+

Maxim Integrated

IC OPAMP GP 1 CIRCUIT 8SOIC

36625700

HA7-5101-5

HA7-5101-5

OPERATIONAL AMPLIFIER

1039

LMV344IPWR

LMV344IPWR

Texas Instruments

IC OPAMP GP 4 CIRCUIT 14TSSOP

292

SSM2135S

SSM2135S

Analog Devices, Inc.

IC AUDIO 1 CIRCUIT 8SOIC

85521

LT1206CR#TRPBF

LT1206CR#TRPBF

Analog Devices, Inc.

IC OPAMP CFA 1 CIRCUIT DDPAK-7

142

TLV2762CDR

TLV2762CDR

Texas Instruments

TLV2762 DUAL 1.8-V, MICRO-POWER,

7500

LTC6259ITS8#TRPBF

LTC6259ITS8#TRPBF

Analog Devices, Inc.

IC OPAMP GP 2 CIRCUIT TSOT23-8

0

PGA113AIDGSTG4

PGA113AIDGSTG4

Texas Instruments

IC OPAMP PGA 1 CIRCUIT 10VSSOP

0

LMV794MM

LMV794MM

IC CMOS 2 CIRCUIT 8VSSOP

717

MCP6021T-I/SN

MCP6021T-I/SN

Roving Networks / Microchip Technology

IC OPAMP GP 1 CIRCUIT 8SOIC

0

NJM2059D

NJM2059D

New Japan Radio (NJR)

IC OPAMP GP 4 CIRCUIT 14DIP

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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