AS1526/AS1527
Data Sheet
- Ty p i c a l
Operating Characteristics
7 Typical Operating Characteristics
V
DD
= 3.0V, V
REF
= 2.5V, f
SCLK
= 2.1MHz, C
LOAD
= 50pF, T
AMB
= +25ºC (unless otherwise specified).
Figure 5. Integral Nonlinearity vs. Digital Output Code
Figure 6. Differential Nonlinearity vs. Digital Output Code
1
0.8
0.6
1
0.8
0.6
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
256
512
768
1024
DNL (LSB)
.
0.4
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
256
512
768
1024
INL (LSB)
.
Digital Output Code
Figure 7. FFT @ 1kHz
0
-20
-40
Fsample = 80.8ksps
N
FFT
= 16384
Digital Output Code
Figure 8. FFT @ 10kHz
0
-20
-40
Fsample = 80.8ksps
N
FFT
= 16384
FFT (dBC)
.
-60
-80
-100
-120
-140
-160
0
10
20
30
40
FFT (dBC)
.
-60
-80
-100
-120
-140
-160
0
10
20
30
40
Input Signal Frequency (kHz)
Figure 9. ENOB vs. V
REF
9.95
9.92
Input Signal Frequency (kHz)
Figure 10. ENOB vs. Input Signal Frequency
9.95
9.94
ENOB (Bit)
.
9.86
9.83
9.8
9.77
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
ENOB (Bit)
.
9.89
9.93
9.92
9.91
9.9
9.89
0
10
20
30
40
Reference Voltage (V)
Frequency (kHz)
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