AK4642VN Datasheet, PDF (10/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
Ξφϩάಛੑ
(Ta=25°C; AVDD, DVDD, HVDD=3.3V; AVSS=DVSS=HVSS=0V; fs=44.1kHz, BICK=64fs;
Signal Frequency=1kHz; 16bit Data; Measurement frequency=20Hz ∼ 20kHz; unless otherwise specified)
Parameter
min
typ
max
Units
MIC Amplifier: LIN1, RIN1, LIN2, RIN2 pins; MDIF1 = MDIF2 bits = “0” (Single-ended inputs)
Input
MGAIN1-0 bits = “00”
40
60
80
kΩ
Resistance _{MGAIN1-0 bits = “01”, “10”or “11”}
20
30
40
kΩ
MGAIN1-0 bits = “00”
-
0
-
dB
Gain
MGAIN1-0 bits = “01”
MGAIN1-0 bits = “10”
-
+20
-
dB
-
+26
-
dB
MGAIN1-0 bits = “11”
-
+32
-
dB
MIC Amplifier: IN1+, IN1−, IN2+, IN2− pins; MDIF1 = MDIF2 bits = “1” (Full-differential input)
Input Voltage (Note 12)
MGAIN1-0 bits = “01”
-
-
0.228
Vpp
MGAIN1-0 bits = “10”
-
-
0.114
Vpp
MGAIN1-0 bits = “11”
-
-
0.057
Vpp
MIC Power Supply: MPWR pin
Output Voltage (Note 13)
Load Resistance
Load Capacitance
2.22
2.47
2.72
V
0.5
-
-
kΩ
-
-
30
pF
ADC Analog Input Characteristics: LIN1/RIN1/LIN2/RIN2 pins → ADC → IVOL, IVOL=0dB, ALC=OFF
Resolution
Input Voltage (Note 14)
S/(N+D) (−1dBFS)
D-Range (−60dBFS, A-weighted)
S/N
(A-weighted)
Interchannel Isolation
Interchannel Gain Mismatch
(Note 15)
(Note 16)
(Note 15)
(Note 16)
(Note 15)
(Note 16)
(Note 15)
(Note 16)
(Note 15)
(Note 16)
(Note 15)
(Note 16)
-
0.168
1.68
71
-
76
-
76
-
75
-
-
-
-
0.198
1.98
83
88
86
95
86
95
90
100
0.1
0.1
16
0.228
2.28
-
-
-
-
-
-
-
-
0.8
0.8
Bits
Vpp
Vpp
dBFS
dBFS
dB
dB
dB
dB
dB
dB
dB
dB
Note 12. ϓϥεೖྗϐϯͱϚΠφεೖྗϐϯͷࠩ෼Ͱ͢ɻACΧοϓϦϯάίϯσϯαΛ֤ೖྗϐϯʹγϦʔ
ζʹ઀ଓͯ͠Լ͍͞ɻMGAIN1-0 bits = “00”ͷͱ͖ࠩಈೖྗ͸࢖༻͢ͰࢭېɻIN1+, IN1−, IN2+, IN2− pin
ͷ࠷େೖྗిѹ͸ͦΕͧΕAVDDʹൺྫ͠·͢ɻVin = |(IN1/2+) − (IN1/2−)| = 0.069 x AVDD
(max)@MGAIN1-0 bits = “01”, 0.035 x AVDD (max)@MGAIN1-0 bits = “10”, 0.017 x AVDD
(max)@MGAIN1-0 bits = “11”.
͜ͷిѹΛӽ͑Δ৴߸͕ೖྗ͞Εͨ৔߹ɺADCͷಈ࡞͸อূͰ͖·ͤΜɻ
Note 13. ग़ྗిѹ͸AVDDʹൺྫ͠·͢ɻVout = 0.75 x AVDD (typ)ɻ
Note 14. ೖྗిѹ͸AVDDʹൺྫ͠·͢ɻVin = 0.06 x AVDD (typ)@MGAIN1-0 bits = “01” (+20dB), Vin = 0.6 x
AVDD(typ)@MGAIN1-0 bits = “00” (0dB)
Note 15. MGAIN1-0 bits = “01” (+20dB)
Note 16. MGAIN1-0 bits = “00” (0dB)
MS0358-J-02
- 10 -
2005/04