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Texas Instruments LMC6034IM/NOPB
- Part No.:
- LMC6034IM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6034IM/NOPB.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,482
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Product details
Overview
LMC6034IM/NOPB from Texas Instruments is a quad CMOS operational amplifier optimized for ultra-high-impedance, low-drift signal conditioning in single- or dual-supply systems. It delivers 126dB open-loop gain into 2kΩ loads, 40fA input bias current, 2.3μV/°C offset drift, and rail-to-rail output swing - enabling precision preamplification in medical instrumentation and sensor front-ends.
For engineers reviewing the LMC6034IM/NOPB datasheet, LMC6034IM/NOPB pinout, LMC6034IM/NOPB application, or LMC6034IM/NOPB equivalent, key selection criteria include guaranteed 600Ω load drive capability, sub-10μV typical input offset voltage, 1.1V/μs slew rate at ±7.5V, 22nV/√Hz input voltage noise, and compatibility with 4.75V–15.5V single-supply operation.
Technical Context
The LMC6034IM/NOPB employs a proprietary CMOS input stage with differential front-end architecture that extends the input common-mode range to V− (including ground) and supports rail-to-rail output swing even under 600Ω loads. Its high-voltage gain stability across temperature and supply voltage enables accurate DC-coupled amplification without external trimming.
Unlike conventional CMOS op amps, it integrates an additional gain stage for improved sinking capability and maintains >100V/mV open-loop gain into 600Ω loads at ±7.5V. The design avoids internal compensation limitations by specifying stable operation only with resistive loads ≥500Ω and recommending external RC compensation for capacitive loads >100pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | ±40fA typical - enables leakage-sensitive applications like picoampere-level current-to-voltage conversion without significant error. |
| Input Offset Voltage Drift | ±2.3μV/°C - ensures <±20μV total drift over –40°C to +85°C, critical for long-term integrators and precision DC amplifiers. |
| Open-Loop Gain | 2000V/mV into 2kΩ @ ±7.5V - provides >126dB loop gain for high-accuracy closed-loop configurations with feedback resistors up to 10MΩ. |
| Slew Rate | 1.1V/μs @ ±7.5V - supports 10kHz full-power bandwidth for 10Vpp signals, sufficient for medical ECG/EEG front-end buffering. |
| Supply Range | 4.75V–15.5V single supply or ±2.375V–±7.75V dual supply - allows direct interface with 5V microcontrollers and legacy ±5V analog subsystems. |
| Input Voltage Noise | 22nV/√Hz @ 1kHz - dominates noise floor in 10Hz–10kHz band for low-frequency biosignal amplification. |
| CMRR | 83dB @ 25°C - rejects common-mode interference from unshielded sensor cables in industrial or portable medical devices. |
Pinout & Package
LMC6034IM/NOPB is housed in a 14-pin SOIC (D package) with standard quad op amp pinout. The package measures 8.65mm × 3.91mm × 1.75mm and is rated for –40°C to +85°C operation.
| 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 routing in PCB layout to preserve 40fA bias current spec. |
| –IN A (Pin 2) | Inverting input, Channel A | Feedback node for transimpedance or inverting configurations; sensitive to stray capacitance above 2pF due to GBW = 1.4MHz. |
| OUT A (Pin 1) | Output, Channel A | Capable of sourcing/sinking ≥22mA into 2kΩ; must avoid direct connection to V+ when V+ >13V per reliability specification. |
| V+ (Pin 4) | Positive power supply | Accepts 4.75V–15.5V single supply or highest rail in dual supply; decoupling capacitor required within 1cm for stability. |
| V– (Pin 11) | Negative power supply | Connects to ground (single supply) or negative rail (dual supply); input common-mode range extends to this pin. |
| +IN B (Pin 5), –IN B (Pin 6), OUT B (Pin 7) | Channel B inputs/outputs | Electrically identical to Channel A; crosstalk >130dB at 1kHz enables independent signal paths in multi-channel systems. |
| +IN C (Pin 10), –IN C (Pin 9), OUT C (Pin 8) | Channel C inputs/outputs | Same performance as Channels A/B; pin spacing matches industry-standard SOIC-14 footprint for drop-in replacement in existing layouts. |
| +IN D (Pin 12), –IN D (Pin 13), OUT D (Pin 14) | Channel D inputs/outputs | Full quad functionality; all channels share same V+ and V– rails; no inter-channel supply interaction observed in testing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 40fA typical enables femtoampere-level current measurement in photodiode or ion-selective electrode interfaces without guard-ring complexity. |
| Rail-to-rail input common-mode range | Includes V− (ground) on single supply - eliminates level-shifting circuitry for sensors referenced to system ground, reducing component count. |
| Specified 600Ω load drive | Guaranteed 12.5V output swing into 600Ω @ ±7.5V - supports direct driving of ADC reference buffers or low-impedance transducers without external buffers. |
| Low quiescent current | 375μA per amplifier independent of V+ - allows battery-powered operation for >1 year in 4-channel portable diagnostic devices at 3.3V supply. |
| High PSRR | 83dB positive PSRR - suppresses ripple from switching regulators feeding V+, enabling clean analog signal chains in mixed-signal embedded systems. |
Applications
| High-Impedance Sensor Buffering | Current-to-Voltage Conversion |
|---|---|
Use Scenario: Amplifying output from glass pH electrode (100MΩ–1GΩ source impedance) in portable water quality analyzer. IC Role / Device Role / Timing Role: High-impedance buffer isolating electrode from downstream filtering and digitization stages. Use Value: 40fA input bias current prevents >10mV offset error at 250MΩ source impedance, preserving ±0.01 pH accuracy. |
Use Scenario: Converting photocurrent from avalanche photodiode (0.1–100nA range) in optical smoke detector. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10MΩ feedback resistor generating voltage proportional to incident light intensity. Use Value: 2.3μV/°C offset drift limits temperature-induced false alarms to <0.5% full-scale over –20°C to +60°C operating range. |
| Long-Term Integrator | Medical Instrumentation Front-End |
Use Scenario: Charge integration for ion chamber radiation dosimeter requiring 24-hour continuous accumulation. IC Role / Device Role / Timing Role: Precision integrator using LMC6034IM/NOPB in op-amp integrator topology with polypropylene capacitor. Use Value: Sub-10μV initial offset and 2.3μV/°C drift ensure <100μV integration error after 24h at 25°C, meeting IEC 61526 Class II requirements. |
Use Scenario: First-stage amplification in portable ECG monitor with dry electrodes and 0.05–150Hz bandwidth. IC Role / Device Role / Timing Role: Instrumentation amplifier input stage (using two LMC6034IM/NOPB channels) providing high CMRR and low noise. Use Value: 22nV/√Hz input voltage noise and >130dB channel-to-channel crosstalk enable 80dB SNR for 1mV cardiac signals at 50Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad CMOS operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L4CD | Lower input bias current (0.6pA vs 40fA), but higher offset drift (10μV/°C) and lower slew rate (0.035V/μs). | Not suitable for >10-second integrators or <100MΩ source impedances due to bias current and drift limitations. | Select TLC27L4CD only for cost-sensitive, low-bandwidth (<1kHz), room-temperature-stable applications where femtoampere bias is unnecessary. |
| OPA2333PWR | Zero-drift architecture achieves 0.02μV/°C drift and 25μV max offset, but input bias current is 200pA - 5× higher than LMC6034IM/NOPB. | Better for DC-critical applications like precision weight scales; worse for ultra-high-Z current sensing where bias current dominates error. | Choose OPA2333PWR when offset drift is the dominant error source and source impedance is ≤10MΩ; retain LMC6034IM/NOPB for >100MΩ sensor interfaces. |
Compared with TLC27L4CD, LMC6034IM/NOPB offers 15× lower input bias current and 4× faster slew rate, making it superior for high-impedance, wideband signal conditioning. Against OPA2333PWR, LMC6034IM/NOPB trades zero-drift performance for 5× lower bias current - a decisive advantage in photodiode or electrophysiology front-ends.
Availability
LMC6034IM/NOPB is available at Aetrix Electronics and suitable for medical diagnostics, environmental monitoring, and precision test equipment requiring stable component supply across extended product lifecycles.
Supply support for LMC6034IM/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 leader specializing in analog and embedded processing technologies, with over 50 years of innovation in precision analog ICs.
The LMC6034IM/NOPB belongs to TI's LMC603x family of CMOS op amps designed specifically for ultra-high-input-impedance, low-drift applications in medical, scientific, and industrial instrumentation.
FAQ
What is the maximum capacitive load the LMC6034IM/NOPB can drive without oscillation?
The LMC6034IM/NOPB is not characterized for direct capacitive load drive. Stability degrades significantly above 100pF, especially in unity-gain follower configuration. TI recommends adding a 50Ω–100Ω series resistor at the output and a 5pF–10pF feedback capacitor from output to inverting input to maintain phase margin. For loads >1nF, a pullup resistor to V+ (≥500μA current) is required to restore stability - verified in Section 6.1.3 of the SNOS609D datasheet.
Does the LMC6034IM/NOPB support true rail-to-rail output swing?
Yes, the LMC6034IM/NOPB delivers rail-to-rail output swing: at VS = 5V and RL = 2kΩ, it achieves 0.10V to 4.87V swing; at VS = 15V and RL = 2kΩ, it achieves 0.26V to 14.63V swing. This is confirmed in Table 5-6 "Voltage output swing" of the datasheet. However, swing is reduced under 600Ω loads - e.g., 0.30V to 4.61V at 5V - due to output stage compliance limits.
Can the LMC6034IM/NOPB operate from a single 3.3V supply?
No. The LMC6034IM/NOPB has a minimum recommended single-supply voltage of 4.75V per Section 5.3. Operation below this violates the specified operating conditions and risks degraded parameters including increased input offset voltage, reduced output swing, and unstable bias current. For 3.3V systems, consider TI's TLV2464 or OPA4340 as alternatives.
How does the LMC6034IM/NOPB compare to the LM358 in pin compatibility and performance?
The LMC6034IM/NOPB is pin-compatible with the LM358 in SOIC-14 packaging (though LM358 is dual-only), but differs electrically: LMC6034IM/NOPB offers 40fA vs 45nA input bias current (10⁶× improvement), 1.1V/μs vs 0.3V/μs slew rate, and 22nV/√Hz vs 40nV/√Hz noise. However, its supply range (4.75–15.5V) is narrower than LM358's (3–32V), limiting drop-in replacement in high-voltage designs.
Is the LMC6034IM/NOPB suitable for use in automotive applications?
The LMC6034IM/NOPB is not AEC-Q200 qualified and is specified only for –40°C to +85°C operation, which meets commercial/industrial but not automotive temperature requirements (–40°C to +125°C). TI offers automotive-grade alternatives like the TLV2464-Q1 (AEC-Q100 Grade 2) for under-hood applications requiring extended temperature operation and qualification.
LMC6034IM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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:
- 1.5mA (x4 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:
- 14-SOIC
LMC6034IM/NOPB FAQ
1.How can I place an order for LMC6034IM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6034IM/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 LMC6034IM/NOPB reliable?
The price and inventory of LMC6034IM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6034IM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6034IM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6034IM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6034IM/NOPB?
LMC6034IM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6034IM/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 LMC6034IM/NOPB?
For technical support, including LMC6034IM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6034IM/NOPB requirements.
6.How does Aetrix verify that LMC6034IM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6034IM/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 LMC6034IM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6034IM/NOPB?
All LMC6034IM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6034IM/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 LMC6034IM/NOPB part is unused and in its original packaging.
Return procedure for LMC6034IM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC6034IM/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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