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Texas Instruments LMC8101TPX/NOPB
- Part No.:
- LMC8101TPX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFBGA
- Datasheet:
-
LMC8101TPX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:598
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Product details
Overview
LMC8101TPX/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 ±5 mV max offset voltage, 1 MHz gain-bandwidth product, 36 nV/√Hz input voltage noise, and features integrated shutdown with 1 µA max current. It serves as a precision buffer or active filter in portable voice/data interfaces.
For engineers reviewing the LMC8101TPX/NOPB datasheet, LMC8101TPX/NOPB pinout, LMC8101TPX/NOPB application, or LMC8101TPX/NOPB equivalent, key selection criteria include its DSBGA-8 package footprint (1.39 mm × 1.41 mm), 10 µs shutdown turn-on time, rail-to-rail swing within 35 mV of supplies at 2 kΩ load, THD of 0.18% at 1 kHz, and compatibility with single-supply 2.7V operation in space-constrained analog signal chains.
Technical Context
The LMC8101TPX/NOPB implements a CMOS input stage enabling rail-to-rail common-mode input range and low input bias current (±1 pA typical). Its output stage supports rail-to-rail swing with 10 mA short-circuit current and 1 V/µs slew rate under 2.7V supply, maintaining stability into capacitive loads up to 8.2 nF when configured with appropriate resistive loading.
Shutdown control uses dual pins-SD (shutdown enable) and SL (supply reference selector)-to set threshold relative to V+ or V−, with built-in hysteresis preventing chatter. The device achieves 78 dB CMRR and 57 dB PSRR at 2.7V, supporting accurate sensing and signal conditioning in noisy low-voltage environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 10V - Enables direct integration into single-cell Li-ion (3.0–3.7V) and dual-cell alkaline/nickel-based systems without regulation. |
| Input Offset Voltage | ±5 mV max - Ensures ≤10 mV total error in unity-gain buffer configurations across temperature, critical for precision sensor interfacing. |
| Gain-Bandwidth Product | 1 MHz - Supports stable closed-loop operation up to ~100 kHz at gain ≥10, suitable for anti-aliasing and reconstruction filters. |
| Rail-to-Rail Output Swing | Within 35 mV of supplies (RL = 2 kΩ) - Delivers >97% dynamic range utilization at 2.7V, maximizing SNR in low-voltage ADC drivers. |
| Shutdown Current | 1 µA max - Reduces system standby power by >1000× versus active mode (0.7 mA), extending battery life in intermittent-sensing applications. |
| THD + Noise | 0.18% at 1 kHz - Meets audio-grade line driver requirements for voice-band communication circuits without external compensation. |
| Voltage Noise Density | 36 nV/√Hz at 10 kHz - Lower than LMC7101 by ~40%, improving resolution in high-gain transducer amplifiers below 100 kHz. |
Pinout & Package
LMC8101TPX/NOPB is packaged in an 8-pin die-sized ball grid array (DSBGA, YPB0008) measuring 1.39 mm × 1.41 mm with 0.5 mm pitch and maximum height of 0.575 mm. This ultra-compact package occupies ~25% of the board area required by SOT-23 equivalents and enables placement in height-sensitive assemblies such as cellular handsets and PCMCIA cards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | V+ | Positive supply terminal - Must be decoupled with ≥0.1 µF ceramic capacitor placed within 2 mm of this pin for stable operation. |
| B1 | OUTPUT | Amplifier output node - Capable of sourcing/sinking 10 mA; requires series resistor or isolation network when driving >1 nF capacitive loads. |
| C1 | SD | Shutdown enable input - Active-low when referenced to V− (SL = V−); threshold ≈1.5 V below selected supply rail with hysteresis. |
| C3 | SL | Supply reference selector - Tied to V− for V−-referenced SD threshold; tied to V+ for V+-referenced threshold; must not float. |
| A3 | Inverting Input (−) | Inverting input node - High-impedance CMOS input (10 GΩ common-mode resistance) compatible with high-Z sensor sources. |
| B3 | Non-Inverting Input (+) | Non-inverting input node - Supports rail-to-rail common-mode range (0 V to V+ at 2.7V supply), enabling single-supply level-shifting. |
| A2 | V+ | Redundant positive supply connection - Internally bonded to A1; improves power delivery integrity and thermal performance in DSBGA layout. |
| C2 | V− | Negative supply or ground terminal - Required even in single-supply operation; establishes reference for internal biasing and shutdown logic. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal handling from 0 V to V+ in single-supply configurations, eliminating level-shifting circuitry in battery-powered data acquisition. |
| Versatile shutdown with SL/SD control | Allows flexible power sequencing: SD threshold referenced to either supply rail via SL pin, supporting mixed-voltage system integration without external logic. |
| Low 1/f noise improvement over LMC7101 | Delivers ~60% lower integrated noise (0.1–100 Hz), enhancing DC accuracy in precision instrumentation and low-frequency sensor amplification. |
| Threefold higher output current vs. LMC7101 | Sustains 10 mA output drive at 2.7V, enabling larger output swing into 2 kΩ loads (2.67 V high / 32 mV low) where LMC7101 saturates earlier. |
| DSBGA package footprint | 1.39 mm × 1.41 mm outline with 0.5 mm pitch - Reduces PCB area by 75% versus SOT-23, facilitating dense layout in portable wireless modules and wearable electronics. |
Applications
| Portable Voice/Data Interface | Cellular Power Amplifier Control |
|---|---|
|
Use Scenario: Signal conditioning and buffering between baseband processor and RF front-end in GSM/EDGE handsets. IC Role / Device Role / Timing Role: Precision buffer amplifier isolating DAC output from variable RF load impedance while maintaining rail-to-rail swing. Use Value: 0.18% THD ensures clean envelope detection; 10 µs shutdown enables rapid power gating during transmit/receive transitions without output glitches. |
Use Scenario: Closed-loop feedback control of PA bias current in multi-band cellular transceivers. IC Role / Device Role / Timing Role: Error amplifier comparing sensed PA current against reference voltage to regulate bias in real time. Use Value: ±5 mV offset ensures <1% current regulation error; rail-to-rail inputs accommodate wide reference range; shutdown reduces quiescent drain during idle periods. |
| Battery Voltage Sensing | VCO Tuning Loop |
|
Use Scenario: High-impedance monitoring of lithium-ion cell voltage during charging/discharging cycles in portable medical devices. IC Role / Device Role / Timing Role: Unity-gain buffer isolating battery terminal from ADC input, rejecting supply ripple via 57 dB PSRR. Use Value: 10 GΩ input resistance prevents loading of high-ESR cells; 36 nV/√Hz noise preserves resolution in 12-bit+ measurements over full temperature range. |
Use Scenario: Tuning voltage generation and filtering for voltage-controlled oscillators in Bluetooth/Wi-Fi SoCs. IC Role / Device Role / Timing Role: Low-noise integrator and loop filter element shaping phase response in PLL frequency synthesizers. Use Value: 1 MHz GBW supports loop bandwidths up to 100 kHz; low 1/f noise minimizes close-in phase jitter; shutdown disables loop during sleep modes. |
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 |
|---|---|---|---|
| LMC7101IM5/NOPB | Higher offset (±7 mV max), lower output drive (3.3 mA), no shutdown, SOT-23-5 package | Lacks shutdown and rail-to-rail output; limited to non-power-gated, low-current buffer roles | Select only if board space allows SOT-23 and system does not require power cycling or full-rail swing. |
| TLV2462IDR | Higher supply current (550 µA typ), wider supply range (2.7–6 V), SOIC-8 package, no shutdown | Optimized for higher-speed applications (6.4 MHz GBW) but consumes >3× more quiescent current | Prefer when bandwidth >1 MHz is required and shutdown is unnecessary; avoid in battery-limited designs. |
Compared with LMC7101IM5/NOPB, LMC8101TPX/NOPB provides superior DC precision, output drive, and power management; compared with TLV2462IDR, it trades bandwidth for ultra-low quiescent current and integrated shutdown-making it optimal for always-on, space-constrained, low-duty-cycle sensing nodes.
Availability
LMC8101TPX/NOPB is available at Aetrix Electronics and suitable for portable communication interfaces, cellular power amplifier control loops, and battery voltage sensing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant DSBGA packaging.
Supply support for LMC8101TPX/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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and low-power signal chain solutions.
The LMC8101TPX/NOPB belongs to TI's LMC precision op amp family, designed specifically for battery-operated portable electronics demanding rail-to-rail operation, minimal quiescent current, and ultra-small packaging without sacrificing DC accuracy or noise performance.
FAQ
What is the maximum operating junction temperature for LMC8101TPX/NOPB?
The LMC8101TPX/NOPB has a maximum junction temperature of +150°C, with specified operating junction temperature range from −40°C to +85°C. Thermal resistance θJA is 220°C/W for the DSBGA package, meaning at 25°C ambient and 0.7 mA supply current, junction temperature rise is approximately 15°C - well within safe limits for continuous operation in handheld devices.
Does LMC8101TPX/NOPB support true single-supply operation down to 2.7V?
Yes, LMC8101TPX/NOPB is fully specified for single-supply operation from 2.7V to 10V. At 2.7V, it maintains rail-to-rail input common-mode range (0 V to 2.7 V), output swing within 35 mV of both rails into 2 kΩ, 78 dB CMRR, and 1 MHz gain-bandwidth - enabling robust functionality in unregulated single-cell battery systems without level-shifting circuitry.
How does the SL pin affect shutdown behavior in LMC8101TPX/NOPB?
The SL pin selects the reference rail for the SD shutdown input threshold: when SL = V−, SD activates shutdown when pulled within ~1.5 V of V−; when SL = V+, SD activates when pulled within ~1.5 V of V+. This allows seamless integration into mixed-supply systems. Leaving SL unconnected causes undefined behavior - it must be hard-wired to V+ or V−.
Can LMC8101TPX/NOPB drive capacitive loads without oscillation?
LMC8101TPX/NOPB can drive up to 8.2 nF with 5 kΩ resistive load (AV = +10) while maintaining stability. For purely capacitive loads, adding a 100 Ω isolation resistor between output and load enables unlimited capacitance tolerance at AV = +1. Without isolation, stability is guaranteed only up to ~300 pF at 2.7V supply - design must include resistive loading or isolation per TI Application Note SNOS496F.
Is LMC8101TPX/NOPB pin-compatible with other members of the LMC8101 family?
Yes, LMC8101TPX/NOPB shares identical pinout and electrical behavior with all LMC8101 variants including LMC8101TP/NOPB and LMC8101MM/NOPB - all use the same DSBGA-8 (YPB) or VSSOP-8 footprints. Functionally, it is a direct replacement for any LMC8101 part in designs using the DSBGA package, with identical shutdown timing, offset, noise, and drive specifications.
LMC8101TPX/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
LMC8101TPX/NOPB FAQ
1.How can I place an order for LMC8101TPX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC8101TPX/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 LMC8101TPX/NOPB reliable?
The price and inventory of LMC8101TPX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC8101TPX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC8101TPX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC8101TPX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC8101TPX/NOPB?
LMC8101TPX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC8101TPX/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 LMC8101TPX/NOPB?
For technical support, including LMC8101TPX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC8101TPX/NOPB requirements.
6.How does Aetrix verify that LMC8101TPX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC8101TPX/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 LMC8101TPX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC8101TPX/NOPB?
All LMC8101TPX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC8101TPX/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 LMC8101TPX/NOPB part is unused and in its original packaging.
Return procedure for LMC8101TPX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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