ADC16471

The ADC16071/ADC16471 are 16-bit delta-sigma analogto- digital converters using 64 c oversampling at 12.288 MHz. A 5th-order comb filter and a 246 tap FIR decimation filter are used to achieve an output data rate of up to192 kHz. The combination of oversampling and internal digital filtering greatly reduces the external anti-alias filter requirements to a simple RC low pass filter. The FIR filters offer linear phase response, 0.005 dB passband ripple, and t90 dB stopband rejection. The ADC16071/ADC16471's analog fourth-order modulator uses switched capacitor technology. A built-in fully-differential bandgap voltage reference is also included in the ADC16471. The ADC16071 has no internal reference and requires externally applied
reference voltages.

The ADC16071/ADC16471 use an advanced BiCMOS process for a low power consumption of 500 mW (max) while operating from a single 5V supply. A power-down mode reduces the power supply current from 100 mA (max) in the active mode to 1.3 mA (max).The ADC16071/ADC16471 are ideal analog-to-digital front ends for signal processing applications. They provide a complete high resolution signal acquisition system that requires a minimal external anti-aliasing filter, reference, or interface logic. The ADC16071/ADC16471's serial interface is compatiblewith the DSP56001, TMS320, and ADSP2100 digital signal processors.