MCP3002
Note:
Unless otherwise indicated, V
DD
= 5V, f
SAMPLE
= 200 ksps, f
CLK
= 16* f
SAMPLE
, T
A
= +25°C.
80
70
60
50
40
30
20
10
0
1
10
Input Frequency (kHz)
100
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
V
DD
= 5V
f
SAMPLE
= 200 ksps
80
70
60
SINAD (dB)
50
40
30
20
10
0
1
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
V
DD
= 5V
f
SAMPLE
= 200 ksps
SNR (dB)
10
Input Frequency (kHz)
100
FIGURE 2-19:
Signal-to-Noise Ratio
(SNR) vs. Input Frequency.
FIGURE 2-22:
Signal-to-Noise and
Distortion (SINAD) vs. Input Frequency.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
1
80
70
SINAD (dB)
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
60
50
40
30
20
10
0
-40
V
DD
= 5V
f
SAMPLE
= 200 ksps
THD (dB)
V
DD
= 5V
f
SAMPLE
= 200 ksps
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
10
Input Frequency (kHz)
100
-35
-30
-25
-20
-15
-10
Input Signal Level (dB)
-5
0
FIGURE 2-20:
Total Harmonic Distortion
(THD) vs. Input Frequency.
FIGURE 2-23:
Signal-to-Noise and
Distortion (SINAD) vs. Signal Level.
10.0
9.9
9.8
ENOB
9.7
9.6
9.5
9.4
2.5
3.0
3.5
4.0
V
DD
(V)
4.5
5.0
5.5
All points at f
SAMPLE
= 200 ksps
except V
DD
= 2.7V, f
SAMPLE
= 75 ksps
10.0
9.5
ENOB (rms)
9.0
8.5
8.0
1
V
DD
= 2.7V
f
SAMPLE
= 75 ksps
V
DD
= 5V
f
SAMPLE
= 200 ksps
10
Input Frequency (kHz)
100
FIGURE 2-21:
(ENOB) vs. V
DD
.
Effective Number of Bits
FIGURE 2-24:
Effective Number of Bits
(ENOB) vs. Input Frequency.
DS21294D-page 10
©
2008 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
