AK7738VQ Datasheet, PDF (16/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

[AK7738]
3. MIC AMP + ADC1
(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
Differential Input
Input Voltage Differential Input
(Note 11)
(Note 12)
±2.1
±0.264
±2.3
±0.290
±2.5
±0.315
Vpp
(Note 13)
Single-ended Input
Single-ended Input
(Note 11) 2.1
(Note 12) 0.264
2.3
0.290
2.5
0.315
Vpp
fs=48kHz
(Note 11) 80
90
fs=48kHz
(Note 12)
82
S/(N+D)
(-1dBFS)
fs=96kHz
fs=96kHz
(Note 11)
(Note 12)
87
79
dB
fs=192kHz (Note 11, Note 14)
87
fs=192kHz (Note 12, Note 14)
79
MIC AMP
fs=48kHz (A-weighted) (Note 11) 94
102
+ ADC1
fs=48kHz (A-weighted) (Note 12)
90
Dynamic Range fs=96kHz
(-60dBFS)
fs=96kHz
(Note 11)
(Note 12)
95
87
dB
fs=192kHz
(Note 11)
95
fs=192kHz
(Note 12)
87
fs=48kHz (A-weighted) (Note 11) 94
102
fs=48kHz (A-weighted) (Note 12)
90
S/N
fs=96kHz
fs=96kHz
(Note 11)
(Note 12)
95
87
dB
fs=192kHz
(Note 11)
95
fs=192kHz
(Note 12)
87
Inter-Channel Isolation (fin=1kHz)
(Note 10) 90
105
dB
Channel Gain Mismatch
0.0
0.3 dB
Note 10. Inter-channel isolation with -1dBFS signal input.
Note 11. MGNL/R[3:0] bits = 0h (0dB). Input full-scale voltage is propotional to AVDD (0.7 x AVDD).
Note 12. MGNL/R[3:0] bits = 9h (+18dB). Input full-scale voltage is propotional to AVDD (0.088 x
AVDD).
Note 13. -0.7dBFS is output when fs=192kHz and ADC1 digital filter is set to Slow Roll-Off or Short Delay
Slow Roll-Off filter.
Note 14. In the case of inputting -1.6dBFS when fs=192kHz and ADC1 digital filter is set to Slow Roll-Off
or Short Delay Slow Roll-Off filter.
015000122-E-00-PB
- 16 -
2015/01