ASAHI KASEI
[AK4551]
ANALOG CHARACTERISTICS
(Ta=25°C; VDD=2.5V; fs=44.1kHz; Signal Frequency=1kHz; SCLK=64fs; Measurement frequency=10Hz
∼
20kHz;
unless otherwise specified)
Parameter
min
typ
max
Units
ADC Analog Input Characteristics:
Analog Source Impedance=470Ω (
Note 2
)
Resolution
20
Bits
S/(N+D)
(-0.5dB Input)
72
82
dB
D-Range
(-60dB Input, A-weighted)
82
89
dB
S/N
(A-weighted)
82
89
dB
Interchannel Isolation
80
95
dB
Interchannel Gain Mismatch
0.2
0.5
dB
Input Voltage
(
Note 3
)
1.35
1.50
1.65
Vpp
Input Resistance
50
100
kΩ
Power Supply Rejection
(
Note 4
)
35
dB
DAC Analog Output Characteristics:
Resolution
20
Bits
S/(N+D)
75
85
dB
D-Range
(-60dB Output, A-weighted)
86
92
dB
S/N
(A-weighted)
86
92
dB
Interchannel Isolation
80
95
dB
Interchannel Gain Mismatch
0.2
0.5
dB
Output Voltage
(
Note 3
)
1.35
1.50
1.65
Vpp
Load Resistance
10
kΩ
Load Capacitance
30
pF
Power Supply Rejection
(
Note 4
)
50
dB
Power Supplies
Power Supply Current
AD+DA
AD
DA
Power down (
Note 5
)
Power Consumption
PWAD = “H”, PWDA =
“H” PWAD = “H”, PWDA =
“L” PWAD = “L”, PWDA = “H”
PWAD = “L”, PWDA = “L”
10
5.6
5.6
10
15
8.4
8.4
50
mA
mA
mA
uA
mW
37.5
25
PWAD = “H”, PWDA = “H”
AD+DA
mW
21
14
AD
PWAD = “H”, PWDA = “L”
mW
21
14
DA
PWAD = “L”, PWDA = “H”
uW
125
25
PWAD = “L”, PWDA = “L”
Power down (
Note 5
)
Note 2. The offset of ADC is removed by internal HPF.
Note 3. Input /Output of ADC and DAC scales with VDD voltage. 0.6 X VDD (typ).
Note 4. PSR is applied to VDD with 1kHz, 50mV.
Note 5. In case of power-down mode, all digital input including clocks pins (MCLK, SCLK and LRCK) are held VDD or
VSS. But PWAD and PWDA pins are held VSS.
MS0029-E-00
-4-
2000/5
AKM [ ASAHI KASEI MICROSYSTEMS ]
