AK4551

Features:

HPF for DC-offset cancel (fc=3.4Hz)
Single-ended ADC
     - S/(N+D): 82dB@VDD=2.5V
     - Dynamic Range, S/N: 89dB@VDD=2.5V
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
Audio I/F format: MSB First, 2's Compliment (AK4519 compatible)
    - ADC: 20bit MSB justified
    - DAC: 20bit LSB justified
Input/Output Voltage: 0.6 X VDD (=1.5Vpp@VDD=2.5V)
High Jitter Tolerance
Sampling Rate: 8kHz to 50kHz
Master Clock: 256fs or 384fs or 512fs
Power Supply: 2.2 to 3.6V
Low Power Supply Current: 10mA
Ta = -20 to 85°C
Very Small Package: 16pin TSSOP


Pinout




Specifications

(VSS=0V; Note 1)

Parameter	Symbol	min	max	Units
Power Supplies	VDD	-0.3	4.6	V
Input Current, Any Pin Except Supplies	IIN	-	±10	mA
Input Voltage	VIN	-0.3	VDD+0.3	V
Ambient Temperature (powered applied)	Ta	-20	85	°C
Storage Temperature	Tstg	-65	150	°C

Note 1. All voltages with respect to ground.


Description

The AK4551 is a low voltage 20bit A/D & D/A converter for portable digital audio system. In the product,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 product are single-ended, therefore, any external filters are not required. The AK4551 is suitable for portable digital audio system, as the AK4551 is lower power dissipation and a smaller package than AK4519.