ASAHI KASEI
[AK4620B]
Note 6. Full scale (0dB) of the input voltage at PGA=0dB.
This voltage is proportional to VREF. Vin(typ) = 3.07Vpp x VREF/5.
Note 7. These values become smaller when a gain of IPGA is large.
IPGA=0dB; typ. 5.1kΩ, IPGA=+18dB; typ. 1.18kΩ
Note 8. PSR is applied to VA, VD, VT with 1kHz, 50mVpp. VREF pin is held a constant voltage.
Note 9. Full scale (0dB) of the input voltage at 0dB. This voltage is proportional to VREF.
Vin (typ) =
±2.82Vpp
x VREF/5.
ANALOG CHARACTERISTICS (DAC)
(Ta=25°C; VA=5V, VD=3.3V, VT=5V; AGND=DGND=0V; VREF=VA; fs=44.1kHz; Signal Frequency =1kHz; 24bit
Data; Measurement frequency=20Hz
∼
20kHz at fs=44.1kHz, 40Hz
∼
40kHz at fs=96kHz, 40Hz
∼
40kHz at fs=192kHz;
unless otherwise specified)
DAC Analog Output Characteristics:
Parameter
min
typ
max
Units
Resolution
24
Bits
Dynamic Characteristics
0dBFS
S/(N+D)
87
97
dB
fs=44.1kHz
BW=20kHz
-
52
dB
−60dBFS
0dBFS
-
97
dB
fs=96kHz
BW=40kHz
-
49
dB
−60dBFS
0dBFS
-
97
dB
fs=192kHz
BW=40kHz
-
49
dB
−60dBFS
Dynamic Range (−60dBFS with A-weighted) (Note 10, Note 11)
-
115
dB
S/N
(A-weighted) (Note 11, Note 12)
107
115
dB
Interchannel Isolation (1kHz)
90
110
dB
DC Accuracy
Interchannel Gain Mismatch
0.15
0.3
dB
Gain Drift
(Note 13)
20
-
ppm/°C
Output Voltage
(Note 14)
±2.6
±2.8
±3.0
Vpp
Load Capacitance
25
pF
Load Resistance
(Note 15)
3
kΩ
Note 10. 100dB at 16bit data and 114dB at 20bit data.
Note 11. By Figure 19. External LPF Circuit Example 2 for PCM.
Note 12. S/N does not depend on input bit length.
Note 13. The voltage on VREF is held +5V externally.
Note 14. Full-scale voltage(0dB). Output voltage scales with the voltage of VREF.
AOUT (typ.@0dB) = (AOUT+) - (AOUT-) = 5.6Vpp x VREF/5.
Note 15. For AC-load.
Parameter
Power Supplies
Power Supply Current
Normal Operation (PDN pin = “H”)
VA: ADC Single-ended Mode
ADC Differential Mode
VD+VT (fs=44.1kHz)
(fs=96kHz)
(fs=192kHz)
Power-down mode (PDN pin = “L”)
(Note 16)
VA
VD+VT
Note 16. All digital input pins are held VT or DGND.
MS0401-E-00
-8-
min
typ
max
Units
60
55
11
21
27
10
10
90
83
-
-
41
100
100
mA
mA
mA
mA
mA
µA
µA
2005/07
AKM [ ASAHI KASEI MICROSYSTEMS ]
