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