AK5356 Datasheet, PDF (1/22 Pages) Asahi Kasei Microsystems – LOW POWER 20BIT ADC WITH MIC AMP & PGA

ASAHI KASEI
[AK5356]
AK5356
Low Power 20-Bit ADC with MIC-Amp & PGA
GENERAL DESCRIPTION
The AK5356 is a low voltage 20bit A/D converter for digital audio system. The AK5356 also includes
microphone amplifier and analog input PGA, making it suitable for microphone applications or low-input
signal levels. As digital power supply of the AK5356 corresponds to 1.8V, the interface with
microprocessor can operate at low voltage. The AK5356 is housed in a space-saving 28-pin QFN
package.
FEATURES
1. MIC Block
• MIC Power
• Pre-Amplifier (+13dB / +18dB / +28dB / +33dB)
2. 20bit 2ch ADC
• 2-Input Stereo Selector
• Analog Input PGA: +28dB ∼ - 52dB, Mute
• S/(N+D): 84dB
• DR, S/N: 89dB
• Monaural Mixing
• Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)
3. 3-wire Serial Control I/F
4. Master Clock: 256fs/384fs
5. Audio Data Format: MSB First, 2’s compliment
• 16/20bit MSB justified or 16/20bit I²S compatible
6. Power Supply Voltage
• AVDD: 2.0 ∼ 3.3V
• MVDD: 2.4 ∼ 3.3V
• DVDD: 1.8 ∼ 3.3V
7. Power Supply Current
• MIC Block: 3.4mA
• IPGA+ADC: 6mA
8. Ta = - 40 ∼ 85°C
9. Package: 28pin QFN
MS0171-E-00
-1-
2002/08