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AK4551VT Datasheet(PDF) 1 Page - Asahi Kasei Microsystems |
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AK4551VT Datasheet(HTML) 1 Page - Asahi Kasei Microsystems |
1 / 15 page ASAHI KASEI [AK4551] MS0029-E-00 2000/5 - 1 - GENERAL DESCRIPTION The AK4551 is a low voltage 20bit A/D & D/A converter for portable digital audio system. In the AK4551, 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 AK4551 are single-ended, therefore, any external filters are not required. The AK4551 is suitable for portable digital audio system, as the AK4551 is lower power dissipation and a smaller package than AK4519. FEATURES o HPF for DC-offset cancel (fc=3.4Hz) o Single-ended ADC - S/(N+D): 82dB@VDD=2.5V - Dynamic Range, S/N: 89dB@VDD=2.5V o Single-ended DAC - Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling - S/(N+D): 85dB@VDD=2.5V - Dynamic Range, S/N: 92dB@VDD=2.5V o Audio I/F format: MSB First, 2’s Compliment (AK4519 compatible) - ADC: 20bit MSB justified - DAC: 20bit LSB justified o Input/Output Voltage: 0.6 X VDD (=1.5Vpp@VDD=2.5V) o High Jitter Tolerance o Sampling Rate: 8kHz to 50kHz o Master Clock: 256fs or 384fs or 512fs o Power Supply: 2.2 to 3.6V o Low Power Supply Current: 10mA o Ta = -20 to 85°C o Very Small Package: 16pin TSSOP Modulator MCLK VDD VSS AOUTL AINL LRCK SCLK VCOM AINR ∆Σ Modulator Decimation Filter Serial I/O Interface Common Voltage SDTO ∆Σ Decimation Filter SDTI PWDA DEM0 PWAD Clock Divider AOUTR 8X Interpolator 8X Interpolator ∆Σ Modulator ∆Σ Modulator LPF LPF DEM1 Low Power & Small Package 20bit ∆Σ CODEC AK4551 |
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