AK4554 Datasheet | Asahi Kasei Microdevices

DESCRIPTION The AK4554 is a low voltage 16bit A/D & D/A converter for portable digital audio system. In the AK4554, 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 AK4554 are single-ended, therefore, any external filters are not required. The AK4554 is suitable for portable digital audio system, as the AK4554 is low power dissipation and a small package. FEATURES † HPF for DC-offset cancel (fc=3.4Hz) † Single-ended ADC - S/(N+D): 80d B@VDD=2.5V - Dynamic Range, S/N: 89d B@VDD=2.5V † Single-ended DAC - Digital de-emphasis for 32k Hz, 44.1k Hz, 48k Hz sampling - S/(N+D): 85d B@VDD=2.5V - Dynamic Range, S/N: 92d B@VDD=2.5V † Audio I/F format: MSB First, 2’s pliment (AK4550 patible) - ADC: 16bit MSB justified - DAC: 16bit LSB justified † Input/Output Voltage: 0.6 x VDD (=1.5Vpp@VDD=2.5V) † High Jitter Tolerance † Sampling Rate: 8k Hz to 50k Hz † Master Clock: 256fs/384fs/512fs/768fs (fs=8k Hz to 50k Hz) 1024fs (fs=8k Hz to 25k Hz) † Power Supply: 1.6 to 3.6V † Low Power Supply Current: 8m A † Ta = - 40 to 85°C † Very Small Package: 16pin TSSOP VDD VSS ∆Σ Modulator ∆Σ Modulator mon Voltage ∆Σ Modulator ∆Σ Modulator 8X Interpolator 8X Interpolator PWDAN PWADN Decimation Filter Decimation Filter Serial I/O Interface Clock Divider MCLK LRCK SCLK SDTO SDTI DEM0 AOUTL LPF DEM1 AINL AINR AOUTR MS0325-E-01 -1- 2005/08 .. ASAHI KASEI [AK4554] - Ordering Guide AK4554VT AKD4554 - 40 ∼ +85°C 16pin TSSOP (0.65mm pitch) Evaluation Board for AK4554 - Pin Layout V AINR AINL VSS VDD DEM0 DEM1 SDTO 1 2 3 4 5 6 7 8 16 15 14 AOUTR AOUTL PWDAN PWADN SCLK MCLK LRCK SDTI Top View 13 12 11 10 9 - parison with AK4550 Item Power Supply Voltage V pin ADC S/(N+D) (typ) ADC Input Resistance (typ) ADC PSRR (typ) Power Supply Current (typ) AD+DA AD DA DAC Digital Filter Stopband Attenuation (min) Passband Ripple (max) Group Delay MCLK External Circuit V pin AINL, AINR pins AK4550 2.3 ∼ 3.6V 0.45 x VDD...