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Texas Instruments LMC8101TP/NOPB
- Part No.:
- LMC8101TP/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFBGA
- Datasheet:
-
LMC8101TP/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:570
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Product details
Overview
LMC8101TP/NOPB from Texas Instruments is a rail-to-rail input and output CMOS operational amplifier optimized for low-voltage battery-powered systems. It operates from 2.7V to 10V, delivers 1MHz gain-bandwidth, achieves ±5mV max offset voltage, draws <1mA supply current, and features integrated shutdown with 10µs turn-on time - enabling precision signal conditioning in space-constrained portable communication and sensor interface circuits.
For engineers reviewing the LMC8101TP/NOPB datasheet, LMC8101TP/NOPB pinout, LMC8101TP/NOPB application, or LMC8101TP/NOPB equivalent, key selection considerations include its DSBGA-8 package footprint (1.39mm × 1.41mm), rail-to-rail swing within 35mV of supplies at 2kΩ load, 36nV/√Hz input voltage noise, shutdown current ≤1µA, and compatibility with single-supply 2.7V operation in portable power amp control loops and active filters.
Technical Context
The LMC8101TP/NOPB 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 V+ + 0.2V (at VS = 3V). Its output stage delivers ±10mA short-circuit current and sustains rail-to-rail swing within 35mV of V+ or V− under 2kΩ load, enabled by complementary PMOS/NMOS output transistors.
Shutdown is controlled via dual pins: SL selects reference supply (V+ or V−), and SD triggers transition with built-in hysteresis; output enters high-impedance state while supply current drops to ≤1µA. The device exhibits 78dB typical CMRR and 57dB PSRR at 2.7V, with 1.0V/µs slew rate and 0.18% THD at 1kHz, making it suitable for low-distortion buffering in 2.7V–10V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 10V - supports single-supply operation down to coin-cell voltage without level-shifting circuitry. |
| Gain-Bandwidth Product | 1MHz - enables stable unity-gain buffer or gain-of-10 amplification up to 100kHz with adequate phase margin. |
| Input Offset Voltage | ±5mV max - ensures ≤5mV DC error in precision sensor signal chains operating at room temperature. |
| Rail-to-Rail Output Swing | Within 35mV of V+ or V− at RL = 2kΩ - preserves full dynamic range in low-voltage ADC driver or DAC output stages. |
| Supply Current (Active) | <1mA max - extends battery life in always-on monitoring nodes powered by 2.7V sources. |
| Shutdown Current | 1µA max - reduces quiescent power to negligible levels during system sleep modes. |
| Voltage Noise Density | 36nV/√Hz at 10kHz - maintains signal integrity in audio and instrumentation front-ends with moderate bandwidth. |
Pinout & Package
LMC8101TP/NOPB is housed in an 8-pin die-sized ball grid array (DSBGA) package measuring 1.39mm × 1.41mm with 0.5mm pitch and maximum height of 0.575mm. This ultra-compact package occupies ~25% of the board area required by SOT-23, enabling placement in height-sensitive applications including cellular handsets and PCMCIA cards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, B1 | V+ | Positive supply connection - must be decoupled locally to minimize noise coupling into rail-to-rail input stage. |
| A2, C2 | V− | Negative supply or ground reference - establishes common-mode baseline for rail-to-rail input operation. |
| A3 | Inverting Input (−) | Differential input node - high-impedance CMOS input (10GΩ) accepts signals across full supply range. |
| B3 | Non-Inverting Input (+) | Differential input node - identical electrical characteristics to inverting input; used for unity-gain follower configuration. |
| C1 | Output | Push-pull output stage - drives loads up to ±10mA and swings within 35mV of rails at 2kΩ. |
| C3 | SD (Shutdown) | Digital enable input - transitions device between active (low impedance output) and shutdown (high-Z output, ≤1µA IQ). |
| B2 | SL (Shutdown Logic) | Reference select pin - tied to V− for V−-referenced SD threshold (~1.5V above V−), or to V+ for V+-referenced threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal handling from 0V to V+ in single-supply 2.7V systems without external biasing networks. |
| Versatile shutdown with SL/SD control | Allows flexible power gating referenced to either supply rail, eliminating need for external level translators in mixed-supply designs. |
| Low 1/f noise (85nV/√Hz at 10Hz) | Reduces low-frequency drift in DC-coupled sensor interfaces and precision integrators compared to LMC7101. |
| Threefold higher output current vs. LMC7101 | Delivers ±10mA short-circuit current - sustains larger output voltage swing into 2kΩ loads at 2.7V supply. |
| DSBGA-8 package (1.39mm × 1.41mm) | Minimizes PCB real estate and profile - ideal for ultra-thin portable electronics where SOT-23 or VSSOP are mechanically prohibitive. |
Applications
| Portable Communication | Cellular Phone Power Amp Control |
|---|---|
Use Scenario: Signal conditioning of microphone or headset audio paths in Bluetooth headsets and feature phones operating from 2.7V lithium batteries. IC Role / Device Role / Timing Role: Rail-to-rail input/output op amp configured as AC-coupled preamplifier and output buffer. Use Value: Full 2.7V supply utilization preserves SNR without requiring charge pumps or dual supplies, while 36nV/√Hz noise ensures clean voice capture. |
Use Scenario: Closed-loop feedback control of RF power amplifier bias current in GSM/EDGE handset front-end modules. IC Role / Device Role / Timing Role: Precision current-sense amplifier and loop compensator driving PA bias FET gate. Use Value: ±5mV max offset minimizes PA output power error; shutdown mode disables bias path during transmit gaps to reduce average current. |
| Active Filters | Battery Sense Monitoring |
Use Scenario: 2nd-order low-pass filtering of analog sensor outputs prior to SAR ADC sampling in wearable health monitors. IC Role / Device Role / Timing Role: Unity-gain stable filter stage using Sallen-Key topology with 1MHz GBW support. Use Value: 1MHz gain-bandwidth allows cutoff frequencies up to ~100kHz; rail-to-rail swing avoids clipping on 2.7V full-scale inputs. |
Use Scenario: High-impedance voltage divider monitoring of Li-ion cell voltage during charging/discharging cycles in portable medical devices. IC Role / Device Role / Timing Role: Precision buffer isolating resistive divider from ADC input, rejecting supply ripple via 57dB PSRR. Use Value: 10GΩ input resistance prevents loading of high-value divider networks; shutdown mode eliminates leakage during standby. |
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 |
|---|---|---|---|
| LMC7101IM5X/NOPB | Lower output drive (±3.3mA), higher 1/f noise (200nV/√Hz at 10Hz), no shutdown function, SOT-23-5 package. | Lacks shutdown capability and rail-to-rail output swing margin at 2.7V; unsuitable for battery-gated systems requiring ultra-low IQ. | Select only if board space permits SOT-23 and shutdown is unnecessary; verify output swing meets 2.7V system requirements. |
| MCP6001T-E/OT | Similar 1MHz GBW and rail-to-rail I/O, but fixed 1.8V–6.0V supply range, 100µA supply current, no shutdown pin, SOT-23-5. | Cannot operate at 2.7V minimum with guaranteed specs; lacks programmable shutdown logic (SL/SD), limiting power management flexibility. | Consider only for 3.3V+ systems where shutdown is handled externally; confirm VOS (±1.5mV typ) and noise meet precision needs. |
Compared with LMC7101IM5X/NOPB and MCP6001T-E/OT, the LMC8101TP/NOPB uniquely combines 2.7V operation, rail-to-rail swing within 35mV at 2kΩ, sub-1µA shutdown current, and SL/SD-configurable shutdown - making it the only option among the three that satisfies simultaneous low-voltage, low-power, and flexible power-gating requirements in portable designs.
Availability
LMC8101TP/NOPB is available at Aetrix Electronics and suitable for portable communication, cellular phone power amplifier control, and battery sense monitoring requiring stable component supply across industrial and consumer production programs.
Supply support for LMC8101TP/NOPB 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMC8101TP/NOPB belongs to TI's precision rail-to-rail op amp product line, engineered specifically for low-voltage, low-power signal conditioning in battery-operated portable equipment where board area, power efficiency, and DC accuracy are critical.
FAQ
What is the maximum supply voltage for LMC8101TP/NOPB?
The LMC8101TP/NOPB supports a supply voltage range of 2.7V to 10V, with absolute maximum ratings specifying 12V between V+ and V−. Operation beyond 10V is not characterized and may compromise parametric performance or reliability. For designs targeting 10V operation, ensure thermal dissipation remains within limits given the DSBGA package's 220°C/W θJA rating.
Does LMC8101TP/NOPB support true rail-to-rail output swing at 2.7V supply?
Yes, the LMC8101TP/NOPB achieves rail-to-rail output swing within 35mV of V+ or V− when loaded with 2kΩ to V+/2, as specified in the datasheet under 2.7V conditions. This enables full utilization of the 2.7V supply range in single-supply configurations - critical for preserving dynamic range in ADC drivers and sensor interfaces.
How does the SL pin affect shutdown behavior in LMC8101TP/NOPB?
The SL pin on the LMC8101TP/NOPB selects the reference supply for the SD shutdown input threshold: tying SL to V− sets SD threshold ~1.5V above V−, while tying SL to V+ sets it ~1.5V below V+. This allows robust shutdown control in both single- and split-supply systems without external level-shifting components - a key differentiator versus simpler shutdown op amps.
What is the typical input bias current of LMC8101TP/NOPB?
The LMC8101TP/NOPB exhibits a typical input bias current of ±1pA at 25°C, with a maximum limit of ±64pA across temperature. This ultra-low bias current stems from its CMOS input stage and enables high-impedance sensor interfacing - such as thermistor or photodiode amplifiers - without significant DC error from input current flow through source impedances.
Can LMC8101TP/NOPB drive capacitive loads without oscillation?
The LMC8101TP/NOPB can drive capacitive loads up to ~8200pF with 5kΩ resistive load (AV = +10), but stability improves with increased resistive loading or use of an isolation resistor (e.g., 100Ω) between output and capacitor. Without compensation, oscillation may occur with >300pF purely capacitive loads at unity gain - refer to Figure 41–44 in the datasheet for slew-rate vs. capacitive-load curves.
LMC8101TP/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-DSBGA
LMC8101TP/NOPB FAQ
1.How can I place an order for LMC8101TP/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC8101TP/NOPB 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 LMC8101TP/NOPB reliable?
The price and inventory of LMC8101TP/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC8101TP/NOPB is usually 5 days.
3.What payment methods are accepted for LMC8101TP/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC8101TP/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC8101TP/NOPB?
LMC8101TP/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC8101TP/NOPB 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 LMC8101TP/NOPB?
For technical support, including LMC8101TP/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC8101TP/NOPB requirements.
6.How does Aetrix verify that LMC8101TP/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC8101TP/NOPB 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 LMC8101TP/NOPB meets industry standards.
7.What is the process for return or replacement of LMC8101TP/NOPB?
All LMC8101TP/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC8101TP/NOPB, 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 LMC8101TP/NOPB part is unused and in its original packaging.
Return procedure for LMC8101TP/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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