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Texas Instruments LMC6482IMX
- Part No.:
- LMC6482IMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6482IMX.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,109
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Product details
Overview
LMC6482IMX from Texas Instruments is a dual-channel CMOS rail-to-rail input and output operational amplifier designed for precision signal conditioning in low-voltage, single-supply systems. It delivers 82 dB CMRR, ultra-low 20 fA input bias current, rail-to-rail output swing within 20 mV of supply rails (at 100 kΩ load), and specified operation from 3 V to 15 V. It is used in data acquisition front-ends where full-supply-range input handling and high DC accuracy are critical.
For engineers reviewing the LMC6482IMX datasheet, LMC6482IMX pinout, LMC6482IMX application, or LMC6482IMX equivalent, key selection criteria include its rail-to-rail common-mode range extending beyond supply rails, 0.7 mA per amplifier supply current at 5 V, 1.5 MHz gain-bandwidth product, 1.3 V/µs slew rate, and compatibility with 600 Ω loads - all validated across –40°C to +85°C.
Technical Context
The LMC6482IMX employs a complementary CMOS input stage enabling true rail-to-rail input common-mode voltage range (extending 300 mV beyond either supply rail) without phase inversion, unlike Bi-FET amplifiers. Its output stage sustains rail-to-rail swing down to 600 Ω loads while maintaining 82 dB CMRR and PSRR across 3–15 V supplies.
This architecture supports accurate buffering of wide-dynamic-range sensor signals in single-supply DAQ systems and enables direct interfacing with 12-bit ADCs like ADC12038 without input scaling. The device operates in both dual- and single-supply modes, with thermal performance characterized for SOIC-8 (RθJA = 128.9°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 15 V - supports battery-powered and industrial single-supply systems without level-shifting circuitry |
| Input Bias Current | 20 fA typical - enables high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive transducers) with negligible loading error |
| CMRR / PSRR | 82 dB - preserves 12-bit integral linearity (±0.325 LSB) in data acquisition when rejecting supply or common-mode noise |
| Output Swing | Within 20 mV of rails at 100 kΩ; 4.7 V high / 0.24 V low at 5 V/600 Ω - maximizes dynamic range in low-voltage signal chains |
| Gain-Bandwidth Product | 1.5 MHz - sufficient for anti-aliasing filters, sensor amplification, and medium-speed instrumentation loops |
| Slew Rate | 1.3 V/µs - supports clean 10 kHz sine-wave amplification with <0.01% THD at 8.5 VPP |
| Operating Temperature | –40°C to +85°C - qualified for industrial and transportation environments including train control and process analytics |
Pinout & Package
LMC6482IMX is packaged in an 8-pin SOIC (D package), with industry-standard pinout compatible with TLC272 and other dual op-amps. Thermal resistance is RθJA = 128.9°C/W, supporting reliable operation up to 85°C ambient in standard PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next stage; rail-to-rail swing enables full utilization of ADC reference range |
| 2 | −IN A | Inverting input for Amplifier A - accepts differential or inverting configurations; immune to phase inversion beyond supply rails |
| 3 | +IN A | Noninverting input for Amplifier A - high-impedance node (10 TΩ) suitable for direct connection to high-Z sensors |
| 4 | V− | Negative supply - referenced to ground in single-supply operation; supports dual-supply ±7.5 V configurations |
| 5 | +IN B | Noninverting input for Amplifier B - independent channel enables dual-sensor buffering or active filter sections |
| 6 | −IN B | Inverting input for Amplifier B - matched input characteristics to Channel A ensure consistent performance across both amplifiers |
| 7 | OUT B | Amplifier B output - electrically isolated from OUT A; supports dual-channel signal paths without crosstalk degradation (150 dB isolation) |
| 8 | V+ | Positive supply - accepts 3–15 V; internal regulation ensures stable biasing across supply variation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 300 mV beyond both supply rails - eliminates need for input biasing networks in single-supply sensor interfaces |
| Ultra-low input bias current | 20 fA typical - reduces voltage error to <1 µV on 100 MΩ source impedances, critical for electrochemical and medical sensors |
| Specified 600 Ω drive capability | Maintains rail-to-rail output swing into 600 Ω - enables direct driving of analog multiplexers or low-impedance cables without buffer stages |
| High CMRR and PSRR | 82 dB over temperature - rejects power supply ripple and common-mode interference in noisy industrial environments |
| Industry-standard pinout | SOIC-8 footprint matches TLC272/TLC277 - allows drop-in upgrade in legacy designs without PCB revision |
Applications
| Data Acquisition (DAQ) | Currency Counter |
|---|---|
Use Scenario: Buffering high-resolution ADC inputs (e.g., ADC12038) in portable or embedded DAQ systems operating from 3–5 V supplies. IC Role / Device Role / Timing Role: Precision unity-gain buffer providing rail-to-rail input handling and 82 dB CMRR to preserve 12-bit linearity. Use Value: Eliminates input signal scaling, increases effective dynamic range by >30%, and maintains ±0.325 LSB integral nonlinearity under supply ripple. |
Use Scenario: Signal conditioning for optical or magnetic currency validation sensors requiring low-noise, high-impedance amplification. IC Role / Device Role / Timing Role: Dual-channel transducer amplifier with independent channels for multi-spectral sensor pairs. Use Value: 20 fA input bias current prevents drift in high-value feedback networks; rail-to-rail output drives comparator thresholds directly. |
| Oscilloscope (DSO) | Multiparameter Patient Monitor |
Use Scenario: Front-end amplification in portable digital storage oscilloscopes with 12-bit ADCs and battery operation. IC Role / Device Role / Timing Role: Low-power, wide-common-mode-range amplifier for attenuator/programmable-gain stage interface. Use Value: 0.7 mA per amplifier enables >8-hour battery life; 1.5 MHz GBW supports 100 kHz analog bandwidth with <0.1 dB gain flatness. |
Use Scenario: Analog front-end for simultaneous ECG, SpO₂, and temperature sensing in compact patient monitors. IC Role / Device Role / Timing Role: Dual-channel instrumentation-grade amplifier for biopotential and transducer signal paths. Use Value: 82 dB CMRR rejects 50/60 Hz mains interference; rail-to-rail swing maximizes SNR when interfacing with low-voltage ADC references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC272CDR | Higher 1 pA input bias current, limited input common-mode range (V− to V+ − 1.5 V), no rail-to-rail output | Lower cost but requires input biasing and cannot support full-supply-range signals | Select only if legacy design reuse is mandatory and input signal range is constrained to mid-supply |
| OPA2314AIDR | Lower 0.2 pA input bias current, 3 MHz GBW, 1.8 V minimum supply, but 500 µA per amplifier supply current | Better high-frequency performance and lower voltage operation, but higher quiescent power | Prefer for battery-constrained, higher-speed applications where 1.5 MHz GBW is insufficient |
Compared with TLC272CDR, LMC6482IMX enables true rail-to-rail signal capture without redesign; versus OPA2314AIDR, it trades 1.5× higher GBW for 70% lower supply current - making it optimal for precision, low-power, wide-input-range industrial DAQ.
Availability
LMC6482IMX is available at Aetrix Electronics and suitable for data acquisition, medical instrumentation, and industrial process analytics requiring stable component supply and long-term manufacturability.
Supply support for LMC6482IMX 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 is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amps and signal-chain solutions.
The LMC6482IMX belongs to TI's LMC648x rail-to-rail CMOS op-amp family, engineered for high-accuracy, low-power signal conditioning in single-supply industrial, medical, and test equipment.
FAQ
What is the maximum load drive capability of the LMC6482IMX?
The LMC6482IMX maintains rail-to-rail output swing into 600 Ω loads at 5 V supply (4.24 V high / 0.65 V low over temperature). It delivers ±30 mA short-circuit current and supports continuous sourcing/sinking up to ±20 mA at 5 V, enabling direct interface with analog switches, low-Z cables, and multiplexers without external buffers.
Does the LMC6482IMX support single-supply operation?
Yes, the LMC6482IMX is fully specified for single-supply operation from 3 V to 15 V. Its rail-to-rail input extends 300 mV beyond both supply rails, and its output swings within 20 mV of each rail under light loads - making it ideal for 3.3 V or 5 V microcontroller-based systems without negative supplies.
How does the LMC6482IMX compare to TLC272 in terms of upgrade path?
The LMC6482IMX uses the same SOIC-8 pinout as TLC272 and serves as a direct functional upgrade. It improves input bias current from 1 pA to 20 fA, extends input common-mode range to rail-to-rail, adds rail-to-rail output, and raises CMRR from ~60 dB to 82 dB - all while maintaining compatibility with existing PCB layouts.
What is the input offset voltage specification for LMC6482IMX over temperature?
For the LMC6482IMX, input offset voltage is ±1.35 mV maximum over –40°C to +85°C at 5 V supply. At 3 V supply, it is ±2.7 mV max. Input offset drift is ±1 µV/°C (5 V) or ±2 µV/°C (3 V), ensuring stable DC accuracy in thermally varying environments like process analyzers or train control units.
Is the LMC6482IMX suitable for medical-grade patient monitoring?
Yes, the LMC6482IMX is used in multiparameter patient monitors due to its 82 dB CMRR (rejecting 50/60 Hz interference), rail-to-rail input for biopotential signal fidelity, 20 fA input bias current (minimizing electrode polarization error), and –40°C to +85°C qualification - meeting core analog front-end requirements for ECG, SpO₂, and temperature sensing.
LMC6482IMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.3V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.02 pA
- Voltage - Input Offset:
- 110 µV
- Current - Supply:
- 1.3mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 15.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMC6482IMX FAQ
1.How can I place an order for LMC6482IMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6482IMX 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 LMC6482IMX reliable?
The price and inventory of LMC6482IMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6482IMX is usually 5 days.
3.What payment methods are accepted for LMC6482IMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6482IMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6482IMX?
LMC6482IMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6482IMX 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 LMC6482IMX?
For technical support, including LMC6482IMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6482IMX requirements.
6.How does Aetrix verify that LMC6482IMX is sourced from the original manufacturer or authorized distributors?
All LMC6482IMX 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 LMC6482IMX meets industry standards.
7.What is the process for return or replacement of LMC6482IMX?
All LMC6482IMX units undergo pre-shipment inspection (PSI). If there is an issue with LMC6482IMX, 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 LMC6482IMX part is unused and in its original packaging.
Return procedure for LMC6482IMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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