AK5354_04 Datasheet, PDF (1/19 Pages) Asahi Kasei Microsystems – Low Power 20bit ΔΣ ADC with PGA

ASAHI KASEI
[AK5354]
AK5354
Low Power 20bit ∆Σ ADC with PGA
FEATURES
The AK5354 is a low voltage 20bit A/D converter for digital audio system. The AK5354 also includes
Analog input PGA, therefore is suitable for microphone application and etc. As digital power supply of the
AK5354 corresponds to 1.8V, the interface with microprocessor can operate at low voltage. Analog signal
input of the AK5354 is single-ended, therefore, any external filters are not required. As the package is
16pin TSSOP, the AK5354 is a suitable for minimizing system.
FEATURES
1. Resolution : 20bits
2. Recording Functions
• 2-Stereo Inputs Selector
• Analog Input PGA
• Monaural Mixing
• Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)
3. ADC Characteristics
• Input Level : 1.5Vpp@VA=2.5V (= 0.6 x VA)
• S/(N+D) : 84dB
• DR, S/N : 89dB
4. 3-wire Serial Control I/F
5. Master Clock : 256fs/384fs
6. Audio Data Format : MSB First, 2’s compliment
• 20bit MSB justified or I²S
8. Power Supply
• VA : 2.1 ∼ 3.3V (typ. 2.5V)
• VD : 1.8 ∼ 3.3V (typ. 2.5V)
9. Power Supply Current
• IPGA + ADC : 7mA
10. Ta = -40 ∼ 85°C
11. Package : 16pin TSSOP
LIN1
LIN2
RIN1
RIN2
VCOM
VA
VSS
IPGA
ADC
HPF
Audio I/F
Controller
Control Register I/F
Clock Divider
LRCK
BCLK
SDTO
VD
PDN
CSN CCLK CDTI
MCLK
MS0054-E-02
-1-
2004/12