AK4309B

Features:

Sampling Rate Ranging from 8kHz to 50kHz
On chip Perfect filtering
        ` 8 times FIR Interpolator
        ` 2nd order SCF and CTF
        ` Total Response: ±0.5dB at 20kHz
On chip Buffer with Single End Output
Master Clock: 256fs or 384fs
High Tolerance to Clock Jitter
TTL Level Digital Interface
THD+N: -84dB
Dynamic Range: 90dB
Output Level: 3.4Vpp
Power Supply: 5V±10%
Low Power Dissipation: 80mW at 5V
Small Package: 20pin SSOP
Pin Compatible with AK4310/4309A


Pinout




Specifications

(AVSS,DVSS=0V; Note 1 )

Parameter		Symbol	min	max	Units
Power Supplies:	Analog Digital DVDD-AVDD	AVDD DVDD VDA	-0.3 -0.3 -	6.0 6.0 0.3	V V V
Input Current, Any Pin Except Supplies		IIN	-	±10	mA
Input Voltage		VINA	-0.3	AVDD+0.3	V
Ambient Temperature (Powered applied)		Ta	-40	85	°C
Storage Temperature		Tstg	-65	150	°C

Note: 1 . All voltages with respect to ground.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.Normal operation is not guaranteed at these extremes.


Description

The AK4309B is a 1bit stereo DAC for multimedia audio systems. A 1bit DAC can achieve monotonicity and low distortion with no adjustment and is superior to traditional R-2R ladder based DACs. In the product, the loss of accuracy from clock jitter is also improved by using SCF techniques for on-chip post filter. The AK4309B includes continuous time filter with single end output and does not need any external parts. The master clock can be either 256fs or 384fs, supporting various audio environment.