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Analog Devices Inc./Maxim Integrated MAX3815CCM+D
- Part No.:
- MAX3815CCM+D
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Processing
- Package:
- 48-TQFP Exposed Pad
- Datasheet:
-
MAX3815CCM+D.pdf
- Description:
- IC VIDEO EQUALIZER 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,388
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Product details
Overview
MAX3815CCM+D from Maxim Integrated is a TMDS digital video equalizer IC designed for DVI/HDMI cable signal recovery at the receiver end of high-speed serial video links. It features four CML-differential I/O channels (three data + one clock), automatic or manual equalization up to 40dB at 825MHz, 3.3V supply operation, and supports TMDS data rates from 250Mbps to 1.65Gbps. It extends usable DVI/HDMI cable length to 36 meters over 28 AWG shielded twisted pair.
For engineers reviewing the MAX3815CCM+D datasheet, MAX3815CCM+D pinout, MAX3815CCM+D application, or MAX3815CCM+D equivalent, this device is critical for maintaining signal integrity in high-definition display interconnects where cable-induced skin-effect loss degrades eye opening and increases jitter - especially in projector inputs, active cable assemblies, and LCD monitor receivers requiring deterministic jitter <120ps p-p after 205ft cable.
Technical Context
The MAX3815CCM+D implements three independent adaptive equalizers per data channel and one dedicated clock path with loss-of-clock detection. Its CML input buffers accept 800–1400mVP-P differential swing, while output drivers support dual amplitude modes (1000mVP-P or 500mVP-P) via LVTTL-controlled OUTLEVEL.
It integrates a squelch-capable open-collector CLKLOS output, power-down control (PWRDWN), and EQCONTROL voltage-based manual equalization tuning. The IC operates across 0°C to +70°C, dissipates 0.6W typical, and uses internal limiting amplifiers to regenerate clean logic levels before CML output buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +3.0V to +3.6V - ensures compatibility with standard 3.3V digital video system rails and tolerance to supply ripple up to 200mVP-P DC–500kHz. |
| TMDS Data Rate Support | 250Mbps to 1.65Gbps - covers all DTV resolutions (480i to 1080p) and computer formats (VGA to UXGA) without retiming or protocol translation. |
| Equalization Range | Up to 40dB at 825MHz - compensates skin-effect loss in copper cables up to 205ft (62.5m) of GORE 89 or 120ft (36.6m) of 28 AWG STP. |
| Differential Input Swing | 800–1400mVP-P - matches degraded TMDS signals from long cables while maintaining >45Ω single-ended input resistance for impedance stability. |
| Residual Output Jitter | ≤120ps p-p at 1.65Gbps - defined as DJ + 14.2×RJ, enabling reliable bit-error-free operation after 36m DVI-D cable runs. |
| Power Dissipation | 0.6W typical - enables use in thermally constrained display enclosures without forced air cooling when operating at full bandwidth. |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade front-projector inputs, HDMI extender modules, and LCD monitor receiver boards. |
Pinout & Package
The MAX3815CCM+D is housed in a 7mm × 7mm, 48-pin TQFP-EP package with exposed thermal pad (EP) soldered to PCB ground. Pin 1 is located at top-left corner (pin 1 marker dot adjacent to pin 1); pins numbered counterclockwise. Exposed pad must be electrically and thermally connected to solid ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX0_IN+/RX0_IN− RX1_IN+/RX1_IN− RX2_IN+/RX2_IN− RXC_IN+/RXC_IN− |
CML differential inputs (data ×3, clock ×1) | Accept degraded TMDS signals from cable; internally terminated to 50Ω per side; require external 100Ω differential routing. |
| RX0_OUT+/RX0_OUT− RX1_OUT+/RX1_OUT− RX2_OUT+/RX2_OUT− RXC_OUT+/RXC_OUT− |
CML differential outputs (data ×3, clock ×1) | Drive ASIC-side TMDS receivers; amplitude selectable (1000mVP-P or 500mVP-P) via OUTLEVEL; open-collector disable via OUTON. |
| CLKLOS | LVTTL open-collector loss-of-clock indicator | Asserts low when differential clock amplitude falls below 50mVP-P; used for link health monitoring or automatic squelch via inverter to OUTON. |
| EQCONTROL | Analog voltage-controlled equalization level input | GND = auto mode; VCC/2 = min EQ; VCC−1V to VCC = manual tuning - maps linearly to cable length compensation (e.g., 0–200ft). |
| PWRDWN, OUTLEVEL, OUTON | LVTTL control inputs | PWRDWN = high-active power-down (10mA standby); OUTLEVEL = output amplitude select; OUTON = output enable/disable (differential zero when high). |
| VCC / GND / EP | Power, reference, and thermal interface | All 12 VCC pins must be decoupled locally; 10 GND pins provide low-inductance return; EP is ground and mandatory for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Fully automatic equalization up to 40dB at 825MHz | Eliminates need for system-level firmware calibration or external loopback; adapts in real time to varying cable loss without host intervention. |
| Dual-output amplitude mode (1000mVP-P / 500mVP-P) | Reduces EMI and power consumption by 50% in chip-to-chip applications where full DVI drive strength is unnecessary. |
| Integrated loss-of-clock detection with open-collector CLKLOS | Enables fail-safe link monitoring and hardware-triggered squelch without additional comparators or microcontroller polling. |
| Manual equalization tuning via analog EQCONTROL voltage | Allows precise optimization for non-standard cables (e.g., flat-panel or twin-ax) where automatic adaptation may overshoot or undershoot. |
| Power-down mode with 10mA standby current | Supports dynamic power management in multi-display systems where equalizer is inactive during source switching or standby. |
Applications
| Front-Projector DVI/HDMI Inputs | High-Definition Televisions |
|---|---|
Use Scenario: Extending HDMI signal from AV receiver to ceiling-mounted projector over 30m passive cable run. IC Role / Device Role / Timing Role: TMDS signal conditioner placed at projector's HDMI receiver input to restore eye opening and suppress jitter induced by 28 AWG STP cable loss. Use Value: Enables 1080p60 transmission without pixel dropouts or color banding, verified with residual jitter <110ps p-p after 100ft cable. |
Use Scenario: Integrating DVI-D input on HDTV main board with legacy PC source using 24 AWG cable longer than 15m. IC Role / Device Role / Timing Role: Cable equalizer between DVI connector and internal TMDS deserializer, restoring signal integrity before clock/data recovery. Use Value: Supports VGA–UXGA computer resolutions up to 1600×1200@60Hz without requiring active repeater or FPGA-based redrive. |
| DVI-D/HDMI Cable-Extender Modules | LCD Computer Monitors |
Use Scenario: Active HDMI extender box converting HDMI to Cat5e/6 with TMDS retransmission over 50m. IC Role / Device Role / Timing Role: Final-stage equalizer at display-end module, correcting cumulative loss from both cable and transceiver stages. Use Value: Maintains compliance with HDMI 1.3a electrical specs (eye height >40% UI, jitter <0.3UI) after full signal chain. |
Use Scenario: High-brightness industrial LCD monitor receiving DVI signal from embedded controller via 20m flat-panel cable. IC Role / Device Role / Timing Role: Signal recovery IC mounted directly behind panel connector to minimize stub length and preserve high-frequency response. Use Value: Achieves stable 1280×1024@75Hz operation with deterministic jitter <95ps p-p, eliminating intermittent sync loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TMDS equalization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI SN65DP159 | Retimer architecture with integrated CDR; supports HDMI 2.0 (6Gbps); requires external reference clock; higher power (1.2W). | Required for >1.65Gbps HDMI 2.0/4K30; not drop-in for legacy DVI-D or ADC interfaces lacking CDR lock requirements. | Select SN65DP159 only when upgrading to HDMI 2.0 or needing jitter cleanup beyond equalization; MAX3815CCM+D remains optimal for cost-sensitive DVI/HDMI 1.3a systems. |
| Pericom PI3HDX1204A | Passive redriver (no adaptive EQ); fixed 6dB boost; no CLKLOS or power-down; 3.3V-only; lower jitter floor (≤85ps p-p). | Suitable only for short-to-mid cable runs (<15m 28 AWG); cannot compensate >24dB loss; lacks diagnostics or low-power modes. | Choose PI3HDX1204A for compact, low-power designs with known short cables; MAX3815CCM+D is necessary when cable reach exceeds 20m or loss exceeds 30dB. |
Compared with SN65DP159 and PI3HDX1204A, the MAX3815CCM+D uniquely balances adaptive equalization, diagnostic outputs (CLKLOS), and ultra-low-power modes - making it the only solution that delivers 36m reach at 1.65Gbps while supporting legacy DVI/DFP/ADC protocols without clock-data recovery overhead.
Availability
MAX3815CCM+D is available at Aetrix Electronics and suitable for front-projector inputs, HDMI extender modules, and LCD monitor receiver designs requiring stable component supply across extended production lifecycles.
Supply support for MAX3815CCM+D 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for industrial, communications, and consumer applications.
The MAX3815CCM+D belongs to Maxim's high-speed interface product line, engineered specifically for TMDS signal integrity restoration in digital video interconnects - targeting DVI, HDMI, PanelLink, and ADC ecosystems where cable-induced attenuation limits display resolution and distance.
FAQ
What is the maximum supported cable length for MAX3815CCM+D at 1080p60 (1.65Gbps)?
The MAX3815CCM+D supports up to 36 meters over 28 AWG shielded twisted pair (STP) cable at 1.65Gbps, as verified in typical operating characteristics with 40dB skin-effect loss at 825MHz. Performance depends on cable quality: 24 AWG STP extends reach to 50 meters, while 30 AWG is limited to 30 meters. Residual jitter remains ≤120ps p-p under these conditions.
Does MAX3815CCM+D require an external reference clock or configuration EEPROM?
No, the MAX3815CCM+D operates autonomously without external clocks or firmware. Its adaptive equalization is fully self-contained and requires no I²C/SPI programming. The only required controls are LVTTL-level PWRDWN, OUTLEVEL, and OUTON; EQCONTROL is optional for manual tuning. This makes MAX3815CCM+D ideal for space-constrained, low-BOM-cost video receiver designs.
How does the CLKLOS output function, and what threshold triggers it on MAX3815CCM+D?
The CLKLOS output on MAX3815CCM+D is an open-collector LVTTL signal that asserts low when the differential peak-to-peak amplitude of the incoming TMDS clock (RXC_IN±) falls below 50mVP-P at 165MHz. It remains high for amplitudes ≥100mVP-P. This provides direct hardware-level link failure detection - e.g., broken cable or source shutdown - without software polling or external comparators.
Can MAX3815CCM+D be used in dual-link DVI applications requiring six data lanes?
Yes, MAX3815CCM+D supports dual-link DVI by using two devices: one for lanes D0–D2 + clock, and another for lanes D3–D5 + the same clock signal routed to both ICs. Figure 2 in the datasheet confirms this configuration. Each MAX3815CCM+D handles three data channels independently, preserving timing alignment across links without added skew.
What is the thermal requirement for the exposed pad (EP) on MAX3815CCM+D?
The exposed pad (EP) on MAX3815CCM+D must be soldered to a solid PCB ground plane to ensure both electrical reference stability and thermal dissipation. With 0.6W typical power dissipation, proper EP connection reduces junction-to-board thermal resistance to ~35°C/W, preventing thermal shutdown. Failure to connect EP results in unreliable operation above 50°C ambient and violates Absolute Maximum Ratings.
MAX3815CCM+D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-TQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Equalizer
- Applications:
- Consumer Video
- Standards:
- -
- Control Interface:
- Serial
- Voltage - Supply:
- 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-TQFP-EP (7x7)
MAX3815CCM+D FAQ
1.How can I place an order for MAX3815CCM+D through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3815CCM+D 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 MAX3815CCM+D reliable?
The price and inventory of MAX3815CCM+D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3815CCM+D is usually 5 days.
3.What payment methods are accepted for MAX3815CCM+D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3815CCM+D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3815CCM+D?
MAX3815CCM+D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3815CCM+D 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 MAX3815CCM+D?
For technical support, including MAX3815CCM+D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3815CCM+D requirements.
6.How does Aetrix verify that MAX3815CCM+D is sourced from the original manufacturer or authorized distributors?
All MAX3815CCM+D 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 MAX3815CCM+D meets industry standards.
7.What is the process for return or replacement of MAX3815CCM+D?
All MAX3815CCM+D units undergo pre-shipment inspection (PSI). If there is an issue with MAX3815CCM+D, 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 MAX3815CCM+D part is unused and in its original packaging.
Return procedure for MAX3815CCM+D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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