AK4390 Datasheet, PDF (7/32 Pages) Asahi Kasei Microsystems – Ultra Low Latency 32-Bit ΔΣ DAC

[AK4390]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD=VDDL/R=DVDD=5.0V; VSS1 = VSS2 = VSS3 = VSS4 =0V; VREFHL/R=AVDD, VREFLL/R=
VSS1=VSS2=VSS3; Input data=24bit; R_L ≥ 1kΩ; BICK=64fs; Input Signal Frequency = 1kHz; Sampling Frequency =
44.1kHz; Measurement bandwidth = 20Hz ~ 20kHz; External Circuit: Figure 15; unless otherwise specified.)
Parameter
min
typ
max
Units
Resolution
24
Bits
Dynamic Characteristics (Note 5)
THD+N
fs=44.1kHz
BW=20kHz
0dBFS
−60dBFS
fs=96kHz
BW=40kHz
0dBFS
−60dBFS
fs=192kHz
BW=40kHz
0dBFS
−60dBFS
BW=80kHz −60dBFS
Dynamic Range (−60dBFS with A-weighted)
(Note 6)
114
S/N (A-weighted)
(Note 7)
114
Interchannel Isolation (1kHz)
110
−103
−57
−100
−54
−100
−54
−51
120
120
120
93
dB
-
dB
-
dB
-
dB
-
dB
-
dB
-
dB
dB
dB
dB
DC Accuracy
Interchannel Gain Mismatch
Gain Drift
Output Voltage
Load Capacitance
Load Resistance
0.15
0.3
dB
(Note 8)
20
-
ppm/°C
(Note 9)
±2.65
±2.8
±2.95
Vpp
25
pF
(Note 10)
1
kΩ
Power Supplies
Power Supply Current
Normal operation (PDN pin = “H”)
AVDD, VDDL/R
DVDD (fs ≤ 96kHz)
DVDD (fs = 192kHz)
Power down (PDN pin = “L”)
AVDD+DVDD
(Note 11)
60
90
mA
43
-
mA
46
70
mA
10
100
μA
Note 5. Measured by Audio Precision, System Two. Averaging mode. Refer to the evaluation board manual.
Note 6. By Figure 15. External LPF Circuit Example 2.101dB for 16-bit data and 118dB for 20-bit data.
Note 7. By Figure 15. External LPF Circuit Example 2. S/N does not depend on input word length.
Note 8. The voltage on (VREFHL/R − VREFLL/R) is held +5V externally.
Note 9. 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 10. For AC-load. 1.5kΩ for DC-Load
Note 11. In the power-down mode. PSN pin = DVDD, and all other digital input pins including clock pins
(MCLK, BICK and LRCK) are held VSS4.
Note 12. PSR is applied to AVDD, DVDD with 1kHz, 100mVpp. The VREFHL/R pin is held +5V.
MS1046-E-00
-7-
2009/01