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SM5877AM Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM5877AM Datasheet(HTML) 1 Page - Nippon Precision Circuits Inc |
1 / 16 page SM5877AM NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. 3rd-order Σ∆, 2-channel D/A Converter OVERVIEW The SM5877AM is a 3rd-order Σ∆, 2-channel D/A converter LSI for digital audio reproduction equip- ment. It also incorporates an 8-times oversampling digital filter and analog, post-converter lowpass fil- ters. The SM5877AM has digital deemphasis filter, atten- uator, and soft mute circuits built-in. Double-speed operation and low-voltage operation are also sup- ported. The SM5877AM operates from a 2.7 to 5.5 V supply, and is available in 24-pin SSOPs. FEATURES s 2.7 to 5.5 V operating supply voltage range s 4.5 to 5.5 V operating supply voltage range for double-speed mode s 44.1 kHz sampling frequency s Normal (384fs) and double-speed (192fs), 16.9344 MHz system clock s 16.9344 MHz crystal oscillator circuits built-in s 16-bit, MSB first, rear-packed serial data input format ( ≤ 64fs bit clock) s 8-times oversampling digital filter • 32 dB stopband attenuation • ±0.05 dB passband ripple s Deemphasis filter operation • 36 dB stopband attenuation • −0.09 to +0.23 dB deviation from ideal deem- phasis filter characteristics s Attenuator • 6-bit attenuator (64 steps) • Soft mute function when MODE is HIGH (approx. 1024/fs total muting time) s Built-in infinity-zero detector s Σ∆ 2-channel D/A converter • 3rd-order noise shaper • 32fs oversampling (16fs for double-speed mode) s 3rd-order analog, post-converter lowpass filters built-in (165 kHz cut-off frequency) s 24-pin SSOP s Molybdenum-gate CMOS process PINOUT PACKAGE DIMENSIONS Unit: mm 24-pin SSOP Package Marking 1 MUTE 2 DEEM 3 CKO 4 DVSS 5 BCKI 6 DI 7 DVDD 8 LRCI 9 TSTN 10 TO1 11 AVDDL 12 LO 13 AVSS 14 RO 15 AVDDR 16 MUTEO 17 XVDD 18 XTI 19 XTO 20 XVSS 21 DS 22 RSTN 23 MODE 24 ATCK SM5877AM 0.7 0.8 0.36 0.10 10.20 0.30 10.05 0.20 0.15 + 0.1 − 0.05 010 0.50 0.20 M A 7 7 8 5 M S |
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