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AK5558 Datasheet, PDF (9/70 Pages) Asahi Kasei Microsystems – 8-Channel Differential 32-bit ADC | |||
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[AK5558]
8. Analog Characteristics
(Ta= 25 ï°C; AVDD= 5.0 V; TVDD= 3.3 V, fs= 48 kHz, BICK= 64fs;
Signal Frequency= 1 kHz; 24-bit Data; Measurement frequency= 20 Hz-20 kHz at fs= 48 kHz,
40 Hz-40 kHz at fs= 96 kHz, 40 Hz-40 kHz at fs= 192 kHz, unless otherwise specified.)
Parameter
Min.
Typ.
Max.
Unit
Analog Input Characteristics:
Resolution
-
-
32
bit
Input Voltage
(Note 10) ï±2.7
ï±2.8
ï±2.9
Vpp
S/(N+D)
fs= 48 kHz
BW=20 kHz
ï1 dBFS
ï20 dBFS
ï60 dBFS
100
106
-
92
-
52
-
dB
-
dB
-
dB
fs= 96 kHz
BW= 40 kHz
ï1 dBFS
ï20 dBFS
ï60 dBFS
-
106
-
dB
-
89
-
dB
-
49
-
dB
fs= 192 kHz
BW= 40 kHz
ï1 dBFS
ï20 dBFS
ï60 dBFS
-
106
-
dB
-
89
-
dB
-
49
-
dB
Dynamic Range
Not-Sum. mode
110
115
8-to-4 mode
-
118
-
dB
-
dB
(ï60 dBFS with A-weighted)
8-to-2 mode
8-to-1 mode
-
121
-
dB
-
124
-
dB
S/N
(A-weighted)
Not-Sum. mode
110
115
8-to-4 mode
-
118
8-to-2 mode
-
121
8-to-1 mode
-
124
-
dB
-
dB
-
dB
-
dB
Input Resistance
These values will be doubled in DSD 64fs mode.
(Values in DSD128 or DSD256 modes are as shown
8.8
here)
10.4
12.0
kï
Interchannel Isolation
(AIN1âAIN2, AIN3âAIN4, AIN5âAIN6, AIN7âAIN8)
110
120
-
dB
Interchannel Gain Mismatch
-
0
0.5
dB
Power Supply Rejection
(Note 11)
-
60
-
dB
Power Supplies
Power Supply Current
Normal Operation (PDN pin = âHâ, LDOE pin = âHâ)
AVDD + VREFHm (m=1-4)
-
TVDD
(fs= 48 kHz)
-
TVDD
(fs= 96 kHz)
-
TVDD
(fs= 192 kHz)
-
Power Down mode (PDN pin = âLâ) (Note 12)
AVDD+TVDD
-
41
54
mA
17
22
mA
28
36
mA
25
32
mA
10
100
ïA
Note 10. This value is (AINnP)ï(AINnN) that the ADC output becomes full-scale (n=1-8).
Vin = 0.56 ï´ (VREFHmïVREFLm) [Vpp]. (m=1-4)
Note 11. PSRR is applied to AVDD, TVDD with 1 kHz, 20 mVpp sine wave. The VREFH1-4 are held to
the fixed voltage.
Note 12. All digital inputs are fixed to TVDD or TVSS.
015099850-E-00
-9-
2016/03
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