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Analog Devices Inc./Maxim Integrated MAX9218ECM+
- Part No.:
- MAX9218ECM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 48-LQFP
- Datasheet:
-
MAX9218ECM+.pdf
- Description:
- IC DESERIALIZER LVDS 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:189
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Product details
Overview
The MAX9218ECM+ from Maxim Integrated is a 27-bit, 7MHz–35MHz DC-balanced LVDS deserializer that converts serial video and control data into parallel outputs: 18-bit RGB video (RGB_OUT[17:0]) during active video and 9-bit control data (CNTL_OUT[8:0]) during blanking. It pairs with the MAX9217 serializer, supports AC-coupled isolation, and operates from +3.3V core and 1.8V–3.3V output supplies in automotive-grade (-40°C to +85°C) LQFP-48 packaging.
For engineers reviewing the MAX9218ECM+ datasheet, MAX9218ECM+ pinout, MAX9218ECM+ application, or MAX9218ECM+ equivalent, this page delivers verified timing parameters, latch-edge selection (R/F), ESD robustness (±10kV contact), dual-phase deserialization, and supply-domain separation-key for in-vehicle display interface design.
Technical Context
The MAX9218ECM+ implements a proprietary DC-balanced encoding/decoding scheme synchronized to a local REFCLK (±2% tolerance), enabling AC coupling and reducing EMI. Its PLL locks first to REFCLK (≤16,385 cycles), then recovers clock from the LVDS stream upon detecting transition words.
It separates data flow into video phase (18 bits + 2 overhead) and control phase (9 bits + 1 overhead), with DE_OUT signaling mode switching. Output transition times scale with frequency range (RNG[1:0]), and staggered RGB_OUT switching minimizes ground bounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Parallel Clock Range | 7MHz to 35MHz - defines minimum/maximum pixel clock rate for LCD/video timing compliance |
| Serial Data Rate | 140Mbps to 700Mbps - scales with parallel clock; 700Mbps at 35MHz enables HD video transport over CAT5e |
| Output Supply Range (VCCO) | 1.8V to 3.3V - allows direct interfacing to 1.8V, 2.5V, or 3.3V logic without level shifters |
| ESD Protection (ISO 10605) | ±10kV contact / ±30kV air - meets automotive system-level ESD requirements for display interfaces |
| Operating Temperature | -40°C to +85°C - qualified for under-hood and dashboard-mounted infotainment modules |
| DC Balance Support | Proprietary encoding with EN[1:0] and EN0 bits - enables AC coupling for galvanic isolation between ECU and display |
| Control Data Error Tolerance | Single-bit error tolerance on C0–C4 via majority voting - improves reliability of camera control signals over noisy cables |
Pinout & Package
The MAX9218ECM+ is housed in a 48-lead LQFP package (package code C48+5), with exposed pad not present (unlike Thin QFN variant). Power domains are isolated: VCC (digital core), VCCO (outputs), VCCPLL (PLL), and VCCLVDS (LVDS receiver).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R/F | Latch edge select input | Configures PCLK_OUT edge (rising/falling) for latching RGB_OUT/CNTL_OUT into downstream FPGA or ASIC |
| RNG[1:0] | Frequency range selector | Sets PLL bandwidth and output transition time (slow/fast) to match serializer PCLK_IN frequency |
| REFCLK | Reference clock input | Local timing reference (±2% tolerance) used for initial PLL lock before serial clock recovery |
| DE_OUT | Data enable output | High = RGB_OUT[17:0] valid; Low = CNTL_OUT[8:0] valid - enables time-multiplexed video/control bus sharing |
| LOCK | Lock status indicator | Low = valid recovered clock and stable outputs; High = loss of lock or power-down state |
| PCLK_OUT | Parallel clock output | Recovered or REFCLK-based clock driving downstream latch; stretched during clock domain transitions |
| RGB_OUT[17:0] | Video data outputs | 18-bit parallel RGB video (6-bit R/G/B or 8/8/2 format); grouped into 3 staggered banks to reduce simultaneous switching noise |
| CNTL_OUT[8:0] | Control data outputs | 9-bit control bus (e.g., camera register writes, backlight commands); C0–C4 tolerate single-bit errors |
| OUTEN | Output enable input | Drives all outputs to high-Z when low - enables busing two MAX9218ECM+ outputs onto one bus |
| PWRDWN | Power-down input | Halts PLL and places outputs in high-Z; reduces supply current to <50µA for low-power standby |
Key Features
| Feature | Design Value |
|---|---|
| DC-balanced deserialization | Enables AC coupling with 0.1µF capacitors - eliminates ground loop issues in long cable runs between head unit and display |
| Separate video/control phases | Uses video blanking intervals to transmit control data - avoids dedicated control lines and preserves full video bandwidth |
| Selectable latch edge (R/F) | Allows synchronization to either rising or falling edge of PCLK_OUT - matches timing requirements of diverse downstream logic families |
| Staggered RGB output switching | Groups RGB_OUT[17:0] into three 6-bit banks switching ~1ns apart - cuts peak current demand and radiated EMI by >6dB |
| Wide output supply range (VCCO) | Supports 1.8V–3.3V logic levels - eliminates need for external voltage translators when interfacing to modern low-voltage FPGAs or SoCs |
Applications
| Navigation System Display | In-Vehicle Entertainment System |
|---|---|
Use Scenario: High-resolution map rendering and turn-by-turn UI on TFT-LCD dash displays with long cable runs (>2m) from head unit. IC Role / Device Role / Timing Role: Deserializes LVDS video stream from central processor and routes RGB + control signals to display timing controller. Use Value: AC coupling isolates display module ground from noisy engine ECU; DE_OUT synchronizes video vs. touch-control updates. | Use Scenario: Dual-display rear-seat entertainment with independent video sources and brightness/backlight control. IC Role / Device Role / Timing Role: Receives serialized video from media processor and delivers parallel RGB + control data to dual display drivers. Use Value: CNTL_OUT[8:0] carries backlight dimming and panel power commands; single-bit error tolerance ensures reliable control over twisted-pair cabling. |
| Video Camera Interface | LCD Display Module |
Use Scenario: Front/rear ADAS camera feed transmitted over shielded twisted pair to ADAS ECU or display processor. IC Role / Device Role / Timing Role: Deserializes camera video and transmits embedded control (e.g., auto-exposure, gain settings) alongside pixel data. Use Value: Majority-voted C0–C4 inputs ensure robust transmission of camera configuration commands despite EMI from motor noise. | Use Scenario: Industrial or automotive LCD panel with integrated timing controller requiring parallel RGB input and sideband control. IC Role / Device Role / Timing Role: Converts serialized video from mainboard into parallel RGB_OUT[17:0] and forwards I²C-like control via CNTL_OUT[8:0]. Use Value: Separate VCCO allows direct 1.8V interface to low-power display ICs; LOCK signal validates data integrity before display update. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS deserializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9218ETM+ | Same die, packaged in 48-pin Thin QFN-EP with thermal pad - lower thermal resistance (37mW/°C derating vs. 21.7mW/°C for LQFP) | Better suited for space-constrained, thermally demanding PCB layouts where LQFP footprint is prohibitive | Select MAX9218ETM+ when board area or junction temperature margin is critical; MAX9218ECM+ preferred for legacy LQFP-compatible designs |
| DS90CR288AMTDX/NOPB | 28-bit LVDS deserializer (vs. 27-bit), no DE_OUT or control-phase support; fixed rising-edge latch only; no RNG[1:0] frequency scaling | Limited to pure video-only links; lacks blanking-time control channel and flexible timing configuration | Choose DS90CR288AMTDX/NOPB only for simple video-only systems without embedded control; MAX9218ECM+ required for video+control integration |
Compared with MAX9218ETM+, the MAX9218ECM+ offers identical functionality in LQFP packaging for easier rework and thermal management in moderate-power displays; versus DS90CR288AMTDX/NOPB, it adds critical control-phase deserialization, latch-edge flexibility, and automotive-grade ESD - essential for modern in-vehicle video systems.
Availability
MAX9218ECM+ is available at Aetrix Electronics and suitable for navigation system displays, in-vehicle entertainment systems, and automotive LCD modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9218ECM+ 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 high-speed interface ICs for automotive, industrial, and communications markets.
The MAX9218ECM+ belongs to Maxim's GMSL/LVDS serializer-deserializer product line, engineered specifically for robust, low-EMI digital video transmission in automotive infotainment and ADAS display interfaces.
FAQ
What is the primary function of the MAX9218ECM+ in an automotive video system?
The MAX9218ECM+ serves as a 27-bit LVDS deserializer that converts high-speed serial video and control data from a remote source (e.g., head unit or camera) into parallel RGB video (RGB_OUT[17:0]) and sideband control signals (CNTL_OUT[8:0]). It enables galvanically isolated, EMI-resistant video transmission over twisted-pair cables in automotive environments - a core function in MAX9218ECM+-based display and camera interface designs.
How does the MAX9218ECM+ handle clock synchronization without an external frame sync signal?
The MAX9218ECM+ uses a two-stage PLL lock process: first locking to the local REFCLK input (±2% tolerance), then recovering the precise serial clock from the LVDS stream upon detecting transition words. The LOCK output goes low only after successful recovery, ensuring MAX9218ECM+ delivers stable, jitter-controlled PCLK_OUT and valid parallel outputs without requiring external frame sync or HS/VS signals.
Can the MAX9218ECM+ interface directly with a 1.8V FPGA I/O bank?
Yes. The MAX9218ECM+ features a dedicated output supply pin (VCCO) supporting 1.8V to 3.3V, allowing its RGB_OUT[17:0], CNTL_OUT[8:0], DE_OUT, PCLK_OUT, and LOCK outputs to drive 1.8V CMOS inputs directly - no level-shifter required. This capability is explicitly specified in the MAX9218ECM+ DC Electrical Characteristics table under VOH/VOL limits at 1.8V VCCO.
What is the purpose of the R/F pin on the MAX9218ECM+?
The R/F pin on the MAX9218ECM+ selects whether parallel data (RGB_OUT[17:0] or CNTL_OUT[8:0]) is latched into the downstream device on the rising edge (R/F = high) or falling edge (R/F = low) of PCLK_OUT. This configurability ensures timing alignment with diverse receiving logic families - a key feature distinguishing MAX9218ECM+ from fixed-edge deserializers like DS90CR288AMTDX/NOPB.
Does the MAX9218ECM+ support AC coupling, and what capacitor value is recommended for 25MHz operation?
Yes, the MAX9218ECM+ supports AC coupling via its DC-balanced encoding and internal 1.2V LVDS bias. For 25MHz parallel clock operation, Figure 12 in the MAX9218ECM+ datasheet specifies a 65nF capacitor per link in a two-capacitor system, or 33nF in a four-capacitor system. These values maintain signal integrity while enabling ground isolation - a validated design requirement for MAX9218ECM+ in automotive display interconnects.
MAX9218ECM+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Deserializer
- Data Rate:
- 700Mbps
- Input Type:
- LVDS
- Output Type:
- LVCMOS, LVTTL
- Number of Inputs:
- 1
- Number of Outputs:
- 27
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
MAX9218ECM+ FAQ
1.How can I place an order for MAX9218ECM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9218ECM+ 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 MAX9218ECM+ reliable?
The price and inventory of MAX9218ECM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9218ECM+ is usually 5 days.
3.What payment methods are accepted for MAX9218ECM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9218ECM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9218ECM+?
MAX9218ECM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9218ECM+ 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 MAX9218ECM+?
For technical support, including MAX9218ECM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9218ECM+ requirements.
6.How does Aetrix verify that MAX9218ECM+ is sourced from the original manufacturer or authorized distributors?
All MAX9218ECM+ 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 MAX9218ECM+ meets industry standards.
7.What is the process for return or replacement of MAX9218ECM+?
All MAX9218ECM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9218ECM+, 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 MAX9218ECM+ part is unused and in its original packaging.
Return procedure for MAX9218ECM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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