MCP3204/3208
Note:
Unless otherwise indicated, V
DD
= V
REF
= 5V, V
SS
= 0V, f
SAMPLE
= 100 ksps, f
CLK
= 20* f
SAMPLE
,T
A
= 25°C.
0.2
0.0
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
2.0
1.8
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
Offset Error (LSB)
Gain Error (LSB)
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
-1.6
-1.8
-50
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
FIGURE 2-19:
Gain Error vs. Temperature.
FIGURE 2-22:
Temperature.
100
Offset Error vs.
100
90
80
70
60
50
40
30
20
10
0
1
10
100
V
DD
= V
REF
= 2.7V
F
SAMPLE
= 50 ksps
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
90
80
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
SFDR (dB)
70
60
50
40
30
20
10
0
1
10
100
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
SNR (dB)
Input Frequency (kHz)
Input Frequency (kHz)
FIGURE 2-20:
Input Frequency.
0
-10
-20
-30
Signal to Noise (SNR) vs.
FIGURE 2-23:
Signal to Noise and
Distortion (SINAD) vs. Input Frequency.
80
70
V
DD
= V
REF
= 2.7V
F
SAMPLE
= 50 ksps
60
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
-40
-50
-60
-70
-80
-90
SINAD (dB)
THD (dB)
50
40
30
20
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
V
DD
= V
REF
= 5V
F
SAMPLE
= 100 ksps
1
10
100
10
0
-40
-35
-30
-25
-20
-15
-10
-5
0
-100
Input Frequency (kHz)
Input Signal Level (dB)
FIGURE 2-21:
Total Harmonic Distortion
(THD) vs. Input Frequency.
FIGURE 2-24:
Signal to Noise and
Distortion (SINAD) vs. Input Signal Level.
©
2007 Microchip Technology Inc.
DS21298D-page 9
MICROCHIP [ MICROCHIP TECHNOLOGY ]
