|CM1423 Secure Digital (SD) Card EMI Filter Array with ESD Protection
Provides EMI filtering and ESD protection for an SD port on a mobile device Six channels of EMI filtering with ESD protection Four channels of ESD protection �15kV ESD protection on all I/O pins (IEC 610004-2, contact discharge) �30kV ESD protection (HBM) Better than 25dB of attenuation at 1GHz for 12pF100 -12pF filter configuration Integrates 34 components into small form factor CSP solution x 1.458mm footprint Chip Scale Package Chip Scale Package features extremely low lead inductance for optimum filter and ESD performance Available with OptiGuardTM coating for improved reliability at assembly Lead-free version available
California Micro Devices's is an EMI filter array with ESD protection, which integrates six Pi- filters (C-R-C) and four channels of ESD protection. The CM1423's filters have component values of 12pF100-12pF. The part includes ESD protection diodes on every pin, which provide a very high level of protection for sensitive electronic components that may be subjected to electrostatic discharge (ESD). All the ESD diodes safely dissipate ESD strikes of �15kV, beyond the maximum requirement of the IEC 61000-4-2 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 �30kV. This device is particularly well-suited for portable electronics (e.g. mobile handsets, PDAs, notebook computers) because of its small package and easy-to-use pin assignments. In particular, the CM1423 is ideal for EMI filtering and protecting data lines from ESD for the Secure Digital (SD) Card interface slot in mobile handsets. The is an all-inclusive solution for the SD card interface since its EMI filters provide the proper cut-off frequency to attenuate unwanted signals. The CM1423 is manufactured in a space-saving, lowprofile, chip-scale package, and is optionally available with OptiGuardTM coating for improved reliability. It is also available with lead-free finishing.Applications
Secure Digital (SD) Card data lines in mobile handsets SD Card interface protection for other mobile electronics such as MP3 players, PDAs and digital cameras I/O port protection for mobile handsets, notebook computers, PDAs etc. EMI filtering for data ports in cell phones, PDAs or notebook computers.
In a typical SD Card application, (A6) is connected C4 (C6). See example given in applications section.� 2005 California Micro Devices Corp. All rights reserved. 08/31/05
CM1423-03 Chip Scale Package (OptiGuardTM coated) Notes: 1) These drawings are not to scale. 2) Lead-free devices are specified by using a character for the top side orientation mark.
PIN(s) A8 B1-B4 NAME DAT2 DAT3 CMD VSS1 CLK ESD DAT0 DAT1 GND DESCRIPTION DATA2 Filter+ESD Channel, System Side DATA3 Filter+ESD Channel, System Side CMD Signal Filter+ESD Channel, System Side ESD-only Channel, Supply Voltage Ground Clock Filter + ESD Channel ESD-only Channel DATA0 Filter+ ESD Channel, System Side DATA1 Filter+ ESD Channel, System Side Device Ground PIN(s) C7 C8 NAME DAT2 DAT3 CMD VDD CLK DAT0 DAT1 DESCRIPTION DATA2 Filter+ ESD Channel, SD Card Side DATA3 Filter+ ESD Channel, SD Card Side CMD Signal Filter+ESD Channel, SD Card Side ESD-only Channel, Supply Voltage Clock Filter + ESD Channel ESD-only Channel, Supply Voltage Ground DATA0 Filter+ ESD Channel, SD Card Side DATA1 Filter+ ESD Channel, SD Card Side
Standard Finish No Coating Ordering Part Bumps 20 PKG CSP Number1 CM1423-01CS Part Marking N231 OptiGuardTM Coated Ordering Part Number1 CM1423-03CS Part Marking N233 Lead-free Finish2 No Coating Ordering Part Number1 CM1423-01CP Part Marking N231 OptiGuardTM Coated Ordering Part Number1 CM1423-03CP Part Marking N233
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified. Note 2: Lead-free devices are specified by using a character for the top side orientation mark.� 2005 California Micro Devices Corp. All rights reserved.
PARAMETER Storage Temperature Range DC Power per Resistor DC Package Power Rating RATING 100 500 UNITS �C mWPARAMETER Operating Temperature Range RATING to +85 UNITS �C
SYMBOL R C VDIODE ILEAK VSIG PARAMETER Resistance Capacitance Diode Standoff Voltage Diode Leakage Current (reverse bias) Signal Voltage Positive Clamp Negative Clamp In-system ESD Withstand Voltage a) Human Body Model, MIL-STD-883, Method 3015 b) Contact Discharge per IEC 61000-4-2 Level 4 Dynamic Resistance Positive Negative Cut-off Frequency = 12pF; Note At 2.5V DC, 30mV AC IDIODE = 10A VDIODE = 3.3V ILOAD = 10mA ILOAD = -10mA Notes 2 and 5.6 -1.5 CONDITIONS MIN 80 9 TYP MAX 120 15 UNITS nA V
Note 1: TA=25�C unless otherwise specified. Note 2: ESD applied to input and output pins with respect to GND, one at a time. Note 3: These parameters are guaranteed by design and characterization.