MCP3021
Note:
Unless otherwise indicated, V
DD
= 5V, V
SS
= 0V, I
2
C Fast Mode Timing (SCL = 400 kHz), Continuous Conversion
Mode (f
SAMP
= 22.3 ksps), T
A
= +25°C.
10
12
9.95
11.95
9.90
11.9
9.85
11.85
ENOB (rms)
9.80
11.8
9.75
11.75
9.70
11.7
9.65
11.65
9.60
11.6
9.55
11.55
9.50
11.5
2.5
3
3.5
4
V
DD
(V)
4.5
5
5.5
ENOB (rms)
9.5
11.5
9.0
11
8.5
10.5
8.0
10
7.7
9.5
7.0
9
1
Input Frequency (kHz)
10
V
DD
= 2.7V
V
DD
= 5V
10
12
FIGURE 2-25:
96
84
84
72
ENOB vs. V
DD
.
V
DD
= 5 V
FIGURE 2-28:
10
-10
Amplitude (dB)
-30
-50
-70
-90
-110
-130
ENOB vs. Input Frequency.
72
60
SFDR (dB)
48
60
36
48
24
36
12
24
0
12
1
V
DD
= 2.7V
10
Input Frequency (kHz)
0
500
1000
1500
2000
2500
Frequency (Hz)
FIGURE 2-26:
SFDR vs. Input Frequency.
FIGURE 2-29:
Spectrum Using I
2
C
Standard Mode (Representative Part, 1 kHz
Input Frequency).
250
200
150
100
50
0
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
0
2000
4000
6000
8000
10000
Frequency (Hz)
Amplitude (dB)
I
DD
(µA)
2.5
3
3.5
4
V
DD
(V)
4.5
5
5.5
FIGURE 2-27:
Spectrum Using I
2
C Fast
Mode (Representative Part, 1 kHz Input
Frequency).
FIGURE 2-30:
I
DD
(Conversion) vs. V
DD
.
2003 Microchip Technology Inc.
DS21805A-page 9
MICROCHIP [ MICROCHIP TECHNOLOGY ]
