MCP3911
2.0 TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise indicated, AVDD = 3.3V, DVDD = 3.3V; TA = +25°C, MCLK = 4 MHz; PRESCALE = 1;
OSR = 256; GAIN = 1; Dithering = Maximum; VIN = -0.5 dBFS at 60 Hz, VREFEXT = 0; CLKEXT = 1, AZ_FREQ = 0;
BOOST = 1X.
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
0
fIN = -0.5 dBFS @ 60 Hz
fD = 3.9 ksps
16384 pt FFT
OSR = 256
Dithering = None
200 400 600 800 1000 1200 1400 1600 1800 2000
Frequency (Hz)
FIGURE 2-1:
Spectral Response.
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
0
fIN = -0.5 dBFS @ 60 Hz
fD = 3.9 ksps
16384 pt FFT
OSR = 256
Dithering = Maximum
200 400 600 800 1000 1200 1400 1600 1800 2000
Frequency (Hz)
FIGURE 2-4:
Spectral Response.
0
-20
-40
-60
-80
-100
fIN = -60 dBFS@ 60 Hz
fD = 3.9 ksps
16384 pt FFT
OSR = 256
Dithering = None
-120
-140
-160
-180
-200
0
200 400 600 800 1000 1200 1400 1600 1800 2000
Frequency (Hz)
FIGURE 2-2:
Spectral Response.
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
0
fIN = -60 dBFS @ 60 Hz
fD = 3.9 ksps
16384 pt FFT
OSR = 256
Dithering = Maximum
200 400 600 800 1000 1200 1400 1600 1800 2000
Frequency (Hz)
FIGURE 2-5:
Spectral Response.
-107.3 -107.1 -107.0 -106.8 -106.7 -106.5 -106.4 -106.2 -106.1 -105.9 -105.8
Total Harmonic Distortion (-dBc)
FIGURE 2-3:
THD Histogram.
94.2 94.3 94.5 94.6 94.8 94.9 95.1 95.2 95.4 95.5
Signal-to-Noise and Distortion Ratio (dB)
FIGURE 2-6:
SINAD Histogram.
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DS20002286C-page 11