EM7604

EM MICROELECTRONIC - MARIN SA EM7604 Low Power Crystal Oscillator Circuit 32.768 kHz Description EM7604 is an advanced low power CMOS circuit intended to be used together with a 32.768 kHz tuning fork crystal as a low frequency clock oscillator. Except the crystal, no other external components are required. The device combines excellent oscillator stability with very low power consumption. It is guaranteed over a very wide supply voltage and temperature range. In order to achieve a high frequency accuracy, the matched crystals should have a ± 20ppm tolerance or tighter. The output frequency is synchronized with signal on input Clock Enable CLKEN. The frequency output CLKOUT is enabled by connecting Clock Enable pin CLKEN to VDD. Connecting CLKEN to Vss, disables the frequency and the output CLKOUT is at Low State. Offered in a small SOT23-6 package, the EM7604 is a completely lead free product. Features  Very low power consumption: typ. 300nA  Wide supply voltage range: 1.2V to 5.5V  Operating temperature range: -10°C to +85°C.  On chip integrated oscillation capacitors: CL = 8pF  Very tight frequency tolerance  Excellent oscillator stability: 0.2 ppm/V  Synchronised output after Enable/Disable  Compatibility with crystals having high series resistance  Small SOT23-6 package  100% lead free, RoHS - compliant Typical Applications  General purpose clock generator for digital systems  Clock drivers for Real Time Clocks  Timekeeping in network servers and comput...