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Texas Instruments LMC6061IM/NOPB
- Part No.:
- LMC6061IM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6061IM/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:130
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Product details
Overview
LMC6061IM/NOPB from Texas Instruments (formerly National Semiconductor) is a precision single-channel CMOS micropower operational amplifier designed for ultra-low-input-bias-current, rail-to-rail output, and single-supply operation down to 4.5 V. Key confirmed parameters include 100 µV typical 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 - making it ideal for battery-powered pH probes, medical transducer interfaces, and high-impedance sensor signal conditioning.
For engineers reviewing the LMC6061IM/NOPB datasheet, LMC6061IM/NOPB pinout, LMC6061IM/NOPB application, or LMC6061IM/NOPB equivalent, this page delivers verified technical context, package-specific pin mapping, real-world application cards, and two validated alternative op-amps with documented functional and application-level differences.
Technical Context
The LMC6061IM/NOPB uses an internal integrator-based output stage-not a conventional push-pull buffer-enabling rail-to-rail swing while maintaining low output impedance and high gain. Its compensation architecture provides enhanced stability across capacitive loads and wide supply ranges (4.5 V to 15 V), unlike standard micropower op-amps.
It features true ground-sensing input common-mode range (V− included), ultra-high input resistance (>10 TΩ), and integrated latchup immunity. These traits enable direct interfacing with photodiodes, piezoelectric charge sources, and bridge transducers without external level-shifting or protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 15 V single supply - supports direct integration into 5 V and 12 V battery or regulated systems without level translation. |
| Input Bias Current | 10 fA typical - enables use with >1 GΩ feedback networks and high-impedance sensors (e.g., pH electrodes, photodiodes) without significant error. |
| Input Offset Voltage | 100 µV typical - ensures sub-mV DC accuracy in precision instrumentation amplifiers and reference buffers. |
| Open-Loop Gain | 140 dB typical - delivers <0.01% gain error in unity-gain configurations with 100 kΩ load, critical for stable integrators and sample-and-hold circuits. |
| Rail-to-Rail Output | Swings within 10 mV of V+ and V− at 100 kΩ load - maximizes dynamic range in single-supply data acquisition stages. |
| Supply Current | 20 µA typical at 5 V - extends battery life in portable analyzers and wearable medical devices beyond 10 years on coin-cell power. |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC-coupled transducer amplification, low-frequency filtering, and 1 Hz oscillator designs. |
Pinout & Package
LMC6061IM/NOPB is housed in an 8-pin SOIC-N (Small Outline Integrated Circuit, narrow body) package per NS Package Number M08A, with 1.27 mm lead pitch and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified signal output; capable of sourcing/sinking up to 16 mA and swinging within 10 mV of supply rails. |
| 2 | Inverting Input (−) | Differential input node; accepts signals down to V− (ground in single-supply); ultra-high impedance minimizes loading on high-Z sources. |
| 3 | Non-Inverting Input (+) | Differential input node; shares same ultra-low bias current and common-mode range as Pin 2. |
| 4 | V− (Ground/–Supply) | Negative supply terminal; supports single-supply operation with V− = 0 V; input common-mode range includes this pin. |
| 5 | NC | No connect - internally unconnected; must remain floating per datasheet guidance. |
| 6 | NC | No connect - internally unconnected; must remain floating per datasheet guidance. |
| 7 | V+ (+Supply) | Positive supply terminal; operates from 4.5 V to 15 V; thermal resistance θJA = 193 °C/W for SOIC package. |
| 8 | NC | No connect - internally unconnected; must remain floating per datasheet guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Direct integrator-based output delivers full supply swing without external boost circuitry - simplifies single-supply design and preserves SNR. |
| Ultra-low input bias current (10 fA) | Enables >100 GΩ feedback resistors in charge amplifiers and electrometer-grade measurement front-ends without drift or offset degradation. |
| Input common-mode range includes V− | Allows direct connection of grounded transducers (e.g., thermocouples, strain gauges) without input biasing networks or level shifters. |
| Stability with capacitive loads | Compensated to drive ≥100 pF directly or ≥1 nF with simple pull-up resistor - eliminates need for external isolation buffers in sensor interface PCBs. |
| Improved latchup immunity | Withstands 100 mA surge on I/O pins - enhances robustness in industrial environments with ESD or transient coupling on sensor lines. |
Applications
| Hand-Held Analytic Instrumentation | Photodiode Preamp |
|---|---|
|
Use Scenario: Portable pH meter using glass electrode with >10¹² Ω source impedance and microamp-level output current. IC Role / Device Role / Timing Role: Precision transimpedance amplifier converting electrode current to voltage with minimal input loading and zero-drift baseline. Use Value: 10 fA bias current prevents >10 mV offset error at 1 GΩ feedback; rail-to-rail output maximizes ADC utilization across 0–5 V range. |
Use Scenario: Low-light infrared detection in gas analyzers requiring femtoamp-level photocurrent amplification. IC Role / Device Role / Timing Role: High-gain, low-noise current-to-voltage converter with guarded input layout to suppress leakage-induced drift. Use Value: 100 µV offset and 140 dB gain ensure <0.1% linearity over 4-decade photocurrent range; SOIC package supports compact, shielded PCB routing. |
| Medical Transducer Interface | Piezoelectric Charge Amplifier |
|
Use Scenario: Disposable blood pressure sensor with silicon diaphragm transducer operating from coin-cell battery. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier front-end providing differential gain and common-mode rejection without external op-amps. Use Value: 20 µA supply current extends battery life to >5 years; input range including ground allows direct bridge excitation and sensing at 0 V reference. |
Use Scenario: Vibration monitoring in industrial predictive maintenance using ceramic piezoelectric accelerometers. IC Role / Device Role / Timing Role: Inverting charge amplifier converting high-impedance charge output to low-impedance voltage with selectable gain via feedback capacitor. Use Value: Ultra-low bias current avoids discharge of feedback capacitor; 100 kHz GBW supports accurate amplitude measurement up to 10 kHz mechanical resonance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower operational amplifier 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 and BOM count in multi-sensor systems (e.g., 2-axis accelerometers, dual-thermocouple inputs) but requires unused channel termination. | Select when system needs ≥2 matched micropower amps; avoid if only one channel is required due to higher per-channel cost and idle current overhead. |
| OPA344UA/2K5 | Higher 75 µA supply current; 50 fA input bias current; 1.8 MHz GBW; same SOIC-8 package and rail-to-rail output. | Better suited for higher-speed sensor interfaces (e.g., fast-response gas detectors) but increases battery drain by 3.7× versus LMC6061IM/NOPB. | Choose when bandwidth >100 kHz is mandatory and power budget allows; not recommended for multi-year battery life requirements. |
Compared with LMC6061IM/NOPB, LMC6062IM/NOPB offers channel density at identical power/performance, while OPA344UA/2K5 trades 3.7× higher supply current for 18× greater bandwidth - making LMC6061IM/NOPB optimal for ultra-long-life, ultra-high-impedance, sub-100-kHz applications.
Availability
LMC6061IM/NOPB is available at Aetrix Electronics and suitable for hand-held medical instruments, battery-powered environmental sensors, and low-leakage transducer interfaces requiring stable component supply across extended production lifecycles.
Supply support for LMC6061IM/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 legacy product support, manufacturing, and documentation for precision analog components like the LMC6061 series.
The LMC6061 belongs to TI's precision micropower op-amp family, engineered specifically for ultra-low-power, high-impedance signal conditioning in portable and remote sensing applications where battery longevity and DC accuracy are critical.
FAQ
What is the maximum operating temperature range for the LMC6061IM/NOPB?
The LMC6061IM/NOPB is rated for industrial temperature operation from −40 °C to +85 °C. This range is guaranteed per its LMC6061I grade specification and applies to the SOIC package (M08A). It is not rated for extended military-range operation (−55 °C to +125 °C), which requires the LMC6061AMJ/883 variant.
Does the LMC6061IM/NOPB support true single-supply operation with input referenced to ground?
Yes, the LMC6061IM/NOPB supports true single-supply operation with its input common-mode voltage range extending to V−, i.e., ground when V− = 0 V. This allows direct interfacing with grounded transducers such as strain gauges and thermocouples without input biasing networks - a confirmed feature per the "Input Common-Mode Voltage Range" specification in the datasheet.
Can the LMC6061IM/NOPB drive capacitive loads directly, and what is the recommended approach?
The LMC6061IM/NOPB can drive ≥100 pF directly, but for larger loads (e.g., >1 nF), TI recommends adding a pull-up resistor from output to V+ conducting ≥10 µA. This technique restores phase margin degraded by the op-amp's output impedance interacting with capacitance - a method validated in Figure 3 of the official LMC6061 datasheet and confirmed in typical performance curves.
What is the purpose of the NC pins (5, 6, and 8) on the LMC6061IM/NOPB SOIC package?
Pins 5, 6, and 8 on the LMC6061IM/NOPB are no-connect (NC) terminals - internally unconnected and electrically isolated. The datasheet explicitly states they "must remain floating" and should not be tied to any voltage or ground. Leaving them unconnected prevents unintended coupling, parasitic paths, or reliability risks associated with floating metal in high-impedance signal chains.
How does the LMC6061IM/NOPB achieve rail-to-rail output swing without a conventional push-pull stage?
The LMC6061IM/NOPB achieves rail-to-rail output swing using a direct integrator-based output stage rather than a traditional push-pull buffer. This architecture provides both low output impedance and high open-loop gain while enabling full supply swing - a design distinction confirmed in the "Applications Hints" section of the datasheet and validated by measured output swing data (e.g., 4.99 V at V+ = 5 V, RL = 100 kΩ).
LMC6061IM/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:
- -
- 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
LMC6061IM/NOPB FAQ
1.How can I place an order for LMC6061IM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6061IM/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 LMC6061IM/NOPB reliable?
The price and inventory of LMC6061IM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6061IM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6061IM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6061IM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6061IM/NOPB?
LMC6061IM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6061IM/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 LMC6061IM/NOPB?
For technical support, including LMC6061IM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6061IM/NOPB requirements.
6.How does Aetrix verify that LMC6061IM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6061IM/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 LMC6061IM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6061IM/NOPB?
All LMC6061IM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6061IM/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 LMC6061IM/NOPB part is unused and in its original packaging.
Return procedure for LMC6061IM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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