GENERAL DESCRIPTION

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.

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 ∼ 85°C (EF), −40 ∼ 85°C (VF)

□ Package: 30-pin VSOP

□ AK4359 Pin Compatible