Datasheet

 2012-2013 Microchip Technology Inc. DS20002286B-page 15
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 2-25: SNR vs. Input Signal
Amplitude.
FIGURE 2-26: SFDR vs. Input Signal
Amplitude.
FIGURE 2-27: THD vs. Temperature.
FIGURE 2-28: SINAD vs. Temperature.
FIGURE 2-29: SNR vs. Temperature.
FIGURE 2-30: SFDR vs. Temperature.
0
10
20
30
40
50
60
70
80
90
100
110
120
-6 -5 -4 -3 -2 -1 0 1 2 3
Signal-to-Noise Ratio (dB)
Input Signal Amplitude (dBFS)
Channel 1
Channel 0
0
10
20
30
40
50
60
70
80
90
100
110
120
-6-5-4-3-2-10123
Spurious Free Dyanmic Range
(dBFS)
Input Signal Amplitude (dBFS)
Channel 0
Channel 1
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-50 -25 0 25 50 75 100 125 150
Total Harominc Distortion (dBc)
Temperature (°C)
G = 1
G = 2
G = 4
G = 8
G = 16
G = 32
0
10
20
30
40
50
60
70
80
90
100
-50 -25 0 25 50 75 100 125 150
Signal-to-Noise and Distortion
Ratio (dB)
Temperature (°C)
G = 1
G = 2
G = 4
G = 8
G = 16
G = 32
0
10
20
30
40
50
60
70
80
90
100
-50 -25 0 25 50 75 100 125 150
Signal-to-Noise Ratio (dB)
Temperature (°C)
G = 1
G = 2
G = 4
G = 8
G = 16
G = 32
0
10
20
30
40
50
60
70
80
90
100
110
120
-50 -25 0 25 50 75 100 125 150
Spurious Free Dynamic Range
(dBFS)
Temperature (°C)
G = 1
G = 2
G = 4
G = 8
G = 16
G = 32