California Micro Devices Broadens Award Winning PicoGuard XS(R) Family of ESD Protection Devices
Ideal for HDMI(TM) and DisplayPort(TM) Applications in Digital Consumer, PC and Mobile Applications
Another member of the PicoGuard XS family, the CM1233, was recently awarded Electronic Products magazine’s coveted “Product of the Year” award. The CM1235 offers the same impedance matching and 8kV protection as the CM1233, but in a footprint that is 70 percent smaller. The CM1236 is pin-compatible with the CM1233, but is an improved design offering even better impedance matching.
“As data rates continue to increase, the ability to add ESD protection without compromising signal integrity is extremely important,” stated
CMD’s PicoGuard XS Architecture
The CM1235 and CM1236 are based on the PicoGuard XS architecture that integrates inductors with the ESD diodes to improve impedance matching for high speed data lines. Traditionally, system designers must compensate for the capacitance of the ESD protection device by adding external inductance, eliminating capacitance under the signal traces near the ESD device, or both. These approaches add complexity and cost, and are PC board dependent, limiting the ability to use multiple board vendors. The CM1235 and CM1236 eliminate the need for these measures, providing matched impedance with no external compensation or components required, in a board-independent footprint.
CM1235 and CM1236 – Main Features
The CM1235 and CM1236 provide protection for four pairs of differential channels, offering 8kV contact discharge ESD protection in accordance with the IEC61000-4-2 standard. The integration of inductors with the ESD diodes enhances ESD protection as well as ensuring outstanding signal integrity. Compared with industry leading single stage ESD diode arrays, they offer:
- Greater than 40% reduction in peak clamping voltage
- 80% reduction in peak residual current
- Greater than 10% reduction in total energy reaching the protected device
- 100 Ohm differential impedance matching with no external compensation required
- Close matching between lines
- No Vp connection, eliminating backdrive and simplifying layout
- Compact 16 pin TDFN package for reduced board space
Updated www.XtremeESD.com Website
CMD’s dedicated ESD Resource Center provides relevant information about ESD protection to designers of personal computer and digital consumer electronics applications. The site contains technical white papers, product specifications, articles, presentations and an open forum on various ESD protection topics. Go to: www.XtremeESD.com.
Pricing and Availability
The CM1235 and CM1236 are available in 16 lead TDFN packages. They are currently in full production and are priced at
About California Micro Devices Corporation
California Micro Devices Corporation is a leading supplier of application specific analog and mixed signal semiconductor products for the mobile handset, digital consumer electronics and personal computer markets. Key products include protection devices for mobile handsets, digital consumer electronics products such as digital TVs, and personal computers as well as analog and mixed signal ICs for mobile handset displays. Detailed corporate and product information may be accessed at http://www.cmd.com.
XtremeESD and PicoGuard XS are registered trademarks of California Micro Devices Corporation. All other trademarks are property of their respective owners.
SOURCE California Micro Devices