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AK4520

100dB 20Bit Stereo ∆Σ ADC & DAC

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4520A]

AK4520A

100dB 20Bit Stereo ∆Σ ADC & DAC

General Description

The AK4520 is a stereo CMOS A/D & D/A converter for middle-range MD/DAT, Surround System and musical

instruments. Signal inputs and outputs are single-ended. The DAC outputs are analog filtered to remove out of

band noise. External components are minimized.

Features

† ∆Σ Stereo ADC

- 64x Oversampling

- S/(N+D): 90dB at 5V, 86dB at 3V

- Dynamic Range: 100dB at 5V, 96dB at 3V

- S/N: 100dB at 5V, 96dB at 3V

- Digital HPF for offset cancel

† ∆Σ Stereo DAC

- 128x Oversampling

- 2nd order SCF + 2nd order CTF

- Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling

- S/(N+D): 90dB at 5V, 90dB at 3V

- Dynamic Range: 100dB at 5V, 96dB at 3V

- S/N: 100dB at 5V, 96dB at 3V

† High Jitter Tolerance

† Sample Rate Ranging from 16kHz to 54kHz

† Master Clock: 256fs or 384fs

† 2.7 to 3.6V or 4.5 to 5.5V supply

† Low Power Dissipation: 255mW

† Small 28pin VSOP Package

0163-E-00

-1-

1997/3

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