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Texas Instruments LMC6041AIM/NOPB
- Part No.:
- LMC6041AIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6041AIM/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,433
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Product details
Overview
LMC6041AIM/NOPB from Texas Instruments is a single-channel, micropower CMOS operational amplifier optimized for ultra-low-input-current and rail-to-rail output applications. It delivers 2 fA typical input bias current, 10 µA/amp supply current, and operates from 4.5 V to 15 V single supply - enabling precision signal conditioning in battery-powered pH probes and photodiode preamplifiers.
For engineers reviewing the LMC6041AIM/NOPB datasheet, LMC6041AIM/NOPB pinout, LMC6041AIM/NOPB application, or LMC6041AIM/NOPB equivalent, key selection criteria include verified rail-to-rail output swing at 25 kΩ load, input common-mode range extending to ground, and confirmed 75 kHz gain-bandwidth product under 5 V operation.
Technical Context
The LMC6041AIM/NOPB employs TI's double-poly silicon-gate CMOS process to achieve ultra-low input leakage while maintaining stability across capacitive loads up to 1 nF when compensated with external components. Its architecture supports single-supply operation with input voltage range including ground and output swing within 30 mV of both rails at 100 kΩ load.
It features internal compensation optimized for low-power instrumentation topologies, including two-op-amp instrumentation amplifiers with <20 µA total quiescent current and high-impedance sample-and-hold circuits using polypropylene hold capacitors - all without requiring external pulldown resistors for ground-referenced outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 14–20 µA at 5 V (enables >1-year battery life in portable analyzers) |
| Input Bias Current | 2 fA typical (supports picoamp-level photodiode and piezoelectric charge amplification) |
| Gain Bandwidth | 75 kHz (sufficient for DC–10 kHz sensor signal conditioning with stable phase margin) |
| Output Swing | Within 13 mV of rails at 5 V/100 kΩ (enables full dynamic range utilization in single-supply systems) |
| Input Common-Mode Range | Includes ground to (V+) – 2.3 V (allows direct interfacing with grounded transducers and pH electrodes) |
| CMRR | 68–75 dB (maintains accuracy in noisy industrial environments with common-mode interference) |
| Quiescent Supply Voltage | 4.5 V to 15 V single supply (compatible with standard Li-ion, alkaline, and regulated 5 V/12 V rails) |
Pinout & Package
LMC6041AIM/NOPB is packaged in an 8-pin SOIC (D package) with industry-standard pinout and thermal characteristics suitable for surface-mount assembly on compact PCBs. The device uses a non-inverting configuration by default and requires no external biasing for ground-referenced inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connection | Must remain unconnected or floating; not internally bonded |
| 2 | Inverting input (–IN) | Primary feedback node; accepts differential or inverting configurations |
| 3 | Noninverting input (+IN) | High-impedance sensing node; compatible with guarded PCB traces |
| 4 | Negative supply (V–) | Ground reference in single-supply mode; connects to system GND |
| 6 | Output (OUT) | Rail-to-rail capable; drives 100 kΩ loads to within 13 mV of supply rails |
| 7 | Positive supply (V+) | Accepts 4.5–15 V; powers internal CMOS circuitry and output stage |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale output at 100 kΩ load without external pull-down resistors |
| Ultra-low input bias current | 2 fA typical enables accurate integration and charge amplification over decades |
| Single-supply operation | Operates from 4.5 V to 15 V with input common-mode range including ground |
| High input impedance | >10 TΩ resistance supports high-Z sensor interfaces without signal attenuation |
| Stable with capacitive loads | Compensated for ≥1 nF loads using simple RC networks per TI application guidance |
Applications
| Battery-Powered pH Probe Buffer | Photodiode Pre-Amplifier |
|---|---|
|
Use Scenario: Signal buffering for glass-electrode pH sensors in handheld water quality meters. IC Role / Device Role / Timing Role: High-impedance voltage follower isolating microamp-level electrode current from ADC input. Use Value: 2 fA input bias prevents drift and offset accumulation during long-term measurements; rail-to-rail output maximizes ADC resolution. |
Use Scenario: Transimpedance amplification of weak photocurrents from infrared detectors in gas analyzers. IC Role / Device Role / Timing Role: Low-noise, low-leakage transimpedance amplifier converting pA-level current to measurable voltage. Use Value: Input bias current below 2 fA avoids signal corruption; 83 nV/√Hz noise preserves SNR in low-light conditions. |
| Piezoelectric Charge Amplifier | Fire/Smoke Detector Signal Conditioning |
|
Use Scenario: Integrating charge output from accelerometers and impact sensors in structural health monitoring. IC Role / Device Role / Timing Role: Precision integrator with guarded input and ultra-low leakage for charge-to-voltage conversion. Use Value: Confirmed 1.3 µV/°C offset drift ensures stable baseline over temperature; high CMRR rejects EMI in industrial settings. |
Use Scenario: Amplifying low-level ionization chamber currents in residential smoke alarms. IC Role / Device Role / Timing Role: Micropower front-end amplifier enabling multi-year battery operation with sub-pA sensitivity. Use Value: 10 µA supply current extends CR2032 battery life beyond 5 years; input includes ground for direct chamber biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6061IM/NOPB | Higher GBW (1.3 MHz), 10× higher supply current (100 µA), same 2 fA input bias | Better for AC-coupled sensor signals above 10 kHz; unsuitable for multi-year battery use | Select when bandwidth >100 kHz is required and power budget allows ≥100 µA |
| TLV2461CDR | 250 pA input bias (125× higher than LMC6041), 25 µA supply current, rail-to-rail I/O | Lower cost; acceptable for pH buffers where 250 pA leakage is tolerable | Choose for cost-sensitive designs where 250 pA input bias does not degrade measurement integrity |
Compared with LMC6041AIM/NOPB, LMC6061IM/NOPB trades ultra-low power for higher speed, while TLV2461CDR offers lower cost at the expense of 125× higher input leakage - making LMC6041AIM/NOPB uniquely suited for picoamp-level, battery-constrained instrumentation.
Availability
LMC6041AIM/NOPB is available at Aetrix Electronics and suitable for battery monitoring and power conditioning, photodiode preamplification, and portable analytic instruments requiring stable component supply and long-lifecycle support.
Supply support for LMC6041AIM/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 is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision analog ICs for industrial, medical, and portable applications.
The LMC604x family was designed specifically for ultra-low-power, high-impedance signal conditioning in battery-operated instrumentation - emphasizing micropower operation, rail-to-rail output, and sub-femtoamp input leakage.
FAQ
What is the maximum supply voltage for LMC6041AIM/NOPB?
The absolute maximum supply voltage for LMC6041AIM/NOPB is 16 V, but the recommended operating range is 4.5 V to 15 V for reliable performance. Operation at 15.5 V is specified in the datasheet for single-supply conditions, and exceeding 16 V risks permanent damage to the internal CMOS structure. LMC6041AIM/NOPB must never be operated beyond its absolute maximum ratings, even momentarily.
Does LMC6041AIM/NOPB support true rail-to-rail input?
LMC6041AIM/NOPB does not support rail-to-rail input - its input common-mode range extends to ground and up to (V+) – 2.3 V at room temperature. This means it accepts signals down to 0 V (ground) but cannot reliably process inputs within 2.3 V of the positive rail. However, its rail-to-rail output capability remains fully functional across the entire supply range.
Can LMC6041AIM/NOPB drive a 10 nF capacitive load directly?
No, LMC6041AIM/NOPB is not stable driving 10 nF directly. The datasheet confirms stable operation only up to ~1 nF with appropriate external compensation (e.g., series resistor + feedback capacitor). Driving 10 nF without compensation causes severe peaking or oscillation due to phase margin loss; TI recommends using a 10–100 Ω isolation resistor plus guard ring layout for such loads.
What is the typical input offset voltage for LMC6041AIM/NOPB?
The typical input offset voltage for LMC6041AIM/NOPB is ±1 mV at 25°C, with a maximum of ±3 mV for the AI grade. Over the full –40°C to +85°C temperature range, the maximum offset is ±3.3 mV. This low offset enables accurate DC-coupled amplification in pH probe buffers and transducer signal chains without frequent recalibration.
Is LMC6041AIM/NOPB pin-compatible with other LMC604x variants?
No, LMC6041AIM/NOPB is not pin-compatible with LMC6042 or LMC6044. It uses an 8-pin SOIC package with a unique pinout (e.g., pins 1/5/8 are NC), whereas LMC6042 shares the same 8-pin footprint but assigns active functions to those pins, and LMC6044 uses a 14-pin SOIC. PCB layout must be specific to the single-channel LMC6041AIM/NOPB.
LMC6041AIM/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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.02V/µs
- Gain Bandwidth Product:
- 75 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.002 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 18µA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4.5 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
LMC6041AIM/NOPB FAQ
1.How can I place an order for LMC6041AIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6041AIM/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 LMC6041AIM/NOPB reliable?
The price and inventory of LMC6041AIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6041AIM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6041AIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6041AIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6041AIM/NOPB?
LMC6041AIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6041AIM/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 LMC6041AIM/NOPB?
For technical support, including LMC6041AIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6041AIM/NOPB requirements.
6.How does Aetrix verify that LMC6041AIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6041AIM/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 LMC6041AIM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6041AIM/NOPB?
All LMC6041AIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6041AIM/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 LMC6041AIM/NOPB part is unused and in its original packaging.
Return procedure for LMC6041AIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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