2V & Low Power Multi-Bit DAC

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The AK4352 is an 18bit low voltage & power stereo DAC for digital audio system. The AK4352 uses the new developed Multi-Bit Delta Sigma architecture, this new architecture achieves DR=94dB at low voltage operation. The AK4352 includes post filter with single-ended output and does not need any external parts. The AK4352 is suitable for the portable audio system like MD, etc as low power and small package.

Key Features

• Multi-Bit ΔΣDAC

• Sampling Rate Ranging: 8kHz to 50kHz

• On chip post filter

• On chip Buffer with Single-ended Output

• On chip Perfect filtering 8 times FIR interpolator

Passband: 20kHz

Passband Ripple: ±0.06dB

Stopband Attenuation: 43dB

• Digital Audio I/F format: 2’s compliment, MSB first

18bit MSB justified, 16/18bit LSB justified, I2S

• Digital de-emphasis for 44.1kHz sampling

• Master clock: 256fs or 384fs

• THD+N: -83dB@2V, -89dB@3V

• D-Range: 94dB@2V, 96dB@3V

• Output Voltage: 1.10Vpp@2V

• Low Voltage Operation: 2V (1.8 to 3.6V)

• Low power Dissipation: 6mW@2V

• Very Small Package: 16pin TSSOP

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