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Texas Instruments LMC6041AIMX
- Part No.:
- LMC6041AIMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6041AIMX.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,051
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Product details
Overview
LMC6041AIMX from Texas Instruments is a single-channel, micropower CMOS operational amplifier optimized for ultra-low-input-current, single-supply battery-powered systems. It delivers 2 fA typical input bias current, 10 µA supply current per amplifier, rail-to-rail output swing (to within 12 mV of rails at 100 kΩ load), and operates from 4.5 V to 15 V single supply. It serves as a precision front-end buffer in pH-probe and photodiode signal conditioning.
For engineers reviewing the LMC6041AIMX datasheet, LMC6041AIMX pinout, LMC6041AIMX application, or LMC6041AIMX equivalent, key selection criteria include verified 2 fA input leakage, confirmed rail-to-rail output capability under 100 kΩ load, guaranteed operation across –40°C to +85°C, and SOIC-8 package compatibility with low-leakage PCB layout requirements.
Technical Context
The LMC6041AIMX uses TI's double-poly silicon-gate CMOS process to achieve ultra-low input current without compromising output drive or stability. Its input stage includes ground-referenced common-mode range and high-impedance (>10 TΩ) differential inputs, enabling direct interfacing with high-impedance transducers without external pulldown resistors.
Internal compensation ensures stable operation with capacitive loads up to 1 nF when using recommended external networks (e.g., pull-up resistor to V+ or feedback capacitor). The device exhibits 75 kHz gain-bandwidth product and 0.015 V/µs slew rate, supporting low-frequency precision amplification while maintaining micropower operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 14–20 µA at 5 V (typical quiescent draw enables >1-year battery life in coin-cell-powered sensors) |
| Input Bias Current | ±2 fA typical (enables accurate measurement of picoamp-level photocurrents without significant offset error) |
| Input Voltage Range | Includes ground (0 V) to (V+) – 2.3 V (supports direct sensing of 0–5 V sensor outputs with no level-shifting) |
| Output Swing | Rail-to-rail: 0.004–4.987 V at 5 V supply, 100 kΩ load (preserves full dynamic range in low-voltage data acquisition) |
| Gain-Bandwidth Product | 75 kHz (sufficient for DC–10 kHz instrumentation signals while maintaining <20 µA power budget) |
| Common-Mode Rejection | 68–75 dB (ensures stable DC gain in noisy industrial environments with varying ground potentials) |
| ESD Rating | ±500 V HBM (meets basic handling robustness for lab and field-deployable portable instruments) |
Pinout & Package
LMC6041AIMX is packaged in an 8-pin SOIC (D package), surface-mount outline with standard 1.27 mm pitch. Thermal resistance RθJA = 165 °C/W enables operation up to +85°C ambient without forced cooling in compact enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connection (NC) | Must remain unconnected; floating or tied to ground degrades input leakage performance |
| 2 | Inverting input (–IN) | High-impedance node requiring guard ring layout; sensitive to PCB contamination and humidity |
| 3 | Noninverting input (+IN) | Same impedance and layout rules as –IN; used for unity-gain buffers and reference followers |
| 4 | Negative supply (V–) | Connected to ground in single-supply operation; establishes reference for rail-to-rail output swing |
| 6 | Output (OUT) | Capable of sourcing/sinking ≥16 mA; supports direct driving of 100 kΩ loads with <12 mV headroom |
| 7 | Positive supply (V+) | Accepts 4.5–15 V; internal regulation ensures stable biasing across full supply range |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal fidelity down to 12 mV from either rail at 100 kΩ load-critical for maximizing ADC resolution in 5 V systems |
| Ultra-low input bias current | 2 fA typical enables accurate integration and amplification of charge from piezoelectric or photodiode sources without measurable drift |
| Ground-sensing input common-mode range | Accepts input voltages from 0 V to (V+) – 2.3 V-eliminates need for level-shifting circuitry in single-supply sensor interfaces |
| Single-supply operation | Operates from 4.5 V to 15 V with no dual-rail requirement-reduces BOM count and simplifies power architecture in portable devices |
| Insensitivity to latch-up | CMOS construction prevents destructive latch-up during overvoltage or ESD events-enhances reliability in unregulated battery systems |
Applications
| pH-Probe Signal Conditioning | Photodiode Pre-amplification |
|---|---|
Use Scenario: Amplifying high-impedance mV-level output from glass electrode pH probes in handheld analyzers. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating probe from ADC input while preserving DC accuracy. Use Value: 2 fA input bias prevents voltage error buildup across probe's >1 GΩ impedance, ensuring ±0.01 pH accuracy over hours of operation. |
Use Scenario: Converting nanoamp photocurrent from silicon photodiodes into measurable voltage in smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and low-noise feedback network. Use Value: Rail-to-rail output swing preserves full dynamic range for weak signals; 83 nV/√Hz input noise maintains SNR >60 dB at 1 Hz. |
| Piezoelectric Charge Amplifier | Portable Analytic Instrument Front-End |
Use Scenario: Integrating charge from impact-sensitive piezoelectric sensors in structural health monitoring nodes. IC Role / Device Role / Timing Role: Low-leakage integrator with reset switch and ultra-stable virtual ground. Use Value: Input leakage <4 pA over temperature ensures <0.1% drift in integrated charge over 10-second windows-critical for amplitude fidelity. |
Use Scenario: Signal conditioning for handheld gas chromatographs and electrochemical sensors powered by AA batteries. IC Role / Device Role / Timing Role: Micropower instrumentation amplifier channel in multi-sensor data acquisition ASIC companion. Use Value: 14 µA supply current per channel enables simultaneous operation of 4 analog channels on 2xAA for >6 months runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461IDBVR | Higher input bias current (1 pA typ), 175 µA supply current, 6.4 MHz GBW | Better AC performance but 17× higher power draw; unsuitable for multi-year battery life | Select only when bandwidth >100 kHz is required and power budget allows ≥150 µA per channel |
| LMP7721MA/NOPB | 0.3 fA input bias current, 1.3 mA supply current, 17 MHz GBW, 10 nV/√Hz noise | Superior leakage and noise specs but 65× higher quiescent current; requires thermal management | Choose for ultra-high-precision lab-grade instruments where battery life is secondary to sub-fA accuracy |
Compared with TLV2461IDBVR and LMP7721MA/NOPB, the LMC6041AIMX uniquely balances femtoamp input leakage, rail-to-rail output, and single-digit-microamp supply current-making it irreplaceable in long-life, high-impedance, low-voltage portable instrumentation where power and leakage are co-constrained.
Availability
LMC6041AIMX is available at Aetrix Electronics and suitable for pH-probe buffer amplifiers, photodiode preamplifiers, and piezoelectric charge amplifiers requiring stable component supply across extended production lifecycles.
Supply support for LMC6041AIMX 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 low-power signal chains.
The LMC604x family was designed specifically for ultra-low-power, high-impedance sensor interface applications-including portable medical, environmental, and industrial instrumentation-where femtoamp-level leakage and micropower operation are mandatory.
FAQ
What is the maximum operating temperature for LMC6041AIMX?
The LMC6041AIMX is rated for operation from –40°C to +85°C ambient temperature. Its SOIC-8 package has a junction-to-ambient thermal resistance of 165°C/W, so at 25°C ambient and 20 µA supply current, junction temperature remains well below the 110°C absolute maximum-ensuring reliable performance in sealed enclosures and outdoor deployments.
Does LMC6041AIMX support true rail-to-rail input?
No, the LMC6041AIMX does not support rail-to-rail input. Its input common-mode range extends from ground (0 V) to (V+) – 2.3 V at room temperature-covering the full lower rail but stopping short of the positive rail. This design enables robust operation with single-supply sensors while maintaining ultra-low input bias current.
Can LMC6041AIMX drive capacitive loads directly?
The LMC6041AIMX is not optimized for direct capacitive loading beyond ~100 pF. For loads >200 pF, TI recommends adding a pull-up resistor to V+ (≥10 µA current) or using isolation resistors with feedback capacitors-as detailed in Section 6.1.3 of the SNOS611F datasheet-to preserve phase margin and prevent oscillation.
What is the typical input offset voltage for LMC6041AIMX?
The LMC6041AIMX has a typical input offset voltage of ±1 mV (maximum ±3 mV) at 25°C. Over the full –40°C to +85°C range, the maximum offset is ±3.3 mV for the AI grade. This low drift (1.3 µV/°C) ensures stable DC gain in temperature-varying environments like portable field instruments.
Is LMC6041AIMX pin-compatible with other LMC604x variants?
No, the LMC6041AIMX (single-channel, 8-pin SOIC) is not pin-compatible with LMC6042 (dual) or LMC6044 (quad), which share the same pin count only in their 8-pin and 14-pin packages respectively-but assign different functions to pins 1, 5, and 8. Each variant requires its own dedicated PCB layout.
LMC6041AIMX 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:
- 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
LMC6041AIMX FAQ
1.How can I place an order for LMC6041AIMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6041AIMX 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 LMC6041AIMX reliable?
The price and inventory of LMC6041AIMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6041AIMX is usually 5 days.
3.What payment methods are accepted for LMC6041AIMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6041AIMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6041AIMX?
LMC6041AIMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6041AIMX 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 LMC6041AIMX?
For technical support, including LMC6041AIMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6041AIMX requirements.
6.How does Aetrix verify that LMC6041AIMX is sourced from the original manufacturer or authorized distributors?
All LMC6041AIMX 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 LMC6041AIMX meets industry standards.
7.What is the process for return or replacement of LMC6041AIMX?
All LMC6041AIMX units undergo pre-shipment inspection (PSI). If there is an issue with LMC6041AIMX, 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 LMC6041AIMX part is unused and in its original packaging.
Return procedure for LMC6041AIMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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