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Analog Devices Inc./Maxim Integrated MAX9650ATA+
- Part No.:
- MAX9650ATA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Amps and Modules
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX9650ATA+.pdf
- Description:
- IC AMP TFT-LCD 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,746
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Product details
Overview
The MAX9650ATA+ from Maxim Integrated is a single-channel, rail-to-rail input/output operational amplifier optimized as a high-current VCOM driver for TFT-LCD panels. It delivers ±350mA continuous output current and ±1.3A transient peak current, operates from 6V to 20V supply, and features 40V/µs slew rate and 35MHz bandwidth - enabling stable VCOM voltage control in full-HD, 120Hz LCD displays.
For engineers reviewing the MAX9650ATA+ datasheet, MAX9650ATA+ pinout, MAX9650ATA+ application, or MAX9650ATA+ equivalent, key selection criteria include thermal performance on four-layer PCBs (θJA = 41°C/W), TDFN-EP package compatibility with ground-plane soldering, output short-circuit protection, and thermal shutdown with 15°C hysteresis at +170°C junction temperature.
Technical Context
The MAX9650ATA+ is a BiCMOS-based op amp designed specifically for capacitive backplane driving in large-area TFT-LCDs. Its architecture supports fast settling (<2.0µs to 0.1%) into loads up to 150nF while maintaining stability via internal compensation and external series resistance optimization (RS < 2.2Ω typical).
It functions as a unity-gain buffer with rail-to-rail I/O, 60–80dB CMRR over 0.5V to (VDD – 0.5V) common-mode range, and PSRR of 70–95dB - ensuring minimal VCOM drift under supply ripple. Thermal shutdown activates at +170°C with automatic recovery after 15°C cooldown, matching low-duty-cycle LCD panel timing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 6V to 20V - supports standard TFT panel supplies without external regulation |
| Continuous Output Current | ±350mA per channel - sustains steady-state VCOM bias under panel leakage and parasitic loading |
| Transient Peak Output Current | ±1.3A - handles frame-rate switching transients in 120Hz full-HD displays |
| Slew Rate | 40V/µs - enables sub-microsecond VCOM step response for sharp image transitions |
| Bandwidth | 35MHz (-3dB) - ensures phase margin >60° with 100pF–150nF capacitive loads |
| Quiescent Current | 5mA per channel - balances drive capability with power efficiency in always-on display systems |
| Thermal Resistance (θJA) | 41°C/W (four-layer board) - requires minimal copper area for thermal management in compact LCD bezels |
Pinout & Package
The MAX9650ATA+ is housed in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) internally connected to GND. The EP must be soldered to a PCB ground plane for optimal thermal dissipation (θJC = 8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTA | VCOM output terminal | Drives LCD backplane capacitance; rated for ±1.3A peak into 150nF load |
| 2 - GND | Analog/digital ground reference | Common return path for output current and thermal pad connection |
| 3 - INA+ | Noninverting input | Rail-to-rail capable; 100MΩ input resistance minimizes source loading |
| 4 - INA- | Inverting input | Rail-to-rail capable; matched to INA+ for precision unity-gain buffering |
| 5 - VDD | Positive supply input | Requires local 10µF + 0.1µF bypassing; supports 6V–20V operation |
| 6–7 - N.C. | No internal connection | Unbonded pins; must remain unconnected per datasheet |
| 8 - EP | Exposed thermal pad | Internally tied to GND; mandatory solder connection to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full VDD-to-GND VCOM swing without headroom loss in 19V-panel systems |
| Output short-circuit protection | Prevents latch-up or damage during panel manufacturing shorts or ESD events |
| Thermal shutdown with hysteresis | +170°C trip / +155°C recovery prevents cycling during brief transient overload |
| High CLOAD tolerance | Stable with up to 150nF capacitive load - covers 10"–32" TFT-LCD panel ranges |
| Low input offset voltage | ±14mV max at +25°C; ±17mV over -40°C to +125°C - limits VCOM DC error & image flicker |
Applications
| Large-Screen TFT-LCD Panels | Industrial HMI Displays |
|---|---|
|
Use Scenario: Driving VCOM backplane in 24"–32" full-HD (1920×1080) LCD modules operating at 120Hz refresh rate. IC Role / Device Role / Timing Role: High-current unity-gain buffer that sources/sinks ±1.3A transients to maintain precise VCOM voltage during pixel row updates. Use Value: Enables flicker-free, high-contrast imaging by minimizing VCOM droop and settling delay across wide temperature ranges (-40°C to +125°C). |
Use Scenario: Providing stable VCOM bias in ruggedized medical or factory-floor HMIs exposed to thermal cycling and vibration. IC Role / Device Role / Timing Role: Precision analog driver with thermal shutdown and rail-to-rail operation, ensuring uninterrupted VCOM hold during system power fluctuations. Use Value: Eliminates need for external thermal monitoring circuitry due to integrated +170°C shutdown with 15°C hysteresis and robust 41°C/W θJA on four-layer boards. |
| Automotive Infotainment Displays | Test Equipment VCOM Sources |
|
Use Scenario: VCOM generation in AEC-Q200-compliant automotive center-stack displays requiring extended temperature operation. IC Role / Device Role / Timing Role: Single-channel VCOM amplifier delivering ±350mA continuous current and supporting 6V–20V supply rails common in vehicle battery systems. Use Value: Meets automotive thermal reliability targets via TDFN-EP package with exposed pad soldered to ground plane - achieving 8°C/W θJC and 41°C/W θJA. |
Use Scenario: Programmable VCOM reference source in LCD characterization benches where rapid voltage slewing and low distortion are critical. IC Role / Device Role / Timing Role: High-slew-rate (40V/µs), low-noise op amp used as active VCOM generator with adjustable DC offset and AC modulation capability. Use Value: Supports accurate measurement of panel gamma, response time, and crosstalk using its 35MHz bandwidth and <2.0µs 0.1% settling time into 100nF loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCOM amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9650AUA+ | Same die, μMAX-EP package (8-pin); θJA = 77.6°C/W (four-layer board) | Higher thermal resistance requires larger ground plane or forced airflow vs. TDFN-EP | Select when legacy μMAX footprint compatibility is required and thermal budget allows |
| LM7322MMX/NOPB | Single-channel rail-to-rail op amp; 100mA continuous output, 22V/µs slew rate, no thermal shutdown | Limited to smaller panels (<15") due to lower current and missing protection features | Choose only for cost-sensitive, low-power, non-automotive LCDs where thermal safety is externally managed |
Compared with MAX9650AUA+ and LM7322MMX/NOPB, the MAX9650ATA+ provides superior thermal performance (41°C/W vs. 77.6°C/W or >100°C/W), integrated protection (thermal shutdown + short-circuit), and 3.5× higher peak current - making it the only option qualified for 24"+ 120Hz TFT-LCD VCOM drive without derating.
Availability
MAX9650ATA+ is available at Aetrix Electronics and suitable for large-screen TFT-LCD panels, industrial HMI displays, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX9650ATA+ 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and consumer applications.
The MAX9650ATA+ belongs to Maxim's high-current VCOM amplifier product line, engineered specifically to replace discrete transistor arrays in TFT-LCD timing controllers - delivering integrated protection, thermal robustness, and layout simplicity for panel manufacturers.
FAQ
What is the maximum capacitive load the MAX9650ATA+ can drive stably?
The MAX9650ATA+ is characterized for stable operation with up to 150nF capacitive load when used with recommended series resistance (e.g., RS = 2.2Ω). Its internal compensation and 40V/µs slew rate ensure <2.0µs settling to 0.1% even at full load. For loads exceeding 150nF, stability depends on trace resistance and PCB layout - refer to Figure 2 in the MAX9650ATA+ datasheet for minimum combined ESR/trace resistance guidance.
Does the MAX9650ATA+ require external components for basic operation?
Yes - the MAX9650ATA+ requires two bypass capacitors: a 10µF bulk capacitor (C1) and a 0.1µF ceramic capacitor (C2), both placed as close as possible to the VDD pin. These are mandatory for supply stability under high transient loads. No external feedback resistors are needed for unity-gain VCOM buffering, but a small series resistor (e.g., 2.2Ω) may be added between OUTA and the LCD panel to optimize settling and phase margin with extreme capacitive loads.
How does thermal shutdown work in the MAX9650ATA+?
The MAX9650ATA+ activates thermal shutdown at +170°C junction temperature and automatically recovers when the die cools to +155°C (15°C hysteresis). This behavior is fully specified and tested - not inferred. In typical TFT-LCD use, duty cycles are low enough that the MAX9650ATA+ rarely triggers shutdown, even at full 20V/±1.3A operation, thanks to its TDFN-EP package's 8°C/W θJC and 41°C/W θJA on four-layer boards.
Can the MAX9650ATA+ operate from dual supplies?
Yes - the MAX9650ATA+ supports dual-supply operation from ±4.5V to ±10V. When used in dual-supply mode, both VDD and GND pins require independent 10µF + 0.1µF bypass networks. The exposed pad (EP) may be connected to the negative supply or left floating, though grounding remains preferred for thermal performance. Input common-mode range extends to within 0.5V of either rail, preserving rail-to-rail functionality.
What is the input offset voltage specification for the MAX9650ATA+ over temperature?
The MAX9650ATA+ guarantees input offset voltage of ±17mV over the full -40°C to +125°C operating range, with ±14mV typical at +25°C. This tight specification directly limits VCOM DC error in LCD panels - critical for minimizing image flicker and grayscale inversion. The offset drift versus supply voltage and temperature is characterized in Figures TOC01 and TOC02 of the MAX9650ATA+ datasheet.
MAX9650ATA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-WDFN Exposed Pad
- Series:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Applications:
- TFT-LCD Panels: VCOM Driver
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 1
- -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-TDFN (3x3)
MAX9650ATA+ FAQ
1.How can I place an order for MAX9650ATA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9650ATA+ 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 MAX9650ATA+ reliable?
The price and inventory of MAX9650ATA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9650ATA+ is usually 5 days.
3.What payment methods are accepted for MAX9650ATA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9650ATA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9650ATA+?
MAX9650ATA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9650ATA+ 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 MAX9650ATA+?
For technical support, including MAX9650ATA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9650ATA+ requirements.
6.How does Aetrix verify that MAX9650ATA+ is sourced from the original manufacturer or authorized distributors?
All MAX9650ATA+ 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 MAX9650ATA+ meets industry standards.
7.What is the process for return or replacement of MAX9650ATA+?
All MAX9650ATA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9650ATA+, 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 MAX9650ATA+ part is unused and in its original packaging.
Return procedure for MAX9650ATA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9650ATA+ Tags
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LT6552CS8#PBF
Analog Devices Inc.
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LT6205IS5#TRPBF
Analog Devices Inc.
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LT6206IMS8#TRPBF
Analog Devices Inc.
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LT6552CDD#PBF
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LT6552IS8#PBF
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LT1252CS8#PBF
Analog Devices Inc.
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AD818ARZ-REEL7
Analog Devices Inc.
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MAX4310EUA+
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AD829ARZ
Analog Devices Inc.
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AD810ARZ
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