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Texas Instruments LM8261M5/NOPB
- Part No.:
- LM8261M5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM8261M5/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,152
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Product details
Overview
LM8261M5/NOPB from Texas Instruments is a single rail-to-rail input/output operational amplifier optimized for high-output-current, unlimited capacitive load driving, and wide supply operation. It delivers 35 V/µs slew rate, 24 MHz gain-bandwidth product, ±125 mA short-circuit output current, and operates from 2.7 V to 32 V. It serves as a VCOM driver in TFT-LCD panels and as a low-noise buffer in precision A/D converter front-ends.
For engineers reviewing the LM8261M5/NOPB datasheet, LM8261M5/NOPB pinout, LM8261M5/NOPB application, or LM8261M5/NOPB equivalent, key selection criteria include guaranteed unlimited capacitive load stability, rail-to-rail I/O at 3 V, 12 nV/√Hz input voltage noise, THD+N < 0.00022%, and SOT-23-5 package compatibility with space-constrained analog signal paths.
Technical Context
The LM8261M5/NOPB employs a proprietary output stage architecture enabling stable operation into unlimited capacitive loads without external isolation resistors-critical for TFT-LCD VCOM buffering where load capacitance exceeds 1 µF. Its >90 dB common-mode rejection over full rail-to-rail input range supports accurate high-side and low-side current sensing without level-shifting circuitry.
Designed for single- or dual-supply use, it maintains consistent 1.35 mA quiescent current across 2.7–32 V supply range and exhibits minimal parameter drift versus supply variation. Input voltage noise (12 nV/√Hz) and current noise (1 pA/√Hz) are specified at 1 kHz and validated over −40°C to +85°C operating temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| GBW | 24 MHz - Enables stable unity-gain operation up to 24 MHz; sufficient for video-rate buffering and medium-speed signal conditioning. |
| Slew Rate | 35 V/µs - Supports fast 10 V step settling in ≤430 ns (0.1%); critical for driving large capacitive loads without distortion. |
| Supply Range | 2.7 V to 32 V - Allows direct integration into industrial 24 V systems and battery-powered 3 V designs without regulators. |
| Output Current | ±125 mA - Drives heavy loads (e.g., LCD VCOM lines, headphone outputs) without external boost stages. |
| Input Noise | 12 nV/√Hz @ 1 kHz - Low enough for 16-bit ADC buffering with <0.00022% THD+N at 1 kHz, 3 VRMS output. |
| CMRR | ≥80 dB (−40°C to +125°C) - Ensures accuracy in high-side/low-side sensing applications despite supply rail variations. |
| THD+N | < 0.00022% @ 1 kHz - Meets high-fidelity audio and precision measurement requirements without post-filtering. |
Pinout & Package
The LM8261M5/NOPB is housed in a 5-pin SOT-23 package (2.9 mm × 2.8 mm), optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified signal output; capable of sourcing/sinking ±125 mA into unlimited capacitive loads with stable phase margin ≥50°. |
| 2 (V−) | Negative Supply | Ground or negative rail connection; supports single-supply (V− = GND) or dual-supply (V− = −VS) configurations. |
| 3 (IN+) | Non-inverting Input | High-impedance input (±0.4 µA bias current) with rail-to-rail common-mode range (V− to V+). |
| 4 (IN−) | Inverting Input | Differential input node; enables standard op-amp configurations (inverting, non-inverting, differential) with 90 dB CMRR. |
| 5 (V+) | Positive Supply | Positive rail connection; accepts up to 32 V, enabling direct interface with unregulated industrial supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Operates with input common-mode range from V− to V+ and output swing within 60 mV of rails at 2 kΩ load-enables full dynamic range utilization in 3 V systems. |
| Unlimited capacitive load drive | Stable with any CL value (tested to >1 µF); eliminates need for series isolation resistors in TFT-LCD VCOM and ADC buffer applications. |
| High output current | ±125 mA short-circuit current rating ensures robustness during transient overloads and enables direct driving of low-impedance loads (e.g., 600 Ω headphones). |
| Low noise performance | 12 nV/√Hz voltage noise + 1 pA/√Hz current noise enables high-resolution sensor signal conditioning without added noise floor degradation. |
| Wide supply flexibility | 2.7–32 V operation with <2.23 mA max supply current across temperature allows use in both battery-powered portable devices and 24 V industrial controllers. |
Applications
| TFT-LCD VCOM Driver | A/D Converter Buffer |
|---|---|
Use Scenario: Driving the common voltage (VCOM) line of active-matrix TFT-LCD panels, where load capacitance ranges from 100 nF to >1 µF. IC Role / Device Role / Timing Role: Precision voltage buffer maintaining stable DC offset and fast transient response across varying panel temperatures and resolutions. Use Value: Eliminates external RC compensation and guarantees monotonic settling without ringing-even under worst-case capacitive loading-reducing BOM count and layout complexity. |
Use Scenario: Conditioning analog signals prior to sampling by 12–16 bit successive-approximation (SAR) or sigma-delta ADCs. IC Role / Device Role / Timing Role: Low-noise, low-distortion unity-gain buffer isolating source impedance and driving ADC input capacitance (typically 10–30 pF). Use Value: Preserves SNR and ENOB via 12 nV/√Hz noise and <0.00022% THD+N, while rail-to-rail output swing maximizes ADC input dynamic range utilization. |
| High-Side Current Sensing | Headphone Amplifier |
Use Scenario: Measuring load current on the high-side of a 12–24 V power rail using a shunt resistor and differential amplifier configuration. IC Role / Device Role / Timing Role: Differential input stage rejecting common-mode voltage up to 32 V while amplifying small mV-level shunt voltage drops. Use Value: 90 dB CMRR and rail-to-rail input enable accurate measurement without level-shifting ICs or precision matched resistor networks. |
Use Scenario: Delivering low-distortion audio to stereo 16–32 Ω headphone loads in portable media players or docking stations. IC Role / Device Role / Timing Role: Single-supply output stage delivering ±125 mA peak current with rail-to-rail swing into reactive loads. Use Value: Direct drive capability eliminates output coupling capacitors, reducing size/cost and extending bass response down to 20 Hz without DC blocking artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, high-output-current op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2782IDR | Lower supply range (1.8–10 V), lower output current (±40 mA), 10 MHz GBW, higher input bias current (1 pA typical vs. 0.4 µA). | Better suited for ultra-low-voltage battery-powered sensors; insufficient for 24 V VCOM or high-current headphone drive. | Select TLV2782IDR only when supply is ≤10 V and load current <40 mA; not drop-in for LM8261M5/NOPB's 32 V/±125 mA use cases. |
| OPA2350UA | 24 MHz GBW, 33 V/µs slew rate, but limited to ±16 V supply (32 V max), lower output current (±50 mA), no guaranteed unlimited capacitive load drive. | Acceptable for medium-current 16-bit ADC buffering but requires external compensation for >100 nF loads and cannot replace LM8261M5/NOPB in TFT-LCD VCOM roles. | Choose OPA2350UA for precision low-noise applications below 50 mA load; verify stability with RC isolation if driving >100 nF. |
Compared with TLV2782IDR and OPA2350UA, the LM8261M5/NOPB uniquely combines 32 V operation, ±125 mA output, and guaranteed unlimited capacitive load stability-making it irreplaceable in TFT-LCD VCOM and industrial high-side sensing where those three parameters coexist.
Availability
LM8261M5/NOPB is available at Aetrix Electronics and suitable for TFT-LCD display modules, precision data acquisition systems, and industrial current-sensing circuits requiring stable component supply across extended temperature and voltage ranges.
Supply support for LM8261M5/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 op-amps and high-reliability signal-chain solutions.
The LM8261 product line was engineered specifically for flat-panel display VCOM drivers and high-output-current analog signal conditioning-prioritizing capacitive load immunity, rail-to-rail operation, and wide supply flexibility over ultra-low power or GHz bandwidth.
FAQ
What is the maximum capacitive load the LM8261M5/NOPB can drive without oscillation?
The LM8261M5/NOPB is explicitly characterized and guaranteed for stable operation into unlimited capacitive loads-including values exceeding 1 µF-as confirmed in TI's datasheet Figure 5-29 (overshoot vs. cap load) and Section 6.1. This eliminates the need for series isolation resistors in TFT-LCD VCOM and ADC buffer applications, unlike most general-purpose op-amps which require careful compensation above 100–500 pF.
Does the LM8261M5/NOPB support true rail-to-rail input at 3 V supply?
Yes-the LM8261M5/NOPB features rail-to-rail input with common-mode voltage range spanning V− to V+, verified down to 3 V total supply (e.g., V+ = 3 V, V− = 0 V). Its input stage operates linearly across the full supply range, enabling accurate sensing and buffering even in low-voltage battery-powered systems without external level-shifting circuitry.
What is the thermal resistance (RθJA) of the LM8261M5/NOPB in SOT-23-5 package?
The junction-to-ambient thermal resistance (RθJA) for the LM8261M5/NOPB in the DBV (SOT-23-5) package is 185.4°C/W, as specified in Section 5.4 of the TI datasheet. This value assumes standard PCB mounting with no copper pour; adding thermal vias and copper area beneath the pad reduces effective RθJA and improves power handling capability.
Can the LM8261M5/NOPB be used in single-supply headphone amplifier applications?
Yes-the LM8261M5/NOPB supports single-supply operation (e.g., V+ = 5 V, V− = GND) and delivers ±125 mA output current with rail-to-rail output swing. Its <0.00022% THD+N at 1 kHz and 12 nV/√Hz input voltage noise make it suitable for driving 16–32 Ω headphones directly, eliminating coupling capacitors and preserving low-frequency response.
What is the ESD rating of the LM8261M5/NOPB?
The LM8261M5/NOPB has an HBM ESD rating of ±2000 V and a CDM rating of ±1500 V per JEDEC JS-001 and JS-002 standards. These ratings reflect robust on-chip protection diodes and allow safe handling in standard ESD-controlled environments without requiring additional external protection in typical PCB layouts.
LM8261M5/NOPB 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:
- 12V/µs
- Gain Bandwidth Product:
- 21 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1.05 µA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 1.3mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM8261M5/NOPB FAQ
1.How can I place an order for LM8261M5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM8261M5/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 LM8261M5/NOPB reliable?
The price and inventory of LM8261M5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM8261M5/NOPB is usually 5 days.
3.What payment methods are accepted for LM8261M5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM8261M5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM8261M5/NOPB?
LM8261M5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM8261M5/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 LM8261M5/NOPB?
For technical support, including LM8261M5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM8261M5/NOPB requirements.
6.How does Aetrix verify that LM8261M5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM8261M5/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 LM8261M5/NOPB meets industry standards.
7.What is the process for return or replacement of LM8261M5/NOPB?
All LM8261M5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM8261M5/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 LM8261M5/NOPB part is unused and in its original packaging.
Return procedure for LM8261M5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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