MCP3905/06
Note: Unless otherwise specified, DVDD, AVDD = 5V; AGND, DGND = 0V; VREF = Internal, HPF = 1 (AC mode),
MCLK = 3.58 MHz.
0.5
0.4
0.3
0.2
0.1
0
4000
3500
3000
2500
2000
1500
1000
500
16384 Samples
Mean = - 1.28 mV
Std. dev = - 18.1 µV
PF = 0.5
-0.1
PF = 1.0
-0.2
-0.3
-0.4
-0.5
0
45
50
55
60
65
70
75
Frequency (Hz)
Bin (mV)
FIGURE 2-11:
Measurement Error vs.
FIGURE 2-14:
Channel 0 Offset Error
Input Frequency.
(DC Mode, HPF Off), G = 16.
3000
0.3
0.2
16384 Samples
Mean = -1.57 mV
Std. Dev = 52.5 µV
2500
2000
1500
1000
500
0.1
0
VDD=5.0V
-0.1
-0.2
-0.3
-0.4
-0.5
VDD=4.5V
VDD=4.75V
VDD=5.25V
VDD=5.5V
0
0.0001
0.0010
0.0100
0.1000
1.0000
Channel 0 Offset (mV)
CH0 Vp-p Amplitude (V)
FIGURE 2-12:
Channel 0 Offset Error
FIGURE 2-15:
Measurement Error vs. VDD
(DC Mode, HPF off), G = 1.
(G = 16).
1200
0.3
0.25
0.2
16384 Samples
Mean = -1.64 mV
Std. Dev = 17.4 µV
1000
800
600
400
200
0
VDD=4.75V
VDD=4.5V
0.15
0.1
0.05
VDD=5.0V
0
-0.05
-0.1
VDD=5.25V
VDD=5.5V
-0.15
0.0001
0.0010
0.0100
0.1000
1.0000
CH0 Vp-p Amplitude (V)
Channel 0 Offset (mV)
FIGURE 2-13:
Channel 0 Offset Error
FIGURE 2-16:
Measurement Error vs. VDD
,
(DC Mode, HPF off), G = 8.
G = 16, External VREF
.
© 2007 Microchip Technology Inc.
DS21948D-page 7
MICROCHIP [ MICROCHIP ]
