AK4317 Datasheet | Asahi Kasei Microdevices

ASAHI KASEI [AK4317] 18Bit SCF DAC with ATT & MIXER General Description The AK4317 is a 1bit stereo DAC with channel separated volume and channel mixer. This DAC also includes 18bit digital filter and analog LPF. A 1bit DAC can achieve monotonicity and low distortion with no adjustment and is superior to traditional R-2R ladder based DACs. In the AK4317, the loss of accuracy from clock jitter is also improved by using SCF techniques for on-chip post filter. Therefore, the AK4317 is suitable for the system like STB including PLL circuit. Features † Sampling Rate Ranging from 8k Hz to 50k Hz † On chip Perfect filtering - 8 times FIR Interpolator - 2nd order SCF - 2nd order CTF † Digital de-emphasis for 32, 44.1, 48k Hz sampling † L/R Separated Volume † L/R Mixing † Soft Mute † Audio I/F format : MSB justified, LSB justified, I2S † Master Clock: 256fs or 384fs † High Tolerance to Clock Jitter † THD+N: -86d B † DR: 92d B † Power Supply:4.5 to 5.5V † Small Package: 24pin VSOP † AK4311 patible 0172-E-01 -1- 1997/5 ASAHI KASEI [AK4317] - Ordering Guide AK4317-VF AKD4317 - Pin Layout -40∼+85°C Evaluation Board 24pin VSOP(0.65mm pitch) - patibility with AK4311/A 1. Changed Specs Parameter Resolution Operating Temperature Power Supply Digital I/F level X'tal Oscillator DR Package AK4311 16bit -40∼85°C 3∼5.5V CMOS Yes 92d B SSOP AK4311A 16bit -10∼70°C 3∼5.5V CMOS Yes 91d B SSOP AK4317 16/18bit -40∼85°C 4.5∼5.5V TTL No 92d B VSOP 2. Pin patibility The following pin functions are changed from AK4311/A. But when X'tal oscillating circuit is not used, it is possible to change AK4311/A to AK4317 without changing the board layout. Pin No. 4 6 AK4311/A XTO CLKO AK4317 DIF0 DIF1 0172-E-01 -2- 1997/5 ASAHI KASEI [AK4317] PIN/FUNCTION No. 1 2 3 Pin Name DVDD DVSS PD I/O I Digital Power Supply Digital Ground Pin Function Power-Down Mode Pin When at "L", the AK4317 is in power-down mode and is held in reset. The AK4317 should always be reset upon power-up....