AK4556 Datasheet | Asahi Kasei Microdevices

DESCRIPTION The AK4556 is a low voltage 24bit 192k Hz CODEC for high performance battery powered digital audio subsystems. The dynamic performance to power supply voltage ratio is very high, attaining 103d B and 106d B SNR for ADC and DAC, respectively. Sampling rates up to 216k Hz are supported. The AK4556 reduces jitter sensitivity by using an integrated switched-capacitor filter. The analog inputs and outputs are single-ended to minimize pin count and external filtering requirements. Packaged in a very small 20-pin TSSOP, the AK4556 is ideal for space-sensitive applications. FEATURES † Single-ended ADC - Dynamic Range, S/N: 103d B@VA=3.0V - S/(N+D): 91d B@VA=3.0V - HPF for DC-offset cancel (fc = 1Hz @ fs=48k Hz) - HPF can be disabled † Single-ended DAC - Dynamic Range, S/N: 106d B@VA=3.0V - S/(N+D): 90d B@VA=3.0V - Digital de-emphasis for 32k Hz, 44.1k Hz and 48k Hz sampling † Audio I/F format: MSB First, 2’s plement - ADC: 24bit MSB justified or I2S patible - DAC: 24bit MSB justified, 24bit LSB justified or I2S patible † Input/Output Voltage: ADC = 2.1Vpp @ VA=3.0V DAC = 2.1Vpp @ VA=3.0V † Master/Slave mode † Sampling Rate: - Normal Speed: 8k Hz to 54k Hz (256fs or 512fs) 8k Hz to 48k Hz (384fs or 768fs) - Double Speed: 54k Hz to 108k Hz (256fs) 48k Hz to 96k Hz (384fs) - Quad Speed: 108k Hz to 216k Hz (128fs) 96k Hz to 192k Hz (192fs) † Master Clock: - Slave mode: 256fs, 384fs, 512fs or 768fs (Normal Speed) 256fs or 384fs (Double Speed) 128fs or 192fs (Quad Speed) - Master mode: 256fs or 512fs (Normal Speed) 256fs (Double Speed) 128fs (Quad Speed) † Power Supply: 2.4 to 3.6V (Normal Speed, Double Speed) 2.7 to 3.6V (Quad Speed) † Power Supply Current: 27.5m A † Ta = -40 to 85°C † Very Small Package: 20pin TSSOP † Upper patible with AK4552 MS0559-E-00 -1- 2006/11 .. ASAHI KASEI [AK4556] VSS ∆Σ Modulator ∆Σ Modulator VD Decimation Filter Decimation Filter PDN Clock Divider MCLK LRCK BCLK SDTO SDTI CKS3 CKS2 CKS1 CKS0 8X Interpolator DEM0 DEM1 V mon Voltage...