EMI filter and ESD protection
Mobile phone applications
Baseband
interface
Number of
lines
Line small-signal equivalents Digital
interface
clock speed Remark Type Package
Rline Cline
Reverse
battery 1 - 240 pF - Overvoltage and reverse battery protection IP4085CX5/LF 5 ball CSP
Audio
2 0.9 Ω290 pF - low ohmic speaker (< ~8 Ω) IP4047CX6/LF 6 ball CSP
2 10 Ω200 pF - high ohmic speaker (> ~8 Ω) IP4048CX5/LF 5 ball CSP
2 68 Ω110 pF - differential microphone IP4049CX5/LF 5 ball CSP
2 470 Ω35 pF - differential microphone IP4055CX5/LF 5 ball CSP
USB
2 33 Ω / 1.5 kΩ35 pF ~5.5 MHz
Fully integrated USB2.0 low / full-speed interface with
EMI filter, ESD protection,
pull-up resistors and impedance matching
on Philips ISP110x, ISP130x, ISP136x
IP4058CX8/LF 8 ball CSP
2 33 Ω35 pF ~5.5 MHz
Fully integrated USB2.0 low / full-speed interface with
EMI filter, ESD protection and
impedance matching on Philips ISP1110
IP4078CX6/LF 6 ball CSP
3 - 3 pF ~240 MHz USB2.0 high-speed ESD protection
on Philips ISP176x and ISP1504 IP4059CX5/LF 5 ball CSP
Sim card 3 47 Ω / 100 Ω35 pF ~12 MHz EMI filter, ESD protection IP4044CX8/LF 8 ball CSP
3 47 Ω / 100 Ω< 20 pF ~20 MHz EMI filter, ESD protection IP4064CX8/LF 8 ball CSP
Bottom
connector
6 100 Ω60 pF ~20 MHz EMI filter, ESD protection IP4053CX15/LF 15 ball CSP
6 100 Ω30 pF ~ 40 MHz EMI filter and ESD protection
+ 4 single protection diodes IP4153CX15/LF 15 ball CSP
Memory cards
4 47 Ω / 13 kΩ / 56 kΩ 25 pF - MMC ESD protection, pull-up resistors IP4051CX11/LF 11 ball CSP
4 50 Ω / 75 kΩ / 7 kΩ18 pF ~25 MHz High-speed MMC ESD
protection, pull-up resistors IP4060CX16/LF 16 ball CSP
7 40 Ω / 50 kΩ / 25 kΩ 18 pF ~20 MHz SD-Card ESD protection,
EMI filter, pull-up resistors IP4052CX20/LF 20 ball CSP
7 - 5 pF ~24 MHz Memory stick PRO ESD protection IP4067CX9/LF 9 ball CSP
LCD display
8 100 Ω50 pF ~25 MHz EMI filter, ESD protection IP4088CX20/LF* 20 ball CSP
10 80 Ω40 pF ~30 MHz EMI filter, ESD protection IP4033CX25/LF 25 ball CSP
10 84 Ω14 pF ~40 MHz EMI filter, ESD protection IP4040CX25/LF 25 ball CSP
10 200 Ω50 pF ~20 MHz EMI filter, ESD protection IP4041CX25/LF 25 ball CSP
Keypad 10 1 Ω50 pF < 1 MHz EMI filter, ESD protection IP4035CX24/LF 24 ball CSP
* under development