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Texas Instruments LMC6032IM/NOPB
- Part No.:
- LMC6032IM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6032IM/NOPB.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:15,156
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Product details
Overview
LMC6032IM/NOPB from Texas Instruments is a dual CMOS operational amplifier optimized for high-impedance, low-drift signal conditioning in single- or dual-supply systems. It delivers 126dB open-loop gain into 2kΩ, ultra-low 40fA input bias current, ±9mV max input offset voltage, and operates from 4.75V to 15.5V supply. It serves as a precision preamplifier in medical instrumentation front-ends where leakage and drift must be minimized.
For engineers reviewing the LMC6032IM/NOPB datasheet, LMC6032IM/NOPB pinout, LMC6032IM/NOPB application, or LMC6032IM/NOPB equivalent, key selection criteria include guaranteed 2.3μV/°C offset drift over –40°C to +85°C, rail-to-rail input common-mode range including V−, 1.1V/μs slew rate at ±7.5V, and verified stability with 600Ω loads - critical for current-to-voltage conversion and long-term integrator designs.
Technical Context
The LMC6032IM/NOPB employs a proprietary CMOS input stage with differential front-end architecture enabling input common-mode voltage extension to V− while maintaining ultra-low bias current. Its output stage supports rail-to-rail swing under 2kΩ and 600Ω loads, with sourcing/sinking asymmetry compensated via an additional gain stage for improved sinking capability.
It features internal compensation for unity-gain stability but requires external RC networks (e.g., series output resistor + feedback capacitor) when driving >100pF capacitive loads. Input capacitance sensitivity mandates guard-ring PCB layout or air-wire input routing to preserve sub-100fA bias performance in high-impedance applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input bias current | 40fA typical at 25°C - enables picoampere-level current sensing without significant error |
| Input offset voltage drift | ±2.3μV/°C - ensures <±0.2mV total drift over full –40°C to +85°C industrial range |
| Open-loop gain | 126dB into 2kΩ - provides >2000V/V loop gain for stable closed-loop configurations at 1kHz |
| Slew rate | 1.1V/μs at ±7.5V - supports 10kHz sine-wave output with <1% distortion at 8Vpp into 2kΩ |
| Input voltage noise | 22nV/√Hz at 1kHz - suitable for low-frequency sensor amplification with minimal added noise |
| Supply voltage range | 4.75V to 15.5V single supply - compatible with standard 5V and 12V systems without level-shifting |
| Common-mode input range | Includes V− to (V+)–1.9V - allows direct ground-referenced input in single-supply configurations |
Pinout & Package
LMC6032IM/NOPB is housed in an 8-pin SOIC (D package), 3.9mm × 4.9mm body, 1.27mm pitch, with exposed pad not present. Pin functions are validated per TI SNOS609D Rev FEBRUARY 2024.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | High-impedance node accepting signals down to V−; requires guard ring or air-wire routing to preserve 40fA bias spec |
| –IN A (Pin 2) | Inverting input, Channel A | Feedback node; sensitive to stray capacitance - layout must minimize trace length and parallel coupling |
| OUT A (Pin 1) | Output, Channel A | Capable of sourcing/sinking ≥22mA; add 50Ω series resistor + 5–10pF feedback cap for >100pF capacitive loads |
| V− (Pin 4) | Negative power supply | Reference for input common-mode range; must be decoupled with 0.1μF ceramic near pin |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent high-Z input; shares same process and drift characteristics as Channel A |
| –IN B (Pin 6) | Inverting input, Channel B | Configurable for independent gain/feedback; no crosstalk (<130dB isolation at 1kHz) |
| OUT B (Pin 7) | Output, Channel B | Fully independent output; supports simultaneous dual-channel buffering without interaction |
| V+ (Pin 8) | Positive power supply | Accepts up to 15.5V; quiescent current per amplifier remains stable at 375μA regardless of V+ |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends to V− and within 1.9V of V+, enabling true single-supply operation with ground-referenced sensors |
| Ultra-low input bias current | 40fA typical ensures <100μV error across 10GΩ source impedance - essential for piezoelectric and pH electrode interfaces |
| Specified drive capability | Guaranteed performance into both 2kΩ and 600Ω loads - eliminates need for output buffer stages in transimpedance designs |
| Low offset voltage drift | ±2.3μV/°C enables stable DC-coupled amplification over temperature without recalibration |
| Low quiescent current | 375μA per amplifier independent of V+ - supports battery-powered instrumentation with multi-year runtime |
Applications
| Medical Instrumentation Front-End | Current-to-Voltage Conversion |
|---|---|
Use Scenario: Amplifying microvolt-level EEG or ECG signals from dry electrodes with high source impedance (>10MΩ). IC Role / Device Role / Timing Role: High-impedance buffer and first-stage gain amplifier with DC-coupled path and minimal input current-induced offset. Use Value: 40fA bias current prevents electrode polarization errors; ±2.3μV/°C drift avoids thermal baseline wander during long recordings. | Use Scenario: Converting photodiode current (10pA–10nA) into measurable voltage in optical smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain and low-noise feedback network. Use Value: 22nV/√Hz input noise and 126dB gain ensure >80dB dynamic range; rail-to-rail input accommodates dark-current nulling at V−. |
| Long-Term Integrator | Sample-and-Hold Circuit |
Use Scenario: Precision charge integration over minutes/hours in radiation dosimetry or Coulomb counting. IC Role / Device Role / Timing Role: Integrator op-amp with ultra-low input bias and offset drift to minimize integration error accumulation. Use Value: 40fA bias yields <0.15pC/h error; ±2.3μV/°C drift contributes <0.5mV/h output drift - enabling hour-scale accuracy. | Use Scenario: Capturing and holding analog sensor outputs (e.g., thermocouple, strain gauge) for multiplexed ADC sampling. IC Role / Device Role / Timing Role: Unity-gain follower with low droop rate and high hold-mode impedance. Use Value: Input bias current <40fA limits droop to <0.5μV/s on 1nF hold capacitor - supports 16-bit resolution over 10ms hold time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual CMOS op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6042IM/NOPB | Higher 1.3MHz GBW, 1.3V/μs slew rate, 25nV/√Hz noise; same 40fA bias and pinout | Better for higher-frequency sensor interfaces (>100kHz) but consumes 450μA vs 375μA | Select when bandwidth >1MHz is required and power budget allows +20% IQ |
| OPA2182IDR | Zero-drift architecture, 0.003μV/°C drift, 5.7nV/√Hz noise; 20pA bias, SOIC-8, 36V supply | Superior DC precision and noise for lab-grade instrumentation; incompatible with ≤5V-only systems | Choose for ultra-stable DC gain paths where cost and 36V supply are acceptable |
Compared with LMC6032IM/NOPB, LMC6042IM/NOPB trades modest power increase for higher speed, while OPA2182IDR abandons ultra-low bias for near-zero drift and lower noise - making LMC6032IM/NOPB optimal for picoampere-sensitivity applications where moderate bandwidth suffices.
Availability
LMC6032IM/NOPB is available at Aetrix Electronics and suitable for medical instrumentation, precision sensor interfaces, and low-power portable diagnostics requiring stable component supply and long-lifecycle support.
Supply support for LMC6032IM/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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMC603x family was designed specifically for high-impedance, low-drift signal conditioning in battery-powered and single-supply instrumentation - emphasizing ultra-low input bias current, rail-to-rail input operation, and robust load-driving capability without external buffers.
FAQ
What is the maximum capacitive load the LMC6032IM/NOPB can drive without oscillation?
The LMC6032IM/NOPB is not inherently stable with large capacitive loads. It may oscillate with >100pF directly on the output. To maintain stability, TI recommends adding a 50Ω–100Ω series resistor between the output and load, plus a 5pF–10pF capacitor from output to inverting input. This configuration enables reliable operation with >1nF capacitive loads in sample-and-hold or filter applications using the LMC6032IM/NOPB.
Does the LMC6032IM/NOPB support true rail-to-rail output swing?
No - the LMC6032IM/NOPB provides rail-to-rail *input* common-mode range (including V−), but its output swing is limited. At VS = 5V and RL = 2kΩ, it delivers 0.10V to 4.87V; at VS = 15V, 0.26V to 14.63V. Output does not reach within 100mV of either rail under typical loads. This behavior is specified in the Electrical Characteristics table of the LMC6032IM/NOPB datasheet and confirmed across temperature.
Can the LMC6032IM/NOPB replace LM358 in existing designs?
The LMC6032IM/NOPB is pin-for-pin compatible with LM358 in SOIC-8 packages and offers superior bandwidth, input resistance, and bias current. However, its supply range (4.75V–15.5V) is narrower than LM358's (3V–32V), and it lacks the LM358's internal ESD protection diodes. Direct replacement is viable only if supply voltage stays within LMC6032IM/NOPB limits and external protection is added if inputs exceed rails - verified per LMC6032IM/NOPB Absolute Maximum Ratings.
What PCB layout techniques are mandatory to achieve the 40fA input bias current spec of the LMC6032IM/NOPB?
To achieve the 40fA input bias current, the LMC6032IM/NOPB requires guard rings surrounding both inputs on top and bottom PCB layers, tied to the average input potential. Surface contamination and humidity must be controlled; conformal coating is recommended. For highest reliability, TI advises lifting input pins off the board and wiring them in air - eliminating PCB surface leakage paths that would otherwise dominate the 40fA spec. These practices are documented in the LMC6032IM/NOPB layout guidelines.
Is the LMC6032IM/NOPB qualified for automotive applications?
No - the LMC6032IM/NOPB is rated for industrial temperature range (–40°C to +85°C) and carries no AEC-Q200 qualification. It is not intended for automotive use. For automotive-grade alternatives, TI offers the LMC6032QML-SP (space-grade) or OPA2182-Q1; neither matches the LMC6032IM/NOPB's 40fA bias but provide qualified reliability. The LMC6032IM/NOPB datasheet explicitly states "not for use in safety-critical applications" per its Important Notice section.
LMC6032IM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 1.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.04 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 750µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4.75 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
LMC6032IM/NOPB FAQ
1.How can I place an order for LMC6032IM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6032IM/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 LMC6032IM/NOPB reliable?
The price and inventory of LMC6032IM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6032IM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6032IM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6032IM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6032IM/NOPB?
LMC6032IM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6032IM/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 LMC6032IM/NOPB?
For technical support, including LMC6032IM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6032IM/NOPB requirements.
6.How does Aetrix verify that LMC6032IM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6032IM/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 LMC6032IM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6032IM/NOPB?
All LMC6032IM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6032IM/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 LMC6032IM/NOPB part is unused and in its original packaging.
Return procedure for LMC6032IM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC6032IM/NOPB Tags
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