
ASAHI KASEI
[AK4620A]
MS0368-E-00
2004/12
- 8 -
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. 5.1k
, IPGA=+18dB; typ. 1.18k
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
Resolution
Dynamic Characteristics
fs=44.1kHz
BW=20kHz
60dBFS
fs=96kHz
BW=40kHz
60dBFS
fs=192kHz
BW=40kHz
60dBFS
Dynamic Range (
60dBFS with A-weighted) (Note 10, Note 11)
S/N (A-weighted) (Note 11, Note 12)
Interchannel Isolation (1kHz)
DC Accuracy
Interchannel Gain Mismatch
Gain Drift (Note 13)
Output Voltage (Note 14)
Load Capacitance
Load Resistance (Note 15)
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.
min
typ
max
24
Units
Bits
0dBFS
90
-
-
-
-
-
-
107
90
100
52
97
49
97
49
115
115
110
dB
dB
dB
dB
dB
dB
dB
dB
dB
0dBFS
S/(N+D)
0dBFS
0.15
20
±
2.8
0.3
-
±
3.0
25
dB
ppm/
°
C
Vpp
pF
k
±
2.6
3
min
typ
max
Units
60
51
10
18
22
10
10
90
77
-
-
33
100
100
mA
mA
mA
mA
mA
μ
A
μ
A