CE2632

DESCRIPTION The CE2632 is a mixed signal CMOS monolithic stereo audio ADC for consumer applications. The ADC is 128-time oversampled. The sampled data are digital filtered and decimated before sent out. A switchabThe ADC utilizes 4-order Σ∆ architecture. The 1− bit Σ∆ converter offers superior differential linearity, with minimum distortion due to component mismatch, and high tolerance to clock jitter. The internal digital filter has a 20K bandwidth. The analog input is 1 vrms corresponding to digital full scale value. The value greater than full scale will be clipped. FEATURES Stereo Audio ADC. - 96dB SNR (A Weighted). - -82 dB THD + N Ratio (A Weighted). - 32K - 96 KHz. Sampling Rates. - 91 dB channel separation. I2S, Left Justified Digital I/F Formats. 3.3 Volt Power Supply. Applications Digital Surround Sound For Home Theatre AV Receiver Car Audio. FMT NOHPF CE2632 Control Interface LIN 77 A/D A/D DECIMATION FILTER PCM I/F XCK DOUT BCK LRCK CEI Microelectronics Co. Ltd. 1-12 September 5, 2005 Item 1 2 3 4 5 6 7 8 9 CE2632 Performance ADC PERFORMANCE SPECIFICATIONS Maximum Input Level 0 dB Audio Input Level Audio Bandwidth 20Hz - 20 KHz SNR (A-weight) THD + NOISE (A-weight, 0 dB input) Dynamic Range Channel Separation Nonlinear Distortion Channel Gain Error Spec. 4 Vpp 1 Vrms +/- 0.5 dB >96 dB < -82 dB 89 dB < -90 dB < 0.5 dB < 0.5 dB CE2632 2-12 September 5, 2005 PIN ASSIGNMENT CE2632 DVDD SDO BCK FMT CAP VCM RIN 1 2 3 4 5 6 7 CE2632 14 ...