Datasheet

 2000-2011 Microchip Technology Inc. DS21294E-page 9
MCP3002
Note: Unless otherwise indicated, V
DD
= 5V, f
SAMPLE
= 200 ksps, f
CLK
= 16* f
SAMPLE
, T
A
= +25°C.
FIGURE 2-19: Signal-to-Noise Ratio
(SNR) vs. Input Frequency.
FIGURE 2-20: Total Harmonic Distortion
(THD) vs. Input Frequency.
FIGURE 2-21: Effective Number of Bits
(ENOB) vs. V
DD
.
FIGURE 2-22: Signal-to-Noise and
Distortion (SINAD) vs. Input Frequency.
FIGURE 2-23: Signal-to-Noise and
Distortion (SINAD) vs. Signal Level.
FIGURE 2-24: Effective Number of Bits
(ENOB) vs. Input Frequency.
0
10
20
30
40
50
60
70
80
110100
Input Frequency (kHz)
SNR (dB)
V
DD
= 2.7V
f
SAMPLE
= 75 ksps V
DD
= 5V
f
SAMPLE
= 200 ksps
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
110100
Input Frequency (kHz)
THD (dB)
V
DD
= 5V
f
SAMPLE
= 200 ksps
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
9.4
9.5
9.6
9.7
9.8
9.9
10.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
V
DD
(V)
ENOB
All points at f
SAMPLE
= 200 ksps
except V
DD
= 2.7V, f
SAMPLE
= 75 ksps
0
10
20
30
40
50
60
70
80
110100
Input Frequency (kHz)
SINAD (dB)
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
V
DD
= 5V
f
SAMPLE
= 200 ksps
0
10
20
30
40
50
60
70
80
-40 -35 -30 -25 -20 -15 -10 -5 0
Input Signal Level (dB)
SINAD (dB)
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
V
DD
= 5V
f
SAMPLE
= 200 ksps
8.0
8.5
9.0
9.5
10.0
110100
Input Frequency (kHz)
ENOB (rms)
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
V
DD
= 5V
f
SAMPLE
= 200 ksps