Datasheet

MCP3903
DS25048B-page 12 © 2011 Microchip Technology Inc.
Note: Unless otherwise indicated, AV
DD
= 5.0V, DV
DD
= 3.3 V; T
A
= +25°C, MCLK = 4 MHz; PRESCALE = 1; OSR =
64; GAIN = 1; Dithering OFF; V
IN
= -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 (
°
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 (°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
t
Error (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 (°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 (°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 (
°
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 (°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. Voltage Reference (V)
2.340
2.345
2.350
2.355
2.360
-40 -20 0 25 45 85 105 125
Int. Voltage Reference (V)
Temperature (
°
C)
2.340
2.345
2.350
2.355
2.360
-40 -20 0 25 45 85 105 125
Int. Voltage Reference (V)
Temperature (°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. Voltage Reference (V)
2.35466
2.35467
2.35468
2.35469
2.35470
2.35471
2.35472
2.35473
4.5 5 5.5
Int. Voltage 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. Voltage Reference (V)
Power Supply (V)