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Analog Devices Inc./Maxim Integrated MAX9217ECM
- Part No.:
- MAX9217ECM
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 48-LQFP
- Datasheet:
-
MAX9217ECM.pdf
- Description:
- DC-BALANCED LVDS SERIALIZER
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX9217ECM from Maxim Integrated is a 27-bit, 3MHz–35MHz DC-balanced LVDS serializer that converts 18-bit RGB video and 9-bit control data into a single serial stream for automotive display links. It features internal 100Ω LVDS termination, ±10kV ISO 10605 contact ESD protection, and operates from +3.3V core supply with separate 1.8V–3.3V input logic supply. Used in navigation system displays and in-vehicle entertainment systems.
For engineers reviewing the MAX9217ECM datasheet, MAX9217ECM pinout, MAX9217ECM application, or MAX9217ECM equivalent, key selection criteria include its 48-pin LQFP package, -40°C to +85°C automotive-grade temperature range, DC-balanced encoding for AC-coupled STP cable drive up to 10m, and compatibility with MAX9218 deserializer in serial video links.
Technical Context
The MAX9217ECM implements a PLL-based clock recovery architecture synchronized to PCLK_IN (3–35MHz), with programmable frequency-range selection via RNG0/RNG1 inputs. Its proprietary encoding ensures DC balance across serial output, enabling AC coupling and reducing EMI without requiring external line drivers.
It supports dual-phase latching: RGB_IN[17:0] on rising PCLK_IN when DE_IN is high, and CNTL_IN[8:0] when DE_IN is low. Control bits C0–C4 are triple-mapped for single-bit-error tolerance at the deserializer, while C5–C8 are direct-mapped. Transition words manage phase boundaries between video and control data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Parallel Clock Range | 3MHz to 35MHz - defines supported video timing resolutions and pixel rates |
| Differential Output Voltage (VOD) | 250mV to 450mV - ensures robust LVDS signal integrity over 100Ω controlled-impedance traces or STP cables |
| Supply Voltages | +3.3V core (VCC), +1.8V–3.3V input logic (VCCIN), +3.3V LVDS (VCCLVDS), +3.3V PLL (VCCPLL) - enables mixed-voltage system interfacing |
| ESD Protection | ±10kV contact / ±30kV air per ISO 10605 - meets automotive electronics robustness requirements |
| Operating Temperature | -40°C to +85°C - qualified for under-hood and dashboard-mounted automotive applications |
| Power-Down Current | ≤50µA - enables low-power standby mode during display blanking or sleep states |
| Serializer Delay | 3.15× to 3.2× PCLK period - deterministic latency critical for real-time video synchronization |
Pinout & Package
The MAX9217ECM is packaged in a 48-lead LQFP (Lead Pitch: 0.5mm, Body: 7mm × 7mm) with exposed thermal pad not present (unlike Thin QFN variant). Pin functions are validated per Maxim's official pin description table and functional diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,13,37) | Digital & input buffer ground reference | Common return path for digital logic and parallel input buffers; requires low-inductance PCB connection |
| VCCIN (Pin 2) | Input logic supply rail | Accepts 1.71V–3.6V to interface with 1.8V/2.5V/3.3V host video sources without level shifters |
| RGB_IN[17:0] (Pins 3–10,39–48) | 18-bit parallel video data inputs | LVTTL/LVCMOS inputs latched on rising PCLK_IN edge when DE_IN = high; internally pulled down |
| CNTL_IN[8:0] (Pins 11,12,15–21) | 9-bit parallel control data inputs | Latched on rising PCLK_IN when DE_IN = low; C0–C4 support triple-bit mapping for error tolerance |
| DE_IN (Pin 22) | Data enable control | High = video latch mode; low = control latch mode; must toggle for proper phase transition detection |
| PCLK_IN (Pin 23) | Parallel clock input | Provides timing reference for input latching and PLL lock; determines serial data rate via RNG[1:0] configuration |
| PWRDWN (Pin 28) | Power-down control | Active-low input disabling PLL, removing 100Ω termination, and placing LVDS outputs in high-Z state |
| OUT+ / OUT- (Pins 33,32) | Differential LVDS serial output | DC-balanced, internally terminated 100Ω differential pair driving STP or PCB traces up to 10m |
| CMF (Pin 29) | Common-mode filter node | Access point to junction of internal 50Ω resistors; connects optional capacitor to ground for EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary DC-balanced encoding | Enables AC-coupling with standard 0.1µF capacitors, eliminating ground loop issues and common-mode noise in long cable runs |
| Single-bit-error tolerant control mapping | Triple-bit replication of C0–C4 bits allows MAX9218 deserializer to recover correct logic state even if one bit flips during transmission |
| Integrated 100Ω LVDS termination | Eliminates need for external termination resistors, reduces BOM count, and maintains impedance match over process/temperature |
| Separate VCCIN supply domain | Permits direct connection to 1.8V video processors or 3.3V FPGAs without external level translators or voltage droppers |
| Wide ±2% reference clock tolerance | Accommodates oscillator drift and jitter in cost-sensitive automotive clock sources without link failure |
Applications
| Navigation System Display | In-Vehicle Entertainment System |
|---|---|
Use Scenario: High-resolution map rendering and turn-by-turn graphics transmitted from head-unit processor to LCD cluster display. IC Role / Device Role / Timing Role: Serializer converting parallel RGB+control bus into compact LVDS stream over shielded twisted-pair cable. Use Value: Reduces 27-wire harness to 2-wire differential pair, cutting weight, cost, and EMI in constrained dashboard routing. | Use Scenario: Video streaming from media controller to rear-seat monitors or center-stack infotainment display. IC Role / Device Role / Timing Role: Parallel-to-serial bridge supporting variable-rate video (e.g., 640×480@60Hz to 1280×720@30Hz) with embedded sync and status signals. Use Value: DC-balanced encoding sustains signal integrity over >5m STP runs without DC bias accumulation or baseline wander. |
| Video Camera Interface | LCD Display Module |
Use Scenario: Forward-facing ADAS camera output routed to image processing ECU through compact wiring harness. IC Role / Device Role / Timing Role: Serialization of raw Bayer or YUV sensor data with embedded frame sync and exposure control bits. Use Value: Five error-tolerant control inputs reliably convey HSYNC/VSYNC, gain, and shutter commands despite automotive EMI. | Use Scenario: Driving TFT-LCD panels in instrument clusters where space and thermal constraints limit connector count. IC Role / Device Role / Timing Role: Final-stage serializer feeding LVDS receiver inside display module; supports blanking interval control data injection. Use Value: Power-down capability (≤50µA) eliminates idle current draw during display sleep, extending battery runtime in always-on systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9217ETM+ | Same electrical specs but in 48-pin Thin QFN-EP package with exposed thermal pad; no LQFP footprint compatibility | Better thermal performance in space-constrained modules; requires different PCB land pattern and reflow profile | Select MAX9217ETM+ only when thermal dissipation >1.2W is required and LQFP layout cannot be modified. |
| DS90UB925QSQ/NOPB | Fully integrated FPD-Link III serializer with embedded spread-spectrum clocking, higher max data rate (1.5Gbps), and built-in I²C repeater | Supports longer cable runs (>15m), advanced diagnostics, and bidirectional sideband channel; not drop-in compatible | Choose DS90UB925QSQ/NOPB for new designs needing extended reach, EMI reduction beyond DC balance, or system-level diagnostics. |
Compared with MAX9217ETM+, the MAX9217ECM offers identical functionality in LQFP for legacy board reuse and easier hand-soldering; compared with DS90UB925QSQ/NOPB, it provides lower-cost, proven DC-balanced serialization without added complexity-ideal for cost-sensitive, medium-reach automotive displays.
Availability
MAX9217ECM is available at Aetrix Electronics and suitable for navigation system displays, in-vehicle entertainment systems, and automotive video camera interfaces requiring stable component supply across production lifecycles.
Supply support for MAX9217ECM 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 MAX9217ECM belongs to Maxim's automotive-qualified high-speed serializer product line, engineered specifically for reliable, low-EMI video transport in harsh vehicle environments with wide temperature and ESD requirements.
FAQ
What is the maximum cable length supported by the MAX9217ECM?
The MAX9217ECM supports greater than 10m of shielded twisted-pair (STP) cable when used with the MAX9218 deserializer. This is enabled by its DC-balanced encoding, internal 100Ω LVDS termination, and common-mode filter (CMF) pin for EMI suppression. Performance depends on cable quality, termination, and data rate-lower frequencies (e.g., 3–10MHz) achieve longest reach. The MAX9217ECM datasheet confirms this specification under "Features" and "Typical Operating Characteristics."
Does the MAX9217ECM require external termination resistors?
No, the MAX9217ECM includes an internally switched 100Ω differential termination resistor between OUT+ and OUT-. This resistor is automatically enabled when PWRDWN is high and disabled during power-down. External termination is unnecessary and would cause double-termination, degrading signal integrity. The MAX9217ECM design eliminates BOM components and layout area typically needed for discrete 100Ω resistors.
Can the MAX9217ECM interface with 1.8V logic devices?
Yes, the MAX9217ECM accepts 1.8V–3.3V logic levels on all parallel inputs (RGB_IN[17:0], CNTL_IN[8:0], DE_IN, PCLK_IN, etc.) via its dedicated VCCIN supply pin. When VCCIN = 1.8V, VIH(min) = 0.65×VCCIN ≈ 1.17V and VIL(max) = 0.3×VCCIN ≈ 0.54V-fully compatible with standard 1.8V LVTTL/LVCMOS outputs. This eliminates level-shifting circuitry in 1.8V video processor interfaces.
How does the MAX9217ECM handle control data errors?
The MAX9217ECM maps control inputs C0–C4 to three identical bits each in the serialized control word, providing inherent single-bit-error tolerance. At the MAX9218 deserializer, majority voting recovers the correct logic state even if one bit is corrupted. This protects critical signals like HSYNC, VSYNC, or reset commands. C5–C8 are mapped 1:1 and lack this redundancy. This behavior is defined in Tables 1 and 2 of the MAX9217ECM datasheet.
What is the purpose of the CMF pin on the MAX9217ECM?
The CMF (Common-Mode Filter) pin connects to the midpoint of the internal 50Ω + 50Ω LVDS termination network. Adding a capacitor (typically 1nF–10nF) from CMF to ground shunts high-frequency common-mode switching noise to ground, reducing radiated EMI. This is especially effective in noisy automotive environments. The MAX9217ECM datasheet Figure 13 shows the recommended layout, and values are optimized per clock frequency in Figure 12.
MAX9217ECM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 700Mbps
- Input Type:
- LVCMOS, LVTTL
- Output Type:
- LVDS
- Number of Inputs:
- 27
- Number of Outputs:
- 1
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
MAX9217ECM FAQ
1.How can I place an order for MAX9217ECM through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9217ECM 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 MAX9217ECM reliable?
The price and inventory of MAX9217ECM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9217ECM is usually 5 days.
3.What payment methods are accepted for MAX9217ECM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9217ECM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9217ECM?
MAX9217ECM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9217ECM 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 MAX9217ECM?
For technical support, including MAX9217ECM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9217ECM requirements.
6.How does Aetrix verify that MAX9217ECM is sourced from the original manufacturer or authorized distributors?
All MAX9217ECM 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 MAX9217ECM meets industry standards.
7.What is the process for return or replacement of MAX9217ECM?
All MAX9217ECM units undergo pre-shipment inspection (PSI). If there is an issue with MAX9217ECM, 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 MAX9217ECM part is unused and in its original packaging.
Return procedure for MAX9217ECM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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