LPF0428X

LPF0428X ANALOG LOW PASS FILTER GENERAL DESCRIPTION lpf0428x is developed for analog conversion of PWM input and analog low pass filtering function for audio signal processing. The core consists of D-F/F and active R-C analog filter. And it has analog 2.3 volts supply operation. FEATURES — Analog 2.3Volt Operation www.DataSheet4U.com — 2'nd Order Low Pass Filter — On chip common level generator APPLICATIONS — Audio Signal Player FUNCTIONAL BLOCK DIAGRAM IM D C K Q AOUT IP D CK Q CK VCOM PDL VDDAL VSSAL VDDA VSSA VBBA Ver 1.3 (Nov 2001) This datasheet is a preliminary version. No responsibility is assumed by SEC for its use nor for any infringements of patents or other rights of third parties that may result from its use. The content of this datasheet is subject to change without any notice. 1 ANALOG LOW PASS FILTER LPF0428X CORE PIN DESCRIPTION Pin Name AOUT VCOM IP IM www.DataSheet4U.com I/O Type AO AO DI DI DI DI AP AG AP AG AG I/O Pad pmoa_abb pmoa_abb pmicc_abb pmicc_abb pmicc_abb pmicc_abb vdd2t_abb vss2t_abb vdd2t_abb vss2t_abb vbb_abb Analog Output Pin Description Analog Common Level Output PWM Positive Input PWM Negative Input Master Clock Input Power Down (Active Low) Analog Power Analog Ground Analog Logic Power Analog Logic Ground Bulk CK PDL VDDA VSSA VDDAL VSSAL VBBA I/O Type Abbr. — AI: Analog Input — DI: Digital Input — AO: Analog Output — DO: Digital Output — AB: Analog Bi-direction — DB: Digital Bi-direction — AP: Analog Power — AG: A...