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Texas Instruments LMC6032IMX/NOPB
- Part No.:
- LMC6032IMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6032IMX/NOPB.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:134,345
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Product details
Overview
LMC6032IMX/NOPB from Texas Instruments is a dual CMOS operational amplifier optimized for high-impedance, low-leakage signal conditioning. It delivers 126dB open-loop gain into 2kΩ, ultra-low 40fA input bias current, and rail-to-rail input common-mode range extending to V−. It operates from single 5V or dual ±7.5V supplies and is used in precision medical instrumentation front-ends and long-term integrators.
For engineers reviewing the LMC6032IMX/NOPB datasheet, LMC6032IMX/NOPB pinout, LMC6032IMX/NOPB application, or LMC6032IMX/NOPB equivalent, key selection criteria include guaranteed 2.3μV/°C offset drift, 1.1V/μs slew rate at ±7.5V, 22nV/√Hz input voltage noise, operation down to –40°C, and SOIC-8 package compatibility with legacy LM358 layouts.
Technical Context
The LMC6032IMX/NOPB uses a proprietary CMOS input stage with differential front-end architecture enabling input common-mode voltage to reach V− while maintaining ultra-low bias current. Its output stage supports rail-to-rail swing under 2kΩ loads and includes internal compensation for stable unity-gain operation.
It features independent quiescent current (375μA/amplifier) unaffected by supply voltage, low THD (0.2% at 10kHz), and 1.4MHz gain-bandwidth product. Input impedance exceeds 1TΩ, and crosstalk between channels is –130dB at 1kHz - critical for dual-channel instrumentation where channel isolation is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input bias current | 40fA typical - enables use with >1GΩ source impedances without significant DC error |
| Offset voltage drift | ±2.3μV/°C - ensures <±20μV total drift over –40°C to +85°C operating range |
| Slew rate | 1.1V/μs at ±7.5V - supports 10kHz full-power bandwidth with 10Vpp output |
| Open-loop gain | 2000V/mV into 2kΩ - maintains >60dB loop gain at 100kHz for precision closed-loop designs |
| Input voltage noise | 22nV/√Hz at 1kHz - suitable for low-frequency sensor amplification without dominant noise contribution |
| CMRR | 83dB min at 25°C - rejects common-mode interference in single-supply transducer interfaces |
| Supply range | 4.75V to 15.5V single or ±2.375V to ±7.75V dual - compatible with standard 5V and ±5V systems |
Pinout & Package
LMC6032IMX/NOPB is packaged in an 8-pin SOIC (D package), 1.27mm pitch, with exposed pad not present. Pin functions are validated per TI SNOS609D Rev F (Feb 2024).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | Accepts signals down to V−; high-impedance node requiring guard ring layout for fA-level accuracy |
| –IN A (Pin 2) | Inverting input, Channel A | Feedback node; sensitive to stray capacitance - layout must minimize trace length and parasitic C |
| OUT A (Pin 1) | Output, Channel A | Capable of sourcing/sinking ≥22mA; requires series resistor for >100pF capacitive load stability |
| 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; identical electrical specs to Pin 3 - enables dual-sensor buffering |
| –IN B (Pin 6) | Inverting input, Channel B | Second feedback node; isolated from Channel A to maintain >130dB inter-channel crosstalk |
| OUT B (Pin 7) | Output, Channel B | Independent output drive; no shared output stage - allows asynchronous dual-channel operation |
| V+ (Pin 8) | Positive power supply | Supports up to 15.5V; quiescent current stable across full range - simplifies supply design |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes V− and extends within 1.9V of V+ - eliminates level-shifting in single-supply sensor interfaces |
| Ultra-low input bias current | 40fA typical at 25°C - enables integration with piezoelectric, pH, and photodiode sensors without leakage-induced error |
| Low offset voltage drift | 2.3μV/°C - reduces calibration frequency in portable medical devices operating across ambient temperature swings |
| Stable into 600Ω loads | Specified performance maintained at 600Ω - supports direct driving of analog-to-digital converter input buffers |
| Single-supply operation | Functional from 4.75V - interoperable with 5V microcontrollers and data acquisition systems |
Applications
| High-Impedance Sensor Buffer | Current-to-Voltage Converter |
|---|---|
Use Scenario: Amplifying output of a glass pH electrode with >100MΩ source impedance in portable water quality analyzers. IC Role / Device Role / Timing Role: High-Z buffer isolating electrode from downstream circuitry while preserving mV-level DC accuracy. Use Value: 40fA bias current prevents >0.1mV input error at 25°C; 2.3μV/°C drift limits thermal drift to <0.2mV over 0–50°C operating range. | Use Scenario: Converting photocurrent from a 10nA-range photodiode in optical smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with 100MΩ feedback resistor delivering linear, low-noise voltage output. Use Value: 22nV/√Hz input voltage noise dominates only above ~10Hz - preserves sub-μA signal resolution in DC-coupled detection. |
| Long-Term Integrator | Medical Instrumentation Front-End |
Use Scenario: Building a 100-second time-constant integrator for leak-rate measurement in HVAC pressure decay testers. IC Role / Device Role / Timing Role: Precision integrator core using ultra-low bias current to minimize capacitor discharge error. Use Value: 40fA input bias introduces <0.15% error over 100s integration - outperforms bipolar op amps by >1000× in drift-limited applications. | Use Scenario: First-stage amplification in ECG lead-off detection circuits requiring >10GΩ input impedance and <1μVpp noise. IC Role / Device Role / Timing Role: Dual-channel buffer for right-leg drive and differential limb leads with matched DC performance. Use Value: Matched offset drift (±2.3μV/°C) and >130dB channel crosstalk ensure common-mode rejection stability across temperature. |
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 |
|---|---|---|---|
| TLC272CDR | Higher 10pA input bias current; 100dB gain into 2kΩ; 0.55V/μs slew rate | Limited to lower-impedance sensor interfaces; unsuitable for pA-level current measurement | Select when cost sensitivity outweighs ultra-low bias requirement and supply is ≥16V |
| OPA2182IDR | Zero-drift architecture; 0.02μV/°C drift; 5.7nV/√Hz noise; higher 550μA IQ | Superior DC precision but higher power; less tolerant of >100pF capacitive loads | Select for μV-level DC stability in battery-powered instrumentation where noise <10nV/√Hz is mandatory |
Compared with TLC272CDR, LMC6032IMX/NOPB provides 250× lower input bias current and 26dB higher open-loop gain - essential for femtoampere-level signal integrity. Versus OPA2182IDR, it trades zero-drift performance for lower power and proven capacitive-load robustness in legacy analog front-ends.
Availability
LMC6032IMX/NOPB is available at Aetrix Electronics and suitable for medical instrumentation, precision sensor interfaces, and industrial data acquisition systems requiring stable component supply across extended product lifecycles.
Supply support for LMC6032IMX/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, designing and manufacturing analog ICs, embedded processors, and digital logic for industrial, automotive, and consumer applications.
The LMC603x family was developed specifically for ultra-high-input-impedance, low-drift analog signal conditioning in battery-powered and single-supply instrumentation systems - emphasizing fA-level bias control and rail-to-rail input operation.
FAQ
What is the maximum capacitive load the LMC6032IMX/NOPB can drive without oscillation?
The LMC6032IMX/NOPB is stable with ≤100pF capacitive load in unity-gain follower configuration. For larger loads, TI recommends adding a 50Ω–100Ω series resistor at the output and a 5pF–10pF feedback capacitor from output to inverting input. This configuration enables stable operation with >1nF loads in non-inverting gain ≥10 configurations, as verified in SNOS609D Figure 6-3.
Does the LMC6032IMX/NOPB support true rail-to-rail output swing?
No - the LMC6032IMX/NOPB provides rail-to-rail *input* common-mode range (including V−), but its output swing is limited. At VS = 5V with 2kΩ load, output swings from 0.10V to 4.87V; at VS = 15V, it swings from 0.26V to 14.63V. Output headroom is ~0.25V from each rail under light loads, degrading slightly under 600Ω.
Can the LMC6032IMX/NOPB replace LM358 in existing PCB layouts?
Yes - the LMC6032IMX/NOPB is pin-compatible with LM358 in SOIC-8 packages and shares identical pinout (Pin 1=OUT A, Pin 2=–IN A, Pin 3=+IN A, Pin 4=V−, Pin 5=+IN B, Pin 6=–IN B, Pin 7=OUT B, Pin 8=V+). However, verify supply voltage compatibility: LMC6032IMX/NOPB max is 15.5V, while LM358 supports up to 36V.
What is the minimum recommended supply voltage for LMC6032IMX/NOPB operation?
The LMC6032IMX/NOPB is specified for operation down to 4.75V single-supply or ±2.375V dual-supply per Section 5.3 of SNOS609D. Below 4.75V, open-loop gain, slew rate, and output swing degrade - e.g., at 4.5V, gain drops below 1000V/mV and output swing narrows to ~0.3V–4.2V with 2kΩ load.
How does the LMC6032IMX/NOPB handle input common-mode voltage near the positive rail?
At TA = 25°C and VS = 15V, the LMC6032IMX/NOPB input common-mode range extends to (V+) – 1.9V (i.e., up to 13.1V). Performance degrades near this limit: input bias current increases exponentially, and CMRR falls below 50dB. For reliable operation, keep VCM ≤ (V+) – 2.3V across –40°C to +85°C per Table 5-6.
LMC6032IMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
LMC6032IMX/NOPB FAQ
1.How can I place an order for LMC6032IMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6032IMX/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 LMC6032IMX/NOPB reliable?
The price and inventory of LMC6032IMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6032IMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6032IMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6032IMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6032IMX/NOPB?
LMC6032IMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6032IMX/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 LMC6032IMX/NOPB?
For technical support, including LMC6032IMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6032IMX/NOPB requirements.
6.How does Aetrix verify that LMC6032IMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6032IMX/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 LMC6032IMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6032IMX/NOPB?
All LMC6032IMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6032IMX/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 LMC6032IMX/NOPB part is unused and in its original packaging.
Return procedure for LMC6032IMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC6032IMX/NOPB Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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