AK4490EN Datasheet, PDF (10/68 Pages) Asahi Kasei Microsystems – Premium 32-Bit 2ch DAC

[AK4490EN]
■ Analog Characteristics
8. Electrical Characteristics
(Ta=25C; AVDD=DVDD=3.3V; TVDD=1.8V; AVSS=DVSS=VSSL/R=0V; VREFHL/R=VDDL/R=5V,
VREFLL/R= VSSL/R=0V; Input data = 24bit; R_L  1k; BICK=64fs; Signal Frequency = 1kHz; Sampling
Frequency = 44.1kHz; Measurement bandwidth = 20Hz ~ 20kHz; External Circuit: Figure 41; unless
otherwise specified.)
Parameter
Min.
Typ.
Max.
Unit
Resolution
-
-
32
Bits
Dynamic Characteristics
(Note 7)
THD+N
fs=44.1kHz
BW=20kHz
fs=96kHz
BW=40kHz
0dBFS
60dBFS
0dBFS
60dBFS
-
-112
-105
dB
-
-57
-49
dB
-
-109
-100
dB
-
-54
-44
dB
fs=192kHz
BW=40kHz
BW=80kHz
0dBFS
60dBFS
60dBFS
-106
-100
dB
-54
-44
dB
-51
-41
dB
Dynamic Range (60dBFS with A-weighted) (Note 8) 115
120
-
dB
S/N (A-weighted)
(Note 9) 115
120
-
dB
S/N (Mono mode, A-weighted)
Interchannel Isolation (1kHz)
118
123
-
dB
110
120
-
dB
DC Accuracy
Interchannel Gain Mismatch
-
0.15
0.3
dB
Gain Drift
Output Voltage
(Note 10)
-
(Note 11) 2.65
-
20 ppm/C
2.8
2.95 Vpp
Load Capacitance
-
-
25
pF
Load Resistance
(Note 12)
1
-
-
k
Power Supplies
Power Supply Current
Normal operation (PDN pin = “H”)
VDDL/R
AVDD
TVDD
DVDD (fs= 44.1kHz)
DVDD (fs= 96kHz)
DVDD (fs = 192kHz)
22
32
mA
0.6
1.2
mA
-
0.5
1
mA
-
10
14
mA
-
15
20
mA
-
17
23
mA
Power down (PDN pin = “L”)
(Note 13)
AVDD+VDDL/R+DVDD+TVDD
-
0
10
A
Note 7. Measured by Audio Precision, System Two. Averaging mode. Refer to the evaluation board
manual.
Note 8. Figure 41 External LPF Circuit Example 2. 101dB for 16-bit data and 118dB for 20-bit data.
Note 9. Figure 41 External LPF Circuit Example 2. S/N does not depend on input data size.
Note 10. The voltage on (VREFH  VREFL) is held +5V externally.
Note 11. Full-scale voltage(0dB). Output voltage scales with the voltage of (VREFHL/R  VREFLL/R).
AOUT (typ.@0dB) = (AOUT+)  (AOUT) = 2.8Vpp  (VREFHL/R  VREFLL/R)/5.
Note 12. Regarding Load Resistance, AC load is 1k (min) with a DC cut capacitor (Figure 41). DC load
is 1.5k ohm (min) without a DC cut capacitor (Figure 40). The load resistance value is with
respect to ground. Analog characteristics are sensitive to capacitive load that is connected to the
output pin. Therefore the capacitive load must be minimized.
Note 13. In the power down mode. The PSN pin = DVDD, and all other digital input pins including clock
pins (MCLK, BICK and LRCK) are held DVSS.
015013666-E-01
- 10 -
2015/12