Datasheet

 2012-2013 Microchip Technology Inc. DS20002286B-page 17
MCP3911
Note: Unless otherwise indicated, AV
DD
= 3.3V, DV
DD
= 3.3V; T
A
= +25°C, MCLK = 4 MHz; PRESCALE = 1;
OSR = 256; GAIN = 1; Dithering = Maximum; V
IN
= -0.5 dBFS at 60 Hz, VREFEXT = 0; CLKEXT = 1, AZ_FREQ = 0;
BOOST = 1X.
FIGURE 2-37: V
REF
Drift Data Histogram
Chart.
FIGURE 2-38: Integral Non-Linearity
(Dithering Maximum).
FIGURE 2-39: Integral Non-Linearity
(Dithering Off).
FIGURE 2-40: Operating Current vs.
MCLK, V
DD
= 3.3V.
FIGURE 2-41: Operating Current vs.
MCLK, V
DD
= 2.7V.
0
2
4
6
8
10
12
14
03691215182124
Frequency of Occurrence
Internal Voltage Reference Drift (ppm/C)
-25
-20
-15
-10
-5
0
5
10
15
20
25
-0.6 -0.3 0 0.3 0.6
Integral Non-Linearity Error
(ppm)
Input Voltage (V)
Channel 0
Channel 1
-25
-20
-15
-10
-5
0
5
10
15
20
25
-0.6 -0.3 0 0.3 0.6
Integral Non-Linearity Error
(ppm)
Input Voltage (V)
Channel 0
Channel 1
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30
I
DD
(mA)
MCLK Frequency (MHz)
AI
DD
, Boost = 2x
AI
DD
, Boost = 1x
AI
DD
, Boost = 0.6x
AI
DD
, Boost = 0.5x
DI
DD
, All Boost Settings
0
0.5
1
1.5
2
2.5
3
3.5
4
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30
I
DD
(mA)
MCLK Frequency (MHz)
AI
DD
, Boost = 2x
AI
DD
, Boost = 1x
AI
DD
, Boost = 0.6x
AI
DD
, Boost = 0.5x
DI
DD
, All Boost Settings