1.1 General description

The IP4256CZ3-M is a single-channel low-pass filter while the IP4256CZ5-W and

IP4256CZ6-F are dual-channel RC low-pass filters. All devices provide high-level

ElectroStatic Discharge (ESD) protection.

The devices are designed to protect a range of portable communication transmitter

applications against unwanted RF signals. The devices incorporate diodes to provide

protection to downstream components from ESD voltages up to ±25 kV contact discharge

far exceeding IEC 61000-4-2, level 4.

The devices are manufactured using monolithic silicon technology in lead-free plastic

packages.

1.2 Features and benefits

Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogen

and antimony (Dark Green compliant)

100 Ω series channel resistance and 30 pF channel capacitance at 0 V bias

voltage (DC)

ESD protection up to ±25 kV contact discharge far exceeding IEC 61000-4-2, level 4

Single and dual-channel integrated π-type RC filter network

IP4256CZ3-M: single-channel device in a 3-pin Quad Flat-pack No-leads (QFN)

compatible MicroPak plastic package

IP4256CZ5-W: dual-channel device in a 5-pin plastic package with 0.5 mm pitch

IP4256CZ6-F: dual-channel device in a 6-pin QFN compatible MicroPak plastic

package with 0.5 mm pitch

1.3 Applications

General-purpose ElectroMagnetic Interference (EMI), Radio Frequency

Interference (RFI) filtering and downstream ESD protection for:

Cellular phone and Personal Communication System (PCS) mobile handset

Cordless telephone

Wireless data (WAN/LAN) system

IP4256CZ6-F属于滤波器 > EMI/RFI 滤波器（LC，RC 网络）。安世半导体(中国)有限公司制造生产的IP4256CZ6-FEMI/RFI 滤波器（LC，RC 网络）该系列产品将几种无源元器件集成到单个装置中，可用于产生电流的频率依赖性阻抗。尽管有其他类型，但大多数都是用于抑制不必要高频信号传输的低通型，否则可能会导致干扰或意外操作。