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Texas Instruments LM6584MTX
- Part No.:
- LM6584MTX
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM6584MTX.pdf
- Description:
- IC AMP GENERAL PURPOSE 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,417
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Product details
Overview
LM6584MTX from Texas Instruments is a quad, rail-to-rail input/output operational amplifier optimized for TFT-LCD panel VCOM driving, gamma buffering, and repair amplification. It delivers ±310/−410mA peak output current, 24MHz −3dB bandwidth at AV = +1, and 11V/μs slew rate while operating from 5V to 13V supplies. Its 0.5V beyond-rail input common-mode range and 50mV-from-rail output swing enable full dynamic range in single-supply LCD biasing applications.
For engineers reviewing the LM6584MTX datasheet, LM6584MTX pinout, LM6584MTX application, or LM6584MTX equivalent, key selection criteria include verified 75mA continuous output per channel, SOIC/TSSOP package compatibility, −40°C to +85°C industrial temperature rating, and confirmed suitability for high-capacitive-load gamma buffer stages requiring fast settling (270ns, 0.1%) and low THD (−53dBc HD2).
Technical Context
The LM6584MTX integrates four unity-gain-stable amplifiers on a single die using TI's VIP10 complementary bipolar process, enabling high-voltage operation (up to 13V) with low quiescent current (750μA per amp). Its dual-input-stage architecture-PNP pair for V−–0.5V to ~V+−1V and NPN pair for ~V+−1V to V++0.5V-enables true rail-to-rail input but introduces VOS transition effects near V+.
Output stage design supports high-current sourcing/sinking (310/410mA peak) into capacitive loads up to 330nF while maintaining stability, with phase margin of 56°–61° across supply voltages. PSRR degrades above 10kHz, especially on the negative rail, necessitating careful decoupling for noise-sensitive LCD bias rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 13V - supports both single-supply LCD systems (e.g., +12V VCOM) and split-supply configurations (±2.5V to ±6.5V) |
| Output Swing (RL = 2kΩ) | Within 50mV of either rail - ensures maximum signal headroom for precise DC biasing of LCD pixel voltage references |
| Continuous Output Current | 75mA per amplifier - sufficient for steady-state gamma correction and VCOM regulation under typical panel leakage |
| −3dB Bandwidth (AV = +1) | 24MHz - enables accurate reproduction of high-frequency gamma correction waveforms and repair signals |
| Slew Rate | 11V/μs - supports fast transient response during display frame updates and column driver switching events |
| Settling Time (0.1%) | 270ns - critical for minimizing ghosting and crosstalk in high-resolution, high-refresh-rate TFT panels |
| Input Common-Mode Range | V− − 0.5V to V+ + 0.5V - allows direct connection to digital logic references and mid-supply bias networks without level-shifting |
Pinout & Package
LM6584MTX is available in 14-pin TSSOP (PW package), pin-compatible with the 14-pin SOIC (D package). Thermal resistance θJA = 155°C/W reflects its compact footprint and higher power density versus SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 8, 11 | OUT A, OUT B, OUT C, OUT D | Amplifier outputs - drive VCOM, gamma reference, or repair signal lines; capable of sourcing/sinking ≥75mA continuously |
| 2, 5, 9, 12 | IN A−, IN B−, IN C−, IN D− | Inverting inputs - used in gain-of-−1 or active-filter configurations; require stable feedback network layout |
| 3, 6, 10, 13 | IN A+, IN B+, IN C+, IN D+ | Non-inverting inputs - accept DC reference, gamma DAC outputs, or video repair signals; support 0.5V beyond rails |
| 7 | V+ | Positive supply - must be decoupled with ≥1μF ceramic + 10μF tantalum close to pin; supports up to +13V |
| 14 | V− | Negative supply or ground - highly sensitive to PSRR degradation; requires low-inductance return path and dedicated decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–12V gamma DACs and full-swing VCOM generation without external level shifters or clamps |
| 75mA continuous output per channel | Meets sustained current demand of multi-channel gamma buffers driving >100pF panel capacitance per segment |
| 24MHz unity-gain bandwidth | Supports high-fidelity reproduction of multi-step gamma correction waveforms up to ~10MHz fundamental content |
| 270ns 0.1% settling time | Minimizes inter-line crosstalk and vertical banding artifacts in QHD+ and UHD LCD panels operating at 60Hz+ refresh |
| Stable with ≥330nF capacitive load | Eliminates need for isolation resistors when driving long, high-C gamma bus traces or large-area VCOM planes |
Applications
| LCD Panel VCOM Driver | Gamma Reference Buffer |
|---|---|
Use Scenario: Generating stable, low-noise common electrode voltage for active-matrix LCD panels to control pixel transmittance polarity and reduce flicker. IC Role / Device Role / Timing Role: Unity-gain buffer amplifying precision DAC output or resistor-divider reference; operates in DC-coupled, low-frequency (<100Hz) mode. Use Value: 50mV rail-to-rail swing and 0.7mV typical VOS ensure <±5mV VCOM accuracy over temperature, suppressing image inversion and DC drift. |
Use Scenario: Buffering multi-tap gamma DAC outputs to drive high-capacitance column driver reference buses in high-resolution displays. IC Role / Device Role / Timing Role: High-current, unity-gain follower delivering gamma correction voltages (e.g., 0.5V–11.5V) with minimal droop under dynamic load. Use Value: 75mA continuous output sustains 100pF bus charging at 60Hz frame rate; 24MHz BW preserves gamma step fidelity across 1024+ voltage levels. |
| Panel Repair Amplifier | TFT Gate-Line Bias Buffer |
Use Scenario: Replacing defective row/column driver outputs by injecting corrected analog video signals directly into panel trace nodes. IC Role / Device Role / Timing Role: Fast-settling, high-slew buffer reconstructing high-frequency video content (e.g., 1–5MHz repair waveforms) onto damaged segments. Use Value: 11V/μs slew rate and 270ns settling enable sub-microsecond edge fidelity, preventing visible line artifacts in repaired zones. |
Use Scenario: Providing regulated gate-on/gate-off voltages to TFT switching transistors in advanced LTPS or oxide-based backplanes. IC Role / Device Role / Timing Role: Precision DC buffer supplying stable VGH/VGL levels (e.g., +15V/−10V via charge pump) with low thermal drift. Use Value: Input CMVR extending 0.5V beyond rails allows direct connection to charge-pump outputs; 750μA/quiescent current minimizes standby power in always-on bias rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC074CDR | Lower supply range (2.7–16V), lower output current (45mA), slower slew (4.5V/μs), no beyond-rail input | Not suitable for high-current gamma buffering; acceptable only for low-power VCOM trimming | Select LM6584MTX when ≥75mA continuous output or 0.5V-beyond-rail input is required |
| OPA4991IPW | Higher precision (125μV VOS), lower noise (10.5nV/√Hz), but limited output current (65mA) and narrower supply (2.7–36V) | Better for sensor signal conditioning; insufficient for capacitive gamma bus driving | Choose LM6584MTX for TFT-LCD-specific high-output-current, high-C-load stability |
Compared with TLC074CDR and OPA4991IPW, LM6584MTX uniquely combines 75mA continuous output, 0.5V-beyond-rail input, and guaranteed stability with ≥330nF loads-making it the only qualified option for production-grade gamma buffer and VCOM driver stages in mainstream TFT panels.
Availability
LM6584MTX is available at Aetrix Electronics and suitable for TFT-LCD panel manufacturing, industrial HMI displays, and medical imaging monitor designs requiring stable component supply, extended temperature operation, and high-reliability analog buffering.
Supply support for LM6584MTX 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, embedded processing, and connectivity technologies, with decades of expertise in high-performance op amps for display and industrial applications.
The LM6584MTX belongs to TI's high-output-current, rail-to-rail op amp product line, engineered specifically for TFT-LCD panel biasing functions including VCOM driving, gamma correction, and repair amplification under demanding capacitive and thermal conditions.
FAQ
What is the maximum supply voltage for LM6584MTX?
The LM6584MTX has an absolute maximum supply voltage of 14V (V+ − V−), with recommended operating range from 5V to 13V. Operation at 13V enables full 12.9V output swing in single-supply VCOM applications, while 5V operation supports low-power portable display modules. Exceeding 14V risks permanent damage to internal ESD protection structures.
Does LM6584MTX support true rail-to-rail input operation?
Yes, LM6584MTX supports input common-mode voltage from V− − 0.5V to V+ + 0.5V, verified across its full −40°C to +85°C temperature range. This is achieved via dual PNP/NPN input stages, though VOS transitions occur near V+ − 1V. For precision DC applications, biasing inputs within the overlapping linear region (e.g., 0.5V to V+ − 1.5V) ensures optimal offset and CMRR performance.
Can LM6584MTX drive high-capacitive loads without external compensation?
Yes, LM6584MTX is unconditionally stable with capacitive loads ≥330nF in unity-gain configuration, as confirmed by TI's stability testing. Loads between 30pF and 330nF may require series isolation resistors (e.g., 10Ω) on the output to prevent peaking. The device remains stable with open-loop capacitive loading up to 1nF when used in non-inverting gain ≥2 configurations.
What is the thermal limitation of LM6584MTX in TSSOP package?
LM6584MTX in TSSOP (PW) package has θJA = 155°C/W. At maximum ambient temperature (85°C) and 13V supply, dissipating >400mW (e.g., 75mA × 5V drop) risks exceeding 150°C junction limit. Derating is required: continuous 75mA output per channel is only sustainable below 60°C ambient unless PCB copper area and airflow are enhanced per TI's layout guidelines.
Is LM6584MTX pin-compatible with other quad op amps in 14-pin TSSOP?
LM6584MTX uses standard 14-pin TSSOP pinout (TI PW package), matching industry-layout conventions for quad op amps: pins 1/4/8/11 = outputs, 2/5/9/12 = inverting inputs, 3/6/10/13 = non-inverting inputs, pin 7 = V+, pin 14 = V−. However, functional compatibility requires verification of output current, bandwidth, and rail-to-rail capability-many pin-compatible parts (e.g., LM324 variants) lack the 75mA output or beyond-rail input of LM6584MTX.
LM6584MTX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- General Purpose
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 4
- -3db Bandwidth:
- 24 MHz
- Slew Rate:
- 15V/µs
- Current - Supply:
- 780 µA
- Current - Output / Channel:
- 75 mA
- Voltage - Supply, Single/Dual (±):
- 5V ~ 13V, ±2.5V ~ 6.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
LM6584MTX FAQ
1.How can I place an order for LM6584MTX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6584MTX 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 LM6584MTX reliable?
The price and inventory of LM6584MTX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6584MTX is usually 5 days.
3.What payment methods are accepted for LM6584MTX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6584MTX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6584MTX?
LM6584MTX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6584MTX 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 LM6584MTX?
For technical support, including LM6584MTX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6584MTX requirements.
6.How does Aetrix verify that LM6584MTX is sourced from the original manufacturer or authorized distributors?
All LM6584MTX 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 LM6584MTX meets industry standards.
7.What is the process for return or replacement of LM6584MTX?
All LM6584MTX units undergo pre-shipment inspection (PSI). If there is an issue with LM6584MTX, 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 LM6584MTX part is unused and in its original packaging.
Return procedure for LM6584MTX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM6584MTX Tags
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