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Texas Instruments LMC7111BIM5X
- Part No.:
- LMC7111BIM5X
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7111BIM5X.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,567
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Product details
Overview
LMC7111BIM5X from Texas Instruments is a micropower CMOS operational amplifier in a 5-pin SOT-23 (DBV) package, featuring rail-to-rail input and output, 25 µA typical supply current at 5 V, 50 kHz gain-bandwidth, and output swing within 20 mV of rails at 100 kΩ load-used for voltage reference buffering and GaAs RF amplifier biasing in portable electronics.
For engineers reviewing the LMC7111BIM5X datasheet, LMC7111BIM5X pinout, LMC7111BIM5X application, or LMC7111BIM5X equivalent, key selection considerations include ultra-low quiescent current, wide supply range (2.7 V to 10 V), rail-to-rail operation, high input impedance (>10 TΩ), and verified capacitive load drive up to 300 pF without oscillation.
Technical Context
The LMC7111BIM5X employs a CMOS input stage enabling picoampere-level input bias current (±0.1 pA typ) and rail-to-rail common-mode input range extending 300 mV beyond either supply rail. Its output stage delivers true rail-to-rail swing with <20 mV headroom at light loads and maintains stability driving ≥300 pF capacitive loads at unity gain.
It operates across a 2.7 V–10 V single-supply range, with specified performance at 2.7 V, 5 V, and 10 V-including PSRR >60 dB, CMRR >60 dB, and input offset voltage ±0.9 mV (typ) -making it suitable for battery-monitoring circuits where input signals exceed V+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V single supply - supports direct integration into Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Quiescent Current | 25 µA typical at 5 V - enables multi-year battery life in always-on sensor nodes and portable devices. |
| Gain-Bandwidth Product | 50 kHz at 5 V - sufficient for DC-coupled signal conditioning, reference buffering, and low-frequency feedback loops. |
| Input Offset Voltage | ±0.9 mV typical - ensures ≤0.018% error in 5 V full-scale reference buffering applications. |
| Output Swing (100 kΩ) | Within 20 mV of both rails - allows full utilization of ADC reference range and complete transistor saturation in bias circuits. |
| Input Bias Current | ±0.1 pA typical - minimizes voltage error across high-impedance sources like photodiodes and precision voltage dividers. |
| Common-Mode Input Range | Extends 300 mV beyond V− and V+ - enables direct sensing of battery voltages above supply rail in fuel gauging. |
Pinout & Package
SOT-23 (DBV) 5-pin surface-mount package, 2.9 mm × 2.8 mm footprint, 1.43 mm height - optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ≥5 mA and driving ≥300 pF stable. |
| 2 (V+) | Positive supply | Accepts 2.7–10 V single supply; connects to main system rail or regulated bias source. |
| 3 (+IN) | Noninverting input | CMOS input with >10 TΩ impedance; accepts signals up to 300 mV beyond V+ or V−. |
| 4 (−IN) | Inverting input | Matches +IN in impedance and common-mode range; used for feedback and differential configurations. |
| 5 (V−) | Negative supply / ground | Reference node for single-supply operation; supports true rail-to-rail input down to V−. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply systems - e.g., buffers 0–5 V references without clipping. |
| 25 µA quiescent current | Reduces power budget impact in battery-powered designs - extends runtime by >3× vs. standard op-amps. |
| 300 pF capacitive load drive | Eliminates need for external isolation resistors when driving ADC inputs or multiplexer channels. |
| ±0.1 pA input bias current | Preserves accuracy in high-Z sensor interfaces - avoids µV-level errors from leakage across MΩ-scale resistors. |
| Wide 2.7–10 V supply range | Supports direct use across multiple battery chemistries (Li-ion, NiMH, alkaline) without regulator redesign. |
Applications
| Battery Voltage Monitoring | Voltage Reference Buffering |
|---|---|
Use Scenario: Monitoring cell voltage in multi-cell Li-ion packs where individual cell voltage exceeds system VDD. IC Role / Device Role / Timing Role: Precision comparator front-end amplifier with extended common-mode range beyond V+. Use Value: Enables accurate measurement without external level-shifting circuitry - reduces BOM count and layout area. | Use Scenario: Isolating and driving the reference input of a dual-slope integrating ADC in portable medical devices. IC Role / Device Role / Timing Role: Low-drift, low-noise unity-gain buffer with rail-to-rail output swing. Use Value: Maintains reference integrity under varying load conditions while consuming <25 µA - critical for long-term calibration stability. |
| GaAs RF Amplifier Bias | Current Sensing in Battery Chargers |
Use Scenario: Providing stable negative gate bias to GaAs FETs in cellular front-end modules. IC Role / Device Role / Timing Role: Low-noise, low-current op-amp configured as precision current sink. Use Value: Delivers sub-mV bias stability over temperature and supply variation - improves RF linearity and PAE. | Use Scenario: Amplifying mV-level shunt voltage in switched-mode battery chargers for coulomb counting. IC Role / Device Role / Timing Role: High-input-impedance, low-offset amplifier in current-sense path. Use Value: Achieves <0.1% gain error with ±0.9 mV VOS and negligible input current - ensures accurate charge termination. |
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. single-point placement | Select when dual amplifiers are needed on same board and tighter offset spec is required. |
| LMC7101AIM5X/NOPB | Single-channel, 110 kHz GBW, ±0.5 mV max VOS, 80 µA IQ | Faster response and lower offset, but 3.2× higher supply current | Select when higher bandwidth or lower offset is prioritized over battery life in reference buffering. |
Compared with LMC6462IMX/NOPB and LMC7101AIM5X/NOPB, the LMC7111BIM5X offers the lowest quiescent current and smallest footprint for single-amplifier functions - making it optimal for ultra-low-power, space-constrained placements where 50 kHz bandwidth suffices.
Availability
LMC7111BIM5X is available at Aetrix Electronics and suitable for portable computing, mobile communications, and battery management systems requiring stable component supply and long-lifecycle support.
Supply support for LMC7111BIM5X 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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and low-power design.
The LMC7111BIM5X belongs to TI's LMC71xx family of micropower CMOS op-amps engineered for space- and energy-constrained applications including portable instrumentation, battery monitoring, and sensor signal conditioning.
FAQ
What is the maximum supply voltage rating for the LMC7111BIM5X?
The LMC7111BIM5X has an absolute maximum supply voltage (VS = V+ − V−) of 11 V. Recommended operating range is 2.5 V to 11 V, with full electrical specifications guaranteed from 2.7 V to 10 V. Exceeding 11 V risks permanent damage per Absolute Maximum Ratings in the LMC7111BIM5X datasheet.
Does the LMC7111BIM5X support rail-to-rail input beyond the supply rails?
Yes - the LMC7111BIM5X accepts input voltages up to 300 mV beyond either supply rail (V+ or V−) without phase inversion or latch-up. This capability is explicitly characterized and validated in the LMC7111BIM5X datasheet, enabling direct battery-voltage sensing above VDD in monitoring circuits.
What is the typical output swing of the LMC7111BIM5X at 5 V supply with a 100 kΩ load?
At 5 V supply and 100 kΩ load, the LMC7111BIM5X delivers output swing to within 10 mV of V+ (4.99 V) and within 20 mV of V− (0.02 V), per Electrical Characteristics Table 5.6 in the LMC7111BIM5X datasheet. This rail-to-rail performance ensures full utilization of reference and ADC input ranges.
Can the LMC7111BIM5X drive a 300 pF capacitive load stably?
Yes - the LMC7111BIM5X is characterized to drive ≥300 pF capacitive loads at unity gain without oscillation at 10 V supply, as confirmed in Section 7.1.1 and Figure 5-42 of the LMC7111BIM5X datasheet. No external compensation is required for this load condition in follower configuration.
What is the input bias current specification for the LMC7111BIM5X at room temperature?
The LMC7111BIM5X exhibits a typical input bias current of ±0.1 pA at 25°C, with a maximum of ±1 pA (25°C) and ±20 pA over –40°C to +85°C, per Tables 5.5–5.7 in the LMC7111BIM5X datasheet. This ultra-low value results from its CMOS input architecture and enables high-impedance sensor interfacing.
LMC7111BIM5X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMC7111BIM5X FAQ
1.How can I place an order for LMC7111BIM5X through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7111BIM5X 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 LMC7111BIM5X reliable?
The price and inventory of LMC7111BIM5X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7111BIM5X is usually 5 days.
3.What payment methods are accepted for LMC7111BIM5X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7111BIM5X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7111BIM5X?
LMC7111BIM5X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7111BIM5X 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 LMC7111BIM5X?
For technical support, including LMC7111BIM5X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7111BIM5X requirements.
6.How does Aetrix verify that LMC7111BIM5X is sourced from the original manufacturer or authorized distributors?
All LMC7111BIM5X 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 LMC7111BIM5X meets industry standards.
7.What is the process for return or replacement of LMC7111BIM5X?
All LMC7111BIM5X units undergo pre-shipment inspection (PSI). If there is an issue with LMC7111BIM5X, 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 LMC7111BIM5X part is unused and in its original packaging.
Return procedure for LMC7111BIM5X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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