AK5356 Datasheet, PDF (6/22 Pages) Asahi Kasei Microsystems – LOW POWER 20BIT ADC WITH MIC AMP & PGA

ASAHI KASEI
[AK5356]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD, DVDD=2.5V, MVDD=2.7V; AVSS, DVSS, MVSS=0V; fs=44.1kHz; Signal Frequency =1kHz;
Measurement Frequency=10Hz ∼ 20kHz; unless otherwise specified)
Parameter
min
typ
max
Units
Pre-Amp Characteristics:
Input Resistance
Positive Input Pin (Note 6)
Negative Input Pin (Note 7)
Gain Error (+13dB, +18dB, +28dB, +33dB)
50
100
200
kΩ
100
190
400
Ω
-1.5
0
+1.5
dB
Maximum Output Voltage(Gain=+13dB,+18dB,+28dB,+33dB)
(THD+N ≤ 0.1%) (Note 8)
-3
-1.5
dBV
S/(N+D) (Vout = -29.2dBV)
Gain = +33dB
54
60
dB
Gain = +28dB
−
65
−
dB
Gain = +18dB
−
74
−
dB
Gain = +13dB
−
78
−
dB
Output Noise Voltage
Gain = +33dB
-91
-86
dBV
(No Input, Rg = 600Ω, A-weighted)
Gain = +28dB
−
-96
−
dBV
Gain = +18dB
−
-105
−
dBV
Gain = +13dB
−
-109
−
dBV
Interchannel Gain Mismatch
(Gain = +13dB, +18dB, +28dB, +33dB)
0.5
dB
Interchannel Isolation
Gain = +33dB
75
90
dB
Load Resistance
Load Capacitance
Gain = +28dB, +18dB, +13dB
−
5
100
−
dB
kΩ
10
pF
Power Supply Rejection (Note 9)
Gain = +33dB
−
46
−
dB
Gain = +28dB
−
52
−
dB
Gain = +18dB
−
64
−
dB
Gain = +13dB
−
73
−
dB
MIC Power Characteristics:
Output Voltage (No Load) (Note 10)
2.05
2.16
2.27
V
Output Power Supply Current
1
mA
IPGA Characteristics:
Input Resistance (LIN, RIN, MICL, MICR pins)
6.3
9
15
kΩ
Step Size
+28dB ∼ -8dB
0.1
0.5
-8dB ∼ -16dB
0.1
1
-16dB ∼ -32dB
0.1
2
-32dB ∼ -40dB
-
2
-40dB ∼ -52dB
-
4
1
dB
2
dB
4
dB
-
dB
-
dB
ADC Characteristics: (Note 11)
Resolution
20
bits
Input Voltage (Note 12)
1.35
1.5
1.65
Vpp
S/(N+D) (-0.5dBFS Input)
IPGA = 0dB
74
84
IPGA= +28dB
−
70
dB
−
dB
D-Range (-60dBFS Input, A-weighted)
IPGA = 0dB
IPGA= +28dB
82
−
89
79
dB
−
dB
S/N (A-weighted)
IPGA = 0dB
82
89
IPGA= +28dB
−
79
dB
−
dB
Interchannel Isolation (Note 13)
IPGA = 0dB
90
100
IPGA= +28dB
−
75
dB
−
dB
Interchannel Gain Mismatch
IPGA = 0dB
IPGA= +28dB
−
0.5
dB
0.5
−
dB
MS0171-E-00
-6-
2002/08