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Texas Instruments LM6588MA
- Part No.:
- LM6588MA
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6588MA.pdf
- Description:
- IC AMP TFT-LCD 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,200
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Product details
Overview
LM6588MA from Texas Instruments is a quad, rail-to-rail input/output operational amplifier optimized for TFT-LCD panel VCOM driving and gamma buffering. It delivers ±200mA short-circuit output current, 24MHz −3dB bandwidth, and 11V/μs slew rate while operating from 5V to 16V supplies with only 750μA per amplifier quiescent current. Its 0.5V beyond-rail input range and 50mV-from-rail output swing enable full dynamic range in single- or split-supply LCD bias applications.
For engineers reviewing the LM6588MA datasheet, LM6588MA pinout, LM6588MA application, or LM6588MA equivalent, key selection criteria include verified rail-to-rail operation at 16V, guaranteed 75mA continuous output per channel, SOIC-14 package compatibility, and documented performance in gamma voltage distribution networks under capacitive loads up to 330nF.
Technical Context
The LM6588MA employs a dual-input-stage bipolar architecture: a PNP pair handles inputs from V− −0.5V to ~1V below V+, then an NPN pair extends common-mode range to V+ +0.5V-causing measurable VOS transition near the upper rail. This design enables true rail-to-rail input but requires attention to input stage crossover effects in high-gain configurations.
Its output stage uses complementary bipolar transistors capable of sourcing/sinking ≥170mA (typ. 200mA) peak current while maintaining ≤50mV from supply rails into 2kΩ loads. Stability is ensured across 0–30pF capacitive loads in unity gain, with phase margin of 61° at 5V and 56° at 16V, and re-stabilizes above 330nF due to dominant-pole loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 16V single-supply or ±2.5V to ±8V split-supply - supports standard TFT panel bias rails without level-shifting. |
| Output Short-Circuit Current | ±170mA (min), ±200mA (typ) - sufficient to rapidly charge/discharge VCOM and gamma node capacitances in large-panel LCDs. |
| −3dB Bandwidth | 24MHz (AV = +1) - enables accurate reproduction of gamma correction steps and fast VCOM settling in high-refresh displays. |
| Slew Rate | 11V/μs (5V supply), 15V/μs (16V supply) - ensures sub-300ns 0.1% settling for 2V step signals critical in panel repair buffer roles. |
| Input Common-Mode Range | V− −0.5V to V+ +0.5V - allows direct connection to digital DAC outputs and reference dividers spanning full supply range. |
| Output Voltage Swing | Within 50mV of either rail (RL = 2kΩ) - maximizes usable voltage headroom for precision gamma voltage generation. |
| Quiescent Current | 750μA per amplifier (typ), 1.2mA max - enables low-power operation in multi-channel display timing ICs with tight thermal budgets. |
Pinout & Package
LM6588MA is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) with standard JEDEC MS-012AC footprint and 1.27mm pitch. Thermal resistance θJA is 145°C/W, suitable for industrial temperature operation (−40°C to +85°C) with moderate power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives VCOM or gamma segment node; rated for ±200mA peak current. |
| 2 | IN A− | Inverting input of Amp A - connects to feedback network in inverting configurations or ground in non-inverting buffers. |
| 3 | IN A+ | Non-inverting input of Amp A - accepts gamma reference or VCOM DAC output; supports rail-to-rail common-mode range. |
| 4 | V+ | Positive supply rail - accepts 5V–16V DC or +2.5V–+8V in split-supply mode; requires local 0.1μF + 10μF decoupling. |
| 5 | IN B+ | Non-inverting input of Amp B - used for second gamma voltage or auxiliary panel bias; electrically identical to IN A+. |
| 6 | IN B− | Inverting input of Amp B - provides feedback path; shares same input stage architecture and VOS behavior as IN A−. |
| 7 | OUT B | Amplifier B output - independent channel for parallel gamma string or redundant VCOM drive. |
| 8 | OUT C | Amplifier C output - third channel for multi-string gamma distribution or panel repair signal amplification. |
| 9 | IN C− | Inverting input of Amp C - supports unity-gain buffer or inverting gain configuration with matched layout to IN A−/B−. |
| 10 | IN C+ | Non-inverting input of Amp C - accepts third gamma reference; exhibits same input stage transition behavior near V+. |
| 11 | V− | Negative supply rail - grounded in single-supply mode or connected to −2.5V to −8V in split-supply; more noise-sensitive than V+. |
| 12 | IN D+ | Non-inverting input of Amp D - fourth channel for full gamma string coverage (e.g., 14-string panels using 4× LM6588MA). |
| 13 | IN D− | Inverting input of Amp D - completes quad-channel set; all four amplifiers share identical AC/DC specs and thermal characteristics. |
| 14 | OUT D | Amplifier D output - final channel for gamma voltage distribution or VCOM backup; pin-compatible with OUT A/B/C. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.5V beyond both supply rails - eliminates need for external level-shifting when interfacing with 0–5V or 0–12V DACs. |
| High-output-current rail-to-rail output stage | Delivers ≥75mA continuous and ≥170mA peak per channel - sustains stable gamma voltage under panel capacitance loads >10nF. |
| Unity-gain stability with capacitive load tolerance | Stable with 0–30pF and >330nF loads - accommodates PCB trace capacitance and large panel node capacitance without compensation. |
| Low input offset voltage drift | 5μV/°C (16V) and 10μV/°C (5V) - minimizes gamma voltage error drift across industrial temperature range (−40°C to +85°C). |
| Bipolar VIP10 process with ESD protection | 2.5kV HBM ESD rating - withstands handling in LCD module assembly environments without additional protection circuitry. |
Applications
| LCD Panel VCOM Driver | Gamma Voltage Distribution |
|---|---|
Use Scenario: Generating precise, low-noise common electrode voltage for active-matrix TFT-LCD panels with resolution ≥1920×1080. IC Role / Device Role / Timing Role: Quad op-amp configured as unity-gain buffer for VCOM DAC output; each channel drives one VCOM segment or phase. Use Value: 50mV rail-to-rail output swing and ±200mA peak current ensure <10mV VCOM droop during pixel charging transients, preserving contrast ratio. |
Use Scenario: Distributing 14–20 calibrated gamma reference voltages across TFT panel source driver ICs in high-color-depth displays. IC Role / Device Role / Timing Role: Four independent unity-gain buffers, each delivering one gamma voltage level to dedicated column driver groups. Use Value: 24MHz bandwidth and 270ns 0.1% settling time maintain gamma step fidelity during rapid grayscale transitions in 120Hz+ refresh rates. |
| Panel Repair Signal Amplifier | TFT Display Test & Calibration System |
Use Scenario: Amplifying high-frequency test patterns (e.g., 1–5MHz square waves) injected into defective LCD rows/columns during factory repair. IC Role / Device Role / Timing Role: High-slew-rate buffer driving capacitive fault nodes; operates in AC-coupled mode with DC bias control. Use Value: 11V/μs slew rate and 200mA peak current enable clean 10VPP repair signals into 100pF–1nF panel parasitics without edge rounding. |
Use Scenario: Embedded calibration subsystem in display controller SoCs generating real-time gamma/VCOM adjustments based on temperature and aging sensors. IC Role / Device Role / Timing Role: Quad buffer providing isolated, low-drift references to ADCs and DACs in closed-loop display tuning firmware. Use Value: 750μA per amplifier quiescent current and 5μV/°C VOS drift support battery-powered handheld calibrators with >8-hour runtime and <1mV calibration error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail output current amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM6584MT/NOPB | Single-channel version; identical electrical specs but no channel integration - requires 4× units for quad function. | Larger PCB area, higher component count, and increased inter-channel mismatch vs. monolithic LM6588MA. | Select when board space permits discrete layout or when channel isolation requirements exceed monolithic crosstalk (<−80dB). |
| THS4631D | Higher slew rate (300V/μs) and bandwidth (190MHz), but lower output current (±80mA) and no rail-to-rail input. | Better for wideband signal conditioning; unsuitable for VCOM/gamma where rail-to-rail input and 200mA drive are mandatory. | Choose only for high-frequency repair signal amplification where LM6588MA's 24MHz bandwidth is insufficient. |
Compared with LM6584MT/NOPB, LM6588MA reduces component count and layout complexity by integrating four matched amplifiers in one SOIC-14; versus THS4631D, it trades bandwidth for essential rail-to-rail operation and 2.5× higher output current required in LCD bias applications.
Availability
LM6588MA is available at Aetrix Electronics and suitable for TFT-LCD VCOM driver modules, gamma voltage distribution networks, panel repair equipment, and display calibration systems requiring stable component supply across extended production lifecycles.
Supply support for LM6588MA 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 solutions, with over 50 years of innovation in high-performance op-amps and display interface ICs.
The LM6588MA belongs to TI's precision high-output-current op-amp product line, engineered specifically for TFT-LCD panel biasing applications including VCOM driving, gamma buffering, and panel-level repair signal amplification.
FAQ
What is the maximum continuous output current per channel of the LM6588MA?
The LM6588MA delivers 75mA continuous output current per amplifier (sourcing or sinking) under specified thermal conditions. This value is validated in the Electrical Characteristics tables for both 5V and 16V supply operation and is critical for sustaining gamma voltage levels across large-panel capacitive loads without thermal derating. Exceeding 75mA continuously may cause junction temperature to exceed 150°C, especially in the TSSOP-14 package.
Does the LM6588MA support true rail-to-rail input operation?
Yes, the LM6588MA supports input common-mode voltage from V− −0.5V to V+ +0.5V, confirmed in both DC Electrical Characteristics tables and the Application Notes section. This is achieved via dual PNP/NPN input stages, enabling direct interface with DACs and references operating at the supply rails. However, input offset voltage transitions occur near V+ −1V due to stage handoff, requiring careful design in high-gain configurations.
Can the LM6588MA drive capacitive loads typical of TFT-LCD panels?
Yes, the LM6588MA is characterized for stability with 0–30pF capacitive loads in unity-gain configuration and remains stable again above 330nF due to dominant-pole loading-covering typical panel node capacitances ranging from tens of pF (trace) to hundreds of nF (segment electrodes). The datasheet Figure 14 confirms stability boundaries across supply voltages and load conditions.
What is the guaranteed −3dB bandwidth of the LM6588MA at 16V supply?
The LM6588MA guarantees a minimum −3dB bandwidth of 10MHz and a typical value of 24MHz at AV = +1 with 16V supply, as specified in the 16V AC Electrical Characteristics table. This bandwidth supports fast settling of gamma correction steps and transient-free VCOM updates in high-resolution, high-refresh-rate LCD panels.
Is the LM6588MA pin-compatible with other TI quad op-amps like the LM324?
No, the LM6588MA is not pin-compatible with LM324 or other legacy quad op-amps. It uses a unique 14-pin SOIC pinout optimized for quad rail-to-rail operation (e.g., V+ and V− on pins 4 and 11), differing from LM324's 14-pin DIP/SOIC layout (V+ on pin 4, V− on pin 11, but channel ordering and terminal assignments differ). Direct replacement requires PCB redesign.
LM6588MA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- VIP10™
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- TFT-LCD Panels: Gamma Buffer, VCOM Driver
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 4
- -3db Bandwidth:
- 24 MHz
- Slew Rate:
- 15V/µs
- Current - Supply:
- 800 µA
- Current - Output / Channel:
- 230 mA
- Voltage - Supply, Single/Dual (±):
- 5V ~ 16V, ±2.5V ~ 8V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-SOIC
LM6588MA FAQ
1.How can I place an order for LM6588MA through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6588MA 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 LM6588MA reliable?
The price and inventory of LM6588MA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6588MA is usually 5 days.
3.What payment methods are accepted for LM6588MA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6588MA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6588MA?
LM6588MA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6588MA 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 LM6588MA?
For technical support, including LM6588MA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6588MA requirements.
6.How does Aetrix verify that LM6588MA is sourced from the original manufacturer or authorized distributors?
All LM6588MA 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 LM6588MA meets industry standards.
7.What is the process for return or replacement of LM6588MA?
All LM6588MA units undergo pre-shipment inspection (PSI). If there is an issue with LM6588MA, 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 LM6588MA part is unused and in its original packaging.
Return procedure for LM6588MA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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