AK7758VN Datasheet, PDF (18/32 Pages) Asahi Kasei Microsystems – DSP with Stereo CODEC + Mic/Lineout Amp

[AK7758]
8.1.7. DAC + Lineout Amp
(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.
Resolution
24
Dynamic Characteristics (OUT1,OUT2,OUT3)
S/(N+D) (0 dBFS)
fs=48kHz
80
89
Dynamic Range (-60dBFS) fs=48kHz (A-weighted) 100
106
DAC ^S/N
fs=48kHz (A-weighted) 100
106
+ ^{Inter-Channel Isolation (f=1kHz) (Note 25)}
90
110
Lineout _{DC Accuracy}
Amp _{Channel Gain Mismatch}
0.0
0.5
Analog Output
Output Voltage (Note 26)
2.28
2.51
2.74
Load Resistance
10
Load Capaitance
30
Note 25. Indicates inter-channel isolation between Lch and Rch of DAC.
Note 26. Full-scale output voltage. The output voltage is proportional to AVDD (AVDD x 0.76).
Unit
bit
dB
dB
dB
dB
dB
Vp-p
kΩ
pF
8.1.8. MIC Amp + Line-out Amp
(Ta= 25°C; AVDD=LVDD=TVDD1/2=3.3V; AVSS=DVSS=0V; LDOE pin =“H”
Signal Frequency 1kHz; Measurement Frequency =20Hz~20kHz)
Parameter
Min. Typ.
Dynamic Characteristics (differential Input)
S/(N+D) (0dBFS)
(Note 29)
77
82
(Note 30)
82
Dynamic Range (-60dBFS)
(Note 29) 101
104
MIC Amp ^(A-weighted)
(Note 30)
93
+
Line-out
S/N (A-weighted)
Amp _{Analog Input}
(Note 29) 101
104
(Note 30)
93
Input Voltage (differential Input)
(Note 29) ±2.28 ±2.51
(Note 27)
(Note 30)
±0.316
Input Voltage (single-ended Input) (Note 29) 2.28 2.51
(Note 28)
(Note 30)
0.316
Note 27. The INP1/INN1 and INP2/INN2 pins
Note 28. The IN1, IN2, IN3 and IN4 pins
Note 29. MGNL/R[3:0] bits = 0x0 (0dB)
Note 30. MGNL/R[3:0] bits = 0x9 (18dB)
Max.
±2.74
2.74
Unit
dB
dB
dB
dB
dB
dB
Vp-p
Vp-p
Vp-p
Vp-p
016003563-E-02-PB
- 18 -
2016/09