AK7758VN Datasheet, PDF (15/32 Pages) Asahi Kasei Microsystems – DSP with Stereo CODEC + Mic/Lineout Amp

[AK7758]
8.1.3. MIC Amp + ADC
(Ta= 25°C; AVDD=LVDD=TVDD1/2=3.3V; AVSS=DVSS=0V; LDOE pin =“H”
Signal Frequency 1kHz; Sampling Rate fs=48kHz; Measurement Frequency =20Hz~20kHz)
Parameter
Min. Typ. Max. Unit
MIC Amp Input Impedance
14
20
kΩ
Resolution
24
bit
Dynamic Characteristics (Differential Input mode)
S/(N+D)
fs=48kHz (Note 16)
80
91
dB
(-1dBFS)
fs=48kHz (Note 17)
88
dB
Dynamic Range fs=48kHz (A-weighted) (Note 16) 94
102
dB
(-60dBFS)
fs=48kHz (A-weighted) (Note 17)
93
dB
MIC Amp
+
ADC
S/N
fs=48kHz (A-weighted) (Note 16)
fs=48kHz (A-weighted) (Note 17)
Inter-Channel Isolation (Note 13)
94
90
102
93
105
dB
dB
dB
DC Accuracy (Differential Input)
Channel Gain Mismatch
0.0
0.3
dB
Analog Input
Input Voltage (Differential Input)
(Note 16) ±2.0 ±2.2 ±2.4 Vp-p
(Note 14)
(Note 17)
±0.277
Vp-p
Input Voltage (Single-ended Input)
(Note 16) 2.0
2.2
2.4 Vp-p
(Note 15)
(Note 17)
0.277
Vp-p
Note 13. Indicates inter-channel isolation between Lch and Rch when –1dBFS signal is input.
Note 14. INP1/INN1 and INP2/INN2 pins.
Note 15. IN1, IN2, IN3 and IN4 pins.
Note 16. MGNL/R[3:0] bits = 0x0 (0dB)
Note 17. MGNL/R[3:0] bits = 0x9 (18dB)
016003563-E-02-PB
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2016/09