DF1760U Datasheet | Burr-Brown

® PCM1760P/U DF1760P/U SBAS025 Multi-Bit Enhanced Noise Shaping 20-Bit ANALOG-TO-DIGITAL CONVERSION SYSTEM Features q DUAL 20-BIT MONOLITHIC MODULATOR (PCM1760) AND MONOLITHIC DECIMATING DIGITAL FILTER (DF1760) q HIGH PERFORMANCE: THD+N: - 92d B typ, - 90d B max Dynamic Range: 108d B typ SNR: 108d B min, 110d B typ Channel Separation: 98d B typ, 94d B min q 64X OVERSAMPLING q CO-PHASE CONVERSION q RUNS ON 256fs OR 384fs SYSTEM CLOCK q VERSATILE INTERFACE CAPABILITY: 16-, 20-Bit Output MSB First or LSB First Format q OPTIONAL FUNCTIONS: Offset Error Calibration Overflow Detection Power Down Mode (DF1760) q RUNS ON ±5V SUPPLIES (PCM1760) AND 5V SUPPLY (DF1760) q PACT 28-PIN PACKAGES: 28-Pin DIP and SOIC DESCRIPTION The PCM1760 and DF1760 bine for a low-cost, high-performance dual 20-bit, 48k Hz sampling analog-to-digital conversion system which is specifically designed for dynamic applications. The PCM1760/DF1760 pair form a 4-bit, 4th order, 64X oversampling analog-to-digital converter. The PCM1760 is a delta-sigma modulator that uses a 4-bit quantizer within the modulation loop to achieve very high dynamic range. The DF1760 is a high-performance decimating digital filter. The DF1760 accepts 4-bit 64fs data from the PCM1760 and decimates to 20-bit 1fs data. The FIR filter of the DF1760 has pass-band ripple of less than ±0.001d B and greater than 100d B of the reject band attenuation. PCM1760 DF1760 Analog Input (L) Analog Input (R) 4 Stage, 4-Bit Delta-Sigma Modulator 64fs 4 Stage, 4-Bit Delta-Sigma Modulator Timing Control and Interface 64fs 256fs 1/16 4fs Filter Filter fs Timing Control and...