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Texas Instruments LMC7111BIN
- Part No.:
- LMC7111BIN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LMC7111BIN.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,845
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Product details
Overview
LMC7111BIN from Texas Instruments is a micropower CMOS operational amplifier in a 5-pin SOT-23 package, featuring rail-to-rail input and output, 50 kHz gain-bandwidth at 5 V, 25 µA typical supply current, and output swing to within 20 mV of the supply rails under 100 kΩ load - ideal for battery-monitoring circuits and portable sensor interfaces.
For engineers reviewing the LMC7111BIN datasheet, LMC7111BIN pinout, LMC7111BIN application, or LMC7111BIN equivalent, key selection criteria include ultra-low quiescent current, wide common-mode input range extending beyond V+, rail-to-rail output capability, and verified capacitive load drive up to 300 pF - all critical for space-constrained, single-supply, low-power analog signal conditioning.
Technical Context
The LMC7111BIN employs a CMOS input stage enabling femtoampere-level input bias current (±0.1 pA typ) and >10 TΩ input resistance, supporting high-impedance sensor interfacing without signal degradation. Its rail-to-rail input extends to 300 mV beyond either supply rail, eliminating phase inversion and enabling accurate sensing of signals exceeding V+ in battery-voltage monitoring.
Internally compensated for unity-gain stability, the device delivers 50 kHz GBW at 5 V with 0.027 V/µs slew rate and maintains stable operation driving up to 300 pF capacitive loads - confirmed via phase margin ≥50° and gain margin ≥15 dB at 10 V - making it suitable for reference buffering and GaAs RF amplifier biasing without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 11 V - supports direct integration into Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Quiescent Current | 25 µA typ at 5 V - enables multi-year battery life in always-on portable instrumentation. |
| Gain-Bandwidth Product | 50 kHz at 5 V - sufficient for DC-coupled sensor amplification and low-frequency filtering (e.g., <10 kHz bio-signal conditioning). |
| Input Offset Voltage | ±0.9 mV max at 25°C - ensures sub-mV accuracy in precision current-sensing and voltage-reference buffering. |
| Output Swing | To within 20 mV of rails at 100 kΩ load - allows full utilization of ADC reference range and complete transistor saturation control. |
| Input Bias Current | ±0.1 pA typ - preserves signal integrity when interfacing with high-Z sources like photodiodes or pH electrodes. |
| Common-Mode Input Range | Extends 300 mV beyond V− and to V+ - enables direct measurement of battery cell voltages above supply rail in stacked configurations. |
Pinout & Package
LMC7111BIN is housed in a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 2.8 mm with 1.43 mm height - optimized for minimal PCB footprint and thin-profile portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking up to 7 mA (typ) into resistive loads. |
| 2 - V+ | Positive supply | Accepts 2.5–11 V single supply or +2.5–+5.5 V in split-supply mode; powers internal CMOS circuitry. |
| 3 - +IN | Noninverting input | High-impedance CMOS node (RIN > 10 TΩ); accepts common-mode voltages up to V+ + 0.3 V. |
| 4 - −IN | Inverting input | Matches +IN in impedance and voltage range; enables standard op-amp configurations (e.g., inverting amp, transimpedance). |
| 5 - V− | Negative supply / ground | Reference for single-supply operation (0 V) or negative rail in dual-supply; supports rail-to-rail input down to V− − 0.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply systems - e.g., 0–3.3 V ADC reference buffering without headroom loss. |
| 25 µA quiescent current | Reduces system power budget by >90% vs. standard rail-to-rail op-amps, extending runtime in coin-cell-powered wearables. |
| 300 pF capacitive load drive | Eliminates need for isolation resistors when driving ADC inputs or multiplexer channels - simplifies layout and improves settling time. |
| Input common-mode range beyond V+ | Permits direct sensing of battery voltages > VDD in fuel gauging applications without external attenuators or charge pumps. |
| 0.1 pA input bias current | Maintains accuracy with megaohm-level source impedances - critical for thermistor networks and electrochemical sensor front-ends. |
Applications
| Battery Voltage Monitoring | Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring individual cell voltage in multi-cell Li-ion packs where cell voltage exceeds microcontroller VDD. IC Role / Device Role / Timing Role: Precision buffer and level translator that accepts input up to V+ + 0.3 V while delivering rail-to-rail output to MCU ADC. Use Value: Eliminates external resistor dividers and associated power loss/error, improving measurement accuracy and reducing BOM count. |
Use Scenario: Amplifying weak signals from high-impedance pH electrodes or photodiodes in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, low-drift transimpedance or noninverting amplifier with femtoampere input bias. Use Value: Preserves signal fidelity without loading sensitive transducers - enabling sub-mV resolution in 16-bit ADC systems. |
| ADC Reference Buffering | GaAs RF Amplifier Biasing |
Use Scenario: Isolating and stabilizing voltage references (e.g., LM4040) feeding SAR or delta-sigma ADCs in data loggers. IC Role / Device Role / Timing Role: Unity-gain follower with low output impedance and 20 mV rail-to-rail swing to maintain reference accuracy under load. Use Value: Prevents reference droop during ADC conversion cycles, ensuring consistent LSB weight and minimizing integral nonlinearity. |
Use Scenario: Providing stable, low-noise negative gate bias to GaAs FETs in portable RF front-ends (e.g., GPS receivers). IC Role / Device Role / Timing Role: Low-current, low-noise op-amp configured as precision current sink with rail-to-rail control. Use Value: Enables precise bias point setting without thermal drift or supply sensitivity - critical for maintaining RF gain flatness and noise figure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6462IMX/NOPB | Dual-channel, 55 kHz GBW, ±0.25 mV max VOS, 45 µA IQ per channel | Higher channel density but higher power; requires dual layout vs. discrete placement flexibility of LMC7111BIN | Select when dual amplifiers are needed on same board and space permits larger SOIC-8 footprint. |
| LMC7101IM5X/NOPB | Single-channel, 1.5 MHz GBW, 120 µA IQ, 0.4 V/µs SR, ±0.15 mV max VOS | Higher speed and lower offset, but 5× higher supply current and reduced rail-to-rail input margin | Select when faster settling (<1 µs) or tighter offset specs are required, and battery life is secondary to performance. |
Compared with LMC6462IMX/NOPB and LMC7101IM5X/NOPB, the LMC7111BIN uniquely balances ultra-low power (25 µA), true rail-to-rail input beyond V+, and SOT-23 size - making it optimal for distributed, single-amplifier placements in space- and energy-constrained portable electronics.
Availability
LMC7111BIN is available at Aetrix Electronics and suitable for battery monitoring, portable sensor interfaces, ADC reference buffering, and GaAs RF biasing requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for LMC7111BIN 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 90 years of innovation in precision analog ICs and power management solutions.
The LMC7111BIN belongs to TI's LMC71xx family of micropower CMOS op-amps designed specifically for space- and energy-constrained portable electronics - emphasizing ultra-low IQ, rail-to-rail operation, and robust capacitive load drive in miniature packages.
FAQ
What is the maximum supply voltage for LMC7111BIN?
The LMC7111BIN supports a supply voltage range of 2.5 V to 11 V, with absolute maximum rating of 11 V for VS = V+ – V−. Operation above 11 V risks permanent damage. At 10 V supply, the device delivers 50 kHz GBW, 0.03 V/µs slew rate, and rail-to-rail output swing to within 20 mV of rails under 100 kΩ load - confirming robust high-voltage operation within spec.
Does LMC7111BIN support rail-to-rail input beyond the positive supply rail?
Yes, the LMC7111BIN features an extended common-mode input range that reaches up to V+ + 0.3 V at room temperature, enabling direct sensing of signals exceeding the positive supply - such as individual cell voltages in multi-cell battery packs. This eliminates need for external level-shifting circuitry and preserves accuracy in battery fuel gauging applications using the LMC7111BIN.
Can LMC7111BIN drive a 300 pF capacitive load without oscillation?
Yes, the LMC7111BIN is characterized to directly drive up to 300 pF capacitive loads at unity gain with VS = 10 V while maintaining ≥50° phase margin and ≥15 dB gain margin - verified in TI's SNOS753F datasheet Figure 5-42 through 5-44. This capability allows direct connection to ADC inputs and multiplexers without series isolation resistors, simplifying design and improving transient response in systems using the LMC7111BIN.
What is the typical input bias current of LMC7111BIN?
The LMC7111BIN exhibits a typical input bias current of ±0.1 pA at 25°C, with a maximum of ±20 pA over –40°C to +85°C. This femtoampere-level bias enables high-fidelity interfacing with megaohm- and gigaohm-range sensors - including photodiodes, thermistors, and electrochemical cells - without introducing measurable error in the LMC7111BIN's signal path.
Is LMC7111BIN pin-compatible with other SOT-23 op-amps like LMC7101?
No, the LMC7111BIN is not pin-compatible with LMC7101IM5X/NOPB: both use SOT-23-5 packages but assign different functions to Pin 1 (LMC7111BIN = OUT, LMC7101 = OUT) and Pin 5 (LMC7111BIN = V−, LMC7101 = V−), yet differ in internal compensation and output stage design - requiring PCB layout revision. The LMC7111BIN's unique combination of ultra-low IQ and extended input range makes direct substitution infeasible without validation.
LMC7111BIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 50 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 25µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LMC7111BIN FAQ
1.How can I place an order for LMC7111BIN through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7111BIN 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 LMC7111BIN reliable?
The price and inventory of LMC7111BIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7111BIN is usually 5 days.
3.What payment methods are accepted for LMC7111BIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7111BIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7111BIN?
LMC7111BIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7111BIN 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 LMC7111BIN?
For technical support, including LMC7111BIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7111BIN requirements.
6.How does Aetrix verify that LMC7111BIN is sourced from the original manufacturer or authorized distributors?
All LMC7111BIN 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 LMC7111BIN meets industry standards.
7.What is the process for return or replacement of LMC7111BIN?
All LMC7111BIN units undergo pre-shipment inspection (PSI). If there is an issue with LMC7111BIN, 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 LMC7111BIN part is unused and in its original packaging.
Return procedure for LMC7111BIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC7111BIN 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
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LM2904DGKR
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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
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LM358P
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