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The PCM1760 and DF1760 combine for a low-cost, high-performance dual 20-bit, 48kHz 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 ±0.001dB and greater than 100dB of the reject band attenuation.
PCM1760P Maximum Ratings
Supply Voltage ..................................................................................... ±6V Voltage Mismatch ............................................................................... 0.1V Analog Input ........................................................................................ ±VCC Digital Input ............................................................................... +VDD +0.3V GND 0.3V Power Dissipation/P ....................................................................... 580mW Power Dissipation/U ....................................................................... 550mW Lead Temperature/P (soldering, 10s) .............................................. 260°C Lead Temperature/U (soldering, 10s) .............................................. 235°C Operating Temperature ......................................................... 0°C to +70°C Storage Temperature ...................................................... 50°C to +125°C
PCM1760P Features
DUAL 20-BIT MONOLITHIC MODULATOR (PCM1760) AND MONOLITHIC DECIMATING DIGITAL FILTER (DF1760) HIGH PERFORMANCE: THD+N: 92dB typ, 90dB max Dynamic Range: 108dB typ SNR: 108dB min, 110dB typ Channel Separation: 98dB typ, 94dB min 64X OVERSAMPLING CO-PHASE CONVERSION RUNS ON 256fs OR 384fs SYSTEM CLOCK VERSATILE INTERFACE CAPABILITY: 16-, 20-Bit Output MSB First or LSB First Format OPTIONAL FUNCTIONS: Offset Error Calibration Overflow Detection Power Down Mode (DF1760) RUNS ON ±5V SUPPLIES (PCM1760) AND 5V SUPPLY (DF1760) COMPACT 28-PIN PACKAGES: 28-Pin DIP and SOIC