Microchip Technology ARD00342 Data Sheet
© 2011 Microchip Technology Inc.
DS22192D-page 13
MCP3901
Note:
Unless otherwise indicated, AV
DD
= 5.0V, DV
DD
= 5.0V; T
A
= +25°C, MCLK = 4 MHz; PRESCALE = 1;
OSR = 64; GAIN = 1; Dithering OFF; V
IN
= -0.5 dBFS @ 60 Hz.
FIGURE 2-25:
Positive Gain Error vs.
Temperature.
FIGURE 2-26:
Negative Gain Error vs.
Temperature
FIGURE 2-27:
Internal Voltage Reference
vs. Temperature.
FIGURE 2-28:
Internal Voltage Reference
vs. Supply Voltage.
FIGURE 2-29:
Signal-to-Noise and
Distortion vs. Master Clock (MCLK), BOOST ON.
FIGURE 2-30:
Noise Histogram.
-2
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
-50
-25
0
25
50
75
100
125
150
Temperature (°C)
P
o
si
ti
ve
G
a
in
E
rr
o
r
(%
F
S
)
G=1
G=2
G=2
G=8
G=16
G=4
G=32
-2
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
-50
-25
0
25
50
75
100
125
150
Temperature (°C)
N
e
g
a
ti
ve
G
a
in E
rr
o
r
(%
F
S
)
G=1
G=2
G=8
G=16
G=8
G=16
G=4
G=32
2.35
2.36
2.37
2.38
2.39
2.4
-50
-25
0
25
50
75
100
125
150
Temperature (°C)
In
t.
V
o
ltag
e R
e
fer
e
n
ce (
V
)
2.3713
2.37135
2.3714
2.37145
2.3715
2.37155
2.3716
2.37165
4.5
4.8
5.0
5.3
5.5
Power Supply (V)
In
t.
V
o
lt
ag
e
R
e
fe
re
nc
e
(V
)
0
10
20
30
40
50
60
70
80
90
100
3
5
7
9
11
MCLK Frequency (MHz)
S
INAD (
d
B)
0
1000
2000
3000
4000
5000
6000
7000
8000
-3000
-2000
-1000
0
1000
2000
3000
Output Code (LSB)
Fr
e
que
n
c
y
of O
c
c
u
re
nc
e
Channel 0
V
V
IN
= 0V
T
A
= +25°C
16384 Consecutive
Readings
24-bit Mode
Readings
24-bit Mode