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Texas Instruments LMC6061IMX
- Part No.:
- LMC6061IMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6061IMX.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
LMC6061IMX from Texas Instruments (formerly National Semiconductor) is a precision CMOS single micropower operational amplifier optimized for battery-powered instrumentation. It delivers 100 µV input offset voltage, 10 fA input bias current, rail-to-rail output swing within 10 mV of supply rails under 100 kΩ load, and operates from 4.5 V to 15 V single supply - enabling high-accuracy signal conditioning in handheld pH probes and medical sensors.
For engineers reviewing the LMC6061IMX datasheet, LMC6061IMX pinout, LMC6061IMX application, or LMC6061IMX equivalent, key selection criteria include ultra-low input bias current for photodiode preamplification, guaranteed rail-to-rail output swing at micropower supply current (20 µA), and input common-mode range extending to V− - critical for single-supply transducer interfaces and charge amplifiers.
Technical Context
The LMC6061IMX uses an internal integrator-based output stage instead of a conventional push-pull buffer, enabling rail-to-rail output swing while maintaining low output impedance and high open-loop gain (140 dB). Its double-Poly Silicon-Gate CMOS process ensures ultra-low leakage and improved latchup immunity.
It features feed-forward compensation for stability across wide operating conditions, supports capacitive load driving with external pull-up resistors or RC networks, and requires guarding techniques for high-impedance PCB layouts due to its 10 fA input bias current specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 100 µV typical - enables sub-mV DC accuracy in precision sensor front-ends without trimming. |
| Input Bias Current | 10 fA typical - preserves signal integrity in photodiode, piezoelectric, and high-Z transducer interfaces. |
| Supply Current | 20 µA typical at 5 V - supports multi-year battery life in portable instrumentation. |
| Output Swing | Within 10 mV of V+ and V− at 100 kΩ load - maximizes dynamic range in single-supply systems. |
| Input Common-Mode Range | Extends to V− (ground) - allows direct interfacing with grounded sensors and bridge circuits. |
| Open-Loop Gain | 140 dB typical - ensures <0.01% gain error in high-precision instrumentation amplifier topologies. |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC-coupled sensor conditioning, integrators, and sample-and-hold circuits. |
Pinout & Package
LMC6061IMX is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package, designated M08A by National Semiconductor, with standard narrow-body dimensions and surface-mount compatibility.
| 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 | Connects to reference or sensor; common-mode range includes V−, enabling ground-referenced inputs. |
| Output | Amplified signal output | Rail-to-rail swing (within 10 mV of V+/V−) supports full supply utilization in single-supply designs. |
| V+ | Positive power supply | Operates from 4.5 V to 15 V; thermal resistance θJA = 193 °C/W for SOIC package. |
| V− | Negative power supply / ground | Serves as circuit ground in single-supply mode; input common-mode extends to this pin. |
| NC | No connect | Pin 6 is unconnected internally; must remain floating or tied to ground per layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Delivers usable output swing down to 10 mV above V− and 10 mV below V+, maximizing signal headroom in 5 V or 3.3 V systems. |
| Ultra-low input bias current | 10 fA typical enables accurate amplification of picoamp-level currents from photodiodes and piezoelectric transducers. |
| Single-supply operation | Input common-mode range includes V−, allowing direct interface with grounded sensors without level-shifting circuitry. |
| Micropower consumption | 20 µA supply current permits integration into always-on, battery-operated devices with multi-year runtime. |
| High open-loop gain | 140 dB ensures minimal gain error (<0.01%) in precision closed-loop configurations such as instrumentation amplifiers. |
Applications
| Hand-Held Analytic Instruments | Photodiode Preamp |
|---|---|
Use Scenario: Portable pH meters and gas detectors requiring stable, low-drift amplification of microvolt-level electrode signals. IC Role / Device Role / Timing Role: Precision DC-coupled transducer amplifier with zero-input-offset and rail-to-rail output for analog front-end signal conditioning. Use Value: 100 µV offset and 10 fA bias current enable sub-0.01 pH resolution without calibration drift over battery life. |
Use Scenario: Low-light optical sensing in spectrophotometers and environmental monitors using reverse-biased photodiodes. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal input loading and dark-current error. Use Value: 10 fA input bias current prevents signal corruption from diode leakage, preserving SNR in femtoamp-range measurements. |
| Medical Instrumentation | Charge Amplifier |
Use Scenario: Disposable biosensors and wearable ECG front-ends needing ultra-low power and high CMRR. IC Role / Device Role / Timing Role: First-stage amplifier in instrumentation amplifier topology, providing high input impedance and common-mode rejection. Use Value: Input common-mode range to V− and 85 dB CMRR allow direct connection to grounded biopotential electrodes. |
Use Scenario: Dynamic pressure measurement in industrial vibration sensors using piezoelectric elements. IC Role / Device Role / Timing Role: Integrating charge amplifier converting high-impedance charge output into low-impedance voltage signal. Use Value: 10 fA bias current prevents discharge of integration capacitor, ensuring stable low-frequency response down to 0.1 Hz. |
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 |
|---|---|---|---|
| LMC6062IMX | Dual-channel version with identical specs per channel; same 20 µA/channel supply current and 10 fA bias current. | Used where space-constrained dual-sensor conditioning is required; not drop-in for single-channel LMC6061IMX layouts. | Select when two matched amplifiers are needed in one package - saves board area but requires redesign of routing and decoupling. |
| OPA333AIDBVR | Zero-drift architecture; 0.1 µV/°C offset drift vs. LMC6061IMX's 1.0 µV/°C; higher supply current (17 µA vs. 20 µA). | Better for DC-critical applications with wide temperature swings; less suitable for ultra-high-Z nodes due to 200 pA bias current. | Choose OPA333AIDBVR for <1 µV total offset drift over −40°C to +85°C; retain LMC6061IMX for photodiode or piezo charge integration. |
Compared with LMC6061IMX, LMC6062IMX offers channel density at identical performance per channel but requires layout changes, while OPA333AIDBVR improves long-term DC stability at the cost of 20,000× higher input bias current - making it unsuitable for femtoamp-level signal sources.
Availability
LMC6061IMX is available at Aetrix Electronics and suitable for hand-held analytic instruments, photodiode preamplifiers, and medical instrumentation requiring stable component supply across extended production lifecycles.
Supply support for LMC6061IMX 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 supply chain continuity for legacy precision analog products.
The LMC6061IMX belongs to National's LMC60xx micropower precision op-amp family, engineered specifically for ultra-low-power, high-impedance sensor signal conditioning in portable and battery-operated instrumentation.
FAQ
What is the maximum operating temperature range for the LMC6061IMX?
The LMC6061IMX is rated for operation from −40°C to +85°C, matching the LMC6061I grade specified in the original National Semiconductor datasheet. This industrial temperature range is validated across all electrical parameters including input offset voltage, bias current, and output swing - ensuring reliability in handheld and field-deployed instrumentation environments where ambient temperatures fluctuate significantly.
Does the LMC6061IMX support true rail-to-rail input operation?
No, the LMC6061IMX does not support rail-to-rail input. Its input common-mode voltage range extends to V− (ground) but only up to V+ − 2.3 V at 25°C, as confirmed in the DC Electrical Characteristics table. This design enables robust single-supply operation with grounded sensors while maintaining precision - unlike rail-to-rail input op-amps that sacrifice input stage linearity or noise performance.
Can the LMC6061IMX drive capacitive loads directly?
The LMC6061IMX is not optimized for direct capacitive load driving; its phase margin degrades with >100 pF loads. As documented in Applications Hints, stable operation requires either a pull-up resistor to V+ (≥10 µA current), series isolation resistor + feedback capacitor compensation, or parallel resistive loading - techniques validated in Figures 2 and 3 of the official datasheet to preserve pulse response and prevent oscillation.
Is the LMC6061IMX pin-compatible with other LMC606x variants?
Yes, the LMC6061IMX shares identical 8-pin SOIC (M08A) pinout and footprint with LMC6061AIM, LMC6061AIMX, and LMC6061IM - all belong to the same ordering row and mechanical package family. Electrical differences exist only in grade (A-grade vs. standard I-grade), but pin functions, spacing, and soldering profiles are fully interchangeable for drop-in replacement in existing SOIC layouts.
What is the typical slew rate of the LMC6061IMX?
The LMC6061IMX has a typical slew rate of 35 V/ms (0.035 V/µs) at V+ = 15 V, as measured in voltage-follower configuration with a 10 V step input. This value is consistent across all LMC6061 variants and reflects its micropower design trade-off: sufficient for DC and low-frequency sensor conditioning (e.g., pH, temperature, pressure), but not intended for high-speed signal processing or audio applications.
LMC6061IMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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
LMC6061IMX FAQ
1.How can I place an order for LMC6061IMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6061IMX 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 LMC6061IMX reliable?
The price and inventory of LMC6061IMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6061IMX is usually 5 days.
3.What payment methods are accepted for LMC6061IMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6061IMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6061IMX?
LMC6061IMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6061IMX 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 LMC6061IMX?
For technical support, including LMC6061IMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6061IMX requirements.
6.How does Aetrix verify that LMC6061IMX is sourced from the original manufacturer or authorized distributors?
All LMC6061IMX 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 LMC6061IMX meets industry standards.
7.What is the process for return or replacement of LMC6061IMX?
All LMC6061IMX units undergo pre-shipment inspection (PSI). If there is an issue with LMC6061IMX, 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 LMC6061IMX part is unused and in its original packaging.
Return procedure for LMC6061IMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC6061IMX Tags
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