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CM1624: EMI Filter with ESD Protection

Datasheet: EMI Filter for T-Flash / MicroSD Interfaces
Rev. 4 (684.0kB)
Product Overview
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The CM1624 is a combination EMI filter and line termination device with integrated TVS diodes for use on Multimedia Card interfaces. This state-of-the-art device utilizes solid-state, silicon-avalanche technology for superior clamping performance and DC electrical characteristics. The CM1624 has been optimized for protection of T-Flash/MicroSD interfaces in cellular phones and other portable electronics. The CM1624 consists of six circuits that includes series impedance matching resistors and pull-up resistors as required by the SD specification. TVS diodes are included on each line for ESD protection. An additional TVS diode connection is included for protection of the voltage (Vcc) bus. Termination resistor value of 40 Ohm is provided on the SDData0, SDData1, SDData2, SDData3, CMD, and CLK lines. Pull-up resistors of 25k Ohm are included on the SDData0, SDData1, SDData2, SDData3 and CMD lines, as well. These may be configured for devices operating in SD or SPI mode. The TVS diodes provide effective suppression of ESD voltages in excess of 15kV (contact discharge) per IEC 61000-4-2, level 4. The CM1624 is in a 16-pin, RoHS/WEEE compliant, UDFN 16-pin package. It measures 3.30 x 1.35 x 0.50mm. The leads are spaced at a pitch of 0.4mm and are finished with lead-free NiPd.
Features   Benefits
     
  • Application Specific
 
  • Mates perfectly with the most popular micro SD interfaces
  • ±15kV ESD protection (IEC 61000-4-2, contact discharge)
 
  • Provides robust, fast-acting transient voltage supprression to protect ESD sensitive devices, higher than regulatory and carrier requirements of ±8kV
  • Significant attenuation of noise in the 700 MHz bands, broadband attenuation throughout the cellular bands
 
  • Critical for compliance for emerging protocols such as LTE and 4G
Applications   End Products
  • uSD and removable memory interfaces
 
  • Cellular Phones, Smartphones, Netbooks, Notebooks, Portable Navigation Devices, e-Readers
Technical Documentation & Design Resources
Simulation Models (1) Package Drawings (1)
Data Sheets (1)  
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CM1624-08DE Active
Pb-free
Halide free
CM1624 UDFN-16 517BE 1 260 Tape and Reel 3000 $0.2099
Market Leadtime (weeks) : 8 to 12
FutureElectronics   (2020-08-19 00:00) : >1K
PandS   (2020-09-14 00:00) : <1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Interface
Number of Lines
Filter Type
R Typ (Ω)
C Typ (pF)
IR Max (µA)
V(BR) Typ (V)
VRWM Max (V)
Package Type
CM1624-08DE  
 $0.2099 
Pb
H
 Active   
SIM Card
8
L-C
40
12
0.5
6.8
3
UDFN-16
Case Outlines
517BE   
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