ak4642e AKM Semiconductor, Inc., ak4642e Datasheet - Page 12

• Manufacturer Part Number: ak4642e
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Parameter
Speaker-Amp Characteristics: DAC → SPP/SPN pins, ALC=OFF, IVOL=0dB, DVOL=0dB, R
Output Voltage (Note 21)
S/(N+D)
S/N
Load Resistance
Load Capacitance
Speaker-Amp Characteristics: DAC → SPP/SPN pins, ALC=OFF, IVOL=0dB, DVOL=0dB, C
Output Voltage
S/(N+D)
S/N
Load Resistance (Note 23)
Load Capacitance (Note 23)
Mono Input: MIN pin (External Input Resistance=20kΩ)
Maximum Input Voltage (Note 24)
Gain (Note 25)
Note 21. Output voltage is proportional to AVDD voltage.
Note 22. In case of measuring at SPP and SPN pins.
Note 23. Load impedance is total impedance of series resistance and piezo speaker impedance at 1kHz in Figure 33. Load
Note 24. Maximum voltage is in proportion to both AVDD and external input resistance (Rin). Vin = 0.6 x AVDD x Rin
Note 25. The gain is in inverse proportion to external input resistance.
MS0420-E-00
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
SPKG1-0 bits = “01”, −0.5dBFS (Po=240mW)
SPKG1-0 bits = “10”, −2.5dBFS (Po=400mW)
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
SPKG1-0 bits = “01”, −0.5dBFS (Po=240mW)
SPKG1-0 bits = “10”, −2.5dBFS (Po=400mW)
MIN
MIN
MIN
(Note 21) SPKG1-0 bits = “11”, 0dBFS
(Note 22) SPKG1-0 bits = “11”, 0dBFS
Vout = 0.94 x AVDD(typ)@SPKG1-0 bits = “00”, 1.19 x AVDD(typ)@SPKG1-0 bits = “01”, 2.05 x
AVDD(typ)@SPKG1-0 bits = “10”, 2.58 x AVDD(typ)@SPKG1-0 bits = “11” at Full-differential output.
capacitance is capacitance of piezo speaker. When piezo speaker is used, 10Ω or more series resistors should be
connected at both SPP and SPN pins, respectively.
/ 20kΩ (typ).
LOUT/ROUT
HPL/HPR
SPP/SPN
ALC bit = “0”, SPKG1-0 bits = “00”
ALC bit = “0”, SPKG1-0 bits = “01”
ALC bit = “0”, SPKG1-0 bits = “10”
ALC bit = “0”, SPKG1-0 bits = “11”
ALC bit = “1”, SPKG1-0 bits = “00”
ALC bit = “1”, SPKG1-0 bits = “01”
ALC bit = “1”, SPKG1-0 bits = “10”
ALC bit = “1”, SPKG1-0 bits = “11”
(A-weighted)
SPKG1-0 bits = “10”, 0dBFS
SPKG1-0 bits = “10”, 0dBFS
(A-weighted)
HVDD=3.3V
LOVL bit = “0”
LOVL bit = “1”
HPG bit = “0”
HPG bit = “1”
R
L
=50Ω, BTL, HVDD=5.0V
- 12 -
−24.5
−0.57
3.13
6.80
−4.5
min
20
80
40
80
50
8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+10.65
+12.65
+12.65
+14.65
−16.4
+4.43
+6.43
+6.43
+8.43
3.11
3.92
1.79
6.75
8.50
1.98
−20
typ
+2
60
50
20
90
60
50
90
0
-
-
-
-
L
−15.5
+8.93
10.20
=3µF, R
+4.5
max
L
4.71
=8Ω, BTL,
30
3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
serial
[AK4642EN]
=10Ω x 2,
2005/09
Units
Vrms
Vpp
Vpp
Vpp
Vpp
Vpp
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
pF
µF
Ω
Ω