AK4628

Features:

2ch 24bit ADC
             - 64x Oversampling
             - Sampling Rate up to 96kHz
             - Linear Phase Digital Anti-Alias Filter
             - Single-Ended Input
             - S/(N+D): 92dB
             - Dynamic Range, S/N: 102dB
             - Digital HPF for offset cancellation
             - I/F format: MSB justified, I2S or TDM
             - Overflow flag
8ch 24bit DAC
             - 128x Oversampling
             - Sampling Rate up to 192kHz
             - 24bit 8 times Digital Filter
             - Single-Ended Outputs
             - On-chip Switched-Capacitor Filter
             - S/(N+D): 90dB
             - Dynamic Range, S/N: 106dB
             - I/F format: MSB justified, LSB justified(20bit,24bit), I2S or TDM
             - Individual channel digital volume with 128 levels and 0.5dB step
             - Soft mute
             - De-emphasis for 32kHz, 44.1kHz and 48kHz
             - Zero Detect Function
High Jitter Tolerance
TTL Level Digital I/F
3-wire Serial and I2C Bus P I/F for mode setting
Master clock: 256fs, 384fs or 512fs for fs=32kHz to 48kHz
                          128fs, 192fs or 256fs for fs=64kHz to 96kHz
                          128fs for fs=120kHz to 192kHz
 Power Supply: 4.5 to 5.5V
Power Supply for output buffer: 2.7 to 5.5V
Small 44pin LQFP
AK4529 Pin Compatible


Pinout




Specifications

(AVSS, DVSS=0V; Note 1)

Parameter		Symbol	min	max	Units
Power Supplies	Analog Digital Output buffer |AVSS-DVSS| (Note 2)	AVDD DVDD TVDD GND	-0.3 -0.3 -0.3 -	6.0 6.0 6.0 0.3	V V V V
Input Current, Any Pin Except Supplies		IIN	-	±10	mA
Analog Input Voltage		VINA	-0.3	AVDD+0.3	V
Digital Input Voltage (Expect LRCK, BICK pins) (LRCK, BICK pins)		VIND1 VIND2	-0.3 -0.3	DVDD+0.3 TVDD+0.3	V V
Ambient Temperature (powered applied)		Ta	-40	85	°C
Storage Temperature		Tstg	-65	150	°C

Notes: 1 All voltages with respect to ground.
            2. AVSS and DVSS must be connected to the same analog ground plane.
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 AK4628 is a single chip CODEC that includes two channels of ADC and eight channels of DAC. The ADC outputs 24bit data and the DAC accepts up to 24bit input data. The ADC has the Enhanced Dual Bit architecture with wide dynamic range. The DAC introduces the newly developed Advanced Multi-Bit architecture, and achieves wider dynamic range and lower outband noise. An auxiliary digital audio input interface maybe used instead of the ADC for passing audio data to the primary audio output port. Control may be set directly by pins or programmed through a separate serial interface.The AK4628 has a dynamic range of 102dB for ADC, 106dB for DAC and is well suited for digital surround for home theater and car audio. An AC-3 system can be built with a IEC60958(SPDIF) receiver such as the AK4112B. The AK4628 is available in a small 44pin LQFP package which will reduce system space.
*AC-3 is a trademark of Dolby Laboratories.