3V 104dB 192kHz 24-Bit 8ch DAC

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The AK4348 is an 8-channel 24bit DAC operating off of a single +3.3V power supply. The outputs are single-ended, and it samples at rates from 8kHz to 192kHz. It uses AKM’s advanced multi-bit architecture for the modulator to achieve a wide dynamic range while preserving linearity for improved THD+N performance. The output circuit includes a switched-cap filter and a second-order analog low pass filter, minimizing the need for external filtering.

Key Features

• Sampling Rate: 8kHz to 192kHz

• 24-Bit 8 times Digital Filter with Slow Roll-Off Option

• DR, S/N: 104dB

• THD+N: -90dB

• High Tolerance to Clock Jitter

• Single Ended Output Buffer with Second Order Analog LPF

• Digital De-emphasis for 32, 44.1 & 48kHz sampling

• Zero Detect Function

• Channel Independent Digital Attenuator (Linear 256 steps)

• 3-wire Serial or I2C Control

• I/F format: MSB justified, LSB justified (16, 20, 24-bit), I2S, TDM

• Master clock: 256fs, 384fs, 512fs or 768fs or 1152fs (Normal Speed Mode)

128fs, 192fs, 256fs or 384fs (Double Speed Mode)

128fs or 192fs (Quad Speed Mode)

• Power Supply: 2.7V to 3.6V

• Ta = -20 to 85°C (EF), -40 to 85°C (VF)

• Package: 30-pin VSOP

• AK4359 Pin Compatible

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