Unless otherwise indicated, AVDD
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MCP3903
DS25048B-page 12
2011 Microchip Technology Inc.
Note:
Unless otherwise indicated, AVDD = 5.0V, DVDD = 3.3 V; TA = +25掳C, MCLK = 4 MHz; PRESCALE = 1; OSR =
64; GAIN = 1; Dithering OFF; VIN = -0.5 dBFS @ 60 Hz.
FIGURE 2-19:
Offset Error vs. Temperature
(Channel 0).
FIGURE 2-20:
Channel-to-Channel Offset
Match vs. Temperature.
FIGURE 2-21:
Gain Error vs. Temperature.
FIGURE 2-22:
Internal Voltage Reference
vs. Temperature.
FIGURE 2-23:
Internal Voltage Reference
vs. Supply Voltage.
FIGURE 2-24:
Noise Histogram.
120
1.40
G=8
0.80
1.00
1.20
1.40
(mV)
G=16
G=1
G=8
0.40
0.60
0.80
1.00
1.20
1.40
Error
(mV)
G=2
G=16
G=1
G=8
000
0.20
0.40
0.60
0.80
1.00
1.20
1.40
O
ffset
Error
(mV)
G=4
G=2
G=16
G=1
G=8
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
Offset
Error
(mV)
G=32
G=4
G=2
G=16
G=1
G=8
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
-40
-20
0
25
45
85
105 125
Offset
Error
(mV)
Temperature (掳C)
G=32
G=4
G=2
G=16
G=1
G=8
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
-40
-20
0
25
45
85
105 125
Offset
Error
(mV)
Temperature (掳C)
G=32
G=4
G=2
G=16
G=1
G=8
140
1.60
CH1
CH3
100
1.20
1.40
1.60
r(mV)
CH1
CH3
060
0.80
1.00
1.20
1.40
1.60
tError
(mV)
CH0
CH1
CH2
CH3
CH5
0.40
0.60
0.80
1.00
1.20
1.40
1.60
O
ffset
Error
(mV)
CH0
CH1
CH2
CH3
CH4
CH5
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
Offset
Error
(mV)
CH0
CH1
CH2
CH3
CH4
CH5
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
-40
-20
0
25
45
85
105 125
Offset
Error
(mV)
Temperature (掳C)
CH0
CH1
CH2
CH3
CH4
CH5
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
-40
-20
0
25
45
85
105 125
Offset
Error
(mV)
Temperature (掳C)
CH0
CH1
CH2
CH3
CH4
CH5
0.00
-0.10
-0.05
0.00
(%)
G=1
G=8
-0.15
-0.10
-0.05
0.00
Error
(%)
G=32
G=16
G=2
G=1
G=8
-0.20
-0.15
-0.10
-0.05
0.00
Gain
Error
(%)
G=32
G=16
G=2
G=1
G=8
030
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
Gain
Error
(%)
G=32
G=4
G=16
G=2
G=1
G=8
-0.30
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
-40
-20
0
25
45
85
105 125
Gain
Error
(%)
Temperature (掳C)
G=32
G=4
G=16
G=2
G=1
G=8
-0.30
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
-40
-20
0
25
45
85
105 125
Gain
Error
(%)
Temperature (掳C)
G=32
G=4
G=16
G=2
G=1
G=8
2.360
(V)
2.355
2.360
rence
(V)
2.350
2.355
2.360
e
Reference
(V)
2.345
2.350
2.355
2.360
Vo
ltage
Reference
(V)
2.340
2.345
2.350
2.355
2.360
Int.
V
o
ltage
Reference
(V)
2.340
2.345
2.350
2.355
2.360
-40
-20
0
25
45
85
105 125
Int.
V
o
ltage
Reference
(V)
Temperature (掳C)
2.340
2.345
2.350
2.355
2.360
-40
-20
0
25
45
85
105 125
Int.
V
o
ltage
Reference
(V)
Temperature (掳C)
2 35472
2.35473
2.35471
2.35472
2.35473
n
ce
(V)
2 35469
2.35470
2.35471
2.35472
2.35473
R
eference
(V)
2.35468
2.35469
2.35470
2.35471
2.35472
2.35473
a
ge
Reference
(V)
2 35466
2.35467
2.35468
2.35469
2.35470
2.35471
2.35472
2.35473
n
t.
V
o
ltage
Reference
(V)
2.35466
2.35467
2.35468
2.35469
2.35470
2.35471
2.35472
2.35473
4.5
5
5.5
Int.
V
o
ltage
Reference
(V)
Power Supply (V)
2.35466
2.35467
2.35468
2.35469
2.35470
2.35471
2.35472
2.35473
4.5
5
5.5
Int.
V
o
ltage
Reference
(V)
Power Supply (V)
鐩搁棞(gu膩n)PDF璩囨枡
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