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AK4420
5V，192kHz，24位2声道DAC配有2Vrms输出
5V 192kHz 24-Bit 2ch DAC with 2Vrms Output
The AK4420 is a 5V 24-bit stereo DAC with an integrated 2Vrms output buffer. A charge pump in the buffer develops an internal negative power supply rail that enables a ground-referenced 2Vrms output. Using AKM’s multi bit modulator architecture, the AK4420 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4420 integrates a combination of switched-capacitor and continuous-time filters, increasing performance for systems with excessive clock jitter. The 24-bit word length and 192kHz sampling rate make this part ideal for a wide range of consumer audio applications, such as DVD, AV receiver system and set-top boxes. The AK4420 is offered in a space saving 16pin TSSOP package.
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Features
  1. Applications: Set Top Boxes, DVD Recorders/Players, Digital TVs, and AV Receivers
  2. Sampling Rate Ranging from 8kHz to 192kHz
  3. 128 times Oversampling (Normal Speed Mode)
  4. 64 times Oversampling (Double Speed Mode)
  5. 32 times Oversampling (Quad Speed Mode)
  6. 24-Bit 8 times FIR Digital Filter
  7. Switched-Capacitor Filter with High Tolerance to Clock Jitter
  8. Single Ended 2Vrms Output Buffer
  9. Digital de-emphasis
  10. Soft mute
  11. I/F format: 24-Bit MSB justified or I2S
  12. Master clock: 512fs, 768fs or 1152fs (Normal Speed Mode)
    adj256fs or 384fs (Double Speed Mode)
    adj128fs, 192fs (Quad Speed Mode)
  13. THD+N: -92dB
  14. Dynamic Range: 105dB
  15. Automatic Power-on Reset Circuit
  16. Power supply: +4.5 ~ +5.5V
  17. Ta = -20 to 85°C
  18. Small Package: 16pin TSSOP (6.4mm x 5.0mm)
  19. Evaluation Board: AKD4420
AK4420 BLOCK DIAGRAM
AK4340 Diagram
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Further Information


Data Sheet Download Datasheet
AK4420
August 2008
Data Sheet Download Eva. Board Manual
AKD4420
August 2008


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