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Texas Instruments LM6584MT
- Part No.:
- LM6584MT
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM6584MT.pdf
- Description:
- IC AMP GENERAL PURPOSE 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
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Product details
Overview
LM6584MT 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 supply. 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 LM6584MT datasheet, LM6584MT pinout, LM6584MT application, or LM6584MT equivalent, key selection criteria include high-output-current capability under capacitive load, rail-to-rail operation across industrial temperature (−40°C to +85°C), SOIC-14/TSSOP-14 package compatibility, and verified performance in VCOM/gamma buffer circuits requiring fast settling (270ns @ 0.1%) and low distortion (−53dBc HD2).
Technical Context
The LM6584MT integrates four unity-gain-stable amplifiers using TI's VIP10 complementary bipolar process, enabling simultaneous rail-to-rail input (V− −0.5V to V+ +0.5V) and output (within 50mV of rails) operation. Its dual-input-stage architecture-PNP pair for low-VCM and NPN pair for high-VCM-supports wide common-mode voltage handling but introduces measurable VOS transition near V+ −1V.
Output stage design delivers 75mA continuous sourcing/sinking per amplifier and up to 310mA/410mA peak sink/source, with stability maintained up to 30pF capacitive load in unity gain and restored stability beyond 330nF. Phase margin remains ≥56° across 5V–13V supplies and −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 13V - supports both single-supply LCD biasing (e.g., +12V VCOM) and split-supply operation (±2.5V to ±6.5V). |
| −3dB Bandwidth (AV = +1) | 24MHz - enables accurate reproduction of gamma correction steps and fast VCOM transient response in high-resolution panels. |
| Slew Rate | 11V/μs - ensures minimal distortion during large-signal transitions in repair amp applications with video-frequency content. |
| Output Short-Circuit Current | +310/−410mA - sustains charge/discharge of large panel capacitances (e.g., >10nF VCOM bus) without latch-up or thermal shutdown. |
| Input Common-Mode Range | V− −0.5V to V+ +0.5V - allows direct connection to digital DAC outputs or reference dividers operating at rail extremes. |
| Output Voltage Swing (RL = 2kΩ) | Within 50mV of either rail - maximizes usable voltage headroom for precise DC bias control in 12V or 5V LCD systems. |
| Settling Time (0.1%) | 270ns - meets timing requirements for gamma step updates in QHD+ and UHD displays with rapid grayscale transitions. |
Pinout & Package
LM6584MT is available in 14-pin SOIC (D) and TSSOP (PW) packages. Both share identical pin mapping and thermal resistance specifications (SOIC: 145°C/W; TSSOP: 155°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 8, 11 | Output (OUT A/B/C/D) | Amplifier outputs - drive VCOM, gamma reference, or repair signal nodes; capable of sourcing/sinking ≥75mA continuously. |
| 2, 5, 9, 12 | Inverting Input (IN A−/B−/C−/D−) | Negative feedback node - connects to output for unity-gain buffer configuration typical in LCD biasing. |
| 3, 6, 10, 13 | Non-Inverting Input (IN A+/B+/C+/D+) | Reference input - accepts DC gamma voltages or AC repair signals; supports common-mode range beyond rails. |
| 7 | Positive Supply (V+) | Main power rail - accepts 5V–13V; requires local 0.1μF + 10μF decoupling due to high transient current demand. |
| 14 | Negative Supply (V−) | Ground or negative rail - must be low-impedance; layout critical to avoid ground bounce-induced oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization in 5V–13V single-supply LCD systems without level-shifting circuitry. |
| 75mA continuous output current per amplifier | Supports stable DC biasing of high-capacitance VCOM buses (>10nF) without thermal derating in SOIC package. |
| 24MHz unity-gain bandwidth | Meets timing requirements for gamma voltage sequencing in 60Hz+ refresh rate panels with >1024 grayscale steps. |
| 270ns 0.1% settling time | Ensures fidelity of fast transient repair signals (e.g., line inversion artifacts) without visible display artifacts. |
| −53dBc 2nd harmonic distortion @ 1MHz | Maintains signal purity in analog gamma buffers where harmonic content could cause color banding or crosstalk. |
Applications
| LCD Panel VCOM Driver | LCD Panel Gamma Buffer |
|---|---|
Use Scenario: Provides stable common electrode voltage (VCOM) for active-matrix TFT-LCD panels, compensating for pixel feedthrough and flicker. IC Role / Device Role / Timing Role: Quad unity-gain buffer delivering precise DC voltage to distributed VCOM bus; handles capacitive loads up to 10nF. Use Value: 50mV rail-to-rail output swing and 75mA continuous drive ensure <±5mV regulation error across full panel temperature range (−40°C to +85°C). |
Use Scenario: Buffers multi-step gamma reference voltages generated by digital-to-analog converters for grayscale voltage generation. IC Role / Device Role / Timing Role: Four independent non-inverting amplifiers each driving one gamma tap; operates at DC with occasional step transitions. Use Value: 0.5V beyond-rail input range accepts DAC outputs at 0V or VDD, eliminating external level shifters and reducing BOM count. |
| LCD Panel Repair Amp | TFT-LCD Panel Test & Calibration |
Use Scenario: Injects high-fidelity correction signals into column/row driver lines to compensate for manufacturing defects or aging-related non-uniformity. IC Role / Device Role / Timing Role: High-speed buffer amplifying video-rate repair waveforms (up to 5MHz) with minimal phase delay. Use Value: 11V/μs slew rate and 24MHz bandwidth preserve edge integrity of repair pulses, preventing ghosting or blurring in defect-corrected regions. |
Use Scenario: Used on automated test equipment (ATE) to validate VCOM stability, gamma linearity, and panel uniformity during final production screening. IC Role / Device Role / Timing Role: Precision reference driver generating calibrated DC and AC test stimuli across all four channels simultaneously. Use Value: Matched channel performance (VOS drift <5μV/°C, CMRR >75dB) ensures consistent test results across multi-channel calibration sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad high-output-current op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM6582MT | Dual-channel version; identical electrical specs per amplifier but only two amplifiers per package. | Requires two devices for full quad functionality; increases PCB area and component count in VCOM/gamma designs. | Select when only two high-current buffers are needed or board space permits dual placement. |
| LMH6629MA | Single-channel, higher bandwidth (1.5GHz), lower output current (120mA), no rail-to-rail input. | Not suitable for direct VCOM/gamma replacement; used in high-speed signal path conditioning, not DC biasing. | Choose only for specialized high-frequency analog front-end roles-not as functional substitute for LM6584MT in LCD biasing. |
Compared with LM6582MT, LM6584MT reduces component count and interconnect complexity in quad-buffer LCD systems; versus LMH6629MA, it provides essential rail-to-rail DC precision and 3× higher output current required for panel-level capacitive loading, making it uniquely suited for TFT-LCD biasing.
Availability
LM6584MT is available at Aetrix Electronics and suitable for TFT-LCD VCOM driving, gamma voltage buffering, and panel repair amplifier applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LM6584MT 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 high-performance op amps for display, industrial, and automotive markets.
The LM6584MT belongs to TI's precision high-output-current op amp product line, engineered specifically for TFT-LCD panel biasing functions including VCOM drivers, gamma buffers, and repair amplifiers demanding rail-to-rail operation and robust capacitive load drive.
FAQ
What is the maximum continuous output current per channel of the LM6584MT?
The LM6584MT delivers 75mA continuous sourcing or sinking current per amplifier under specified thermal conditions. This rating applies across the full −40°C to +85°C operating temperature range with adequate PCB copper pour or heatsinking. Exceeding this current continuously-especially in the higher-thermal-resistance TSSOP package-may cause junction temperature to exceed 150°C, triggering thermal shutdown or permanent damage. The LM6584MT datasheet confirms this value in both 5V and 13V DC Electrical Characteristics tables.
Does the LM6584MT support true rail-to-rail input operation?
Yes, the LM6584MT supports input common-mode voltage from V− −0.5V to V+ +0.5V, exceeding supply rails by 0.5V in both directions. This is confirmed in the "FEATURES" section and DC Electrical Characteristics tables of the LM6584MT datasheet. However, due to its dual-input-stage architecture (PNP + NPN pairs), input offset voltage transitions near V+ −1V, so designers should avoid sustained operation precisely at that crossover point in high-precision DC applications.
Can the LM6584MT drive a 10nF capacitive load without oscillation?
The LM6584MT remains stable with up to 30pF capacitive load in unity-gain configuration, as stated in the APPLICATION HINTS section. For larger loads like 10nF, stability is restored at higher capacitance (>330nF) due to dominant-pole roll-off, but phase margin degrades between ~100pF and 300nF. Therefore, driving 10nF directly is not recommended without isolation resistance (e.g., 10Ω–50Ω series resistor) or careful layout. The LM6584MT's typical performance curves (Figure 15) confirm instability onset in the 10pF–100pF range.
What is the supply current per amplifier for the LM6584MT at 25°C?
At TA = 25°C and no load, the LM6584MT draws 750μA per amplifier (3mA total for all four), as specified in the "FEATURES" list and verified in the 5V DC Electrical Characteristics table. This value increases to 1.35mA per amplifier at maximum rated supply (13V) and elevated temperature. The low quiescent current enables efficient operation in power-sensitive LCD backlight and timing controller subsystems where multiple LM6584MT units may be deployed.
Which package options are available for the LM6584MT?
The LM6584MT is offered in two industry-standard packages: 14-pin SOIC (package code D) and 14-pin TSSOP (package code PW). Both share identical pinout and electrical specifications, but differ in thermal resistance (SOIC: 145°C/W; TSSOP: 155°C/W) and footprint size. The SOIC variant is preferred for high-power-density applications requiring better heat dissipation, while TSSOP suits space-constrained display module designs. TI's official documentation confirms both are orderable under the LM6584MT part number prefix.
LM6584MT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- 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
LM6584MT FAQ
1.How can I place an order for LM6584MT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6584MT 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 LM6584MT reliable?
The price and inventory of LM6584MT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6584MT is usually 5 days.
3.What payment methods are accepted for LM6584MT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6584MT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6584MT?
LM6584MT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6584MT 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 LM6584MT?
For technical support, including LM6584MT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6584MT requirements.
6.How does Aetrix verify that LM6584MT is sourced from the original manufacturer or authorized distributors?
All LM6584MT 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 LM6584MT meets industry standards.
7.What is the process for return or replacement of LM6584MT?
All LM6584MT units undergo pre-shipment inspection (PSI). If there is an issue with LM6584MT, 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 LM6584MT part is unused and in its original packaging.
Return procedure for LM6584MT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM6584MT Tags
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