AK5351 Datasheet, PDF (6/19 Pages) Asahi Kasei Microsystems – Enhanced Dual bit 20bit ADC

ASAHI KASEI
[AK5351]
ANALOG CHARACTERISTICS
(Ta=25°C; VA,VD,VB=5.0V; fs=48kHz; 20bit; Input signal frequency=1kHz,
Measurement Bandwidth=10Hz~20kHz; unless otherwise specified.)
Parameter
min
typ
max
Units
Resolution
20
Bits
Analog Input Characteristics (Analog source impedance: 330Ω)
S/(N+D)
(Note 4 )
88
97
dB
Dynamic Range (A-weighted) (Note 5 )
97
103
dB
S/N
(A-weighted) (Note 6 )
97
103
dB
Interchannel Isolation
(f=1kHz)
100
120
dB
Interchannel Gain Mismatch
0.1
0.3
dB
Gain drift
±200
ppm/°C
Input Voltage Range
±1.97
±2.10
±2.23
Vp-p
Input Impedance
30
50
kΩ
Power Supplies
Power Supply Current (Note 7 )
Normal Operation (PD="H")
VA+VB
15
25
mA
VD
6
9
mA
Power-Down mode (PD="L")
VA+VB
20
uA
VD
10
uA
Power Consumption (Note 7 )
Normal Operation
105
170
mW
Power-Down mode
150
uW
Power Supply Rejection Ratio
50
dB
Note 4 : The ratio of the rms value of the signal to the sum of all other spectral components up to 20kHz
except for the signal (included harmonic component, excluded DC component, analog input
signal is -0.5dB). Inversed of THD+N.
Note 5 : S/(N+D) with an input signal of 60dB below full-scale.
Note 6 : When using only 20kHzLPF, S/N and DR are 99dB(typ.). When using CCIR-ARM filter,
S/N is 99dB(typ.)
Note 7 : Almost no current is supplied from VB pin.
0166-E-00
-6-
1997/4