AK4550

ASAHI KASEI [AK4550] AK4550 Low Power & Small Package 16bit ∆Σ CODEC GENERAL DESCRIPTION The AK4550 is a low voltage 16bit A/D & D/A converter for portable digital audio system. In the AK4550, 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 AK4550 are single-ended, therefore, any external filters are not required. The AK4550 is suitable for portable digital audio system, as the AK4550 is lower power dissipation and a smaller package than AK4518. 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 (AK4518 compatible) - ADC: 16bit MSB justified - DAC: 16bit LSB justified o Input/Output Voltage: 0.6 X VDD (=1.5Vpp@VDD=2.5V) o High Jitter ...