ON Semiconductor CM1451 Users manual
CM1451
LCD and Camera EMI Filter Array with ESD Protection
Description
The CM1451 is an inductor−capacitor (L−C) based EMI filter array with integrated ESD protection in CSP. The CM1451−06 and CM1451−08 are configured in 6 and 8 channel formats respectively. Each channel is implemented as a 5−pole L−C filter with the component values 9.5 pF − 17 nH − 9.5 pF − 17 nF − 9.5 pF. The CM1451’s roll−off frequency at −10 dB attenuation is 500 MHz. It can be used in applications where the data rates are as high as 200 Mbps while providing greater than 35 dB attenuation over the 800 MHz to 2.7 GHz frequency range. The device has ESD protection diodes on every pin that provide a very high level of protection for sensitive electronic components that may be subjected to electrostatic discharge (ESD). The ESD protection diodes connected to the filter ports safely dissipate ESD strikes of ±15 kV, exceeding the Level 4 requirement of the IEC61000−4−2 international standard. Using the MIL−STD−883 (Method 3015) specification for Human Body Model (HBM) ESD, the pins are protected for contact discharges at greater than ±30 kV.
This device is particularly well−suited for portable electronics (e.g. wireless handsets, PDAs) because of its small package format and easy−to−use pin assignments. In particular, the CM1451 is ideal for EMI filtering and protecting data and control lines for the LCD display and camera interface in wireless handsets while maintaining the integrity of signals that have rise/fall times as fast as 2 ns.
The CM1451 incorporates OptiGuard, a coating that results in improved reliability at assembly. The CM1451 is available in a space−saving, low−profile Chip Scale Package with RoHS compliant lead−free finishing.
Features
•High Bandwidth, High RF Rejection Filter Array
•Six and Eight Channels of EMI Filtering
•Utilizes Inductor−Based Design Technology for True L−C Filter Implementation
•OptiGuard Coating for Improved Reliability
•Chip Scale Package (CSP) Features Extremely Low Lead Inductance for Optimum Filter and ESD Performance
•15 kV ESD Protection on Each Channel (IEC 61000−4−2 Level 4, Contact Discharge)
•30 kV ESD Protection on Each Channel (HBM)
•Better than 40 dB of Attenuation at 1 GHz
•Maintains Signal Integrity for Signals that Have a Risetime and Falltime as Fast as 2 ns
Applications
•LCD and Camera Data Lines in Mobile Handsets
•I/O Port Protection for Mobile Handsets, Notebook Computers, PDAs, etc.
•Wireless Handsets / Cell Phones
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WLCSP15 |
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WLCSP20 |
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CP SUFFIX |
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CP SUFFIX |
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CASE 567BT |
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CASE 567CL |
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MARKING DIAGRAM |
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N516 |
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N518 |
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CM1451−06 |
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CM1451−08 |
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15−Bump CSP Package |
20−Bump CSP Package |
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N516 |
= CM1451−06CP |
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N518 |
= CM1451−08CP |
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ORDERING INFORMATION |
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Device |
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Package |
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Shipping† |
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CM1451−06CP |
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CSP−15 |
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3500/Tape & Reel |
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(Pb−Free) |
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CM1451−08CP |
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CSP−20 |
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3500/Tape & Reel |
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(Pb−Free) |
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♥ Semiconductor Components Industries, LLC, 2013 |
1 |
April, 2013 − Rev. 3 |
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CM1451
BLOCK DIAGRAM
L1 L2
FILTERn* 
FILTERn*
C1 C2 C3
GND
(Pins B1−Bm)
1 of n EMI Filtering + ESD Channels
(n = 6 for CM1451−06, 8 for CM1451−08, m=n/2)
*See Package/Pinout Diagrams for expanded pin information.
PACKAGE / PINOUT DIAGRAMS
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Top View |
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Bottom View |
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Orientation |
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(Bumps Down View) |
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(Bumps Up View) |
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Marking |
+ 1 |
2 |
3 |
4 |
5 |
6 |
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(see Note) |
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A |
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C1 |
C2 |
C3 |
C4 |
C5 |
C6 |
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B |
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N516 |
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Orientation |
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B1 |
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B2 |
B3 |
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C |
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Marking |
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A1 |
A2 |
A3 |
A4 |
A5 |
A6 |
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A1 |
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CM1451−06CP |
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15−Bump CSP Package |
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Orientation |
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Marking |
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+ 1 |
2 |
3 |
4 |
5 |
6 |
7 8 |
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(see Note) |
A |
C1 |
C2 |
C3 |
C4 |
C5 |
C6 |
C7 |
C8 |
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B |
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N518 |
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Orientation |
B1 |
B2 |
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B3 |
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B4 |
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C |
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Marking |
A1 |
A2 |
A3 |
A4 |
A5 |
A6 |
A7 |
A8 |
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A1 |
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CM1451−08CP |
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20−Bump CSP Package |
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Note: Lead−free devices are specified by using a “+” character for the top side orientation mark.
Table 1. PIN DESCRIPTIONS
CM1451−06 |
CM1451−08 |
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CM1451−06 |
CM1451−08 |
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Pin(s) |
Pin(s) |
Name |
Description |
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Pin(s) |
Pin(s) |
Name |
Description |
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A1 |
A1 |
FILTER1 |
Filter Channel 1 |
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C1 |
C1 |
FILTER1 |
Filter Channel 1 |
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A2 |
A2 |
FILTER2 |
Filter Channel 2 |
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C2 |
C2 |
FILTER2 |
Filter Channel 2 |
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A3 |
A3 |
FILTER3 |
Filter Channel 3 |
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C3 |
C3 |
FILTER3 |
Filter Channel 3 |
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A4 |
A4 |
FILTER4 |
Filter Channel 4 |
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C4 |
C4 |
FILTER4 |
Filter Channel 4 |
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A5 |
A5 |
FILTER5 |
Filter Channel 5 |
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C5 |
C5 |
FILTER5 |
Filter Channel 5 |
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A6 |
A6 |
FILTER6 |
Filter Channel 6 |
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C6 |
C6 |
FILTER6 |
Filter Channel 6 |
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− |
A7 |
FILTER7 |
Filter Channel 7 |
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− |
C7 |
FILTER7 |
Filter Channel 7 |
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− |
A8 |
FILTER8 |
Filter Channel 8 |
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− |
C8 |
FILTER8 |
Filter Channel 8 |
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B1−B3 |
B1−B4 |
GND |
Device Ground |
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2
CM1451
SPECIFICATIONS
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter |
Rating |
Units |
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Storage Temperature Range |
−65 to +150 |
°C |
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Current per Inductor |
30 |
mA |
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DC Package Power Rating |
500 |
mW |
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Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Table 3. STANDARD OPERATING CONDITIONS
Parameter |
Rating |
Units |
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Operating Temperature Range |
−40 to +85 |
°C |
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Table 4. ELECTRICAL OPERATING CHARACTERISTICS (Note 1)
Symbol |
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
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LTOT |
Total Channel Inductance (L1 + L2) |
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34 |
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nH |
L1, L2 |
Inductance |
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17 |
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nH |
RDC IN−OUT |
DC Channel Resistance |
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18 |
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W |
CTOT |
Total Channel Capacitance (C1 + C2 + C3) |
At 2.5 V DC, 1 MHz, |
22.8 |
28.5 |
34.2 |
pF |
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30 mV AC |
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C1, C2, C3 |
Capacitance |
At 2.5 V DC, 1 MHz, |
7.6 |
9.5 |
11.4 |
pF |
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30 mV AC |
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fC |
Cut−off Frequency |
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260 |
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MHz |
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ZSOURCE = 50 W, ZLOAD = 50 W |
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fRO |
Roll−off Frequency at −10 dB Attenuation |
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500 |
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MHz |
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ZSOURCE = 50 W, ZLOAD = 50 W |
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VDIODE |
Diode Standoff Voltage |
IDIODE = 10 mA |
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6.0 |
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V |
ILEAK |
Diode Leakage Current |
VDIODE = +3.3 V |
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0.1 |
1.0 |
mA |
VSIG |
Signal Clamp Voltage |
ILOAD = 10 mA |
5.6 |
6.8 |
9.0 |
V |
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Positive Clamp |
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Negative Clamp |
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−1.5 |
−0.8 |
−0.4 |
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VESD |
In−system ESD Withstand Voltage |
(Note 2) |
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kV |
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a) Human Body Model, MIL−STD−883, Method 3015 |
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30 |
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b) Contact Discharge per IEC 61000−4−2 Level 4 |
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15 |
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RDYN |
Dynamic Resistance |
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W |
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Positive |
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2.30 |
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Negative |
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0.90 |
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1.TA = 25°C unless otherwise specified.
2.ESD applied to input and output pins with respect to GND, one at a time.
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3
CM1451
PERFORMANCE INFORMATION
Typical Filter Performance (TA = 255C, DC Bias = 0 V, 50 W Environment)
Figure 1. Insertion Loss vs. Frequency (A1−C1 to GND B1)
Figure 2. Insertion Loss vs. Frequency (A2−C2 to GND B1)
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4
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