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Texas Instruments LMC6041AIMX/NOPB
- Part No.:
- LMC6041AIMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6041AIMX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,426
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Product details
Overview
LMC6041AIMX/NOPB from Texas Instruments is a single-channel, micropower CMOS operational amplifier optimized for ultra-low-input-current, rail-to-rail output, and single-supply operation (4.5V–15V). It delivers 2 fA typical input bias current, 10 µA supply current per amplifier, and rail-to-rail output swing - enabling precision signal conditioning in battery-powered pH probes, photodiode preamplifiers, and piezoelectric charge amplifiers.
For engineers reviewing the LMC6041AIMX/NOPB datasheet, LMC6041AIMX/NOPB pinout, LMC6041AIMX/NOPB application, or LMC6041AIMX/NOPB equivalent, key selection criteria include confirmed 2 fA input bias current, verified SOIC-8 package compatibility, guaranteed rail-to-rail output at 5V/15V single supply, and documented use in low-leakage sample-and-hold and instrumentation amplifier topologies.
Technical Context
The LMC6041AIMX/NOPB employs TI's double-poly silicon-gate CMOS process to achieve ultra-low input leakage while maintaining stability across capacitive loads and high-impedance feedback networks. Its input common-mode range includes ground, and its output swings within 30 mV of both rails under 100 kΩ load at 5V supply.
It features 75 kHz gain-bandwidth product, 0.015 V/µs slew rate (typ), and >10 TΩ input resistance - making it suitable for transducer interfacing where input loading must be minimized without external guard-ring biasing or pulldown resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 2 fA typical - enables direct connection to high-impedance sources (e.g., pH electrodes, photodiodes) without measurable DC error. |
| Supply Current | 14–20 µA at 5V - supports multi-year battery life in portable analyzers and smoke detectors. |
| Rail-to-Rail Output | Swings to within 30 mV of V− and V+ at 100 kΩ load - maximizes dynamic range in single-supply systems without level-shifting circuitry. |
| Input Common-Mode Range | Includes ground (0 V) up to (V+) − 2.3 V - allows direct sensing of grounded sensors and single-ended transducers. |
| Gain-Bandwidth Product | 75 kHz - sufficient for DC-coupled sensor buffering and low-frequency instrumentation (e.g., <10 kHz pH or gas detection signals). |
| Open-Loop Gain | 300–1000 V/mV - ensures <1 mV output error in unity-gain buffer configurations with 1 MΩ source impedance. |
| CMRR | 68–75 dB (25°C) - maintains accuracy in noisy industrial environments when rejecting common-mode interference on sensor lines. |
Pinout & Package
LMC6041AIMX/NOPB is housed in an 8-pin SOIC (D package), surface-mount, industry-standard outline with 1.27 mm pitch. Thermal resistance is 165°C/W (junction-to-ambient, SOIC-8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No Connection (NC) | Must remain unconnected; no internal function - floating or tied to ground degrades noise performance. |
| 2 | Inverting Input (−IN) | Primary differential input node; ultra-high impedance (≥10 TΩ) requires guarded PCB trace routing. |
| 3 | Noninverting Input (+IN) | Reference input node; same impedance as −IN; used for unity-gain follower or noninverting amplifier configurations. |
| 4 | Negative Supply (V−) | Ground reference for single-supply operation; connects directly to system GND in 0V–5V/15V configurations. |
| 6 | Output (OUT) | Rail-to-rail voltage source capable of sourcing/sinking ≥16 mA; drives 100 kΩ loads with <30 mV headroom. |
| 7 | Positive Supply (V+) | Single-supply rail (4.5–15 V); powers internal CMOS stages and output stage; decoupling capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 2 fA typical - eliminates offset drift in high-Z sensor interfaces (e.g., glass pH electrodes, piezoelectric elements). |
| Rail-to-rail output swing | Reaches within 30 mV of V− and V+ - preserves full signal amplitude in 3.3V/5V/12V battery-powered systems. |
| Single-supply operation | 4.5V to 15V range with ground-referenced inputs - removes need for dual supplies in portable instrumentation. |
| Input common-mode includes ground | Operates with VCM = 0 V - enables direct connection to grounded transducers (e.g., thermistors, RTDs) without level shifters. |
| Insensitivity to latch-up | CMOS process with inherent latch-up immunity - ensures robustness in transient-prone industrial sensor nodes. |
Applications
| pH-Probe Buffer Amplifier | Photodiode Preamplifier |
|---|---|
|
Use Scenario: Buffers high-impedance (≥10⁹ Ω) glass electrode output in handheld pH meters operating from coin-cell batteries. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating electrode from ADC input; provides low-noise, zero-drift buffering. Use Value: 2 fA input bias prevents electrode polarization and measurement drift over minutes/hours, extending calibration interval. |
Use Scenario: Converts photocurrent from reverse-biased silicon photodiode into measurable voltage in portable spectrometers. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with >1 GΩ feedback resistor; operates in DC–10 kHz bandwidth. Use Value: Ultra-low input current avoids TIA gain error; rail-to-rail output maximizes ADC utilization in 3.3V systems. |
| Piezoelectric Charge Amplifier | Battery Voltage Monitor |
|
Use Scenario: Integrates charge from impact-sensing piezoelectric film in wearable fall-detection devices. IC Role / Device Role / Timing Role: Charge amplifier with FET-input topology; integrates pC-level pulses into stable DC voltage. Use Value: 2 fA leakage ensures <0.1% charge loss over 100 ms integration window - critical for reliable event detection. |
Use Scenario: Monitors Li-ion cell voltage in wireless sensor nodes with 10-year battery target life. IC Role / Device Role / Timing Role: Precision divider + buffer feeding low-power ADC; draws <20 µA total quiescent current. Use Value: 14 µA supply current extends battery life beyond 10 years in sleep-mode-dominated operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6061IMX/NOPB | Higher GBW (1.3 MHz), higher IQ (120 µA), same SOIC-8 package and 2 fA input bias. | Better for AC-coupled sensor signals above 10 kHz; unsuitable for multi-year battery life. | Select when bandwidth >100 kHz is required and power budget allows ≥10× higher supply current. |
| OPA316IDBVR | Lower input bias (0.2 fA), lower noise (11 nV/√Hz), but 50 µA IQ and no guaranteed rail-to-rail output at light loads. | Superior for ultra-low-noise photodiode apps; less predictable output swing near rails in 3.3V systems. | Prefer for photon-counting or low-noise lab instruments; avoid where guaranteed rail-to-rail swing is mandatory. |
Compared with LMC6041AIMX/NOPB, LMC6061IMX/NOPB trades 12× higher supply current for 17× greater bandwidth, while OPA316IDBVR offers 10× lower input bias but sacrifices guaranteed rail-to-rail output and adds 3.5× supply current - making LMC6041AIMX/NOPB optimal for ultra-low-power, DC-precision, single-supply sensor front-ends.
Availability
LMC6041AIMX/NOPB is available at Aetrix Electronics and suitable for battery monitoring, portable analytical instruments, and fire/smoke-detection systems requiring stable component supply across extended production lifecycles.
Supply support for LMC6041AIMX/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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amps and low-power signal conditioning.
The LMC604x family was designed specifically for ultra-low-power, high-impedance sensor interfacing in portable and battery-operated instrumentation - prioritizing femtoampere input leakage, rail-to-rail output, and single-supply usability.
FAQ
What is the maximum supply voltage for LMC6041AIMX/NOPB?
The absolute maximum supply voltage for LMC6041AIMX/NOPB is 16 V, but the recommended operating range is 4.5 V to 15.5 V for single-supply use. Exceeding 15.5 V risks reliability degradation, especially when driving outputs into short-circuit conditions. The LMC6041AIMX/NOPB datasheet specifies 15.5 V as the upper limit for continuous operation with full parameter guarantees.
Does LMC6041AIMX/NOPB support true rail-to-rail input?
No, LMC6041AIMX/NOPB 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. However, it does provide rail-to-rail output swing, reaching within 30 mV of both supply rails under 100 kΩ load. This makes LMC6041AIMX/NOPB ideal for single-supply applications where the input signal stays above ground but full output swing is required.
Can LMC6041AIMX/NOPB drive capacitive loads directly?
LMC6041AIMX/NOPB is not unity-gain stable with direct capacitive loads >100 pF. For loads >100 pF, external compensation is required - such as adding a series resistor (e.g., 20 Ω) between output and load, or using a pullup resistor to V+ (≥10 µA current) to improve phase margin. The LMC6041AIMX/NOPB datasheet Figure 6-2 and Section 6.1.3 detail proven compensation methods for 1 nF+ loads.
What is the thermal resistance (θJA) of LMC6041AIMX/NOPB in SOIC-8 package?
The junction-to-ambient thermal resistance (θJA) for LMC6041AIMX/NOPB in the SOIC-8 (D) package is 165°C/W, as specified in Section 5.4 of the official datasheet. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves with added copper area or thermal vias. Derating is required above 85°C ambient to maintain TJ ≤ 110°C.
Is LMC6041AIMX/NOPB suitable for pH probe applications?
Yes, LMC6041AIMX/NOPB is explicitly validated for pH-probe buffer amplifiers due to its 2 fA input bias current, which prevents electrode polarization and measurement drift. Its rail-to-rail output and ground-referenced input enable direct interface with glass electrodes in single-supply handheld meters. Application note SNOS611F includes pH probe schematics and layout guidance confirming LMC6041AIMX/NOPB suitability.
LMC6041AIMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- 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/NOPB FAQ
1.How can I place an order for LMC6041AIMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6041AIMX/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 LMC6041AIMX/NOPB reliable?
The price and inventory of LMC6041AIMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6041AIMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6041AIMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6041AIMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6041AIMX/NOPB?
LMC6041AIMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6041AIMX/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 LMC6041AIMX/NOPB?
For technical support, including LMC6041AIMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6041AIMX/NOPB requirements.
6.How does Aetrix verify that LMC6041AIMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6041AIMX/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 LMC6041AIMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6041AIMX/NOPB?
All LMC6041AIMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6041AIMX/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 LMC6041AIMX/NOPB part is unused and in its original packaging.
Return procedure for LMC6041AIMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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