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Analog Devices Inc./Maxim Integrated MAX9651AUA+T
- Part No.:
- MAX9651AUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Amps and Modules
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX9651AUA+T.pdf
- Description:
- IC AMP TFT-LCD 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,458
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Product details
Overview
MAX9651AUA+T from Maxim Integrated is a dual-channel rail-to-rail input/output VCOM amplifier optimized for TFT-LCD panel backplane drive, delivering ±1.3A transient peak output current per channel, 40V/μs slew rate, and 35MHz bandwidth at up to 20V supply - enabling stable 120Hz frame-rate operation in full HD television displays.
For engineers reviewing the MAX9651AUA+T datasheet, MAX9651AUA+T pinout, MAX9651AUA+T application, or MAX9651AUA+T equivalent, this page delivers verified package mapping (8-pin μMAX-EP), thermal performance data (θJA = 77.6°C/W on four-layer board), output short-circuit protection, and thermal shutdown with 15°C hysteresis - all critical for high-reliability LCD timing design.
Technical Context
The MAX9651AUA+T implements a BiCMOS-based high-current op-amp architecture with matched input stages and low-offset voltage amplification (±17mV over –40°C to +125°C), designed specifically to source/sink fast transient currents into large capacitive VCOM loads (up to 150nF) without oscillation. Its internal thermal shutdown activates at +170°C with automatic recovery after 15°C cooldown.
It operates from a single 6V–20V supply or dual ±4.5V–±10V supplies, features 70dB–95dB PSRR across its operating range, and maintains 60dB–80dB CMRR over 0.5V to (VDD – 0.5V) common-mode input range - ensuring robust rejection of supply and display noise in high-voltage LCD biasing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±1.3A per channel - sustains rapid charge/discharge of large TFT-LCD VCOM capacitance during frame transitions. |
| Slew Rate | 40V/μs - enables sub-2μs settling to 0.1% for 1A load steps, meeting 120Hz timing budgets. |
| Bandwidth | 35MHz (-3dB) - supports full HD resolution with minimal phase lag in closed-loop VCOM regulation. |
| Supply Voltage Range | 6V to 20V single supply - compatible with standard LCD panel power rails including 19V VDD systems. |
| Quiescent Current | 5mA per channel - balances low static power with high dynamic drive capability for energy-efficient panels. |
| Input Offset Voltage | ±17mV max over –40°C to +125°C - ensures precise DC VCOM level control across automotive and industrial temperature ranges. |
| Thermal Shutdown Threshold | +170°C with 15°C hysteresis - protects against sustained overload while allowing recovery without system reset. |
Pinout & Package
The MAX9651AUA+T is housed in an 8-pin μMAX-EP (exposed pad) package (Outline 21-0107, Land Pattern 90-0145), with the exposed pad internally connected to GND and requiring soldering to a PCB ground plane for optimal thermal dissipation (θJC = 5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | VCOM output channel A - drives first TFT-LCD panel backplane segment with ±1.3A capability. |
| 2 | GND | Analog/digital ground reference - shared return path for both channels and exposed pad connection point. |
| 3 | INA+ | Noninverting input channel A - accepts VREF or feedback signal for closed-loop VCOM regulation. |
| 4 | INA- | Inverting input channel A - connects to VCOM node for error amplification in unity-gain buffer configuration. |
| 5 | VDD | Positive supply input - requires local 10μF + 0.1μF bypassing to sustain transient current delivery. |
| 6 | INB+ | Noninverting input channel B - independent reference input for second VCOM control loop. |
| 7 | INB- | Inverting input channel B - connects to second VCOM node for dual-panel or split-panel biasing. |
| 8 | OUTB | VCOM output channel B - independently drives second TFT-LCD backplane segment. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full 0V–20V VCOM swing without headroom loss, maximizing contrast ratio in wide-voltage LCDs. |
| Exposed thermal pad | Reduces θJA to 77.6°C/W (four-layer board), permitting continuous 80mA output without thermal derating. |
| Output short-circuit protection | Prevents latch-up or damage during panel manufacturing defects or ESD-induced VCOM shorts. |
| Stable with 150nF load | Eliminates need for external compensation in most TFT-LCD designs, reducing BOM count and layout complexity. |
| Low input bias current (0.01–1µA) | Maintains accuracy when driving high-impedance VREF dividers or resistive feedback networks. |
Applications
| Large-Screen TFT-LCD TVs | Automotive Instrument Clusters |
|---|---|
|
Use Scenario: Driving VCOM backplane of 55-inch 4K LCD TV panels operating at 120Hz refresh rate with 0.1µF total capacitance. IC Role / Device Role / Timing Role: Dual-channel VCOM amplifier providing synchronized, high-current bias to maintain pixel voltage stability across entire display area. Use Value: 40V/μs slew rate and 35MHz bandwidth ensure <2µs settling per frame transition, eliminating ghosting and vertical banding artifacts. |
Use Scenario: Biasing segmented LCD gauges and digital readouts in vehicle dashboards exposed to -40°C to +125°C ambient conditions. IC Role / Device Role / Timing Role: Precision VCOM regulator maintaining DC offset integrity despite engine vibration, EMI, and wide supply fluctuations (6V–16V). Use Value: ±17mV input offset voltage drift and 70dB+ PSRR suppress battery ripple and alternator noise, preserving display readability. |
| Industrial HMI Panels | Medical Diagnostic Displays |
|
Use Scenario: Controlling VCOM voltage in 15.6-inch industrial touchscreens used in factory automation with 24/7 operation cycles. IC Role / Device Role / Timing Role: High-reliability VCOM driver with thermal shutdown and short-circuit protection for unattended long-duration operation. Use Value: +170°C thermal shutdown with 15°C hysteresis prevents catastrophic failure during extended high-load periods, supporting >10-year MTBF. |
Use Scenario: Stabilizing VCOM in 24-inch diagnostic monitors requiring Class II medical-grade image fidelity and zero visual artifacts. IC Role / Device Role / Timing Role: Low-noise, low-drift VCOM amplifier ensuring consistent grayscale reproduction across clinical imaging workflows. Use Value: 60dB–80dB CMRR rejects common-mode interference from adjacent MRI or ultrasound equipment, preserving DICOM calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCOM amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9651ATA+ | TDFN-EP package (8-pin), lower θJA = 41°C/W, higher thermal performance than μMAX-EP; same electrical specs. | Better suited for high-power-density layouts where PCB space is constrained and thermal management is prioritized. | Select MAX9651ATA+ when board layer count supports aggressive copper pour under TDFN-EP and peak power exceeds 1.5W. |
| LMH6723MA/NOPB | Single-channel, 1.2A peak output, 300MHz GBW, no thermal shutdown or short-circuit protection; SOIC-8 package. | Lacks integrated protection and dual-channel integration - requires two devices and external safety circuitry for equivalent functionality. | Choose LMH6723MA/NOPB only for non-safety-critical, low-capacitance (<50nF), high-bandwidth analog test equipment where cost outweighs reliability. |
Compared with MAX9651AUA+T, MAX9651ATA+ offers superior thermal resistance for sustained high-current operation, while LMH6723MA/NOPB trades protection and integration for raw speed - making MAX9651AUA+T the optimal balance of safety, dual-channel efficiency, and LCD-specific drive capability.
Availability
MAX9651AUA+T is available at Aetrix Electronics and suitable for large-screen TFT-LCD TVs, automotive instrument clusters, and industrial HMI panels requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for MAX9651AUA+T 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
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for demanding industrial, automotive, and consumer applications.
The MAX9650/MAX9651 product line was engineered specifically for high-current, high-stability VCOM biasing in modern TFT-LCD panels - addressing the need for fast settling, thermal resilience, and integrated protection in compact packages.
FAQ
What is the maximum continuous output current rating for MAX9651AUA+T?
The MAX9651AUA+T is rated for 80mA continuous output current per channel under typical thermal conditions (TA = +70°C, μMAX-EP package on four-layer board). This value is derived from its 1030.9mW continuous power dissipation limit and thermal resistance (θJA = 77.6°C/W), ensuring safe operation without thermal shutdown during steady-state VCOM biasing. The ±1.3A rating applies only to transient peak current.
Does MAX9651AUA+T require external compensation for stability with large capacitive loads?
No - the MAX9651AUA+T is internally compensated to remain stable with capacitive loads up to 150nF without external components. Its design incorporates frequency compensation optimized for TFT-LCD VCOM drive, and application notes confirm stable operation with 0.1µF panel capacitance using only recommended 2.2Ω series resistance for settling optimization. External compensation is unnecessary in standard implementations.
Can MAX9651AUA+T operate from a dual-supply configuration?
Yes - the MAX9651AUA+T supports dual-supply operation from ±4.5V to ±10V. Its rail-to-rail input/output architecture allows full signal swing across the dual-rail range, and the datasheet specifies electrical characteristics under both single-supply (6V–20V) and dual-supply conditions. Ground (Pin 2) serves as the reference node, and the exposed pad must be connected to the system ground plane regardless of supply topology.
What is the purpose of the exposed pad (EP) on the MAX9651AUA+T package?
The exposed pad (EP) on the MAX9651AUA+T is internally connected to GND and serves as the primary thermal conduction path from the die to the PCB. Soldering EP to a solid ground plane reduces junction-to-ambient thermal resistance to 77.6°C/W (four-layer board), enabling reliable operation at elevated ambient temperatures. It is not optional - omitting EP grounding risks thermal shutdown during sustained output current delivery.
How does the thermal shutdown with hysteresis function in MAX9651AUA+T?
The MAX9651AUA+T activates thermal shutdown at +170°C junction temperature and remains off until the die cools by 15°C (to +155°C), at which point it automatically resumes operation. This hysteresis prevents rapid cycling during marginal thermal conditions. In typical TFT-LCD use, low duty-cycle VCOM updates keep average power low, so shutdown occurs only during fault conditions like sustained short-circuit or inadequate heatsinking - protecting both MAX9651AUA+T and the connected panel.
MAX9651AUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- TFT-LCD Panels: VCOM Driver
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 2
- -3db Bandwidth:
- 35 MHz
- Slew Rate:
- 40V/µs
- Current - Supply:
- 3.7 mA
- Current - Output / Channel:
- 1.3 A
- Voltage - Supply, Single/Dual (±):
- 9V ~ 20V, ±4.5V ~ 10V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-uMAX-EP|8-uSOP-EP
MAX9651AUA+T FAQ
1.How can I place an order for MAX9651AUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9651AUA+T 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 MAX9651AUA+T reliable?
The price and inventory of MAX9651AUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9651AUA+T is usually 5 days.
3.What payment methods are accepted for MAX9651AUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9651AUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9651AUA+T?
MAX9651AUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9651AUA+T 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 MAX9651AUA+T?
For technical support, including MAX9651AUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9651AUA+T requirements.
6.How does Aetrix verify that MAX9651AUA+T is sourced from the original manufacturer or authorized distributors?
All MAX9651AUA+T 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 MAX9651AUA+T meets industry standards.
7.What is the process for return or replacement of MAX9651AUA+T?
All MAX9651AUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9651AUA+T, 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 MAX9651AUA+T part is unused and in its original packaging.
Return procedure for MAX9651AUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9651AUA+T Tags
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