AK5538VN Datasheet, PDF (9/70 Pages) Asahi Kasei Microsystems – 8-Channel Differential 32-bit ADC

[AK5538]
8. Analog Characteristics
(Ta= 25 C; AVDD= 3.3 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) 1.75
1.85
1.95
Vpp
S/(N+D)
fs= 48 kHz
BW=20 kHz
1 dBFS
20 dBFS
60 dBFS
97
103
-
dB
-
89
-
dB
-
49
-
dB
fs= 96 kHz
BW= 40 kHz
1 dBFS
20 dBFS
60 dBFS
-
103
-
dB
-
86
-
dB
-
46
-
dB
fs= 192 kHz
BW= 40 kHz
1 dBFS
20 dBFS
60 dBFS
-
103
-
dB
-
86
-
dB
-
46
-
dB
Dynamic Range
Not-Sum. mode
106
111
8-to-4 mode
-
114
-
dB
-
dB
(60 dBFS with A-weighted)
8-to-2 mode
8-to-1 mode
-
117
-
dB
-
120
-
dB
S/N
(A-weighted)
Not-Sum. mode
106
111
8-to-4 mode
-
114
8-to-2 mode
-
117
8-to-1 mode
-
120
-
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
k
Interchannel Isolation
(AIN1↔AIN2, AIN3↔AIN4, AIN5↔AIN6, AIN7↔AIN8)
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 = “H”, LDOE pin = “H”)
AVDD + VREFHm (m=1-4)
-
TVDD
(fs= 48 kHz)
-
TVDD
(fs= 96 kHz)
-
TVDD
(fs= 192 kHz)
-
Power Down mode (PDN pin = “L”) (Note 12)
AVDD+TVDD
-
38
50
mA
17
22
mA
28
36
mA
25
32
mA
10
100
A
Note 10. This value is (AINnP)(AINnN) that the ADC output becomes full-scale (n=1-8).
Vin = 0.56  (VREFHmVREFLm) [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.
015099878-E-00
-9-
2016/03