AK4955 Datasheet, PDF (10/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

[AK4955]
Parameter
min
typ
max
Unit
Mono Input: MIN pin, External Resistance mode
(PMBP bit =“1”, BPM1-0 bits = “01”, BPVCM bit = “0”, BPLVL3-0 bits = “0000”), External Input Resistance= 72kΩ
Maximum Input Voltage (Note 18)
-
-
1.54
Vpp
Gain (Note 19)
LVCM1-0 bits = “00”
-
−1.34
-
dB
MIN Æ LOUT ^{LVCM1-0 bits = “01”}
LVCM1-0 bits = “10”
−4.5
0
+4.5
dB
-
+2.50
-
dB
LVCM1-0 bits = “11”
MIN Æ SPP/SPN
-
+3.52
-
dB
ALC bit = “0”, SPKG1-0 bits = “00”
+1.6
+6.1
+10.6
dB
ALC bit = “0”, SPKG1-0 bits = “01”
-
+8.1
-
dB
ALC bit = “0”, SPKG1-0 bits = “10”
-
+10.1
-
dB
ALC bit = “0”, SPKG1-0 bits = “11”
-
+12.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “00”
-
+8.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “01”
-
+10.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “10”
-
+12.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “11”
-
+14.1
-
dB
Mono Input: MIN pin, Internal Resistance Mode
(PMBP bit =“1”, BPM1-0 bits = “00”, BPVCM bit = “0”, BPLVL3-0 bits = “0000”)
Input Resistance
50
72
94
kΩ
Maximum Input Voltage (Note 18)
-
-
1.54
Vpp
Gain
MIN Æ LOUT ^{LVCM1-0 bits = “00”}
LVCM1-0 bits = “01”
-
−1.34
-
dB
−1.0
0
+1.0
dB
LVCM1-0 bits = “10”
-
+2.50
-
dB
LVCM1-0 bits = “11”
MIN Æ SPP/SPN
-
+3.52
-
dB
ALC bit = “0”, SPKG1-0 bits = “00”
+4.1
+6.1
+8.1
dB
ALC bit = “0”, SPKG1-0 bits = “01”
-
+8.1
-
dB
ALC bit = “0”, SPKG1-0 bits = “10”
-
+10.1
-
dB
ALC bit = “0”, SPKG1-0 bits = “11”
-
+12.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “00”
-
+8.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “01”
-
+10.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “10”
-
+12.1
-
dB
ALC bit = “1”, SPKG1-0 bits = “11”
-
+14.1
-
dB
Note 18. The maximum value is AVDD Vpp when BPVCM bit = “1”. However, it must be set as the amplitude after
MIN-Amp is less than 0.1Vpp. (set by BPLVL3-0 bits)
Note 19. The gain is in inverse proportion to external input resistance.
MS1343-E-00
- 10 -
2011/12