LC78833V Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer	LC78833V
Beschreibung	Digital Audio 16-Bit D/A Converter with Built-In Digital Filters
Hersteller	Sanyo Semicon Device
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Gesamt 11 Seiten Ordering number : EN*5212 Preliminary CMOS LSI LC78833M, 78833V Digital Audio 16-Bit D/A Converter with Built-In Digital Filters Overview The LC78833M and LC78833V are CMOS 16-bit D/A converters with built-in 4× oversampling digital filters. Functions and Features [Digital Filter Block] • 4× oversampling filters: Two FIR filter stages (33rd and ninth order) • De-emphasis filter: Supports a 44.1 kHz sampling frequency (fs). [D/A Converter Block] • Dynamic level shifting conversion 16-bit D/A converter • D/A converters for two channels (synchronized outputs) on a single chip • On-chip output operational amplifiers • System clock: 384fs • 5-V single-voltage power supply • Supports low-voltage operation (3.0 V) • Implemented in a Si gate CMOS process for low power. Package Dimensions unit: mm 3036B-MFP20 [LC78833M] unit: mm 3175A-SSOP24 [LC78833V] SANYO: MFP20 Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Maximum supply voltage Maximum input voltage Maximum output voltage Operating temperature Storage temperature Symbol VDD max VIN max VOUT max Topr Tstg Conditions SANYO: SSOP24 Ratings –0.3 to +7.0 –0.3 to VDD + 0.3 –0.3 to VDD + 0.3 –30 to +75 –40 to +125 Unit V V V °C °C SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN D3095HA (OT) No. 5212-1/11 LC78833M, 78833V LC78833M/V Operation 1. Digital Filters The LC78833M and LC78833V perform the computations shown in the figure. • Oversampling The oversampling circuit in these ICs consists of two 2× interpolation filters (implemented as FIR filters) connected vertically. In particular, these ICs implement 4× oversampling by the vertical connection of two FIR filter stages, a 33rd-order stage and a ninth-order stage. See page 9 for the filter characteristics. • De-emphasis A first-order IIR filter is used for de-emphasis. The filter coefficients are optimized for a sampling frequency of 44.1 kHz. See page 9 for the filter characteristics when de-emphasis is applied. — De-emphasis on/off switching De-emphasis is on when the EMP pin is high. De-emphasis is off when the EMP pin is low. 2. Digital Audio Data Input These ICs handle digital audio data in a 16-bit two’s complement MSB first format. The 16-bit serial data is input to an internal register from the DATA pin on BCLK rising edges and read in on rising and falling edges of the LRCK signal. No. 5212-6/11 6 Page
Seiten	Gesamt 11 Seiten
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Besondere Datenblatt

Teilenummer	Beschreibung	Hersteller
LC78833	Digital Audio 16-Bit D/A Converter with Built-In Digital Filters	Sanyo Semicon Device
LC78833M	Digital Audio 16-Bit D/A Converter with Built-In Digital Filters	Sanyo Semicon Device
LC78833V	Digital Audio 16-Bit D/A Converter with Built-In Digital Filters	Sanyo Semicon Device

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