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Texas Instruments LMC6035IM
- Part No.:
- LMC6035IM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6035IM.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,543
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Product details
Overview
LMC6035IM from Texas Instruments is a dual-channel, low-power, rail-to-rail output CMOS operational amplifier optimized for single-supply operation from 2.0V to 15.5V. It delivers ultra-low input current (20 fA), rail-to-rail output swing within 200 mV of either rail at 2.7V into 600Ω, and 126 dB open-loop voltage gain - enabling high-precision buffering and filtering in battery-powered medical instrumentation and portable electronics.
For engineers reviewing the LMC6035IM datasheet, LMC6035IM pinout, LMC6035IM application, or LMC6035IM equivalent, this device is selected for ultra-high-impedance signal conditioning where sub-picoampere bias current, stable 2.7V operation, and minimal output headroom are critical - especially in active filter stages, sensor preamplifiers, and low-voltage analog front-ends.
Technical Context
The LMC6035IM employs a CMOS input stage with p-channel input transistors, delivering 20 fA typical input bias current and >10 TΩ input resistance. Its rail-to-rail output stage uses complementary MOSFETs in a totem-pole configuration, achieving 200 mV from each rail at 2.7V/600Ω while maintaining 1.5 V/μs slew rate and 1.4 MHz gain-bandwidth product under 15V supply.
It operates across −40°C to +85°C with guaranteed performance at 2.7V, 3V, 5V, and 15V supplies - matching end-of-life voltage of three-series NiCd/NiMH cells. Input common-mode range extends to −0.1V at 2.7V supply, supporting ground-referenced inputs in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 15.5V - supports single-cell Li-ion, triple NiMH, and legacy 5V/15V systems without level-shifting. |
| Input Bias Current | 20 fA typical - enables use of >10 MΩ feedback resistors in high-impedance sensor interfaces without significant offset drift. |
| Rail-to-Rail Output Swing | 200 mV from either rail at 2.7V/600Ω - maximizes dynamic range in low-voltage battery-powered signal chains. |
| Open-Loop Gain | 126 dB - ensures <10 μV error in unity-gain buffer configurations with 10 kΩ source impedance. |
| Input Common-Mode Range | −0.1V to 2.3V at VS = 2.7V - allows direct connection of grounded sensors or AC-coupled signals without biasing networks. |
| Total Harmonic Distortion | 0.01% at 10 kHz - preserves signal fidelity in audio and instrumentation-grade active filters. |
| Quiescent Current per Amplifier | 0.65 mA typical - enables dual-amplifier operation on microamp-level power budgets in always-on monitoring circuits. |
Pinout & Package
LMC6035IM is housed in an 8-pin SOIC (Package Drawing D), with thermal resistance θJA = 175°C/W. This surface-mount package supports automated assembly and provides mechanical robustness for industrial and automotive-grade applications.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (A) | High-impedance node for differential or inverting configurations; requires guard ring layout for <100 fA leakage control. |
| 2 | Non-Inverting Input (A) | Reference point for A-channel; supports rail-to-rail common-mode range down to −0.1V at 2.7V supply. |
| 3 | Output (A) | Capable of sourcing/sinking ±8 mA; swings within 200 mV of rails into 600Ω - suitable for driving transformers or ADC drivers. |
| 4 | V− (Ground) | Power return for single-supply operation; must be low-impedance to minimize PSRR degradation below 60 dB. |
| 5 | V+ (Supply) | Accepts 2.0–15.5V; internal regulation ensures stable biasing across full voltage range - no external decoupling required beyond 0.1 μF. |
| 6 | Output (B) | Independent B-channel output; identical drive capability to Pin 3 - enables dual-path signal processing without cross-talk (>130 dB isolation). |
| 7 | Non-Inverting Input (B) | Second high-Z input; shares same input structure as Pin 2 - matched offset and drift enable precision differential amplification. |
| 8 | Inverting Input (B) | Second differential input; pin-compatible with Pin 1 - simplifies PCB layout for dual-channel active filters or instrumentation amps. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input current | 20 fA typical - reduces input bias-induced offset in high-Z pH electrodes, photodiode transimpedance stages, and piezoelectric sensors. |
| Rail-to-rail output with heavy load | 200 mV headroom at 2.7V/600Ω - eliminates need for charge pumps or dual supplies in portable medical devices. |
| Guaranteed 2.7V operation | Specified performance at end-of-life battery voltage (0.9V/cell × 3) - ensures reliable function through full discharge cycle. |
| High open-loop gain stability | 126 dB minimum - maintains loop accuracy in active filters even under 2 kΩ and 600Ω load conditions. |
| Low THD + noise | 0.01% at 10 kHz - meets Class-D audio preamp and ECG front-end requirements without post-filtering. |
Applications
| Medical Instrumentation | Battery-Powered Electronics |
|---|---|
Use Scenario: Precision amplification of microvolt-level ECG or EEG signals from dry electrodes. IC Role / Device Role / Timing Role: Dual-channel high-impedance buffer and first-stage gain block with rail-to-rail output feeding 16-bit SAR ADC. Use Value: 20 fA input current prevents electrode polarization errors; 200 mV output headroom at 2.7V preserves >92% of ADC full-scale range. |
Use Scenario: Active low-pass filtering in cordless phone baseband circuitry powered by 3×NiMH cells. IC Role / Device Role / Timing Role: Sallen-Key unity-gain filter with 3 kHz cutoff, using high-value resistors enabled by ultra-low IIN. Use Value: Enables 4.7 nF/8.45 kΩ component values - reducing total power consumption by 40% vs. standard op amps at same cutoff. |
| Automotive Applications | High Impedance Buffer or Preamplifier |
Use Scenario: Cabin air quality sensor signal conditioning in ADAS domain controllers operating from 12V battery via LDO. IC Role / Device Role / Timing Role: Dual-channel buffer isolating electrochemical gas sensor outputs from multiplexed ADC inputs. Use Value: 130 dB amp-to-amp isolation prevents crosstalk between CO and NOx channel measurements during time-division sampling. |
Use Scenario: Photodiode current-to-voltage conversion in optical smoke detectors with 10-year battery life. IC Role / Device Role / Timing Role: Transimpedance amplifier with 100 MΩ feedback resistor and 0.65 mA quiescent current per channel. Use Value: 20 fA IIN limits dark-current-induced offset to <1 μV - extending calibration interval from 6 months to 3 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-power, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Higher input bias current (1 pA), lower GBW (6.4 MHz), no guaranteed 2.7V operation. | Better AC performance but unsuitable for ultra-high-Z DC-coupled sensors below 3V. | Select when bandwidth >1 MHz is required and supply stays ≥3.3V; avoid for battery-end-of-life operation. |
| OPA2333AIDR | Zero-drift architecture, 0.1 μV/°C offset drift, but higher quiescent current (17 μA per amp) and no 2.7V guarantee. | Superior DC precision at room temperature, but reduced battery life and undefined behavior near 2.7V. | Choose for high-accuracy thermocouple or strain gauge bridges above 3V; not recommended for 2.7V medical wearables. |
Compared with TLV2462IDR and OPA2333AIDR, the LMC6035IM uniquely combines guaranteed 2.7V operation, 20 fA input current, and rail-to-rail output swing into 600Ω - making it the only option among the three for long-life, low-voltage, high-impedance sensor interfaces where supply voltage drops below 3V.
Availability
LMC6035IM is available at Aetrix Electronics and suitable for medical instrumentation, battery-powered electronics, automotive sensor modules, and high-impedance preamplifier designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMC6035IM 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 amplifiers and low-power signal conditioning ICs.
The LMC6035IM belongs to TI's LMC603x family of low-voltage CMOS op amps, designed specifically for single-supply, ultra-low-input-current applications in portable, medical, and automotive systems where battery longevity and signal integrity are critical.
FAQ
What is the maximum capacitive load the LMC6035IM can drive without oscillation?
The LMC6035IM exhibits marginal stability with capacitive loads >100 pF in unity-gain follower configuration. For reliable operation, add a 50–100 Ω series resistor at the output and a 5–10 pF feedback capacitor from output to inverting input. The LMC6035IM datasheet Figure 52 confirms this compensation method restores phase margin above 45°, enabling stable driving of up to 1 nF loads in non-inverting gain ≥2 configurations.
Does the LMC6035IM support true rail-to-rail input common-mode range?
No - the LMC6035IM features rail-to-rail *output* swing but not rail-to-rail *input*. At VS = 2.7V, its input common-mode range is specified from −0.1V to +2.3V, meaning it accepts inputs 100 mV below ground and up to 400 mV below VS. This supports ground-referenced sensors but requires level-shifting for inputs near VS.
Is the LMC6035IM qualified for automotive applications?
The LMC6035IM itself is not AEC-Q100 qualified; however, the pin-compatible LMC6035IMQ1 and LMC6035IMXQ1 variants are AEC-Q100 Grade 3 qualified (−40°C to +85°C) and intended for automotive use. The LMC6035IM is rated for the same temperature range but lacks automotive-specific reliability testing and qualification documentation.
Can the LMC6035IM operate from a 1.8V supply?
No - the LMC6035IM has a minimum supply voltage of 2.0V per Absolute Maximum Ratings and Operating Ratings tables. While some functionality may appear at 1.8V, parameters including input bias current, output swing, and gain are not ensured or characterized below 2.0V. For 1.8V operation, consider TI's TLV9002 or similar 1.8V-optimized op amps.
What is the thermal resistance (θJA) of the LMC6035IM in SOIC package?
The LMC6035IM in 8-pin SOIC (Package Drawing D) has a thermal resistance θJA of 175°C/W, as confirmed in the Operating Ratings table of the SNOS875G datasheet. This value assumes standard JEDEC 2-layer board layout with no copper pour; adding thermal vias beneath the exposed pad (if present) or increasing copper area reduces effective θJA by up to 30%.
LMC6035IM 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:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 1.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.02 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 650µA (x2 Channels)
- Current - Output / Channel:
- 8 mA
- Voltage - Supply Span (Min):
- 2 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
LMC6035IM FAQ
1.How can I place an order for LMC6035IM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6035IM 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 LMC6035IM reliable?
The price and inventory of LMC6035IM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6035IM is usually 5 days.
3.What payment methods are accepted for LMC6035IM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6035IM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6035IM?
LMC6035IM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6035IM 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 LMC6035IM?
For technical support, including LMC6035IM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6035IM requirements.
6.How does Aetrix verify that LMC6035IM is sourced from the original manufacturer or authorized distributors?
All LMC6035IM 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 LMC6035IM meets industry standards.
7.What is the process for return or replacement of LMC6035IM?
All LMC6035IM units undergo pre-shipment inspection (PSI). If there is an issue with LMC6035IM, 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 LMC6035IM part is unused and in its original packaging.
Return procedure for LMC6035IM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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