Key Specifications

The UM4601/UM4611/UM8601/UM8611 is a (L-C) low pass filter array with integrated TVS diodes. It is designed to suppress unwanted EMI signals and provide electrostatic discharge (ESD) protection in portable electronic equipment. This device utilizes solid-state silicon-avalanche technology for superior clamp­ing performance and DC electrical characteristics. They have been optimized for protection of color LCD and camera lines in cellular phones and other portable electronics.

The device consists of identical circuits comprised of TVS diodes for ESD protection, and an induc­tor - capacitor network for EMI filtering. A typical inductor value of 17nH and a capacitor value of 15pF are used to achieve 24dB minimum attenuation from 800MHz to 2.7GHz. The TVS diodes provide effective suppression of ESD voltages in excess of ±15kV (air discharge) and ±8kV (contact discharge) per IEC 61000-4-2, level 4.

The UM4601 is in a RoHS compli­ant DFN8 2.0×2.0 package, the UM4611 is in a RoHS compli­ant DFN8 1.7×1.3 package, the UM8601 is in a RoHS compli­ant DFN16 4.0×1.6 package and the UM8611 is in a RoHS compli­ant DFN16 3.3×1.3 package. The leads are finished with lead-free. The small pack­age makes it ideal for use in portable electronics such as cell phones, digital still cameras, and PDAs.

 

 

- Bidirectional EMI Filter with Integrated TVS for ESD Protection

- ESD Protection to IEC 61000-4-2 (ESD) Level 4, ±15kV (Air), ±8kV (Contact)

- Filter Performance: 24dB Minimum Attenuation from 800MHz to 2.7GHz

- TVS Working Voltage: 5V

- Inductor: 17nH (Typical)

- Capacitors: 15pF (Typical at V_R=2.5V)

- Protection and Filtering for Multi Lines

  UM4601/4611: Four Lines

  UM8601/8611: Eight Lines

- Solid-State Technology

 

 

- Color LCD Protection

- Cell Phone CCD Camera Lines

- Clamshell Cell Phones

 

Pin Configurations

   
                           Device Schematic (4X)

(T_J =25°C, unless otherwise noted)

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
TVS Reverse Stand-Off Voltage	VRWM				5	V
TVS Reverse Breakdown Voltage	VBR	IT=1mA	6	8	10	V
TVS Reverse Leakage Current	IR	VRWM=3.3V			0.1	μA
DC Resistance	Rcc			10		Ω
Roll-Off Frequency at -6dB Attenuation	fR	Zsource=Zload=50Ω		350		MHZ
Filter Cut-Off Frequency	fc	Zsource=Zload=50Ω		150		MHZ
Inductance	L			17		nH
Capacitance	Cd	VR=2.5V, f=1MHZ		15		pF
Total Capacitance	Ctotal	Input to GND, Each Line VR=2.5V, f=1MHZ	24	30	36	pF

  

Part Number	Working Voltage	Packaging Type	Channel	Marking Code	Shipping Qty
UM4611	5.0V	DFN8 1.7×1.3	4	AN	3000pcs/7Inch Tape & Reel