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 I
2
S 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
AKM [ ASAHI KASEI MICROSYSTEMS ]
