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Texas Instruments LMC8101MM
- Part No.:
- LMC8101MM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMC8101MM.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,150
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Product details
Overview
LMC8101MM 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 1MHz gain-bandwidth, ±5mV max offset voltage, and 36nV/√Hz input voltage noise in an 8-pin VSSOP package. It integrates a user-configurable shutdown feature with 1µA max shutdown current and 10µs turn-on time, enabling power-sensitive applications such as cellular phone power amp control loops and portable data buffers.
For engineers reviewing the LMC8101MM datasheet, LMC8101MM pinout, LMC8101MM application, or LMC8101MM equivalent, key selection criteria include its rail-to-rail swing within 35mV of supplies (RL = 2kΩ), 1mA max supply current at 2.7V, shutdown threshold flexibility via SL pin referencing, THD of 0.18% at 1kHz, and compatibility with single- or split-supply operation across −40°C to +85°C.
Technical Context
The LMC8101MM implements a CMOS input stage with 10GΩ common-mode input resistance and 10pF input capacitance, supporting rail-to-rail input voltage range from −0.2V to 2.7V (at VS = 2.7V) and output swing to within 35mV of either rail under 2kΩ load. Its internal architecture includes a dedicated shutdown control path with hysteresis on the SD pin and selectable reference (V+ or V−) via the SL pin, enabling deterministic active/shutdown transitions without chatter.
It features a unity-gain-stable compensation scheme with 1MHz GBW and 1V/µs slew rate (AV = +1, RL = 10kΩ), optimized for driving moderate capacitive loads up to 8.2nF when combined with resistive output loading or isolation resistors. The device achieves 78dB CMRR and 57dB PSRR at 2.7V supply, with input offset drift of 4µV/°C and 1/f noise significantly lower than LMC7101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 10V - supports single-supply portable systems and dual-supply industrial signal conditioning without level-shifting. |
| Gain-Bandwidth Product | 1MHz - enables stable unity-gain buffer configurations and first-order active filters up to ~100kHz. |
| Input Offset Voltage | ±5mV max - ensures ≤10mV total error in precision DC-coupled sensing paths at room temperature. |
| Rail-to-Rail Output Swing | Within 35mV of V+ or V− (RL = 2kΩ) - maximizes dynamic range in low-voltage ADC driver or sensor interface stages. |
| Shutdown Current | 1µA max - extends battery life in intermittent-sampling systems by reducing quiescent draw by >1000×. |
| Voltage Noise Density | 36nV/√Hz at 10kHz - suitable for low-noise preamplification of microvolt-level signals in audio or instrumentation front-ends. |
| THD | 0.18% at 1kHz, 2.2Vpp, RL = 600Ω - meets fidelity requirements for voice-band analog signal routing in communication devices. |
Pinout & Package
The LMC8101MM is packaged in an 8-pin VSSOP (DGK) measuring 3.0mm × 4.9mm with 0.65mm lead pitch, offering surface-mount compatibility and thermal resistance (θJA) of 230°C/W on standard PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply Rail | Accepts 2.7V–10V; powers internal bias circuitry and output stage; must be decoupled near pin with ≥0.1µF ceramic capacitor. |
| V− | Negative Supply Rail / Ground | Reference node for single-supply operation (0V) or negative rail in split-supply mode (e.g., −5V); ties to system ground plane. |
| IN+ | Non-Inverting Input | High-impedance CMOS node (10GΩ RIN); accepts common-mode voltages from −0.2V to 2.7V at 2.7V supply. |
| IN− | Inverting Input | High-impedance CMOS node; used for feedback configuration; matched to IN+ for optimal CMRR performance. |
| OUTPUT | Amplifier Output | Capable of sourcing/sinking 10mA (short-circuit limited); swings rail-to-rail within 35mV under 2kΩ load. |
| SD | Shutdown Control Input | Digital logic input with hysteresis; asserts shutdown when voltage is within ~1V of selected supply (V+ or V−) referenced by SL pin. |
| SL | Shutdown Reference Select | Configures SD threshold reference: tied to V− → SD referenced to V−; tied to V+ → SD referenced to V+. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-supply utilization in single-ended 2.7V systems, eliminating need for external level shifters in sensor interfaces. |
| Versatile shutdown with SL/SD pins | Allows system-level power sequencing by selecting V+ or V− as shutdown reference, avoiding external voltage dividers or logic translators. |
| Low 1/f noise vs. LMC7101 | ~60% lower integrated noise (0.1Hz–100Hz) improves accuracy in DC-coupled precision measurement applications like battery voltage monitoring. |
| Threefold higher output current vs. LMC7101 | Delivers 10mA short-circuit current (vs. ~3mA for LMC7101), sustaining larger output swing into 2kΩ loads at low supply voltages. |
| DSBGA and VSSOP packaging options | VSSOP (DGK) variant provides proven manufacturability and thermal performance; DSBGA (YPB) offers 75% smaller footprint for space-constrained handheld designs. |
Applications
| Portable Communication (Voice, Data) | Cellular Phone Power Amp Control Loop |
|---|---|
Use Scenario: Amplifying and conditioning baseband audio or data signals in Bluetooth headsets and IoT modems operating from 2.7V coin cells. IC Role / Device Role / Timing Role: Buffer amplifier and level shifter ensuring rail-to-rail signal integrity between codec and RF transceiver. Use Value: 0.18% THD preserves voice clarity; 1MHz bandwidth supports wideband audio; shutdown mode reduces standby current to 1µA. |
Use Scenario: Monitoring and regulating output power of PA stages in GSM/EDGE handsets using feedback from directional couplers. IC Role / Device Role / Timing Role: Precision DC error amplifier comparing sensed PA output against reference voltage in closed-loop control. Use Value: ±5mV max offset minimizes power calibration error; rail-to-rail output drives DAC reference inputs directly; 36nV/√Hz noise avoids false power ramping. |
| Active Filters | Battery Sense |
Use Scenario: Implementing second-order low-pass or band-pass filters in medical sensors and portable test equipment powered from 3.3V rails. IC Role / Device Role / Timing Role: Unity-gain stable op-amp configured in Sallen-Key topology with external RC network. Use Value: 1MHz GBW supports filter cutoffs up to 100kHz; low input bias current (±1pA typ) prevents RC time constant drift; THD < 0.2% maintains signal fidelity. |
Use Scenario: Measuring lithium-ion cell voltage during charging/discharging cycles in smart battery packs with 2.7–4.2V range. IC Role / Device Role / Timing Role: High-impedance differential amplifier scaling battery voltage to ADC input range while rejecting common-mode noise. Use Value: 78dB CMRR rejects pack-level ripple; rail-to-rail input accepts 0–4.2V common-mode; shutdown disables sense path during sleep to conserve energy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC7101M5/NOPB | Lower output drive (3mA SC), higher 1/f noise, no shutdown pin, SOT-23-5 package (5-pin, no SD/SL). | Lacks configurable shutdown and rail-to-rail output swing; suited only for always-on, low-current buffer roles. | Select only if board space is critical and shutdown is unnecessary; verify output swing margin at 2.7V. |
| TLV2462IDR | Higher supply current (650µA typ), 6.4MHz GBW, dual-channel, no shutdown, SOIC-8 package. | Offers higher speed but consumes >2× more quiescent power; no power-gating capability for battery longevity. | Prefer when bandwidth >1MHz is required and shutdown is not needed; avoid in ultra-low-power intermittent-sensing systems. |
Compared with LMC7101M5/NOPB and TLV2462IDR, the LMC8101MM uniquely combines rail-to-rail I/O, sub-1mA quiescent current, hardware shutdown control, and 1MHz bandwidth in a standardized 8-pin VSSOP footprint-making it the only option among the three that satisfies simultaneous low-power, precision, and configurability requirements in portable power management circuits.
Availability
LMC8101MM is available at Aetrix Electronics and suitable for portable communication devices, cellular power amplifier control systems, and battery voltage monitoring circuits requiring stable component supply and long-term lifecycle support.
Supply support for LMC8101MM 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 decades of expertise in precision amplifiers and low-power signal chain solutions.
The LMC8101MM belongs to TI's LMC series of rail-to-rail CMOS op amps designed specifically for battery-powered portable electronics where supply voltage headroom, power efficiency, and signal fidelity are simultaneously constrained.
FAQ
What is the maximum supply voltage for the LMC8101MM?
The LMC8101MM supports a supply voltage range of 2.7V to 10V, with absolute maximum rating of 12V across V+ and V−. Operation above 10V voids guaranteed specifications and risks permanent damage per the Absolute Maximum Ratings table. For reliable long-term use, maintain supply within 2.7V–10V and ensure proper decoupling at the V+ pin.
Does the LMC8101MM support single-supply operation?
Yes, the LMC8101MM fully supports single-supply operation from 2.7V to 10V. Its rail-to-rail input common-mode range extends to V− −0.2V and V+ +0.0V (at 2.7V), and output swings to within 35mV of either rail under 2kΩ load. This allows direct interfacing with microcontroller ADCs and digital logic without external biasing networks.
How does the shutdown function work on the LMC8101MM?
The LMC8101MM uses two dedicated pins-SD (shutdown) and SL (shutdown reference select)-to enable flexible power gating. When SL is tied to V−, the SD pin threshold is referenced to V− (~1.5V above V−); when SL is tied to V+, SD is referenced to V+ (~1.5V below V+). Asserting SD within ~1V of the selected reference places the device in shutdown, reducing supply current to ≤1µA and tri-stating the output.
What is the thermal resistance (θJA) of the LMC8101MM in VSSOP package?
The LMC8101MM in VSSOP (DGK) package has a junction-to-ambient thermal resistance (θJA) of 230°C/W when mounted on a standard FR-4 PCB with typical copper pour. This value assumes no additional heatsinking and defines the maximum allowable power dissipation as PD = (150°C − TA)/230°C/W, where TA is ambient temperature. Derate linearly above 25°C ambient.
Is the LMC8101MM pin-compatible with the LMC7101?
No, the LMC8101MM is not pin-compatible with the LMC7101. The LMC8101MM uses an 8-pin VSSOP (DGK) package with dedicated SD and SL pins for shutdown control, whereas the LMC7101 is offered in 5-pin SOT-23 (no shutdown capability) and 8-pin SOIC packages with different pin assignments. Board layout changes are required for substitution.
LMC8101MM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.2V/µs
- Gain Bandwidth Product:
- 1.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMC8101MM FAQ
1.How can I place an order for LMC8101MM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC8101MM 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 LMC8101MM reliable?
The price and inventory of LMC8101MM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC8101MM is usually 5 days.
3.What payment methods are accepted for LMC8101MM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC8101MM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC8101MM?
LMC8101MM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC8101MM 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 LMC8101MM?
For technical support, including LMC8101MM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC8101MM requirements.
6.How does Aetrix verify that LMC8101MM is sourced from the original manufacturer or authorized distributors?
All LMC8101MM 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 LMC8101MM meets industry standards.
7.What is the process for return or replacement of LMC8101MM?
All LMC8101MM units undergo pre-shipment inspection (PSI). If there is an issue with LMC8101MM, 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 LMC8101MM part is unused and in its original packaging.
Return procedure for LMC8101MM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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