Datasheet

MCP3204/3208
DS21298E-page 10 © 2008 Microchip Technology Inc.
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.
FIGURE 2-19: Gain Error vs. Temperature.
FIGURE 2-20: Signal-to-Noise (SNR) vs.
Input Frequency.
FIGURE 2-21: Total Harmonic Distortion
(THD) vs. Input Frequency.
FIGURE 2-22: Offset Error vs.
Temperature.
FIGURE 2-23: Signal-to-Noise and
Distortion (SINAD) vs. Input Frequency.
FIGURE 2-24: Signal-to-Noise and
Distortion (SINAD) vs. Input Signal Level.
-1.8
-1.6
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
-50 -25 0 25 50 75 100
Temperature (°C)
Gain Error (LSB)
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
0
10
20
30
40
50
60
70
80
90
100
110100
Input Frequency (kHz)
SNR (dB)
V
DD
= V
REF
= 2.7V
F
SAMPLE
= 50 ksps
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
110100
Input Frequency (kHz)
THD (dB)
V
DD
= V
REF
= 5V
F
SAMPLE
= 100 ksps
V
DD
= V
REF
= 2.7V
F
SAMPLE
= 50 ksps
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-50 -25 0 25 50 75 100
Temperature (°C)
Offset Error (LSB)
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
0
10
20
30
40
50
60
70
80
90
100
110100
Input Frequency (kHz)
SFDR (dB)
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps
V
DD
= V
REF
= 2.7 V
F
SAMPLE
= 50 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
= V
REF
= 2.7 V
F
SAMPLE
= 50 ksps
V
DD
= V
REF
= 5 V
F
SAMPLE
= 100 ksps