AK5554 Datasheet, PDF (9/68 Pages) Asahi Kasei Microsystems – 4-Channel Differential 32-bit ADC

[AK5554]
8. Analog Characteristics
(Ta= 25 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) 2.7
2.8
2.9 Vpp
S/(N+D)
fs= 48 kHz
BW=20 kHz
1 dBFS
20 dBFS
60 dBFS
100
106
-
dB
-
92
-
dB
-
52
-
dB
fs= 96 kHz
BW= 40 kHz
1 dBFS
20 dBFS
60 dBFS
-
106
-
dB
-
89
-
dB
-
49
-
dB
fs= 192 kHz
BW= 40 kHz
1 dBFS
20 dBFS
60 dBFS
-
106
-
dB
-
89
-
dB
-
49
-
dB
Dynamic Range
(60dBFS with A-weighted)
Not Sum. mode
4-to-2 mode
4-to-1 mode
110
115
-
dB
-
118
-
dB
-
121
-
dB
S/N
(A-weighted)
Not Sum. mode
4-to-2 mode
4-to-1 mode
110
115
-
dB
-
118
-
dB
-
121
-
dB
Input Resistance
These values will be doubled in DSD 64fs mode.
8.8
10.4
12.0
k
(Values in DSD128 or DSD256 modes are as shown here)
Interchannel Isolation
(AIN1AIN2, AIN3AIN4)
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+VREFH1/2
-
22
29
mA
TVDD
(fs= 48 kHz)
-
9
12
mA
TVDD
(fs= 96 kHz)
-
16
21
mA
TVDD
(fs= 192 kHz)
-
15
20
mA
Power down mode (PDN pin = “L”)
(Note 12)
AVDD+TVDD
-
10
100
A
Note 10. This value is (AINnP)(AINnN) that the ADC output becomes full-scale (n=1-4).
Vin = 0.56  (VREFHmVREFLm) [Vpp]. (m=1-2)
Note 11. PSRR is applied to AVDD, TVDD with 1 kHz, 20 mVpp sine wave. The VREFH1-2 are held to
the fixed voltage.
Note 12. All digital inputs are fixed to TVDD or TVSS.
015099864-E-00
-9-
2016/03