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Texas Instruments LMC6082IM
- Part No.:
- LMC6082IM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6082IM.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,838
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Product details
Overview
LMC6082IM from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-offset, ultra-low-input-bias-current applications operating from 4.5 V to 15 V single supply. It delivers 150 μV typical input offset voltage, 10 fA typical input bias current, rail-to-rail output swing within 20 mV of supply rails (100 kΩ load), and 130 dB open-loop voltage gain - enabling high-accuracy signal conditioning in medical instrumentation, photodiode preamplifiers, and transducer interfaces.
For engineers reviewing the LMC6082IM datasheet, LMC6082IM pinout, LMC6082IM application, or LMC6082IM equivalent, key selection considerations include its guaranteed −40°C to +85°C operating junction temperature range, SOIC-8 package with 193°C/W thermal resistance, input common-mode range extending to V−, and compatibility with single-supply precision topologies such as instrumentation amplifiers and charge amplifiers.
Technical Context
The LMC6082IM uses TI's Double-Poly Silicon-Gate CMOS process to achieve ultra-low input bias current (10 fA typ.) while maintaining high DC precision and rail-to-rail output drive. Its internal integrator-based output stage-without a conventional push-pull buffer-enables both low output impedance and large signal voltage gain (≥300 V/mV at 2 kΩ load).
This architecture supports stable operation with capacitive loads when paired with external compensation (e.g., pull-up resistor or feedback capacitor), and provides improved latchup immunity versus standard CMOS op-amps. Input common-mode voltage includes ground, and PSRR exceeds 75 dB across ±7.5 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 150 μV typical - enables sub-mV error in precision DC-coupled gain stages |
| Input Bias Current | 10 fA typical - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiodes, piezoelectrics) |
| Supply Voltage Range | 4.5 V to 15 V single supply - supports battery-powered and industrial 12 V systems without split rails |
| Output Swing | Within 20 mV of V+ and V− (100 kΩ load) - maximizes dynamic range in low-voltage data acquisition |
| Open-Loop Gain | 130 dB typical - ensures <0.01% gain error in closed-loop configurations up to G = 100 |
| Slew Rate | 1.5 V/μs typical - supports >10 kHz small-signal bandwidth in unity-gain follower applications |
| Input Common-Mode Range | Includes V− (down to −0.1 V at V+ = 5 V) - allows direct sensing of signals referenced to ground in single-supply systems |
Pinout & Package
LMC6082IM is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012 variation AA, with 1.27 mm lead pitch, 3.91 mm body width, and 1.75 mm max height. Thermal resistance θJA = 193°C/W (PCB-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node for feedback network connection; requires guarding in >1012 Ω applications |
| 2 | Non-Inverting Input (Amplifier A) | Reference point for differential input; common-mode range extends to V− |
| 3 | Output (Amplifier A) | Rail-to-rail capable; drives ≥100 kΩ load to within 20 mV of supply rails |
| 4 | V− (Ground / Negative Supply) | Return path for both amplifiers; input common-mode includes this pin |
| 5 | Non-Inverting Input (Amplifier B) | Independent high-Z input; electrically isolated from Amplifier A inputs |
| 6 | Inverting Input (Amplifier B) | Separate feedback node; no crosstalk coupling above 140 dB (amp-to-amp isolation) |
| 7 | Output (Amplifier B) | Full rail-to-rail swing; sinks/sourses ≥13 mA (V+ = 5 V) with defined min/max limits |
| 8 | V+ (Positive Supply) | Single-supply input; accepts 4.5–15 V; PSRR ≥75 dB over full range |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 10 fA typical - eliminates leakage-induced offset in picoamp-level photodiode and piezoelectric charge amplifiers |
| Rail-to-rail output swing | Within 20 mV of V+ and V− at 100 kΩ - preserves >99% of available signal swing in 3.3 V or 5 V systems |
| Input common-mode range including V− | Valid down to −0.1 V at V+ = 5 V - enables true ground-referenced sensing without level-shifting circuitry |
| High DC precision | 150 μV VOS, 1.0 μV/°C TCVOS - maintains accuracy across industrial temperature range without trimming |
| Improved latchup immunity | Withstands 100 mA surge on I/O pins - enhances robustness in noisy or transient-prone environments |
Applications
| Instrumentation Amplifier | Photodiode Preamplifier |
|---|---|
|
Use Scenario: High-impedance, low-drift front-end for hand-held pH meters and gas sensors using bridge or transducer elements. IC Role / Device Role / Timing Role: Dual-op-amp core implementing 3-op-amp instrumentation topology with >1014 Ω input resistance and 0.01% gain accuracy at G = 1000. Use Value: Enables battery-operated field instruments with <2.5 μV/°C offset drift and sub-100 fA input current - critical for nanovolt-level signal fidelity. |
Use Scenario: Low-noise transimpedance amplifier for silicon photodiodes in analytical spectrometers and IR detection systems. IC Role / Device Role / Timing Role: First-stage current-to-voltage converter with guarded input and compensated feedback to suppress input capacitance effects. Use Value: Achieves 22 nV/√Hz input voltage noise and 0.0002 pA/√Hz current noise - preserves SNR in weak-light measurement without cooling. |
| Transducer Amplifier | Charge Amplifier for Piezoelectrics |
|
Use Scenario: Signal conditioning for silicon pressure transducers and magnetic field sensors in automotive and industrial monitoring. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with matched dual channels for ratiometric bridge excitation and differential output buffering. Use Value: Delivers 85 dB CMRR and 85 dB PSRR - rejects supply ripple and common-mode interference in unshielded mechanical environments. |
Use Scenario: High-gain, low-drift integration of charge output from accelerometers and ultrasonic transducers. IC Role / Device Role / Timing Role: Integrator stage using ultra-low IB (10 fA) to minimize drift and time-constant error in Q/V conversion. Use Value: Supports >100-second time constants with <0.1% error - essential for low-frequency vibration analysis and structural health monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6082IMX/NOPB | Same die, tape-and-reel packaging (2500 pcs/reel); identical electrical specs and SOIC-8 footprint | No functional difference; selected for automated SMT assembly vs. tube packaging | Preferred for volume production; same thermal and reliability performance as LMC6082IM |
| LMC6082AIM/NOPB | Enhanced temperature grade: −40°C to +85°C (same as LMC6082IM), but with tighter initial VOS limit (350 μV max vs. 800 μV max) | Better suited for calibrated test equipment requiring guaranteed low initial offset without trimming | Select when VOS ≤350 μV is mandatory at power-up; otherwise LMC6082IM meets standard industrial requirements |
Compared with LMC6082IM, LMC6082IMX/NOPB offers identical performance in optimized packaging for SMT lines, while LMC6082AIM/NOPB provides tighter factory-trimmed offset for metrology-grade applications - neither requires PCB redesign, but LMC6082AIM/NOPB incurs higher cost for enhanced DC specification assurance.
Availability
LMC6082IM is available at Aetrix Electronics and suitable for medical instrumentation, photodiode signal chains, and transducer amplifier designs requiring stable component supply across extended product lifecycles.
Supply support for LMC6082IM 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 heritage in precision op-amp design and manufacturing.
The LMC6082IM belongs to TI's LMC608x precision CMOS op-amp family, engineered specifically for ultra-low-input-bias-current, single-supply operation in sensor interface and instrumentation applications where leakage and offset critically impact accuracy.
FAQ
What is the maximum operating junction temperature for the LMC6082IM?
The LMC6082IM has a specified operating junction temperature range of −40°C to +85°C. This is confirmed in the "Operating Ratings" section of the official TI datasheet (SNOS630D, Rev. March 2013). The device must be thermally managed to ensure TJ does not exceed +85°C under worst-case ambient and power dissipation conditions, especially given its SOIC-8 package θJA of 193°C/W.
Does the LMC6082IM support true rail-to-rail input operation?
No, the LMC6082IM does not support rail-to-rail input. Its input common-mode voltage range includes V− (ground) but only extends to V+ − 2.3 V (typical) - meaning it cannot accept signals near the positive rail. However, it does provide rail-to-rail *output* swing, reaching within 20 mV of both V+ and V− under 100 kΩ load, as verified in the "DC Electrical Characteristics" table.
Can the LMC6082IM drive capacitive loads directly?
The LMC6082IM is not inherently stable with direct capacitive loading due to phase margin degradation caused by output impedance interacting with load capacitance. As documented in the "APPLICATIONS HINTS" section, stability with capacitive loads requires external compensation - such as a pull-up resistor to V+ or a feedback capacitor (Cf) - as shown in Figures 26 and 27 of the LMC6082IM datasheet.
What is the typical input voltage noise density of the LMC6082IM at 1 kHz?
The LMC6082IM exhibits a typical input-referred voltage noise density of 22 nV/√Hz at 1 kHz, as specified in the "AC Electrical Characteristics" table of the TI datasheet. This value remains stable across the industrial temperature range and supports low-noise signal conditioning in precision analog front-ends where thermal and flicker noise must be minimized.
Is the LMC6082IM RoHS compliant and lead-free?
Yes, the LMC6082IM/NOPB and LMC6082IMX/NOPB variants are RoHS compliant and lead-free, with "Green (RoHS & no Sb/Br)" eco plan designation per TI's PACKAGE OPTION ADDENDUM (10-Apr-2020). The "NOPB" suffix explicitly indicates lead-free finish, and the lead/ball finish is specified as SN (matte tin), meeting JEDEC J-STD-020 moisture sensitivity Level-1 standards.
LMC6082IM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 1.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.01 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 1.1mA (x2 Channels)
- Current - Output / Channel:
- 34 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 15.5 V
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMC6082IM FAQ
1.How can I place an order for LMC6082IM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6082IM 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 LMC6082IM reliable?
The price and inventory of LMC6082IM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6082IM is usually 5 days.
3.What payment methods are accepted for LMC6082IM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6082IM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6082IM?
LMC6082IM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6082IM 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 LMC6082IM?
For technical support, including LMC6082IM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6082IM requirements.
6.How does Aetrix verify that LMC6082IM is sourced from the original manufacturer or authorized distributors?
All LMC6082IM 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 LMC6082IM meets industry standards.
7.What is the process for return or replacement of LMC6082IM?
All LMC6082IM units undergo pre-shipment inspection (PSI). If there is an issue with LMC6082IM, 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 LMC6082IM part is unused and in its original packaging.
Return procedure for LMC6082IM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC6082IM Tags
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