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Texas Instruments LMC6061AIM/NOPB
- Part No.:
- LMC6061AIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6061AIM/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:334
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Product details
Overview
LMC6061AIM/NOPB from Texas Instruments (formerly National Semiconductor) is a precision CMOS single micropower operational amplifier designed for ultra-low-input-bias-current, rail-to-rail output, single-supply instrumentation circuits. It delivers 100 µV input offset voltage, 20 µA supply current, 10 fA input bias current, 140 dB open-loop gain, and output swing within 10 mV of rails under 100 kΩ load - enabling high-accuracy signal conditioning in battery-powered medical sensors and handheld analyzers.
For engineers reviewing the LMC6061AIM/NOPB datasheet, LMC6061AIM/NOPB pinout, LMC6061AIM/NOPB application, or LMC6061AIM/NOPB equivalent, key selection criteria include guaranteed 10 fA input bias current at 25°C, −55°C to +125°C operating range for the AM-grade variant, rail-to-rail output with ground-referenced input common-mode range, and compatibility with low-leakage guard-ring PCB layouts for photodiode and piezoelectric transducer interfaces.
Technical Context
The LMC6061AIM/NOPB uses an advanced double-poly silicon-gate CMOS process to achieve ultra-low input bias current without compromising voltage gain or stability. Its output stage derives directly from the internal integrator - not a push-pull buffer - enabling rail-to-rail swing while maintaining low output impedance and high large-signal voltage gain (≥400 V/mV at 100 kΩ).
It features feed-forward compensation for wide capacitive-load tolerance and stable operation with high-impedance feedback networks. Input common-mode range extends to V− (ground), supporting true single-supply operation down to 4.5 V, and its 140 dB open-loop gain ensures <0.01% gain error in precision instrumentation amplifier configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 100 µV typical - enables sub-mV DC accuracy in sensor front-ends without trimming |
| Supply Current | 20 µA typical at 5 V - supports >10-year battery life in continuous-monitoring devices |
| Input Bias Current | 10 fA typical at 25°C - preserves signal integrity in picoamp-level photodiode and piezoelectric charge amplifiers |
| Open-Loop Gain | 140 dB typical - ensures ≤0.01% gain error in 100× instrumentation amplifier topologies |
| Rail-to-Rail Output | Swings within 10 mV of V+ and V− at 100 kΩ load - maximizes dynamic range in 3.3 V or 5 V systems |
| Input Common-Mode Range | Includes V− (ground) - allows direct interfacing to grounded transducers and single-ended sensors |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC-coupled precision measurement, integrators, and sample-and-hold circuits |
Pinout & Package
LMC6061AIM/NOPB is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with narrow body (M08A), 1.27 mm pitch, and surface-mount footprint. Thermal resistance θJA is 193°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Inverting Input (−) | Differential input node | Accepts feedback network connection; ultra-high impedance (≥10 TΩ) minimizes loading on high-Z sources |
| Non-Inverting Input (+) | Differential input node | Direct interface point for grounded or low-impedance sensor signals; common-mode range includes V− |
| Output | Amplified signal source | Rail-to-rail swing enables full utilization of ADC reference range; capable of sourcing/sinking ≥16 mA |
| V+ | Positive supply rail | Operates from 4.5 V to 15 V; supports single-supply and split-supply configurations |
| V− | Negative supply rail | Typically grounded in single-supply use; input common-mode extends to this pin |
| NC | No connect | Internally unused; must remain unconnected per datasheet to avoid latchup risk |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 10 fA typical - eliminates voltage errors across >1 GΩ feedback resistors in charge amplifiers |
| Rail-to-rail output with ground-referenced input | Output swings to within 10 mV of V+ and V−; input accepts signals at V− - enables true 0–5 V signal chain design |
| High open-loop gain | 140 dB typical - maintains <0.01% gain error even with 1% resistor tolerances in instrumentation amps |
| Micropower operation | 20 µA supply current - allows integration into always-on wearable biosensors with coin-cell batteries |
| Improved latchup immunity | Withstands 100 mA I/O surge - enhances robustness in field-deployed medical and industrial equipment |
Applications
| Photodiode Preamp | Hand-Held pH Probe |
|---|---|
|
Use Scenario: Amplifying nanoamp-level photocurrent from reverse-biased silicon photodiodes in portable spectrometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and 10 fA bias current, converting current to voltage with minimal offset drift. Use Value: Enables detection of <100 nA signals with <1 µV output error, critical for low-light absorbance measurements. |
Use Scenario: Signal conditioning for glass-electrode pH sensors in battery-powered field analyzers. IC Role / Device Role / Timing Role: High-impedance buffer and differential amplifier front-end, rejecting common-mode noise from electrode leakage. Use Value: Maintains >1014 Ω input resistance and <2.5 µV/°C offset drift, ensuring ±0.01 pH accuracy over temperature. |
| Piezoelectric Charge Amp | Medical ECG Front-End |
|
Use Scenario: Converting high-impedance charge output from accelerometers and pressure transducers in portable diagnostics. IC Role / Device Role / Timing Role: Integrating charge amplifier with ultra-low bias current and rail-to-rail output for full-scale analog-to-digital conversion. Use Value: Delivers linear response to ±100 pC inputs with <0.1% nonlinearity, eliminating need for external biasing networks. |
Use Scenario: Low-noise, low-power instrumentation amplifier stage in ambulatory ECG monitors. IC Role / Device Role / Timing Role: Precision gain-setting amplifier in 3-op-amp topology, providing high CMRR and DC stability. Use Value: Achieves 0.01% gain accuracy at AV = 100 and <100 nV/√Hz input-referred noise, preserving microvolt-level cardiac signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6062IM/NOPB | Dual-channel version with identical specs per channel; same 20 µA/channel supply current and 10 fA bias current | Reduces board space in multi-sensor systems but requires separate power routing for dual channels | Select when two matched amplifiers are needed in one package - e.g., instrumentation amp + reference buffer |
| OPA333AIDBVR | Zero-drift architecture; 2 µV max offset vs. 800 µV max for LMC6061AIM/NOPB; 17 µA supply current; 0.65 µV/°C drift vs. 1.0 µV/°C | Better DC precision for long-term drift-critical applications, but higher cost and no guaranteed 10 fA bias current | Select when ultra-low offset drift dominates over ultra-low bias current - e.g., precision weight scales, not photodiode amps |
Compared with LMC6061AIM/NOPB, LMC6062IM/NOPB offers channel density at identical bias-current performance, while OPA333AIDBVR trades guaranteed femtoamp input bias for superior offset stability - making LMC6061AIM/NOPB uniquely suited for charge-integration and ultra-high-impedance sensor interfaces where leakage current is the dominant error source.
Availability
LMC6061AIM/NOPB is available at Aetrix Electronics and suitable for battery-powered medical instrumentation, handheld analytical instruments, and low-leakage transducer signal conditioning requiring stable component supply across extended product lifecycles.
Supply support for LMC6061AIM/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 acquired National Semiconductor in 2011 and maintains full technical and manufacturing continuity for legacy precision analog products.
The LMC6061AIM/NOPB belongs to TI's precision micropower op-amp family, engineered specifically for ultra-low-input-bias-current applications including photodiode preamplifiers, piezoelectric charge amplifiers, and single-supply instrumentation systems.
FAQ
What is the maximum operating temperature range for the LMC6061AIM/NOPB?
The LMC6061AIM/NOPB is rated for operation from −55°C to +125°C, matching the AM-grade specification defined in the National Semiconductor datasheet. This extended temperature range supports deployment in automotive engine compartments, industrial control cabinets, and outdoor medical equipment where ambient thermal stress exceeds commercial limits.
Does the LMC6061AIM/NOPB support true single-supply operation with input signals at ground?
Yes, the LMC6061AIM/NOPB features an input common-mode voltage range that explicitly includes V−, allowing the non-inverting and inverting inputs to operate at 0 V when V− is grounded. This enables direct interfacing with grounded transducers, thermocouples, and bridge sensors without level-shifting circuitry - a core capability confirmed in the "General Description" and "DC Electrical Characteristics" sections of the datasheet.
What is the guaranteed input bias current for LMC6061AIM/NOPB across temperature?
The LMC6061AIM/NOPB guarantees a maximum input bias current of 100 fA at −55°C to +125°C, with typical performance at 10 fA at 25°C. This value is specified in the "DC Electrical Characteristics" table under the LMC6061AM column and validated by the "Input Bias Current vs Temperature" plot (Figure 01142217), confirming femtoamp-level leakage remains stable across the full operating range.
Can LMC6061AIM/NOPB drive capacitive loads directly, and what is the recommended approach?
The LMC6061AIM/NOPB is not optimized for direct capacitive load driving; its phase margin degrades with >100 pF loads. The datasheet recommends using a pull-up resistor to V+ (typically conducting ≥10 µA) or adding an RC network (R1/C1) in the feedback path to restore stability - as shown in Figure 2 and detailed in the "Capacitive Load Tolerance" section. These methods preserve pulse fidelity without requiring external isolation buffers.
Is LMC6061AIM/NOPB pin-compatible with other members of the LMC606x family?
Yes, the LMC6061AIM/NOPB shares identical 8-pin SOIC pinout with LMC6062 (dual) and LMC6064 (quad) variants - all follow the standard op-amp configuration (V+, In−, In+, V−, NC, Output, NC, NC). However, only the single-channel LMC6061AIM/NOPB provides guaranteed 10 fA input bias current; dual/quad versions specify 4 pA max, making them unsuitable for the most demanding high-impedance applications.
LMC6061AIM/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:
- 0.035V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.01 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 24µA
- Current - Output / Channel:
- 26 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
LMC6061AIM/NOPB FAQ
1.How can I place an order for LMC6061AIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6061AIM/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 LMC6061AIM/NOPB reliable?
The price and inventory of LMC6061AIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6061AIM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6061AIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6061AIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6061AIM/NOPB?
LMC6061AIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6061AIM/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 LMC6061AIM/NOPB?
For technical support, including LMC6061AIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6061AIM/NOPB requirements.
6.How does Aetrix verify that LMC6061AIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6061AIM/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 LMC6061AIM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6061AIM/NOPB?
All LMC6061AIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6061AIM/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 LMC6061AIM/NOPB part is unused and in its original packaging.
Return procedure for LMC6061AIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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