MCP3221_06 Datasheet, PDF (7/28 Pages) Microchip Technology – Low Power 12-Bit A/D Converter With I2C™ Interface

MCP3221
Note: Unless otherwise indicated, V_DD = 5V, V_SS = 0V, I²C Fast Mode Timing (SCL = 400 kHz), Continuous Conversion
Mode (f_SAMP = 22.3 ksps), T_A = +25°C.
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
1024
2048
Digital Code
3072
4096
FIGURE 2-13:
DNL vs. Code
(Representative Part).
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-50 -25
Positive DNL
Negative DNL
0 25 50 75
Temperature (°C)
100 125
FIGURE 2-14:
DNL vs. Temperature.
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
Fast Mode
(f_SCL= 100 kHz)
Standard Mode
(f_SCL= 400 kHz)
-0.7
-0.8
-0.9
-1
2.5
3
3.5
4
4.5
5
5.5
V_DD (V)
FIGURE 2-15:
Gain Error vs. V_DD.
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
1024
2048
Digital Code
3072
4096
FIGURE 2-16:
DNL vs. Code
(Representative Part, V_DD = 2.7V).
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-50 -25
Positive DNL
Negative DNL
0 25 50 75
Temperature (°C)
100 125
FIGURE 2-17:
(V_DD = 2.7V).
DNL vs. Temperature
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5
3
FIGURE 2-18:
f_SCL = 100 kHz & 400 kHz
3.5 4 4.5 5 5.5
V_DD (V)
Offset Error vs. V_DD.
© 2006 Microchip Technology Inc.
DS21732C-page 7