AK7738VQ Datasheet, PDF (18/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

[AK7738]
5. ADCM
(Ta=25C; AVDD=LVDD=TVDD1=TVDD2=VDD33=3.3V; AVSS= DVSS1=DVSS2=DVSS3=0V;
Signal Frequency=1kHz; 24-bit Data, BICK = 64fs; Measurement Frequency=20Hz ~ 20kHz @ fs=48kHz;
Measurement Frequency=20Hz ~ 40kHz @ fs=96kHz and fs=192kHz, Differential Input, Unless otherwise
specified.)
Parameter
min
typ
max Unit
Resolution
24 Bit
Input Impedance
14
20
26 kΩ
Input Voltage Differential Input (Note 20) ±2.1 ±2.3 ±2.5 Vpp
(Note 22)
Single-ended Input (Note 21) 2.1
2.3
2.5 Vpp
S/(N+D)
ADCM (-1dBFS)
fs=48kHz
fs=96kHz
fs=192kHz
80
90
87
(Note 23)
87
dB
Dynamic Range
(-60dBFS)
fs=48kHz (A-weighted)
fs=96kHz
fs=192kHz
94
102
95
95
dB
fs=48kHz (A-weighted)
94
102
S/N
fs=96kHz
95
dB
fs=192kHz
95
Note 20. AINMP and AINMN pins.
Note 21. AINM pin.
Note 22. -0.7dBFS is output when fs=192kHz and ADCM digital filter is set to Slow Roll-Off or Short
Delay Slow Roll-Off filter.
Note 23. In the case of inputting -1.6dBFS when fs=192kHz and ADCM digital filter is set to Slow
Roll-Off or Short Delay Slow Roll-Off filter.
6. DAC
(Ta=25C; AVDD= LVDD =TVDD1=TVDD2= VDD33=3.3V; AVSS= DVSS1=DVSS2=DVSS3=0V;
Signal Frequency=1kHz; 32-bit Data, BICK = 64fs; Measurement Frequency=20Hz ~ 20kHz @ fs=48kHz;
Measurement Frequency=20Hz ~ 40kHz @ fs=96kHz and fs=192kHz; Unless otherwise specified. )
Parameter
min
typ
max Unit
Resolution
32
Bit
Output Voltage
(Note 24) 2.55 2.83 3.11 Vpp
S/(N+D)
(0dBFS)
fs=48kHz
fs=96kHz
fs=192kHz
80
91
89
dB
89
fs=48kHz (A-weighted)
100
108
DAC1
DAC2
Dynamic Range
(-60dBFS)
fs=96kHz
fs=192kHz
101
dB
101
fs=48kHz (A-weighted)
100
108
S/N
fs=96kHz
101
dB
fs=192kHz
101
Inter-Channel Isolation (fin=1kHz)
(Note 25)
90
110
dB
Channel Gain Mismatch
0.0
0.7
dB
Load Resistance
(Note 26)
10
kΩ
Load Capaitance
30
pF
Note 24. The output voltage when 0dBFS signal input. The output voltage is proportional to AVDD
(AVDD x 0.86).
Note 25. Inter-channel isolation between each DAC of Lch and Rch with 0dBFS signal input. (AOUT1L
and AOUT1R, and AOUT2L and AOUT2R)
Note 26. to AC load
015000122-E-00-PB
- 18 -
2015/01