AK7738VQ Datasheet, PDF (17/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

[AK7738]
4. ADC2
(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
Differential Input
(Note 15) ±2.1 ±2.3 ±2.5 Vpp
Input Voltage
(Note 18)
Single-ended Input (Note 16)
Pseudo Differential Input (Note 17)
2.1
2.1
2.3
2.3
2.5 Vpp
2.5 Vpp
ADC2
S/(N+D)
(-1dBFS)
fs=48kHz
fs=96kHz
fs=192kHz
80
90
87
(Note 19)
87
dB
Dynamic Range
(-60dBFS)
fs=48kHz (A-weighted)
fs=96kHz
fs=192kHz
94
102
95
dB
95
fs=48kHz (A-weighted)
94
102
S/N
fs=96kHz
95
dB
fs=192kHz
95
Inter-Channel Isolation (fin=1kHz)
(Note 10) 90
105
dB
Channel Gain Mismatch
0.0
0.3 dB
Note 15. AIN2LP, AIN2LN, AIN2RP and AIN2RN pins.
Note 16. AIN3L, AIN3R, AIN4L and AIN4R pins.
Note 17. AIN5L and AIN5R pins.
Note 18. -0.7dBFS is output when fs=192kHz and ADC2 digital filter is set to Slow Roll-Off or Short Delay
Slow Roll-Off filter.
Note 19. In the case of inputting -1.6dBFS when fs=192kHz and ADC2 digital filter is set to Slow Roll-Off
or Short Delay Slow Roll-Off filter.
015000122-E-00-PB
- 17 -
2015/01