Description

The HI2570, CXD2570 is a 1-bit stereo AD/DA converter which uses a 2nd-order ∆∑ system noise shaper. This LSI is especially suited for sampling frequency between 8kHz and 32kHz.

Features

• Two-Channel AD/DA Converters and Their Each Decimation and Oversampling Digital Filter in a Single Chip

• Simplified External Parts with a Built-In Analog Circuit Around AD Converter

• Distortion

- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.015

- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.009 (-3dB)

• S/N Ratio (Typical Values when FS = 16kHz)

- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80dB

- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90dB

• Ripple in the Digital Filter Pass Band . . . . . . . ±0.05dB<

• Attenuation in the Digital Filter Rejection Band. . . 45dB>

Applications

- Telephones, TV Conference Systems, Language Laboratory Equipment, TV Game Equipment and Electronic Musical Instrument