IP4787CZ32 DVI and HDMI interface ESD protection, DDC/CEC buffering, hot plug handling and backdrive protection

The IP4787CZ32 is designed to protect High-Definition Multimedia Interface (HDMI) receiver interfaces. It includes HDMI 5 V power management, Data Display Channel (DDC) buffering and decoupling, hot plug drive, backdrive protection, Consumer Electronic Control (CEC) buffering and decoupling, and ±8 kV contact ElectroStatic Discharge (ESD) protection for all I/Os in accordance with the IEC 61000-4-2, level 4 standard.

The IP4787CZ32 incorporates Transmission Line Clamping (TLC) technology on the high-speed Transition-Minimized Differential Signaling (TMDS) lines to simplify routing and help reduce impedance discontinuities. All TMDS lines are protected by an impedance-matched diode configuration that minimizes impedance discontinuities caused by typical shunt diodes.

The 5 V power management enables host access to the (Extended Display Identification Data (EDID)) memory even if no HDMI plug is connected. The overall load to the 5 V line is according to the HDMI requirements.

The DDC lines use a buffering concept which decouples the internal capacitive load from the external capacitive load for use with standard Complementary Metal Oxide Semiconductor (CMOS) or Low Voltage Transistor-Transistor Logic (LVTTL) I/O cells down to 1.2 V. This buffering also redrives the DDC and CEC signals, allowing the use of longer or cheaper HDMI cables with a higher capacitance. The internal hot plug drive module simplifies the application of the HDMI receiver to control the hot plug signal.

All lines provide appropriate integrated pull-ups and pull-downs for HDMI compliance and backdrive protection to guarantee that HDMI interface signals are not pulled down if the system is powered down or enters Standby mode. Only a single external capacitor is required for operation

产品特点 Features

HDMI 1.3a and 1.4, 340 MHz pixel clock, deep color and HDMI Ethernet and Audio return Channel (HEAC) compatible
Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogen and antimony (Dark Green compliant)
Robust ESD protection without degradation after repeated ESD strikes
Impedance matched 100 Ω differential transmission line ESD protection for TMDS lines (±10 Ω). No Printed-Circuit Board (PCB) pre-compensation required
All external I/O lines with ESD protection of at least ±8 kV in accordance with the IEC 61000-4-2, level 4 standard
DDC capacitive decoupling between system side and HDMI connector side and buffering to drive cable with high capacitive load (> 700 pF/25 m)
Hot plug drive module
Utility biasing module (HEAC compliant)
CEC buffering and isolation, with integrated backdrive-protected 26 kΩ pull-up
Simplified flow-through routing utilizing less overall PCB space
Highest integration in a small footprint, PCB level, optimized RF routing, 32-pin HVQFN leadless package

应用

Digital High-Definition (HD) TV
Set-top box
PC monitor
Projector
Multimedia audio amplifier
HDMI picture performance quality enhancer module
Digital Visual Interface (DVI)

产品实物图

封装

型号	订购码 (12NC)	可订购的器件编号	产品状态	封装
IP4787CZ32	9340 661 12518	IP4787CZ32Y	量产	HVQFN32 (SOT617-3)

订货和供应

型号	订购码 (12NC)	可订购的器件编号	化学成分
IP4787CZ32	9340 661 12518	IP4787CZ32Y	IP4787CZ32

IP4787CZ32 技术支持

档案名称	标题	类型	格式
IP4787CZ32	DVI and HDMI interface ESD protection, DDC/CEC buffering, hot plug handling and backdrive protection	Data sheet	pdf
R_10001	Guideline for the laser marking layout of WLCSP devices	Handling precautions	pdf