AK7758VN Datasheet, PDF (17/32 Pages) Asahi Kasei Microsystems – DSP with Stereo CODEC + Mic/Lineout Amp

[AK7758]
8.1.5. Line-in 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. Max. Unit
Line-in
Amp
Input Impedance
14
20
kΩ
Dynamic Characteristics
S/(N+D) (0dBFS)
(Note 23)
77
81
dB
(Note 24)
82
dB
Line-in
Amp
+
Line-out
Amp
Dynamic Range (-60dBFS)
(A-weighted)
S/N (A-weighted)
(Note 23)
95
103
(Note 24)
92
(Note 23)
95
103
(Note 24)
92
dB
dB
dB
dB
Analog Input
Input Voltage (Note 22)
(Note 23)
(Note 24)
2.28
2.51 2.74 Vp-p
0.316
Vp-p
Note 22. LIN pin. These are the values when the output voltage of the OUT3 pin is 0dBFS (AVDD x
0.76).
Note 23. LIGN[3:0] bits = 0x0 (0dB), LOVOL3[3:0] bits = 0xF(0dB),
LO3SW1 bit =“0”, LO3SW2 bit = “0”, LO3SW3 bit = “1”
Note 24. LIGN[3:0] bits = 0xE (+18 dB), LOVOL3[3:0] bits = 0xF(0dB),
LO3SW1 bit =“0”, LO3SW2 bit = “0”, LO3SW3 bit = “1”
8.1.6. Line-out Amp Gain
(Ta= 25°C; AVDD=LVDD=TVDD1/2=3.3V; AVSS=DVSS=0V; LDOE pin =“H”)
Parameter
Min. Typ. Max. Unit
LOVOL1[3:0] LOVOL2[3:0] LOVOL3[3:0]
0x0
0x0
0x0
mute
dB
0x1
0x1
0x1
-29
-28
-27
dB
0x2
0x2
0x2
-27
-26
-25
dB
0x3
0x3
0x3
-25
-24
-23
dB
0x4
0x4
0x4
-23
-22
-21
dB
0x5
0x5
0x5
-21
-20
-19
dB
0x6
0x6
0x6
-19
-18
-17
dB
Line-out
Amp
0x7
0x7
0x7
-17
-16
-15
dB
0x8
0x8
0x8
-15
-14
-13
dB
0x9
0x9
0x9
-13
-12
-11
dB
0xA
0xA
0xA
-11
-10
-9
dB
0xB
0xB
0xB
-9
-8
-7
dB
0xC
0xC
0xC
-7
-6
-5
dB
0xD
0xD
0xD
-5
-4
-3
dB
0xE
0xE
0xE
-3
-2
-1
dB
0xF
0xF
0xF
-1
0
1
dB
016003563-E-02-PB
- 17 -
2016/09