AK9223 Datasheet, PDF (5/16 Pages) Asahi Kasei Microsystems – Dual 1-Bit, 10MHz, 2nd-Order, Modulat

[AK9223]
Analog Characteristics
(Ta = -40C to 105C; AVDD=5V, DVDD=3V, AIN+=0.2V to 4.8V, AIN-=2.5V, REFI=REFO=2.5V
(internal), CLKI= 20MHz, and 16bit Sinc³ filter with OSR =256; unless otherwise specified)
Parameter
Min.
Typ.
Max.
Unit
Resolution
16
-
-
Bits
Integral Nonlinearity (INL) VIN = ±2.3Vpp
Error
(Note 5) _{VIN = ±2.0Vpp}
-8
±3.8
-4
±1.8
+8
LSB
+4
LSB
Integral Nonlinearity Match
-
1
4
LSB
Differential Nonlinearity (DNL) Error
-1
-
+1
LSB
Offset Error
REFI=2.5V
-3
±1.5
+3
mV
Offset Error Match
-
0.2
2
mV
Offset Error Drift
(Note 6)
-8
1
+8
V /C
Gain Error
(Note 7) Referenced REFI = 2.5V -0.5
±0.02
+0.5 %FSR
Gain Error Match
-
0.1
0.5
%FSR
Gain Error Drift
(Note 8)
-
±1.3
-
ppm/C
PSRR
-
82
-
dB
Analog Input
Full scale Differential Input (AIN+)-(AIN-)
Voltage Range:
AIN- =2.5V
-REFI
-
+REFI
V
Specified Differential Input (AIN+)-(AIN-)
-0.92 x
-
+0.92 x
V
Voltage Range
AIN- =2.5V
REFI
REFI
Absolute Input Voltage Range
0
-
AVDD
V
Input Capacitance
AIN to VSS
-
1
-
pF
Input Leakage Current
Clock turned off (Note 9)
-1
-
+1
A
Differential Input
Resistance
80
100
120
k
Differential Input
Capacitance
-
2.5
-
pF
CMRR
at dc
-
108
-
dB
AIN- =2.5V
Vin = ±1.25Vpp at 40kHz
-
117
-
dB
Sampling Dynamics
Internal Clock Frequency SEL=1, -40C to +105C
9
10
11
MHz
External Clock Frequency SEL=0
(Note 10)
1
20
24
MHz
Dynamic Characteristics
THD
Vin = ±2.3Vpp at 5kHz
-
-85
-80
dB
SFDR
Vin = ±2.3Vpp at 5kHz
82
86
-
dB
S/N
Vin = ±2.3Vpp at 5kHz
88
92
-
dB
Vin = ±2.0Vpp at 5kHz
87
91
-
dB
S/(N+D)
Vin = ±2.3Vpp at 5kHz
80
84
-
dB
Channel to Channel Isolation Vin = ±2.3Vpp at 5kHz
-
100
-
dB
Note 5. Integral nonlinearity is defined as the maximum deviation of the line through the end points of the
specified input range.
Note 6. This is the maximum variation referring the offset of Ta = 25C when the temperature range is
from -40 to 105C.
Note 7. Referring the REFI pin (It does not include internal VREF variation)
Note 8. This value does not include temperature drift of the internal VREF.
Note 9. Outgoing current from the AK9223 is defined as “-” polarity.
Note 10. Recommended input range of the external clock is from 16MHz to 24MHz. The range of
1MHz~16MHz and 24MHz~32MHz can also be available with reduced accuracy.
014010283-E-01
5
2015/01