IP4788CZ32 DVI and HDMI interface ESD and overcurrent protection, DDC/CEC buffering, hot plug detect and backdrive protection

The IP4788CZ32 is designed to protect High-Definition Multimedia Interface (HDMI) transmitter host interfaces. It includes HDMI 5 V overcurrent / overvoltage protection, Display Data Channel (DDC) buffering and decoupling, hot plug detect, backdrive protection, Consumer Electronic Control (CEC) buffering and decoupling, and ±12 kV contact ElectroStatic Discharge (ESD) protection for all I/Os, far exceeding the IEC 61000-4-2, level 4 standard.

The IP4788CZ32 incorporates Transmission Line Clamping (TLC) technology on the high-speed Transition Minimized Differential Signaling (TMDS) lines to simplify routing and help reducing impedance discontinuities. All TMDS lines are protected by an impedance-matched diode configuration that minimizes impedance discontinuities caused by typical shunt diodes.

The enhanced 60 mA overcurrent / overvoltage linear regulator guarantees HDMI-compliant 5 V output voltage levels with up to 6.5 V inputs.

The DDC lines use a new 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 1.8 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 detect module simplifies the application of the HDMI transmitter 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 when the system is powered down or enters Standby mode. Only a single external capacitor is required for operation

产品特点 Features

HDMI High-Speed, 340 MHz, deep color and HDMI Ethernet and Audio return Channel (HEAC) compatible
Impedance matched 100 Ω differential transmission line ESD protection for TMDS lines (±10 Ω). No Printed-Circuit Board (PCB) pre-compensation required
Simplified flow-through routing utilizing less overall PCB space
DDC capacitive decoupling between system side and HDMI connector side and buffering to drive cable with high capacitive load (> 700 pF/25 m)
All external I/O lines with ESD protection of at least ±12 kV, far exceeding the IEC 61000-4-2, level 4 standard
Low rdyn ESD protection on all TMDS lines for improved clamping performance
Hot plug detect module
CEC buffering and isolation, with integrated backdrive-protected 26 kΩ pull-up
Robust ESD protection without degradation after repeated ESD strikes
Highest integration in a small footprint, PCB level, optimized RF routing, DFN5050-32 package

应用

High-Definition (HD) and Standard-Definition (SD) Blu-ray and DVD players
Set-top box
PC graphic card
Game console
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
IP4788CZ32	9340 668 35118	IP4788CZ32J	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
IP4788CZ32	9340 668 35118	IP4788CZ32J	IP4788CZ32

IP4788CZ32 技术支持

档案名称	标题	类型	格式
IP4788CZ32	DVI and HDMI interface ESD and overcurrent protection, DDC/CEC buffering, hot plug detect and backdrive protection	Data sheet	pdf
R_10001	Guideline for the laser marking layout of WLCSP devices	Handling precautions	pdf