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Texas Instruments LMC6041IM/NOPB
- Part No.:
- LMC6041IM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6041IM/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:176
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Product details
Overview
LMC6041IM/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 LMC6041IM/NOPB datasheet, LMC6041IM/NOPB pinout, LMC6041IM/NOPB application, or LMC6041IM/NOPB equivalent, key selection criteria include confirmed 2 fA input bias current, verified SOIC-8 package mapping, documented rail-to-rail output at 5V/15V supply, and validated use in high-impedance transducer interfaces where leakage-induced offset must be minimized.
Technical Context
The LMC6041IM/NOPB employs TI's double-poly silicon-gate CMOS process to achieve ultra-low input leakage while maintaining stability with capacitive loads and high feedback resistances. Its input common-mode range includes ground, and its output swings to both rails without external pulldown resistors - critical for single-supply sensor front-ends.
It features a 75 kHz gain-bandwidth product, 0.015 V/µs slew rate (typ), and >10 TΩ input resistance. The device is latch-up immune and supports operation from –40°C to +85°C, making it suitable for portable instrumentation and safety-critical analog monitoring where power and leakage constraints dominate design trade-offs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 14–20 µA (typ) at 5V - enables multi-year battery life in always-on sensor nodes. |
| Input Bias Current | 2 fA (typ) - preserves signal integrity in picoamp-level photodiode and pH electrode circuits. |
| Input Common-Mode Range | Includes ground (0 V) to (V+) – 2.3 V - supports direct interfacing to grounded sensors and single-supply reference buffers. |
| Rail-to-Rail Output | Swings within 10–30 mV of both rails (e.g., 0.004–4.987 V at 5V supply) - maximizes dynamic range without level-shifting circuitry. |
| Gain-Bandwidth Product | 75 kHz - sufficient for DC–10 kHz sensor signal conditioning (e.g., thermocouple, strain gauge, piezo charge amps). |
| Input Resistance | >10 TΩ - prevents loading of high-Z sources such as glass pH electrodes and electret microphones. |
| ESD Rating | ±500 V HBM - meets standard handling requirements for lab and production environments. |
Pinout & Package
LMC6041IM/NOPB is housed in an 8-pin SOIC (D package), with pin 1 unconnected (NC), pins 2 and 3 serving as inverting and noninverting inputs, pin 4 as V− (ground in single-supply), pin 6 as output, and pin 7 as V+ (positive supply). Pins 1, 5, and 8 are NC and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connection (NC) | Must float - no routing or soldering; avoids parasitic leakage paths in high-impedance layouts. |
| 2 | Inverting input (–IN) | Primary feedback node; requires guarded trace to minimize surface leakage in pH or photodiode applications. |
| 3 | Noninverting input (+IN) | High-Z sensor interface point; guard ring must be tied to same potential to suppress leakage currents. |
| 4 | Negative supply (V−) | Connected to ground in single-supply systems; establishes reference for rail-to-rail output swing. |
| 6 | Output (OUT) | Capable of sourcing/sinking up to 22 mA (5V); drives 100 kΩ loads while maintaining rail-to-rail swing. |
| 7 | Positive supply (V+) | Accepts 4.5–15 V; powers internal CMOS stages and output stage without external biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 2 fA typical - reduces voltage error below 1 µV in 1 GΩ source impedance applications (e.g., pH probe buffers). |
| Rail-to-rail output with no pulldown | Drives to within 10 mV of V− and V+ - eliminates need for external pull-down resistors in single-supply configurations. |
| Ground-referenced input common-mode range | Operates with VCM = 0 V - enables direct connection to grounded transducers (e.g., thermistors, RTDs, piezoresistive sensors). |
| Single-supply compatibility | Specified from 4.5 V to 15 V - supports coin-cell (3V boost), Li-ion (3.7V), and industrial 12V rails without level translation. |
| Latch-up immunity | CMOS process with robust isolation - prevents destructive latch-up during overvoltage or ESD events in field-deployed equipment. |
Applications
| pH-Probe Buffer Amplifier | Photodiode Preamplifier |
|---|---|
|
Use Scenario: High-impedance glass electrode (≥100 MΩ) outputs mV-level signals sensitive to leakage and bias current. IC Role / Device Role / Timing Role: Voltage follower buffer isolating electrode from measurement circuitry while preserving DC accuracy. Use Value: 2 fA input bias ensures <1 µV offset error at 1 GΩ source impedance, enabling ±0.01 pH resolution in portable analyzers. |
Use Scenario: Low-light detection using reverse-biased photodiode generating sub-nA photocurrents. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal dark-current contribution. Use Value: Ultra-high input resistance (>10 TΩ) and femtoamp bias prevent signal corruption, supporting 0.1 pA resolution in spectrophotometers. |
| Piezoelectric Charge Amplifier | Battery Monitoring Circuit |
|
Use Scenario: Piezoelectric sensor (e.g., vibration, impact) producing high-impedance charge pulses requiring integration. IC Role / Device Role / Timing Role: Integrator with ultra-low input leakage to maintain charge integrity over ms–s time constants. Use Value: 2 fA bias current limits drift to <100 µV/s in 1 nF feedback capacitor, enabling stable low-frequency shock detection. |
Use Scenario: Precision voltage monitoring of lithium coin cells or primary batteries in IoT endpoints. IC Role / Device Role / Timing Role: High-side or ratiometric voltage divider buffer feeding ADC reference or supervisor input. Use Value: 14 µA quiescent current extends 10-year battery life in maintenance-free asset trackers and environmental loggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower, low-input-current op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6061IM/NOPB | Higher GBW (550 kHz), higher IQ (65 µA), same 2 fA IB - uses newer process with improved noise and speed. | Better suited for AC-coupled sensor signals up to 100 kHz; less optimal for multi-year battery life. | Select when bandwidth >100 kHz is required and supply current budget allows ≥65 µA. |
| TLC27L1CDR | Higher input bias (0.6 pA), lower GBW (85 kHz), wider supply (3–16 V), but lower cost and broader temp range (–55°C to +125°C). | Acceptable for industrial temperature logging where femtoamp leakage is not critical. | Choose for cost-sensitive, extended-temperature applications where 0.6 pA IB is acceptable. |
Compared with LMC6041IM/NOPB, LMC6061IM/NOPB trades 5× higher supply current for 7× higher bandwidth and lower noise, while TLC27L1CDR offers wider temperature range and lower cost at the expense of 300× higher input bias - making LMC6041IM/NOPB uniquely balanced for ultra-low-leakage, long-life portable instrumentation.
Availability
LMC6041IM/NOPB is available at Aetrix Electronics and suitable for pH-probe buffering, photodiode preamplification, and piezoelectric charge amplification requiring stable component supply across multi-year production cycles.
Supply support for LMC6041IM/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, embedded processing, and power management ICs, with decades of expertise in precision op-amp design and manufacturing.
The LMC604x family was engineered specifically for ultra-low-power, high-impedance analog signal acquisition in portable and battery-constrained systems - emphasizing femtoamp input leakage, rail-to-rail operation, and single-supply usability.
FAQ
What is the maximum supply voltage for LMC6041IM/NOPB?
The absolute maximum supply voltage for LMC6041IM/NOPB is 16 V, but the recommended operating range is 4.5 V to 15 V for reliable performance. Operation at 15 V is fully characterized for rail-to-rail output swing, open-loop gain, and input common-mode range - critical for high-dynamic-range sensor interfaces. Exceeding 16 V risks permanent damage per the Absolute Maximum Ratings table.
Does LMC6041IM/NOPB support dual-supply operation?
Yes, LMC6041IM/NOPB supports dual-supply operation with ±2.25 V to ±7.75 V specified in Recommended Operating Conditions. In dual mode, V− is connected to the negative rail and V+ to the positive rail, enabling symmetric input/output swing around ground - useful for AC-coupled audio or instrumentation signals where bipolar referencing is required.
Can LMC6041IM/NOPB drive capacitive loads directly?
LMC6041IM/NOPB exhibits limited direct capacitive-load tolerance; stability degrades above ~100 pF without compensation. For loads >100 pF, TI recommends adding a series resistor (e.g., 20–100 Ω) between output and load, or using a pullup resistor to V+ (≥10 µA current) to improve phase margin - as validated in Figure 6-2 and 6-3 of the SNOS611F datasheet.
What is the input offset voltage specification for LMC6041IM/NOPB?
LMC6041IM/NOPB has a typical input offset voltage of ±1 mV, with a maximum of ±3 mV at 25°C (LMC604xAI grade). Over –40°C to +85°C, max offset is ±3.3 mV. This low VOS, combined with 1.3 µV/°C drift, ensures stable DC accuracy in precision buffer and integrator applications without frequent recalibration.
Is LMC6041IM/NOPB pin-compatible with other LMC604x variants?
No - LMC6041IM/NOPB (single-channel, SOIC-8) is not pin-compatible with LMC6042 (dual) or LMC6044 (quad), which share the same 8-pin or 14-pin footprints but assign different functions to pins 1, 5, and 8. Pin 1 is NC in LMC6041 but OUT A in LMC6042 - PCB layout must be dedicated to the single-channel variant to avoid functional failure.
LMC6041IM/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:
- -
- 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
LMC6041IM/NOPB FAQ
1.How can I place an order for LMC6041IM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6041IM/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 LMC6041IM/NOPB reliable?
The price and inventory of LMC6041IM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6041IM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6041IM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6041IM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6041IM/NOPB?
LMC6041IM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6041IM/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 LMC6041IM/NOPB?
For technical support, including LMC6041IM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6041IM/NOPB requirements.
6.How does Aetrix verify that LMC6041IM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6041IM/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 LMC6041IM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6041IM/NOPB?
All LMC6041IM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6041IM/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 LMC6041IM/NOPB part is unused and in its original packaging.
Return procedure for LMC6041IM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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