DS1089LU-450+

MAXIM INTEGRATED PRODUCTS  DS1089LU-450+  芯片, 定时器

The is a 3.3V centre spread spectrum EconOscillator in 8 pin µMAX package. This is a clock generator that produces a spread spectrum dithered square wave. The DS1089LU-450+ is set to factory programmed 50MHz frequency. The DS1089L is pin-for-pin compatible with the DS1087L, however, the DS1089L dithers at equal percentages above and below the centre frequency. The user still has access to the internal frequency divider ±2% dithered output, dithering rate and programmable output power-down/disable mode through an I2C compatible programming interface. All the device settings are stored in non-volatile NV EEPROM allowing it to operate in stand-alone applications. The DS1089L also has power-down and output-enable control pins for power-sensitive applications.

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Supply voltage range is 2.7V to 3.6V

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Operating temperature range from -40°C to 85°C

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Centre frequency remains constant independent of dither percentage

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No external timing components required

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EMI reduction

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Dither frequency is fMOSC/4096

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User programmable down to 130KHz with divider

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Glitchless output-enable control

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Non-volatile settings