PEMIXQFN_PEMI2STD_FAM

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 2 — 3 November 2011

9 of 29

NXP Semiconductors

PEMIxQFN; PEMI2STD family

1-, 2-, 4-, 6- and 8-channel passive filter network with ESD protection

6.

Application information

6.1 Use cases

The selection of one of the filter devices has to be performed in dependence of the

maximum clock frequency, the driver strength, the capacitive load of the sink and the

maximum applicable rise and fall times.

6.2 LCD interfaces, medium-speed interfaces

For digital interfaces such as Liquid Crystal Display (LCD) interfaces running at clock

speeds between 10 MHz and 25 MHz or more, the devices can be used in dependence of

the sink load, the clock speed, the driver strength and the rise and fall time requirements.

The minimum EMI filter requirements may be an important factor, too.

6.3 Keypad, low-speed interfaces

Especially for lower-speed interfaces such as keypads, low-speed serial interfaces and

low-speed control signals, the devices offer a very robust ESD protection and strong

suppression of unwanted frequencies (EMI filtering). Due to their small size the devices

can easily be spread on a Printed-Circuit Board (PCB) in order to move the ESD and EMI

protection close to the part of the design which shall be protected.



il

insertion loss

PEMIxxxx/CT

800 MHz <f<3GHz

16

-

-

dB

f=2.5GHz

-

36

-

dB

PEMIxxxx/HT

800 MHz <f<3GHz

20

-

-

dB

f=1.9GHz

-

38

-

dB

PEMIxxxx/LT

800 MHz <f<3GHz

23

-

-

dB

f=1.6GHz

-

39

-

dB

PEMIxxxx/RT

800 MHz <f<3GHz

27

-

-

dB

f=1.4GHz

-

40

-

dB

PEMIxxxx/WT

800 MHz <f<3GHz

32

-

-

dB

f=1.0GHz

-

41

-

dB

Table 7.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit