Texas Instruments LMC8101MMX

Overview

LMC8101MMX from Texas Instruments is a rail-to-rail input and output CMOS operational amplifier optimized for low-voltage (2.7V–10V) battery-powered systems, delivering ±5 mV max offset voltage, 1 MHz gain-bandwidth product, and 36 nV/√Hz input voltage noise. It features integrated shutdown control with 10 µs turn-on time and operates across −40°C to +85°C in an 8-pin VSSOP package.

For engineers reviewing the LMC8101MMX datasheet, LMC8101MMX pinout, LMC8101MMX application, or LMC8101MMX equivalent, this device supports precision signal conditioning in space-constrained portable electronics where rail-to-rail swing, sub-1 mA supply current, and fast shutdown recovery are critical design requirements.

Technical Context

The LMC8101MMX implements a CMOS input stage enabling rail-to-rail common-mode input range and rail-to-rail output swing within 35 mV of either supply rail at 2 kΩ load. Its shutdown architecture uses dual control pins (SD and SL) to allow threshold referencing to either V+ or V−, with built-in hysteresis preventing chatter during transition.

It achieves 1 MHz unity-gain bandwidth with 0.8 V/µs slew rate under 2.7V single-supply operation and maintains 78 dB CMRR over full input common-mode range. The device draws only 0.7 mA typical supply current in active mode and drops to 1 µA max in shutdown, with tri-stated output during disable.

Key Specifications

Pinout & Package

LMC8101MMX is housed in an 8-pin VSSOP package (DGK drawing), measuring 3.0 mm × 4.9 mm with 0.65 mm lead pitch. This surface-mount package supports automated assembly and offers thermal resistance θJA = 230°C/W on standard PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar rail-to-rail op amp applications.

Compared with LMC8101MMX, LMV321IDBVR trades shutdown functionality and rail-to-rail output swing for lower quiescent current, while TLV2461CDR offers higher bandwidth at the cost of increased external component count for shutdown control and relaxed DC accuracy.

Availability

LMC8101MMX is available at Aetrix Electronics and suitable for portable communication, battery sensing, and VCO loop filter applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LMC8101MMX 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 amplifiers and power management ICs.

The LMC8101MMX belongs to TI's precision rail-to-rail op amp product line, engineered for low-voltage portable instrumentation, battery-powered sensors, and space-constrained signal chains demanding high DC accuracy and fast power-state transitions.

FAQ

What is the maximum supply voltage for LMC8101MMX?

The absolute maximum supply voltage (V+ − V−) for LMC8101MMX is 12V, but its specified operating range is 2.7V to 10V. Operation above 10V may cause parametric degradation or reliability risk, and TI does not guarantee performance beyond the 10V upper limit stated in the Electrical Characteristics table. Always observe derating guidelines for thermal management at elevated voltages.

Does LMC8101MMX support true single-supply operation?

Yes, LMC8101MMX supports true single-supply operation from 2.7V to 10V with rail-to-rail input and output swing. Its input common-mode range extends from V− − 0.1V to V+ + 0.1V, and output can swing within 35 mV of both rails into 2 kΩ, enabling full dynamic range utilization without dual supplies in applications like battery voltage monitoring and audio line drivers.

How does the shutdown feature work on LMC8101MMX?

The LMC8101MMX uses two dedicated pins-SD (shutdown) and SL (shutdown level select)-to implement configurable shutdown. When SL is tied to V−, SD referenced to V− triggers shutdown if SD < ~1V; when SL is tied to V+, SD referenced to V+ triggers shutdown if SD > ~V+ − 1V. Hysteresis prevents chatter, and turn-on time is ≤15 µs. During shutdown, supply current drops to ≤1 µA and output is tri-stated.

What package type is used for LMC8101MMX?

LMC8101MMX is supplied in an 8-pin VSSOP package (TI package drawing DGK), measuring 3.0 mm × 4.9 mm with 0.65 mm lead pitch. This RoHS-compliant, green (halogen-free) package has CU SN lead finish and meets JEDEC Level-1 moisture sensitivity. It is distinct from the DSBGA variant (LMC8101TPX/NOPB) and is not pin-compatible with SOT-23 footprints without adapter.

Is LMC8101MMX suitable for driving capacitive loads?

LMC8101MMX can drive capacitive loads up to ~8200 pF with 5 kΩ resistive load (AV = +10), but stability improves with higher resistive loading, isolation resistors, or increased closed-loop gain. For purely capacitive loads >300 pF, TI recommends adding a 100 Ω isolation resistor between output and load to prevent oscillation-especially critical in active filter and ADC driver applications where LMC8101MMX is commonly deployed.