Description

The AK4351VT is a high-performance stereo DAC for low-end digital audio systems belonging to the IC Chips category. It utilizes the latest Advanced Multi Bit architecture technology for its modulator, resulting in a wide dynamic range. The analog outputs are filtered in the analog domain by a combination of SCF and CTF, which eliminates the need for external filters. This feature also improves the loss of accuracy from clock jitter, making it a suitable option for a system like STB including PLL circuit. It is available in a compact 16 pin TSSOP package, which helps to reduce system space.

Specifications and features

• Sampling Rate Ranging from 8kHz to 50kHz
• 128 times Oversampling
• 18bit 8 times FIR Interpolator with 57dB attenuation
• 2nd order LPF
• Total Response: – 0.2dB at 20kHz
• On chip Buffer with Single End Output
• Digital de-emphasis for 44.1kHz sampling
• I/F format: MSB justified, 16/18bit LSB justified or I2S
• Master clock: 256fs or 384fs
• TTL Level Digital Interface
• THD+N: -88dB
• D-Range: 96dB
• High Tolerance to Clock Jitter
• Power supply: 4.5 to 5.5V
• Very Small Package: 16pin TSSOP (6.4mm x 5.0mm)

Application Scenarios

The AK4351VT is very suited for low-end digital audio systems like set-top boxes that have a PLL circuit. Due to its compact size, it is an excellent option for systems that require saving space for other components.

Comparison

• Advanced Multi Bit architecture technology for its modulator, resulting in a wide dynamic range.
• Analog outputs are filtered in the analog domain by a combination of SCF and CTF, thus eliminating the need for external filters
• High tolerance to clock jitter
• Compact package, which helps to reduce system space

Not suitable for high-end digital audio systems due to its high THD + N value of - 88dB