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Texas Instruments LMC6041IMX/NOPB
- Part No.:
- LMC6041IMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6041IMX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,960
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Product details
Overview
LMC6041IMX/NOPB from Texas Instruments is a single-channel CMOS micropower operational amplifier optimized for ultra-low-input-current, single-supply battery-powered systems. It delivers 2 fA typical input bias current, 10 µA/amp quiescent supply current, rail-to-rail output swing (to within 12 mV of rails at 15 V), and operates from 4.5 V to 15 V single supply - enabling precision signal conditioning in pH-probe buffers and photodiode preamplifiers.
For engineers reviewing the LMC6041IMX/NOPB datasheet, LMC6041IMX/NOPB pinout, LMC6041IMX/NOPB application, or LMC6041IMX/NOPB equivalent, key selection criteria include verified 2 fA input leakage, guaranteed rail-to-rail output drive into 25 kΩ loads, input common-mode range extending to ground, and SOIC-8 packaging with validated thermal resistance (RθJA = 165°C/W).
Technical Context
The LMC6041IMX/NOPB uses TI's double-poly silicon-gate CMOS process to achieve ultra-low input current without latch-up susceptibility. Its architecture supports true single-supply operation with input voltage range including ground and output swing to both rails - eliminating need for external pulldown resistors in low-voltage sensor interfaces.
It features 75 kHz gain-bandwidth product, 0.015 V/µs slew rate (typical), and >10 TΩ input resistance. Electrical characteristics are specified across –40°C to +85°C, with offset voltage drift of 1.3 µV/°C and PSRR of 75 dB (positive supply) and 94 dB (negative supply) at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 2 fA typical - enables femtoamp-level current measurement in piezoelectric charge amplifiers and electrometers. |
| Supply Current | 14–20 µA at 5 V - supports multi-year battery life in portable analytic instruments and smoke detectors. |
| Output Swing | Rail-to-rail: 0.004–0.030 V above V– and 4.97–4.987 V below V+ at 5 V - preserves full dynamic range in single-supply pH probe buffers. |
| Input Common-Mode Range | Includes ground (–0.4 V to V+ – 1.9 V) - allows direct interfacing with grounded transducers and silicon pressure sensors. |
| Gain-Bandwidth Product | 75 kHz - sufficient for DC-coupled instrumentation amplifier front-ends and low-frequency sensor signal conditioning. |
| Open-Loop Gain | 300–1000 V/mV - ensures <100 µV error in unity-gain buffer configurations with 1 MΩ load. |
| CMRR | 68–75 dB - maintains accuracy in noisy industrial environments where common-mode interference exceeds 100 mV. |
Pinout & Package
LMC6041IMX/NOPB is packaged in an 8-pin SOIC (D package) with standard pinout and no internal connections on pins 1, 5, and 8. The device requires no external pulldown resistors due to rail-to-rail output stage and ground-referenced input capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connection (NC) | Must be left unconnected or floated - no internal circuitry; avoids parasitic leakage paths in high-impedance layouts. |
| 2 | Inverting input (–IN) | Primary feedback node; accepts signals down to ground; guarded layout required for <1 pA leakage. |
| 3 | Noninverting input (+IN) | High-impedance sensor interface point; compatible with photodiodes, pH electrodes, and piezoelectric elements. |
| 4 | Negative supply (V–) | Ground reference in single-supply mode; must be tied to system GND - enables true ground-sensing capability. |
| 6 | Output (OUT) | Rail-to-rail capable; drives 100 kΩ loads to within 12 mV of supply rails - eliminates level-shifting in low-voltage ADC interfaces. |
| 7 | Positive supply (V+) | Single-supply input (4.5–15 V); powers internal CMOS circuitry and output stage without requiring split supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 2 fA typical - enables direct coupling to high-impedance sources (e.g., glass pH electrodes) without signal degradation. |
| Rail-to-rail output | Swings within 12 mV of V+ and V– at 5 V - maximizes ADC utilization in 3.3 V or 5 V microcontroller-based data loggers. |
| Single-supply operation | 4.5 V to 15 V range with input common-mode including ground - simplifies power design in portable medical and environmental sensors. |
| Insensitivity to latch-up | CMOS process eliminates destructive latch-up risk - improves reliability in transient-prone battery-powered systems. |
| High input impedance | >10 TΩ - prevents loading of microamp-level transducer outputs (e.g., infrared detectors, silicon strain gauges). |
Applications
| Battery-Powered pH Probe Buffer | Photodiode Pre-Amplifier |
|---|---|
Use Scenario: Signal conditioning for glass electrode-based pH meters operating from coin-cell batteries. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance electrode (≥1 GΩ) from downstream ADC while preserving DC accuracy. Use Value: 2 fA input bias current prevents electrode polarization drift; rail-to-rail output ensures full 0–14 pH range maps to 0–3.3 V ADC input. |
Use Scenario: Amplifying nanoamp photocurrent from silicon photodiodes in portable gas analyzers. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-high feedback resistance (>1 GΩ) and guarded input traces. Use Value: Input leakage <2 fA avoids baseline shift; 75 kHz GBW supports DC–100 Hz optical modulation schemes. |
| Piezoelectric Charge Amplifier | Fire/Smoke Detector Sensor Interface |
Use Scenario: Converting charge output from accelerometers or impact sensors in structural health monitoring nodes. IC Role / Device Role / Timing Role: Integrator-based charge amplifier with femtoamp input bias and low-noise (<83 nV/√Hz) performance. Use Value: 2 fA bias enables stable integration over seconds; 12.5 fA/√Hz current noise minimizes signal-to-noise degradation. |
Use Scenario: Low-power analog front-end for ionization chamber or optical smoke sensors in battery-operated alarms. IC Role / Device Role / Timing Role: Precision DC amplifier conditioning weak sensor currents (pA–nA) under wide temperature variation. Use Value: 10 µA supply current extends 10-year battery life; –40°C to +85°C specification ensures reliability in attic or garage installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6061IMX/NOPB | Higher GBW (1.3 MHz), higher IQ (85 µA), same 2 fA input bias and SOIC-8 package. | Better for AC-coupled sensor signals >1 kHz; unsuitable for multi-year battery life requirements. | Select when bandwidth >100 kHz is needed and power budget allows ≥6× higher supply current. |
| TLV2461CDR | 100 pA input bias (100,000× higher), 220 µA IQ, rail-to-rail I/O, SOIC-8. | Acceptable for µA-level transducers but not for pH electrodes or piezoelectric charge integration. | Choose only if cost sensitivity outweighs femtoamp performance - not suitable for true high-impedance applications. |
Compared with LMC6041IMX/NOPB, LMC6061IMX/NOPB trades micropower for speed, while TLV2461CDR sacrifices input leakage performance for lower unit cost - making LMC6041IMX/NOPB the sole option meeting <5 fA bias, <25 µA IQ, and ground-sensing capability in SOIC-8.
Availability
LMC6041IMX/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-term lifecycle support.
Supply support for LMC6041IMX/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 and low-power innovation.
The LMC604x family was designed specifically for ultra-low-power, high-input-impedance sensor signal conditioning in portable and battery-critical systems - targeting pH probes, fire detection, and field-deployable instrumentation.
FAQ
What is the maximum supply voltage for LMC6041IMX/NOPB?
The absolute maximum supply voltage for LMC6041IMX/NOPB is 16 V, but the recommended operating range is 4.5 V to 15.5 V for single-supply use. Operation above 15.5 V risks exceeding junction temperature limits and degrading long-term reliability - especially under sustained output load conditions.
Does LMC6041IMX/NOPB support dual-supply operation?
Yes, LMC6041IMX/NOPB supports dual-supply operation with ±2.25 V to ±7.75 V range. Its input common-mode range includes ground and output swings rail-to-rail relative to both supplies - enabling flexible configuration in legacy ±5 V systems while retaining ultra-low input bias current.
Can LMC6041IMX/NOPB drive capacitive loads directly?
LMC6041IMX/NOPB is not inherently stable with direct capacitive loads >100 pF. For loads >200 pF, external compensation (e.g., series resistor + pullup to V+) or indirect driving via isolation resistor is required - per Figure 6-2 and 6-3 in the official datasheet SNOS611F.
What is the input offset voltage specification for LMC6041IMX/NOPB?
LMC6041IMX/NOPB has a typical input offset voltage of ±1 mV, with a maximum of ±3 mV at 25°C for the AI grade. Over –40°C to +85°C, the max offset is ±3.3 mV - critical for DC-coupled applications like pH probe buffering where 1 mV error equals ~0.1 pH unit.
Is LMC6041IMX/NOPB pin-compatible with other LMC604x variants?
No - LMC6041IMX/NOPB (single-channel, SOIC-8) is not pin-compatible with LMC6042 (dual) or LMC6044 (quad). While all share identical pin functions per channel, channel count and pin assignments differ: LMC6041 uses pins 2/3/6 for –IN/+IN/OUT, whereas LMC6042 assigns separate pins for each channel (e.g., OUT A on pin 1, OUT B on pin 7).
LMC6041IMX/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
LMC6041IMX/NOPB FAQ
1.How can I place an order for LMC6041IMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6041IMX/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 LMC6041IMX/NOPB reliable?
The price and inventory of LMC6041IMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6041IMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6041IMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6041IMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6041IMX/NOPB?
LMC6041IMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6041IMX/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 LMC6041IMX/NOPB?
For technical support, including LMC6041IMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6041IMX/NOPB requirements.
6.How does Aetrix verify that LMC6041IMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6041IMX/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 LMC6041IMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6041IMX/NOPB?
All LMC6041IMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6041IMX/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 LMC6041IMX/NOPB part is unused and in its original packaging.
Return procedure for LMC6041IMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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