Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments LMC6492AEM/NOPB

Name: LMC6492AEM/NOPB
Brand: Texas Instruments
SKU: LMC6492AEM/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: LMC6492AEM/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: LMC6492AEM/NOPB.pdf

Description:: IC CMOS 2 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:278

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

LMC6492AEM/NOPB from Texas Instruments (formerly National Semiconductor) is a dual CMOS rail-to-rail input and output operational amplifier designed for single-supply automotive sensor signal conditioning. It operates from 5V to 15V, delivers rail-to-rail output swing within 20 mV of supply rails at 100 kΩ load, features 150 fA input bias current and 120 dB open-loop gain, and supports −40°C to +125°C junction temperature range - enabling high-accuracy transducer amplification in engine control units.

For engineers reviewing the LMC6492AEM/NOPB datasheet, LMC6492AEM/NOPB pinout, LMC6492AEM/NOPB application, or LMC6492AEM/NOPB equivalent, key selection criteria include ultra-low input current for high-impedance sensor interfacing, guaranteed rail-to-rail common-mode input beyond supply rails, wide temperature operation, and low offset voltage drift of 1.0 µV/°C in automotive-grade packaging.

Technical Context

The LMC6492AEM/NOPB employs a proprietary CMOS input stage enabling true rail-to-rail input common-mode voltage range - extending 0.3 V beyond both supply rails - eliminating phase inversion and non-linear errors when sensing signals near or outside supply boundaries. Its output stage delivers rail-to-rail swing with sourcing/sinking capability up to ±30 mA and output impedance of ~110 Ω (sourcing) / ~80 Ω (sinking) at 5 V.

It achieves 82 dB CMRR and PSRR across 0 V to 15 V common-mode range, supports stable operation with capacitive loads via external series resistance, and maintains 1.3 V/µs slew rate and 1.5 MHz gain-bandwidth product at 15 V supply - optimized for precision DC and low-frequency AC signal conditioning in harsh environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.5 V to 15.5 V - enables direct use in 5 V, 12 V, and 15 V automotive systems without level-shifting.
Input Bias Current	150 fA typical - preserves signal integrity when interfacing with high-impedance sensors (e.g., piezoresistive pressure elements).
Input Offset Voltage	0.11 mV typical (LMC6492AE grade) - minimizes DC error in precision differential amplifiers and instrumentation circuits.
CMRR	82 dB minimum (0 V ≤ V_CM ≤ 15 V) - ensures accurate non-inverting gain accuracy despite supply noise or ground bounce.
Output Swing	Within 20 mV of rails at 100 kΩ load - maximizes dynamic range in 5 V ADC front-ends and single-supply data acquisition.
Offset Drift	1.0 µV/°C - maintains calibration stability over full −40°C to +125°C operating range in under-hood applications.
Slew Rate	1.3 V/µs typical - supports clean step response for pressure/temperature transducer outputs up to ~10 kHz bandwidth.
Gain-Bandwidth	1.5 MHz at V_S = 15 V - sufficient for closed-loop gains up to ~150 in anti-aliasing filters and sensor interface stages.

Pinout & Package

LMC6492AEM/NOPB is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package (NS Package Number M08A), 3.9 mm × 4.9 mm body, 1.27 mm pitch, with exposed pad not present. Pinout conforms to standard dual op-amp configuration.

Pin/Terminal	Circuit Role	Design Meaning
1	Output A	Amplifier A output - drives downstream circuitry with rail-to-rail swing and 30 mA sourcing/sinking capability.
2	Inverting Input A	High-impedance (≥10 TΩ) negative input node - accepts feedback networks and sensor return paths without loading error.
3	Non-Inverting Input A	Rail-to-rail common-mode input - accepts signals from −0.3 V to V+ + 0.3 V, enabling direct connection to grounded sensors.
4	V− (GND)	Negative supply terminal - referenced to system ground in single-supply operation; supports split-supply down to −10 V.
5	Non-Inverting Input B	Independent high-Z input for second channel - allows dual-sensor monitoring (e.g., pressure + temperature) on one die.
6	Inverting Input B	Second amplifier's feedback node - supports independent gain setting per channel without crosstalk (150 dB isolation).
7	Output B	Amplifier B output - electrically isolated from Output A; shares same supply rails and thermal environment.
8	V+	Positive supply input - accepts 5 V to 15.5 V; internal regulation ensures stable biasing across voltage and temperature.

Key Features

Feature	Design Value
Rail-to-rail input beyond supply rails	Accepts V_IN from (V− − 0.3 V) to (V+ + 0.3 V) - eliminates need for external level-shifting in grounded sensor interfaces.
Ultra-low input current (150 fA)	Enables use of >10 MΩ feedback resistors without significant offset error - critical for photodiode and high-Z bridge sensor amplifiers.
Guaranteed −40°C to +125°C operation	Qualified per automotive temperature grade (AEC-Q100 not stated, but specified for extended industrial/auto range) - suitable for engine bay deployment.
120 dB open-loop gain	Ensures <0.01% gain error at G = 100 with 100 kΩ load - supports high-precision closed-loop configurations without trimming.
82 dB CMRR over full input range	Maintains accuracy in noisy automotive grounds where common-mode interference exceeds 1 V peak-to-peak.
Low 500 µA/amplifier supply current	Reduces thermal load and power supply burden in multi-channel sensor modules with tight power budgets.

Applications

Automotive Pressure Sensing	Oxygen Sensor Signal Conditioning
Use Scenario: Amplifying millivolt-level differential output from manifold absolute pressure (MAP) sensors in engine control units. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end - Channel A conditions bridge output, Channel B buffers reference or compensates temperature drift. Use Value: Rail-to-rail input accommodates sensor offset near ground; 150 fA bias current prevents bridge imbalance error; 120 dB gain ensures <0.1% linearity over 100 kPa range.	Use Scenario: Buffering and amplifying Nernst cell voltage (0.1–1.0 V) from zirconia-based oxygen sensors in exhaust systems. IC Role / Device Role / Timing Role: High-input-impedance unity-gain buffer followed by programmable gain stage - isolates fragile electrochemical cell from ECU loading. Use Value: Input common-mode range extending below ground allows direct connection to biased Nernst cell; 1.0 µV/°C drift maintains stoichiometric air-fuel ratio accuracy across thermal cycles.
Engine Coolant Temperature Monitoring	Wheel Speed Sensor Interface
Use Scenario: Linearizing and amplifying resistance-to-voltage conversion from NTC thermistors mounted in coolant passages. IC Role / Device Role / Timing Role: Precision transimpedance amplifier - converts thermistor current into calibrated voltage for ADC sampling. Use Value: Ultra-low input current avoids self-heating error in high-resistance thermistor legs (>10 kΩ at 25°C); rail-to-rail output fully utilizes 5 V ADC reference.	Use Scenario: Conditioning analog sine-wave output from variable-reluctance wheel speed sensors before Schmitt-trigger digitization. IC Role / Device Role / Timing Role: Low-noise, high-CMRR differential amplifier - rejects common-mode noise induced by ignition pulses and alternator ripple. Use Value: 82 dB CMRR suppresses >1 Vpp common-mode interference at 1–15 kHz; 1.3 V/µs slew rate preserves zero-crossing fidelity for ABS timing accuracy.

Automotive Pressure Sensing

Oxygen Sensor Signal Conditioning

Use Scenario: Amplifying millivolt-level differential output from manifold absolute pressure (MAP) sensors in engine control units.

IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end - Channel A conditions bridge output, Channel B buffers reference or compensates temperature drift.

Use Value: Rail-to-rail input accommodates sensor offset near ground; 150 fA bias current prevents bridge imbalance error; 120 dB gain ensures <0.1% linearity over 100 kPa range.

Use Scenario: Buffering and amplifying Nernst cell voltage (0.1–1.0 V) from zirconia-based oxygen sensors in exhaust systems.

IC Role / Device Role / Timing Role: High-input-impedance unity-gain buffer followed by programmable gain stage - isolates fragile electrochemical cell from ECU loading.

Use Value: Input common-mode range extending below ground allows direct connection to biased Nernst cell; 1.0 µV/°C drift maintains stoichiometric air-fuel ratio accuracy across thermal cycles.

Engine Coolant Temperature Monitoring

Wheel Speed Sensor Interface

Use Scenario: Linearizing and amplifying resistance-to-voltage conversion from NTC thermistors mounted in coolant passages.

IC Role / Device Role / Timing Role: Precision transimpedance amplifier - converts thermistor current into calibrated voltage for ADC sampling.

Use Value: Ultra-low input current avoids self-heating error in high-resistance thermistor legs (>10 kΩ at 25°C); rail-to-rail output fully utilizes 5 V ADC reference.

Use Scenario: Conditioning analog sine-wave output from variable-reluctance wheel speed sensors before Schmitt-trigger digitization.

IC Role / Device Role / Timing Role: Low-noise, high-CMRR differential amplifier - rejects common-mode noise induced by ignition pulses and alternator ripple.

Use Value: 82 dB CMRR suppresses >1 Vpp common-mode interference at 1–15 kHz; 1.3 V/µs slew rate preserves zero-crossing fidelity for ABS timing accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC2272CDR	Higher input bias current (1 pA), lower CMRR (70 dB), wider supply range (2.2–16 V), but no guaranteed rail-to-rail input beyond rails.	Limited suitability for sensors requiring sub-ground input swing; less accurate in high-noise engine bay environments.	Prefer LMC6492AEM/NOPB when input signals exceed supply rails or CMRR >80 dB is required.
OPA2333AIDR	Zero-drift architecture, lower offset (2 µV), higher quiescent current (17 µA/channel), narrower temp range (−40°C to +125°C same), but no beyond-rail input capability.	Better DC precision for calibration-critical systems, but cannot replace LMC6492AEM/NOPB in circuits relying on input overvoltage tolerance.	Select LMC6492AEM/NOPB for robustness against sensor overvoltage and rail-exceeding common-mode; choose OPA2333AIDR only if microvolt-level offset dominates design.

Compared with TLC2272CDR and OPA2333AIDR, the LMC6492AEM/NOPB uniquely combines guaranteed beyond-rail input operation, 150 fA bias current, and 82 dB CMRR across full voltage range - making it irreplaceable in automotive transducer interfaces where signal integrity at supply boundaries is non-negotiable.

Availability

LMC6492AEM/NOPB is available at Aetrix Electronics and suitable for automotive pressure sensing, oxygen sensor conditioning, and engine temperature monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMC6492AEM/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments acquired National Semiconductor in 2011 and maintains its precision analog portfolio, including legacy high-reliability op-amps. TI is a global leader in analog and embedded processing semiconductors.

The LMC6492AEM/NOPB belongs to National Semiconductor's LMC64xx family of rail-to-rail CMOS op-amps, engineered specifically for single-supply automotive and industrial sensor signal conditioning where input overvoltage tolerance and ultra-low bias current are mandatory.

FAQ

What is the maximum input voltage range supported by the LMC6492AEM/NOPB?

The LMC6492AEM/NOPB supports an input common-mode voltage range from (V− − 0.3 V) to (V+ + 0.3 V) at room temperature, with guaranteed operation from −0.25 V to V+ + 0.25 V over temperature. This allows direct interfacing with grounded sensors and eliminates phase inversion even when inputs exceed supply rails - a key differentiator versus standard rail-to-rail op-amps. Absolute maximum rating is ±0.3 V beyond rails; exceeding this requires external current limiting per Figure 3 in the datasheet.

Does the LMC6492AEM/NOPB support single-supply operation at 3.3 V?

No - the LMC6492AEM/NOPB has a minimum supply voltage of 2.5 V but is not characterized or guaranteed for rail-to-rail performance at 3.3 V. Its DC specifications (e.g., output swing, CMRR, input bias current) are validated at V_S = 5 V and 15 V, and the datasheet specifies guaranteed operation from 5 V to 15.5 V. For 3.3 V systems, TI recommends alternatives such as the TLV2462 or OPA2316, which are fully specified at 3.3 V.

What is the thermal resistance (θ_JA) of the LMC6492AEM/NOPB in its SOIC package?

The LMC6492AEM/NOPB in the 8-pin SOIC package (M08A) has a thermal resistance θ_JA of 171°C/W, as specified in the Absolute Maximum Ratings table. This value assumes standard JEDEC 2-layer board conditions. Layout practices - including copper pour under the package and thermal vias - can reduce effective θ_JA; however, the device's 500 µA/amplifier quiescent current limits self-heating, making thermal derating rarely necessary in typical automotive sensor applications.

Can the LMC6492AEM/NOPB drive a 600 Ω load rail-to-rail?

The LMC6492AEM/NOPB can drive a 600 Ω load but does not achieve full rail-to-rail swing under that condition. At V_S = 5 V, output swing is guaranteed to be ≥4.24 V (high) and ≤0.65 V (low) - i.e., within ~0.76 V of each rail. To maintain <20 mV rail margin, a minimum load of 2 kΩ is required. For 600 Ω applications, verify output compliance in simulation or test using the sourcing/sinking current vs. output voltage curves (Figures 01204927–01204932).

Is the LMC6492AEM/NOPB qualified to AEC-Q100 for automotive use?

The LMC6492AEM/NOPB is not explicitly AEC-Q100 qualified per its datasheet, but it is specified and tested for −40°C to +125°C junction temperature operation - matching the Grade 0 temperature requirement of AEC-Q100. It carries automotive-grade part numbering ('A' suffix denotes extended temperature), and TI provides automotive-grade support documentation. Customers requiring formal AEC-Q100 certification should consult TI's Automotive Qualification Report or consider the pin-compatible LMC6492QML-SP (space-grade) or newer automotive-qualified alternatives like the OPA2991-Q1.

LMC6492AEM/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Amplifier Type:: CMOS

Number of Circuits:: 2

Output Type:: Differential, Rail-to-Rail

Slew Rate:: 1.3V/µs

Gain Bandwidth Product:: 1.5 MHz

-3db Bandwidth:: -

Current - Input Bias:: 0.15 pA

Voltage - Input Offset:: 110 µV

Current - Supply:: 1.3mA (x2 Channels)

Current - Output / Channel:: 30 mA

Voltage - Supply Span (Min):: 2.5 V

Voltage - Supply Span (Max):: 15.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

LMC6492AEM/NOPB FAQ

1.How can I place an order for LMC6492AEM/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LMC6492AEM/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LMC6492AEM/NOPB reliable?

The price and inventory of LMC6492AEM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6492AEM/NOPB is usually 5 days.

3.What payment methods are accepted for LMC6492AEM/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6492AEM/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMC6492AEM/NOPB?

LMC6492AEM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMC6492AEM/NOPB order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LMC6492AEM/NOPB?

For technical support, including LMC6492AEM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6492AEM/NOPB requirements.

6.How does Aetrix verify that LMC6492AEM/NOPB is sourced from the original manufacturer or authorized distributors?

All LMC6492AEM/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMC6492AEM/NOPB meets industry standards.

7.What is the process for return or replacement of LMC6492AEM/NOPB?

All LMC6492AEM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6492AEM/NOPB, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LMC6492AEM/NOPB part is unused and in its original packaging.

Return procedure for LMC6492AEM/NOPB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…