AK4519

ASAHI KASEI [AK4519] AK4519 Low Power 20 bit ∆Σ ADC&DAC with HPF GENERAL DESCRIPTION AK4519 is low voltage 20bit A/D & D/A converter for portable digital audio system. In the AK4519, the loss of accuracy form clock jitter is also improved by using SCF techniques for on-chip post filter. Analog signal input/output of the AK4519 are single-ended, therefore, external filter is not required. The AK4519 is low power dissipation and be able to powered-down ADC and DAC independently, so the AK4519 is suitable for portable digital audio system. FEATURES † HPF for DC-offset cancel (fc=3.4Hz) † Single-ended ADC - S/(N+D): 83dB - Dynamic Range, S/N: 89dB at 2.5V, 90dB at 3V † Single-ended DAC - 2nd order SCF + 2nd order CTF - Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling - S/(N+D): 83dB - Dynamic Range, S/N: 92dB at 2.5V, 93dB at 3V † Audio I/F format - ADC:20bit MSB justified, DAC:20bit LSB justified, MSB First, 2's Compliment † High Jitter Tolerance † Sampling Rate: 8kHz to 50kHz † Master Clock: 256fs or 384fs or 512fs † Power Supply: 2.4 to 4.0V † Low Power Dissipation: 33.3mW at 2.5V, 41.1mW at 3V † Small 24pin VSOP Package M0015-E-01 -1- 1998/11 ASAHI KASEI „ Ordering Guide AK4519VF -10∼+70°C 24pinVSOP (0.65mm Pitch) AKD4519 Evaluation board for AK4519 „ Pin Layout [AK4519] M0015-E-01 -2- 1998/11 ASAHI KASEI [AK4519] No. Pin Name 1 VRDA 2 VRAD 3 AINR 4 VCMR 5 VCML 6 AINL 7 PWAD 8 PWDA 9 MCLK 10 LRCK 11 SCLK 12 SDTO 13 DGND 14 VD 15 SDTI 16 CMODE 17 DEM1 1...