MCP3421 查看數據表（PDF） - Microchip Technology
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MCP3421
Microchip Technology
MCP3421 Datasheet PDF : 42 Pages
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MCP3421
2.0 TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise indicated, TA = -40°C to +85°C, VDD = +5.0V, VSS = 0V, VIN+ = VIN- = VREF/2.
.005
.004
.003
.002
.001
PGA = 8
PGA = 2
PGA = 4
PGA = 1
.000
2.5
3
FIGURE 2-1:
(VDD).
3.5
4
4.5
5
5.5
VDD (V)
INL vs. Supply Voltage
10.0
7.5
TA = +25°C
VDD = 5V
5.0
PGA = 1
PGA = 2
PGA = 4
PGA = 8
2.5
0.0
-100 -75 -50 -25 0 25 50 75 100
Input Voltage (% of Full Scale)
FIGURE 2-4:
Voltage.
Output Noise vs. Input
0.003
PGA = 1
0.002
0.001
VDD = 5 V
VDD = 2.7V
0
-60 -40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
FIGURE 2-2:
INL vs. Temperature.
3.0
PGA = 1
2.0
PGA = 2
PGA = 4
1.0
PGA = 8
0.0
-1.0
-2.0
-3.0
-100 -75 -50 -25 0 25 50 75 100
Input Voltage (% of Full Scale)
FIGURE 2-5:
Total Error vs. Input Voltage.
20
VDD = 5V
15
10
PGA = 4
PGA = 8
PGA = 2
5
0
-5
PGA = 1
-10
-15
-20
-60 -40 -20 0 20 40 60 80 100 120 140
Temperature (°C)
FIGURE 2-3:
Temperature.
Offset Error vs.
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-60 -40 -20
PGA = 1
PGA = 2
VDD = 5.0V
PGA = 4
PGA = 8
0 20 40 60 80 100 120 140
Temperature (°C)
FIGURE 2-6:
Gain Error vs. Temperature.
© 2009 Microchip Technology Inc.
DS22003E-page 7
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