onsemi MCK12140DG

The MCH/K12140 is a phase frequency−detector intended for phase−locked loop applications which require a minimum amount of phase and frequency difference at lock. When used in conjunction with high performance VCO such as the MC100EL1648, a high bandwidth PLL can be realized. The device is functionally compatible with the MC12040 phase−frequency detector with the maximum frequency extending to 800 MHz. When the Reference (R) and VCO (V) inputs are unequal in frequency and/or phase, the differential UP (U) and DOWN (D) outputs will provide pulse streams which when subtracted and integrated provide an error voltage for control of a VCO. The device is packaged in a small outline, surface mount 8−lead SOIC package. There are two versions of the device to provide I/O compatibility to the two existing ECL standards. The MCH12140 is compatible with MECL 10H logic levels while the MCK12140 is compatible to 100K ECL logic levels. This device can also be used in +5.0 V systems.

• 800 MHz Typical Bandwidth
• Small Outline 8-Lead SOIC Package
• 75 kΩ Internal Input Pulldown Resistors

• 1000 V ESD Protection

• Pb−Free Packages are Available

The 12140 is a high speed digital circuit used as a phase comparator in an analog phase-locked loop.