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Texas Instruments LM8272MM
- Part No.:
- LM8272MM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM8272MM.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,752
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Product details
Overview
LM8272MM from Texas Instruments is a dual rail-to-rail input/output operational amplifier optimized for high-output-current, unlimited capacitive load drive, and wide supply operation (2.5 V to 24 V). It delivers ±65 mA output current at 1 V from rails, 15 MHz gain-bandwidth product, 15 V/µs slew rate, and operates in −40°C to +85°C ambient. It serves as a VCOM driver in TFT-LCD panels and as a buffer in A/D converter front-ends.
For engineers reviewing the LM8272MM datasheet, LM8272MM pinout, LM8272MM application, or LM8272MM equivalent, key selection considerations include its rail-to-rail input common-mode range extending 0.3 V beyond rails, unlimited capacitive load stability, high output current capability, low input voltage noise (15 nV/√Hz), and compatibility with single- or split-supply configurations up to 24 V total.
Technical Context
The LM8272MM employs a dual-differential-pair input stage enabling rail-to-rail input operation with CMVR extending 0.3 V beyond both supply rails and maintaining ≥50 dB CMRR across that full range. Its output stage uses complementary NPN/PNP common-emitter transistors to achieve output swing within millivolts of V+ and V− while delivering ±130 mA short-circuit current.
Internal frequency compensation dynamically adapts to capacitive load magnitude: Miller capacitance increases under light loads for dominant-pole stability, while large loads reduce high-frequency transistor gain, shifting poles to preserve phase margin - enabling unconditional stability with unlimited capacitive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 24 V - supports single-supply systems (e.g., 5 V, 12 V) and split supplies (e.g., ±5 V, ±12 V) without performance degradation. |
| Gain-Bandwidth Product | 15 MHz - enables stable unity-gain operation up to ~12.5 MHz small-signal bandwidth (AV = +1, RL = 2 kΩ). |
| Slew Rate | 15 V/µs - ensures fast settling for large-signal steps into moderate capacitive loads (e.g., >100 nF) without distortion. |
| Output Current (1 V from rails) | ±65 mA - drives heavy resistive loads (e.g., 600 Ω) or high-capacitance nodes (e.g., TFT VCOM bus) with minimal droop. |
| Capacitive Load Tolerance | Unlimited - remains stable with any value of capacitive load (0 pF to >1 µF), eliminating need for isolation resistors in most applications. |
| Input Voltage Noise | 15 nV/√Hz - suitable for precision signal conditioning where low-noise amplification is required near DC or mid-band. |
| Input Common-Mode Range | 0.3 V beyond rails - enables direct sensing of signals at or slightly outside supply rails (e.g., high-side current sense at V+). |
Pinout & Package
The LM8272MM is housed in an 8-pin VSSOP package (3.00 mm × 3.00 mm body size), optimized for space-constrained PCB layouts while maintaining thermal performance (RθJA = 235°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Output A | Amplified output node for Channel A; capable of sourcing/sinking ±65 mA while swinging within ~250 mV of either rail. |
| 2 (−IN A) | Inverting Input A | Negative input terminal for Channel A; part of dual-differential-pair input stage enabling rail-to-rail common-mode operation. |
| 3 (+IN A) | Non-Inverting Input A | Positive input terminal for Channel A; accepts signals from −0.3 V to V+ + 0.3 V with ≥50 dB CMRR maintained. |
| 4 (V−) | Negative Supply | Ground or negative rail connection; supports single-supply (0 V) or split-supply (e.g., −5 V, −12 V) operation. |
| 5 (+IN B) | Non-Inverting Input B | Positive input terminal for Channel B; electrically identical to Pin 3, enabling independent dual-channel configuration. |
| 6 (−IN B) | Inverting Input B | Negative input terminal for Channel B; matches Pin 2 functionality, allowing fully differential or independent gain stages. |
| 7 (OUT B) | Output B | Amplified output node for Channel B; shares same output drive strength, swing, and load tolerance as OUT A. |
| 8 (V+) | Positive Supply | Positive supply connection; accepts up to 24 V total supply range (V+ − V−), with internal protection up to 27 V absolute max. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.3 V beyond both supply rails - enables accurate high-side and low-side sensing without level-shifting circuitry. |
| Unlimited capacitive load drive | Stable with any CL (0 pF to >1 µF) - eliminates external compensation components in TFT VCOM, ADC buffer, and audio output stages. |
| High output current (±65 mA @ 1 V from rails) | Drives 600 Ω loads directly or charges 100 nF+ nodes rapidly - reduces need for external buffers in panel driver and power monitoring circuits. |
| Low quiescent current (0.95 mA/channel) | 2.4 mA total supply current at 12 V - balances speed and efficiency for battery-backed or thermally constrained industrial modules. |
| Wide supply range (2.5 V to 24 V) | Operates from single 3.3 V logic rails up to industrial 24 V systems - simplifies BOM consolidation across multiple voltage domains. |
Applications
| TFT-LCD VCOM Driver | A/D Converter Buffer |
|---|---|
|
Use Scenario: Driving the common voltage (VCOM) node of active-matrix TFT-LCD panels requiring precise, low-noise, high-current analog voltage control. IC Role / Device Role / Timing Role: Dual-channel op amp configured as precision voltage follower and level shifter to maintain VCOM stability across temperature and pixel switching transients. Use Value: Unlimited capacitive load tolerance prevents oscillation on large-panel VCOM buses (>100 nF); ±65 mA output current sustains fast settling during frame-rate updates. |
Use Scenario: Isolating and buffering analog sensor outputs before sampling by SAR or sigma-delta ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain buffer providing low source impedance, rail-to-rail input range, and 15 MHz GBWP to preserve signal integrity up to Nyquist frequency. Use Value: 15 nV/√Hz input voltage noise minimizes added quantization error; rail-to-rail input allows direct interface with sensors operating near supply rails. |
| High-Side/Low-Side Sensing | Headphone Amplifier |
|
Use Scenario: Measuring current or voltage in automotive or industrial power rails where signals may exceed or fall below supply boundaries. IC Role / Device Role / Timing Role: Precision difference amplifier or single-ended amplifier leveraging extended input common-mode range (−0.3 V to V+ + 0.3 V). Use Value: 50 dB minimum CMRR over full extended input range ensures accuracy in noisy environments; no external clamping diodes needed for transient protection. |
Use Scenario: Delivering low-distortion audio signals to stereo headphone loads (32 Ω–600 Ω) in portable media devices. IC Role / Device Role / Timing Role: Dual-channel line driver with rail-to-rail output swing and 15 V/µs slew rate to reproduce dynamic audio waveforms without slew-induced distortion. Use Value: Output swing within 250 mV of rails maximizes usable voltage swing into 32 Ω loads; THD+N < 0.02% at 8 VPP confirms fidelity for consumer-grade playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower GBWP (6.4 MHz), lower output current (±30 mA), higher supply current (1.2 mA/channel), limited to 6 V max supply. | Better suited for low-power, low-speed sensor interfaces; not rated for >6 V or high-current VCOM driving. | Select when supply is ≤6 V and capacitive load < 10 nF; avoid for TFT panels or 12 V+ systems. |
| OPA2340UA | Higher GBWP (5.5 MHz), lower slew rate (6 V/µs), rail-to-rail output only (not input), 5.5 V max supply. | Optimized for low-noise, low-distortion audio; lacks rail-to-rail input and high-current drive needed for VCOM or sensing. | Prefer for audio line drivers where input range is constrained to mid-supply; unsuitable for high-side sensing or VCOM buffering. |
Compared with TLV2462IDR and OPA2340UA, the LM8272MM uniquely combines 24 V operation, unlimited capacitive load stability, and ±65 mA output drive - making it irreplaceable in TFT-LCD VCOM and industrial high-side sensing where those three parameters coexist.
Availability
LM8272MM is available at Aetrix Electronics and suitable for TFT-LCD display modules, industrial data acquisition systems, and portable audio equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for LM8272MM 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 specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and signal chain solutions.
The LM8272MM belongs to TI's precision rail-to-rail op amp portfolio, designed specifically for demanding analog signal conditioning in flat-panel displays, industrial sensing, and portable instrumentation where wide supply range and robust capacitive load drive are critical.
FAQ
What is the maximum supply voltage rating for the LM8272MM?
The LM8272MM has an absolute maximum supply voltage (V+ − V−) of 27 V, with recommended operating range from 2.5 V to 24 V. Operation at 24 V is fully characterized per datasheet specifications, including output swing, slew rate, and thermal performance. Exceeding 27 V risks permanent damage, and sustained operation above 24 V voids guaranteed performance.
Does the LM8272MM require external compensation for capacitive loads?
No, the LM8272MM does not require external compensation for any capacitive load - its internal adaptive compensation ensures unconditional stability from 0 pF up to multi-microfarad values. This is confirmed in the datasheet's "Driving Capacitive Loads" section and validated by Figure 25 (Settling Time vs. Cap Load) and Figure 24 (Overshoot vs. Cap Load), which show monotonic response across all tested loads.
What is the input common-mode voltage range of the LM8272MM?
The LM8272MM features a rail-to-rail input stage with common-mode voltage range extending 0.3 V beyond both supply rails - i.e., from (V− − 0.3 V) to (V+ + 0.3 V). This is verified in Section 6.5 (5V EC) and 6.6 (12V EC) of the datasheet, where CMVR is specified as −0.3 V to 5.3 V (at 5 V supply) and −0.3 V to 12.3 V (at 12 V supply), with ≥50 dB CMRR maintained across this full range.
Can the LM8272MM drive a 600 Ω load to rail in a ±5 V system?
Yes, the LM8272MM can drive a 600 Ω load to within ~250 mV of V+ and ~215 mV of V− at ±5 V supply, delivering ±55 mA output current per channel. This is documented in Section 6.5 (5V Electrical Characteristics), where "Output Swing High" is specified as 4.85 V min (i.e., 150 mV from 5 V) and "Output Swing Low" as 215 mV max (i.e., 215 mV from 0 V) under 5 mA load conditions.
Is the LM8272MM pin-compatible with other dual op amps in VSSOP-8 packages?
No, the LM8272MM has a unique pinout: Pins 1/7 are outputs, Pins 2/3/5/6 are inputs (with swapped +IN/−IN order between channels), and Pins 4/8 are supplies. This differs from industry-standard dual op amp pinouts (e.g., SO-8 or VSSOP-8 variants like TLV2462 or MCP6022), where Pin 1 is typically −IN A and Pin 2 is +IN A. PCB layout must follow the LM8272MM-specific pin mapping shown in Section 5 of the datasheet.
LM8272MM 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:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 15V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- 12.5 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 1.9mA (x2 Channels)
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 24 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LM8272MM FAQ
1.How can I place an order for LM8272MM through Aetrix?
Please submit a Request for Quotation (RFQ) for LM8272MM 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 LM8272MM reliable?
The price and inventory of LM8272MM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM8272MM is usually 5 days.
3.What payment methods are accepted for LM8272MM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM8272MM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM8272MM?
LM8272MM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM8272MM 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 LM8272MM?
For technical support, including LM8272MM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM8272MM requirements.
6.How does Aetrix verify that LM8272MM is sourced from the original manufacturer or authorized distributors?
All LM8272MM 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 LM8272MM meets industry standards.
7.What is the process for return or replacement of LM8272MM?
All LM8272MM units undergo pre-shipment inspection (PSI). If there is an issue with LM8272MM, 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 LM8272MM part is unused and in its original packaging.
Return procedure for LM8272MM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM8272MM Tags
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LM358DR
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