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Texas Instruments LM6588MA/NOPB
- Part No.:
- LM6588MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6588MA/NOPB.pdf
- Description:
- IC AMP TFT-LCD 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,020
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Product details
Overview
LM6588MA/NOPB 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/NOPB datasheet, LM6588MA/NOPB pinout, LM6588MA/NOPB application, or LM6588MA/NOPB equivalent, key selection criteria include verified 75mA continuous output drive, rail-to-rail operation at 16V supply, SOIC-14 package compatibility, and confirmed suitability for high-capacitance gamma buffer nodes requiring fast settling (270ns, 0.1%) and low THD (−53dBc, 2nd harmonic).
Technical Context
The LM6588MA/NOPB employs a bipolar VIP10 process with dual-input-stage architecture: a PNP pair active from V− −0.5V to ~1V below V+, and an NPN pair enabling operation up to V+ +0.5V. This enables true rail-to-rail input but introduces measurable VOS transition near the upper rail, requiring careful biasing in high-gain configurations.
Its output stage uses complementary bipolar transistors capable of sourcing/sinking ≥170mA (typical) into 2kΩ loads while maintaining 50mV from rails, and sustaining 200mA peak pulses for capacitive gate charging. Stability is ensured across 0–30pF capacitive loads in unity gain, with phase margin of 61° at 5V and 56° at 16V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 16V - supports both single-supply LCD bias rails (e.g., +12V VCOM) and split-supply gamma reference generation (±5V to ±8V). |
| Output Short-Circuit Current | ±200mA - enables direct driving of large-panel VCOM lines and gamma DAC output nodes without external buffers. |
| Continuous Output Current | 75mA - sustains steady-state current for gamma voltage distribution across multiple resistive divider taps. |
| −3dB Bandwidth | 24MHz - ensures fidelity for high-resolution TFT timing signals and repair amp video content up to ~10MHz fundamental. |
| Slew Rate | 11V/μs - achieves 270ns 0.1% settling for ±5V steps, critical for fast gamma correction updates and panel repair transitions. |
| Input Common-Mode Range | V− −0.5V to V+ +0.5V - allows direct connection to digital DAC outputs and reference dividers spanning full supply rails. |
| Output Voltage Swing | Within 50mV of either rail (RL = 2kΩ) - maximizes usable voltage headroom for precise VCOM level setting and gamma curve linearity. |
Pinout & Package
LM6588MA/NOPB is housed in a 14-pin SOIC package (SOIC-14), with thermal resistance θJA = 145°C/W. Pin numbering follows standard JEDEC outline MS-012, with exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 14 | Output (OUT A, OUT C, OUT D, OUT B) | Amplifier outputs - each drives independent VCOM/gamma node; capable of ±200mA peak into capacitive loads. |
| 2, 5, 10, 12 | Inverting Input (IN A−, IN B−, IN C−, IN D−) | Negative inputs - used in inverting configurations (e.g., gamma correction amplifiers) or grounded for unity-gain buffers. |
| 3, 4, 11, 13 | Non-Inverting Input (IN A+, IN B+, IN C+, IN D+) | Positive inputs - accept DC reference voltages or filtered gamma DAC outputs; support 0.5V beyond rails. |
| 7 | Positive Supply (V+) | Main power rail - accepts 5V to 16V; requires local 0.1μF + 10μF decoupling due to high transient current demand. |
| 11 | Negative Supply (V−) | Ground or negative rail - must be low-impedance; PSRR on V− is significantly lower than on V+, demanding careful layout. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input with 0.5V beyond-rail capability | Enables direct interface to 0–16V gamma DAC outputs and VCOM reference dividers without level-shifting circuitry. |
| 75mA continuous output current per amplifier | Supports stable DC bias delivery to high-leakage VCOM buses and multi-tap gamma resistor networks under temperature variation. |
| 270ns 0.1% settling time (AV = −1, ±5V step) | Meets timing requirements for real-time gamma correction in QHD+ and UHD LCD panels with frame-rate updates. |
| 23nV/√Hz input voltage noise at 10kHz | Preserves signal integrity in low-level gamma reference paths where noise directly modulates pixel brightness uniformity. |
| Unity-gain stable with 61° phase margin | Guarantees stability in non-inverting buffer configurations common in VCOM and gamma applications without added compensation. |
Applications
| LCD Panel VCOM Driver | Gamma Reference Buffer |
|---|---|
Use Scenario: Generating stable common electrode voltage for active-matrix LCD panels to control pixel transmittance across temperature and aging. IC Role / Device Role / Timing Role: Quad op-amp configured as unity-gain buffer per VCOM segment; maintains DC accuracy while sourcing/sinking transient panel capacitance currents. Use Value: 75mA continuous output sustains VCOM level under 100nF panel load; 50mV rail-to-rail swing preserves full 12V bias range for contrast optimization. |
Use Scenario: Buffering precision gamma voltage references from DACs to high-impedance resistor ladders defining grayscale voltage levels. IC Role / Device Role / Timing Role: Non-inverting amplifier driving gamma tap points; rejects supply noise and maintains monotonicity during fast grayscale transitions. Use Value: 24MHz bandwidth and 11V/μs slew rate ensure <1% error on 5V gamma steps; 0.5V beyond-rail input accepts full DAC output swing. |
| Panel Repair Amplifier | TFT Gate-Line Bias Buffer |
Use Scenario: Replacing defective gamma/VCOM drivers in field-repair scenarios using modular board-level replacement. IC Role / Device Role / Timing Role: Drop-in quad op-amp substitute for legacy LM6584/LM6585 in existing SOIC-14 footprint designs. Use Value: Pin-compatible with LM6584MA/NOPB; identical SOIC-14 layout; 200mA peak current restores full panel functionality after component failure. |
Use Scenario: Providing regulated gate-line turn-on voltage (e.g., VGH) in driver IC support circuits requiring high-current transient response. IC Role / Device Role / Timing Role: High-slew buffer amplifying gate driver logic signals to overcome trace capacitance and maintain edge integrity. Use Value: 270ns 0.1% settling ensures clean 100ns gate pulse edges; ±200mA drive charges 50pF gate traces within one clock cycle. |
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 |
|---|---|---|---|
| LM6584MA/NOPB | Lower 100mA short-circuit current; 10MHz bandwidth; same SOIC-14 pinout and rail-to-rail I/O. | Insufficient for >15" VCOM lines with >50nF capacitance; limited to smaller panels or lower-speed gamma systems. | Select LM6584MA/NOPB only when 75mA continuous output and 24MHz bandwidth are not required - reduces cost without layout change. |
| LM6585MA/NOPB | Same electrical specs as LM6588MA/NOPB but qualified for extended temperature range (−55°C to +125°C); identical SOIC-14 package. | Required for automotive or industrial displays operating outside −40°C to +85°C commercial grade. | Choose LM6585MA/NOPB for mission-critical displays where junction temperature may exceed 85°C ambient; no design changes needed. |
Compared with LM6584MA/NOPB, LM6588MA/NOPB provides 2× higher output current and 2.4× greater bandwidth for demanding VCOM/gamma loads; compared with LM6585MA/NOPB, it offers identical performance at lower cost for commercial-grade TFT-LCD applications.
Availability
LM6588MA/NOPB is available at Aetrix Electronics and suitable for TFT-LCD VCOM driving, gamma reference buffering, and panel repair amplifier applications requiring stable component supply, long-term lifecycle support, and guaranteed SOIC-14 packaging consistency.
Supply support for LM6588MA/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 company headquartered in Dallas, Texas, designing analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The LM6588MA/NOPB belongs to TI's high-output-current, rail-to-rail op amp product line, engineered specifically for TFT-LCD panel biasing functions including VCOM drivers, gamma buffers, and repair amplifiers in flat-panel display manufacturing.
FAQ
What is the maximum continuous output current specification for LM6588MA/NOPB?
The LM6588MA/NOPB is rated for 75mA continuous output current per amplifier under specified thermal conditions (TA ≤ 85°C, SOIC-14 package). This value is confirmed in the 16V DC Electrical Characteristics table and applies to sustained DC loading such as gamma reference distribution. Exceeding this current continuously risks exceeding the 150°C maximum junction temperature, especially in the higher-thermal-resistance TSSOP variant.
Does LM6588MA/NOPB support true rail-to-rail input operation, and what does that mean for my gamma DAC interface?
Yes, LM6588MA/NOPB supports input common-mode voltage from V− −0.5V to V+ +0.5V, verified in both 5V and 16V operating tables. This allows direct connection to gamma DAC outputs spanning the full supply range (e.g., 0–12V), eliminating level-shifters. However, input offset voltage transitions near V+ −1V due to dual-input-stage architecture, so avoid placing critical DC references within 1V of the positive rail to prevent VOS discontinuity.
Can LM6588MA/NOPB drive a 100nF capacitive load in unity-gain configuration without oscillation?
LM6588MA/NOPB remains stable with up to 30pF capacitive load in unity gain, as stated in the Application Hints section. For 100nF loads, stability is restored due to dominant-pole attenuation - confirmed by the "Stability vs. Capacitive Load" plot (Figure 14) showing stable operation at 330nF and higher. Use series isolation resistors (10–50Ω) between output and load if marginal phase margin is observed in your PCB layout.
What is the typical settling time of LM6588MA/NOPB for a ±5V step in inverting configuration?
The LM6588MA/NOPB achieves 270ns 0.1% settling time for a ±5V step with AV = −1 and RL = 500Ω, as measured in the 5V AC Electrical Characteristics table. This performance is maintained across the full −40°C to +85°C temperature range and is critical for gamma correction updates synchronized to display frame rates. Settling degrades slightly under heavier loads - e.g., 780ns at RL = 500Ω with ±5V step in AV = −1 configuration per 16V AC table.
Is LM6588MA/NOPB pin-compatible with LM6584MA/NOPB, and can I use it as a drop-in replacement?
Yes, LM6588MA/NOPB shares identical SOIC-14 pinout, terminal functions, and footprint with LM6584MA/NOPB, as confirmed by the Connection Diagram and Pin Configuration table. It is a functional upgrade: same rail-to-rail I/O, but with 2× higher short-circuit current (±200mA vs. ±100mA) and 2.4× greater bandwidth (24MHz vs. 10MHz). No PCB changes are required, though verify thermal margin given higher output capability.
LM6588MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- VIP10™
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- 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/NOPB FAQ
1.How can I place an order for LM6588MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6588MA/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 LM6588MA/NOPB reliable?
The price and inventory of LM6588MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6588MA/NOPB is usually 5 days.
3.What payment methods are accepted for LM6588MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6588MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6588MA/NOPB?
LM6588MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6588MA/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 LM6588MA/NOPB?
For technical support, including LM6588MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6588MA/NOPB requirements.
6.How does Aetrix verify that LM6588MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LM6588MA/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 LM6588MA/NOPB meets industry standards.
7.What is the process for return or replacement of LM6588MA/NOPB?
All LM6588MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM6588MA/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 LM6588MA/NOPB part is unused and in its original packaging.
Return procedure for LM6588MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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