MN35502

For Audio Equipment MN35502 D/A Converter for Digital Audio Equipment Overview The MN35502 is a CMOS digital-to-analog converter designed especially for PCM digital audio equipment. It features a built-in digital filter with 16/20-bit input. It uses pulse edge modulation (PEM) and JVC advanced noise shaping (VANS) to yield the high resolution and low distortion ratio equivalent to those of 20-bit systems covering the range between 0 and 20 kHz. The chip incorporates an 8-fold oversampling digital filter that eliminates a low-pass filter after the D/A converter and thus greatly reduces the power consumption of the overall D/A conversion system. Use of single-channel 4PEM output yields a D/A converter with a low distortion ratio and high signal-tonoise ratio. The chip makes a major contribution to reducing the cost and size of CD players and other digital audio equipment. Pin Assignment DIN LRCK BCK M4 DVDD2 CKO DVSS2 M1 OUT1C OUT1B AVDD1 OUT1D OUT1A AVSS1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 RSBDN RSBUP M3 DVDD1 XIN XOUT DVSS1 M2 OUT2C OUT2B AVDD2 OUT2D OUT2A AVSS2 Features Built-in 20-bit, 8-fold oversampling digital filter 2-fold oversampling digital filters with 3-stage cascade configuration Bandwidth ripple: within ±0.0042 dB for 0 to 0.454 fs Cutoff band attenuation 1±0.454 fs: min. 94.8dB 2±0.454 fs: min. 77.4dB 4±0.454 fs: min. 66.8dB Transition bandwidth 0.469 fs: – 0.12dB 0.531 fs: –38dB Digital filter output: 24 bits (...