California Micro Devices introduces the PicoGuard CM1227, a low capacitance electrostatic discharge (ESD) protection device consisting of four channels of ESD protection for the latest consumer, computer and related peripheral devices using high speed interfaces such as USB3.0, MIPI®, eSATA, DisplayPort and FireWire. These interfaces use low voltage signals with very fast rise and fall times and are susceptible to signal integrity degregation issues when capacitive devices such as ESD protection diodes are attached to the interface's signal lines. The CM1227, with its industry leading low input channel capacitance of 0.35pF (typ.), allows design engineers to utilize ESD protection on these signals with minimal channel capacitance effects from the protection device. The result is superior signal integrity on these protected interfaces when compared with designs utilizing higher capacitance ESD protection solutions.
The CM1227 is based on CMD's PicoGuard line of ESD protection products, providing industry leading low levels of capacitance, dynamic resistance, clamping voltage and insertion loss. Utilizing a space efficient microUDFN package, the CM1227 combines industry leading performance with significant space and cost savings to deliver enhanced customer value for today's most advanced digital consumer and PC designs.
CM1227 Key Features
- Ultra low channel input capacitance (0.35pF) (see View Eye Plot Comparison)
- ESD protection for Transition Minimized Differential Signaling Channels
- Four channels of industry leading 15 kV contact discharge ESD protection per IEC61000-4-2 Level 4
- Channel input capacitance matching of 0.02pF (typ), ideal for differential signals
- Minimal capacitance change within operating voltage range
- Each I/O pin can withstand over 1000 ESD strikes
- Available in RoHS compliant (lead free) packaging
CM1227 Applications
- Digital TVs, set top boxes, PCs and PC peripherals
- DisplayPort interfaces
- MIPI® ports
- eSATA ports in desktop PCs and hard disk drives
- USB3.0 ports in PCs and peripherals
- IEEE1394 FireWire ports; general purpose high speed data line ESD protection
Pricing and Availability
The CM1227 is available in a 10 pin microUDFN package (2.5mm X 1.0mm). Samples are available now and are priced at $0.30 each in quantities of 1000 units. Production is scheduled for the first quarter of 2010. Samples are available in October 2009 with mass production scheduled for Q1 2010.