AK4558EN Datasheet, PDF (1/94 Pages) Asahi Kasei Microsystems – 108dB 216kHz 32Bit CODEC with PLL

[AK4558]
AK4558
108dB 216kHz 32Bit  CODEC with PLL
1. General Description
The AK4558 is a low voltage 32bit 216kHz CODEC for high performance battery powered digital audio
subsystems. An internal circuit includes newly developed 32-bit Digital Filter achieving short group delay
and high quality sound. In addition, “OSR-Doubler” technology is newly adopted, making the AK4558
capable of supporting wide range signals and achieving low out-of-band noise while realizing low power
consumption. The AK4558 is ideal for a wide range of applications that demands high sound quality
including Electronic musical instruments and Audio Interfaces. The analog inputs and outputs are
single-ended to minimize pin count and external filtering requirements. The AK4558 is housed in a very
small 28-pin QFN. It is ideal for space-sensitive applications.
2. Features
 Single-ended ADC
- Dynamic Range, S/N: 108dB@AVDD=3.3V
- S/(N+D):
92dB@AVDD=3.3V
- Selectable HPF for DC-offset cancel (fc = 1Hz @ fs=48kHz)
- 4-types Digital Filter for High Sound Quality
 Single-ended DAC
- Dynamic Range, S/N: 108dB@AVDD=3.3V
- S/(N+D):
100dB@AVDD=3.3V
- Digital de-emphasis for 32kHz, 44.1kHz and 48kHz sampling
- 5-types Digital Filter for High Sound Quality
- Channel Independent Digital Attenuator (256 levels, 0.5dB steps)
 Audio I/F format: MSB First, 2’s Complement
- ADC: 24/32bit MSB justified , 24/32bit I²S compatible or TDM
- DAC: 24/32bit MSB justified, 16/20/24/32bit LSB justified,
24/32bit I²S compatible or TDM
 Input/Output Voltage: ADC = 2.64Vpp @ AVDD=3.3V
DAC = 2.51Vpp @ AVDD=3.3V
 Master/Slave mode
 P I/F: I²C Bus
 Sampling Rate:
(1) PLL Mode
• PLL Slave Mode (LRCK pin): fs = 8kHz  216kHz
• PLL Slave Mode (BICK pin): fs = 8kHz  216kHz
• PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz,
48kHz, 54kHz, 88.2kHz, 96kHz, 128kHz, 176.4kHz, 192kHz
(2) External Clock Mode
• Normal Speed: 8kHz to 54kHz
(256fs or 512fs)
8kHz to 48kHz
(384fs or 768fs)
• Double Speed: 54kHz to 108kHz (256fs)
48kHz to 96kHz (384fs)
• Quad Speed: 108kHz to 216kHz (128fs)
96kHz to 192kHz
(192fs)
015004500-E-02
-1-
2015/09