AK9231 Datasheet, PDF (6/11 Pages) Asahi Kasei Microsystems – Dual 12-Bit 1MSPS SAR A/D Converter

[AK9231]
7. Analog Characteristics
(Ta = -40 ~ 105ºC; VDD= 2.35 ~ 5.25V; fs= 1MHz; unless otherwise specified)
Parameter
Min.
Typ.
Resolution
12
No Missing Codes
12
Integral Nonlinearity (INL) Error
-1.25
±0.65
Differential Nonlinearity (DNL) Error
-1
+0.4/-0.65
Offset Error
VDD= 2.35 ~ 3.6V
VDD= 4.75 ~ 5.25V
-2.5
±0.5
-2
±0.5
Offset Error Drift
±7
Offset Error match: ADC to ADC
-2
±0.1
Gain Error
-1.75
±0.5
Gain Error Drift
±0.4
Gain Error match: ADC to ADC
-1.75
±0.5
Sampling Dynamics
Throughput Rate
25
Acquisition time
325
tA match
50
Aperture Delay
5
Dynamic Characteristics (fin= 0.5dBFS)
THD
fI= 100kHz
-84
S/H
VDD=2.35 ~ 3.6V, fI= 100kHz
69
VDD=4.75 ~ 5.25V, fI= 100kHz
70
71.25
72.25
S/(N+D)
VDD=2.35 ~ 3.6V, fI= 100kHz
69
VDD=4.75 ~ 5.25V, fI= 100kHz
70
71.25
72.25
SFDR
sine wave 100kHz
85.5
Channel to Channel Isolation
-88
Full power bandwidth
At -3dB
12
Analog Input
Full scale input:
0
Absolute input voltage range
-0.2
Input Capacitance
27
Input leakage Current
-0.3/0.5
Power Supplies
Power Supply Current:
Normal Operation (fs=1MSPS) VDD= 5V
10
Normal Operation (fs=1M SPS) VDD=3V
7.2
Static state VDD= 5V
4.4
Static state VDD= 3V
4.2
Power-Down State
0.1
Invalid conversions after power up or reset
Max.
1.25
1
2.5
2
2
1.75
1.75
1000
200
VDD
VDD+0.2
12.3
9.0
5.8
5.5
10
1
Unit
bit
bit
LSB
LSB
LSB
LSB
µV/ºC
LSB
LSB
‘ppm/ºC
LSB
kSPS
nsec
psec
nsec
dB
dB
dB
dB
dB
dB
dB
MHz
V
V
pF
µA
mA
mA
mA
mA
µA
014010771-E-00
-6-
2014/12