CM1230

• 2, 4 and 8 channels of ESD protection
• Provides ESD protection to IEC61000-4-2 Level 4
  • ±8kV contact discharge
  • ±15kV air discharge
• Low loading capacitance of 0.8pF typical
• Minimal capacitance change with temperature and voltage
• Channel I/O to GND capacitance difference of 0.02pF typical is ideal for differential signals
• Channel I/O to I/O capacitance 0.15pF typical
• Zener diode protects supply rail and eliminates the need for external by-pass capacitors
• Each I/O pin can withstand over 1000 ESD strikes
• Available in 4, 6 and 10 bump Chip Scale Packages (CSP)
• OptiGuard™ coated for improved reliability at assembly
• Lead-free version available

The CM1230 is a family of 2, 4 and 8 channel, very low capacitance ESD protection diode arrays in CSP form factor. This device is ideal for protecting systems with high data and clock rates or for circuits that require low capacitive loading. Each channel consists of a pair of ESD diodes that act as clamp diodes that steer positive or negative ESD current pulses to either the positive or negative supply rail. A zener diode is integrated into the array between the positive and negative supply rails. The VCC rail is thus protected from ESD strikes and eliminates the need for a bypass capacitor to absorb positive ESD strikes to ground. Each channel of the CM1230 can safely dissipate ESD strikes of ±8kV, meeting the Level 4 requirement of the IEC61000-4-2 international standard for contact discharges as well as ±15kV air discharges per the IEC61000-4-2 specification. Using the MIL-STD-883 (Method 3015) specification for Human Body Model (HBM) ESD, the pins are protected for contact discharges at greater than ±15kV.

CM1230 is particularly well-suited for next generation wireless handsets that implement high-speed serial interface solutions for the LCD display and camera interfaces. In these wireless handset designs, a tolerance above 1.5pF cannot be tolerated due to the high data rates that are transferred between the baseband chipset and the LCD driver/controller ICs because a higher capacitive loading will cause the rise and fall times to slow which in turn hampers the functionality of circuit and operation of the wireless handset.

The CM1230 incorporates OptiGuard™ which results in improved reliability at assembly. The CM1230 is available in a space-saving, low profile Chip Scale Package with optional lead-free finishing

Note: Some of the devices listed here have suggested replacements available. Please see additional information at the end of this page.