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Analog Devices Inc./Maxim Integrated MAX9278AGTM/VY+
- Part No.:
- MAX9278AGTM/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
MAX9278AGTM/VY+.pdf
- Description:
- 3.12GBPS GMSL DESERIALIZERS FOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
MAX9278AGTM/VY+ from Maxim Integrated is a 3.12Gbps GMSL deserializer for automotive video links, receiving serialized data over 50Ω coax or 100Ω STP cable and outputting deserialized LVDS video/audio on three of four oLDI lanes. It supports 104MHz high-bandwidth mode (1920×720p/60Hz, 24-bit color), 32kHz–192kHz audio with up to 32-bit depth, and operates from -40°C to +105°C.
For engineers reviewing the MAX9278AGTM/VY+ datasheet, MAX9278AGTM/VY+ pinout, MAX9278AGTM/VY+ application, or MAX9278AGTM/VY+ equivalent, key selection considerations include coax/STP input compatibility, HDCP-free operation (vs. MAX9282A), embedded control channel UART/I2C modes up to 1Mbps, programmable cable equalization for 15m full-speed runs, and LVDS output spread spectrum for EMI reduction.
Technical Context
The MAX9278AGTM/VY+ implements a CDR-based serial link receiver with 7x PLL architecture, supporting both 4-channel (9b10b) and 9b10b-encoded data formats. Its reverse control channel operates in UART-to-UART, UART-to-I2C, or I2C-to-I2C modes with clock-stretch capability and high-immunity mode for noise rejection.
It integrates a built-in PRBS tester for BER validation, color lookup table (LUT) for gamma correction, and dedicated GPI for touch-screen interrupt handling. The device uses a CML receiver with programmable equalizer and supports HS/VS/DE tracking for precise video timing alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Serial Bit Rate | Up to 3.12Gbps - enables transmission of 720p60 video with 24-bit color over single coax cable. |
| Pixel Clock Range | 6.25MHz to 104MHz - supports resolutions from WVGA to 1920×720p at 60Hz in high-bandwidth mode. |
| Audio Support | L-PCM I2S stereo or 8-channel TDM up to 192kHz/32-bit - delivers HD 7.1 audio synchronized with video stream. |
| Control Channel Speed | 9.6kbps to 1Mbps - allows real-time register programming of serializer, deserializer, and peripherals independent of video timing. |
| Operating Temperature | -40°C to +105°C - qualified for under-hood and display module placement in automotive environments. |
| ESD Protection | ±8kV contact / ±15kV air per ISO 10605 and IEC 61000-4-2 - ensures robustness in noisy vehicle harnesses. |
| Supply Voltage | Core: 3.0V–3.6V; I/O: 1.7V–3.6V - supports flexible power domain partitioning in multi-rail systems. |
Pinout & Package
The MAX9278AGTM/VY+ is housed in a lead-free, 48-pin, 7mm × 7mm TQFN/SWTQFN package with exposed pad and 0.5mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN- | Differential Serial Input | Accepts GMSL serialized data from coax or STP; includes programmable equalizer for cable loss compensation. |
| TXOUT0+/− to TXOUT2+/− | LVDS Video Data Outputs | Three of four configurable oLDI lanes delivering deserialized parallel video data (RGB[23:0]) in LVDS format. |
| VS, HS, DE | Video Timing Outputs | Provide vertical sync, horizontal sync, and data enable signals aligned to deserialized pixel data for display interface timing. |
| SCL, SDA | I2C Interface | Enable local microcontroller access to internal registers; support I2C-to-I2C control channel mode up to 1Mbps. |
| GPIO0, GPIO1 | General-Purpose I/O | Configurable as outputs for display power-up sequencing or backlight control; support push-pull or open-drain modes. |
| GPI | Touch-Screen Interrupt Input | Continuously sampled input for low-latency touch controller interrupt signaling in infotainment displays. |
| INTOUT | Interrupt Output | Asserts on lock loss, error detection, or configuration events; used for system-level fault monitoring and recovery. |
| LOCK | Link Lock Indicator | Open-drain output signaling stable CDR lock; used for power management and system readiness verification. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Cable Equalizer | Compensates up to 15m of coax or STP at full 3.12Gbps rate, eliminating need for repeaters in mid-length automotive links. |
| Embedded Control Channel | UART/I2C bidirectional interface operating up to 1Mbps enables remote register access without disrupting video timing or requiring separate control wiring. |
| Color Lookup Table (LUT) | Gamma correction LUT with programmable bit width supports display-specific color calibration without external FPGA or processor intervention. |
| PRBS Built-In Self-Test | On-chip pseudo-random bit sequence generator and checker validates serial link integrity during production test or field diagnostics. |
| Spread Spectrum LVDS Output | Reduces peak EMI by spreading LVDS clock energy across narrow band, easing compliance with CISPR 25 Class 5 radiated emissions limits. |
| Dedicated Touch-Screen GPI | Hardware-accelerated interrupt path with sub-microsecond latency enables responsive touch UI in rear-seat displays without CPU polling overhead. |
Applications
| High-Resolution Automotive Navigation | Rear-Seat Infotainment |
|---|---|
Use Scenario: Central display unit receiving video from front camera and surround-view processors via coax cabling. IC Role / Device Role / Timing Role: Deserializes GMSL video streams and reconstructs RGB timing (HS/VS/DE) for LCD driver IC interface. Use Value: Enables single-cable video + control + power delivery, reducing harness weight and connector count versus parallel RGB solutions. |
Use Scenario: Passenger entertainment screen driven by media processor over shielded twisted-pair cable. IC Role / Device Role / Timing Role: Receives compressed video and 7.1-channel audio; outputs synchronized LVDS video and I2S/TDM audio to display and audio codec. Use Value: Supports 192kHz/32-bit audio with video, meeting premium audio fidelity requirements while maintaining deterministic latency. |
| Megapixel Camera Systems | ADAS Display Fusion Units |
Use Scenario: Rearview camera module transmitting raw 1MP image data to head unit over FAKRA coax. IC Role / Device Role / Timing Role: Deserializes high-speed camera feed and provides frame-sync (VS) output for time-aligned image processing. Use Value: Achieves <1µs jitter on VS output, enabling precise timestamping for object detection algorithms. |
Use Scenario: Domain controller merging video feeds from multiple cameras and sensors into unified HUD or instrument cluster output. IC Role / Device Role / Timing Role: Aggregates multiple GMSL deserialized streams; uses reverse control channel to configure upstream serializers dynamically. Use Value: Allows runtime reconfiguration of camera resolution/framerate without firmware update, supporting OTA feature upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GMSL deserializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9278A/VY+ | No /VY+ suffix; same die but different tape-and-reel packaging and moisture sensitivity level (MSL3 vs MSL1). | Identical electrical and thermal performance; differs only in packaging logistics and factory handling requirements. | Select MAX9278AGTM/VY+ for automated SMT assembly with extended floor life and humidity-safe packaging. |
| MAX9282A/VY+ | Includes HDCP 1.4 decryption engine and associated key storage; otherwise pin- and function-compatible. | Required for content-protected video sources (e.g., digital broadcast tuners); adds ~15mW static power and larger ROM footprint. | Choose MAX9278AGTM/VY+ when HDCP is unnecessary-reducing BOM cost, power, and security certification overhead. |
Compared with MAX9278A/VY+ and MAX9282A/VY+, the MAX9278AGTM/VY+ offers identical core deserialization functionality with enhanced packaging for high-reliability SMT manufacturing, while avoiding HDCP-related complexity and cost where content protection is not mandated.
Availability
MAX9278AGTM/VY+ is available at Aetrix Electronics and suitable for high-resolution automotive navigation, rear-seat infotainment, and megapixel camera systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9278AGTM/VY+ 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, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX9278AGTM/VY+ belongs to Maxim's GMSL serializer/deserializer product line, engineered specifically for high-bandwidth, low-latency, EMI-resilient video transport in automotive ADAS and infotainment systems.
FAQ
What is the primary function of the MAX9278AGTM/VY+ in an automotive video system?
The MAX9278AGTM/VY+ functions as a gigabit multimedia serial link (GMSL) deserializer that receives high-speed serialized video and audio over coax or STP cable and outputs deserialized LVDS video data along with synchronized timing signals (HS/VS/DE) and I2S/TDM audio. It enables compact, EMI-robust video distribution in automotive displays and camera systems without requiring HDCP support.
Does the MAX9278AGTM/VY+ support HDCP content protection?
No, the MAX9278AGTM/VY+ does not include HDCP decryption capability. It is the non-HDCP variant of the family; the MAX9282A/VY+ is the functionally identical part with integrated HDCP 1.4 support. The MAX9278AGTM/VY+ is intended for applications where content protection is not required, such as camera feeds or internally generated navigation graphics.
What cable types and maximum lengths are supported by the MAX9278AGTM/VY+ at full 3.12Gbps data rate?
The MAX9278AGTM/VY+ supports both 50Ω coax (e.g., FAKRA) and 100Ω shielded twisted-pair (STP) cables. With its programmable cable equalizer enabled, it reliably achieves full 3.12Gbps operation over up to 15 meters of standard automotive coax cable, eliminating the need for signal repeaters in most vehicle architectures.
How does the reverse control channel of the MAX9278AGTM/VY+ operate, and what interfaces does it support?
The MAX9278AGTM/VY+ reverse control channel operates at speeds from 9.6kbps to 1Mbps and supports UART-to-UART, UART-to-I2C, and I2C-to-I2C modes. It allows a microcontroller to read/write registers of the deserializer, serializer, or downstream peripherals independently of video timing-enabling dynamic configuration, diagnostics, and HDCP management (on compatible variants).
What are the key thermal and reliability specifications of the MAX9278AGTM/VY+ for automotive deployment?
The MAX9278AGTM/VY+ is rated for continuous operation from -40°C to +105°C ambient temperature and features ±8kV contact / ±15kV air ESD protection per ISO 10605 and IEC 61000-4-2. Its 48-pin TQFN package with exposed pad ensures efficient thermal dissipation in space-constrained display modules and camera ECUs.
MAX9278AGTM/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Deserializer
- Data Rate:
- 3.12Gbps
- Input Type:
- CML
- Output Type:
- CML
- Number of Inputs:
- 3
- Number of Outputs:
- 1
- Voltage - Supply:
- 1.7V ~ 1.9V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFN (7x7)
MAX9278AGTM/VY+ FAQ
1.How can I place an order for MAX9278AGTM/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9278AGTM/VY+ 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 MAX9278AGTM/VY+ reliable?
The price and inventory of MAX9278AGTM/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9278AGTM/VY+ is usually 5 days.
3.What payment methods are accepted for MAX9278AGTM/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9278AGTM/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9278AGTM/VY+?
MAX9278AGTM/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9278AGTM/VY+ 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 MAX9278AGTM/VY+?
For technical support, including MAX9278AGTM/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9278AGTM/VY+ requirements.
6.How does Aetrix verify that MAX9278AGTM/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX9278AGTM/VY+ 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 MAX9278AGTM/VY+ meets industry standards.
7.What is the process for return or replacement of MAX9278AGTM/VY+?
All MAX9278AGTM/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9278AGTM/VY+, 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 MAX9278AGTM/VY+ part is unused and in its original packaging.
Return procedure for MAX9278AGTM/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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