AK4673 Datasheet, PDF (12/107 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP and Touch Screen Controller

[AK4673]
Parameter
min
typ
Mono Input: MIN pin (AIN3 bit = “0”; External Input Resistance=20kΩ)
Maximum Input Voltage (Note 18)
-
1.98
Gain (Note 19)
MIN Æ LOUT/ROUT LOVL bit = “0”
−4.5
0
LOVL bit = “1”
-
+2
MIN Æ HPL/HPR
HPG bit = “0”
−24.5
−20
HPG bit = “1”
-
−16.4
Stereo Input: LIN2/RIN2/LIN4/RIN4 pins; LIN3/RIN3 pins (AIN3 bit = “1”)
Maximum Input Voltage (Note 20)
-
1.98
Gain
LIN/RIN Æ LOUT/ROUT LOVL bit = “0”
−4.5
0
LOVL bit = “1”
-
+2
LIN/RIN Æ HPL/HPR
HPG bit = “0”
−4.5
0
HPG bit = “1”
-
+3.6
Full-differential Mono Input: IN4+/− pins (L4DIF bit = “1”)
Maximum Input Voltage (Note 21)
-
3.96
Gain
IN4+/− Æ LOUT/ROUT
LOVL bit = “0”
−10.5
−6
(LODIF bit = “0”)
LOVL bit = “1”
-
−4
IN4+/− Æ LOP/LON
LOVL bit = “0”
−4.5
0
(LODIF bit = “1”) (Note 22) LOVL bit = “1”
-
+2
IN4+/− Æ HPL/HPR
HPG bit = “0”
−10.5
−6
HPG bit = “1”
-
−2.4
max
-
+4.5
-
−15.5
-
-
+4.5
-
+4.5
-
-
−1.5
-
+4.5
-
−1.5
-
Units
Vpp
dB
dB
dB
dB
Vpp
dB
dB
dB
dB
Vpp
dB
dB
dB
dB
dB
dB
Note 18. Maximum voltage is in proportion to both AVDD and external input resistance (Rin). Vin = 0.6 x AVDD x Rin
/ 20kΩ (typ).
Note 19. The gain is in inverse proportion to external input resistance.
Note 20. Maximum Input voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ).
Note 21. Maximum Input voltage is proportional to AVDD voltage. Vout = (IN4+) − (IN4−) = 1.2 x AVDD (typ). The
signals with same amplitude and inverted phase should be input to IN4+ and IN4− pins, respectively.
Note 22. Vout = (LOP) − (LON) at LODIF bit = “1”.
MS0670-E-00
- 12 -
2007/09