AK5385B Datasheet, PDF (8/24 Pages) Asahi Kasei Microsystems – 24Bit 192kHz ΔΣ ADC

ASAHI KASEI
[AK5385B]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD=5.0V, DVDD=3.3V; AVSS=BVSS=DVSS=0V; VREFL=VREFR=AVDD; fs=48kHz, 96kHz,
192kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement frequency=20Hz ∼ 20kHz at fs=48kHz,
40Hz ∼ 40kHz at fs=96kHz, 40Hz ∼ 40kHz at fs=192kHz; unless otherwise specified)
Parameter
min
typ
max
Units
Analog Input Characteristics:
Resolution
Input Voltage
(Note 4)
±2.7
S/(N+D)
−1dBFS (Note 5)
-
fs=48kHz
−1dBFS
92
BW=20kHz −20dBFS
-
−60dBFS
-
fs=96kHz
BW=40kHz
−1dBFS
−20dBFS
−60dBFS
90
-
-
fs=192kHz
BW=40kHz
−1dBFS
−20dBFS
−60dBFS
-
-
-
Dynamic Range
(−60dBFS with A-weighted)
107
S/N
(A-weighted)
107
Input Resistance
9
Interchannel Isolation
100
Interchannel Gain Mismatch
Power Supply Rejection
(Note 6)
24
Bits
±2.9
±3.1
Vpp
103
dB
100
dB
91
dB
51
dB
98
dB
86
dB
46
dB
98
dB
86
dB
46
dB
114
dB
114
dB
13
kΩ
120
dB
0.1
0.5
dB
50
-
dB
Power Supplies
Power Supply Current
Normal Operation (PDN pin = “H”)
AVDD
30
45
mA
DVDD
(fs=48kHz)
10
15
mA
DVDD
(fs=96kHz)
17
25
mA
DVDD
(fs=192kHz)
20
30
mA
Power down mode (PDN pin = “L”)
(Note 7)
AVDD+DVDD
10
100
µA
Note 4. This value is (LIN+)−(LIN−) and (RIN+)−(RIN−). Input voltage is proportional to VREF voltage.
Vin = 0.58 x VREF (Vpp).
Note 5. 100µF capacitors are connected between the VREFL/R pins and AVSS.
Note 6. PSR is applied to AVDD and DVDD with 1kHz, 20mVpp. The VREFL and VREFR pins held a constant voltage.
Note 7. All digital input pins are held DVDD or DVSS.
MS0406-E-00
-8-
2005/08