MCP3201
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100ksps, fCLK = 16*fSAMPLE,TA = 25°C
12.0
11.5
11.0
10.5
10.0
9.5
12.00
11.75
11.50
11.25
11.00
10.75
10.50
10.25
10.00
9.75
VDD = 5V
FSAMPLE = 100ksps
VDD = VREF = 5V
FSAMPLE =100ksps
VDD = VREF = 2.7V
FSAMPLE = 50ksps
9.0
VDD = 2.7V
9.50
9.25
FSAMPLE = 50ksps
8.5
9.00
8.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VREF (V)
1
10
100
Input Frequency (kHz)
FIGURE 2-25: Effective Number of Bits (ENOB) vs.
FIGURE 2-28: Effective Number of Bits (ENOB) vs.
VREF.
Input Frequency.
0
-10
-20
-30
-40
-50
-60
-70
-80
100
VDD = VREF = 5V
SAMPLE = 100ksps
90
F
80
70
60
50
40
30
20
10
0
VDD = VREF = 2.7V
SAMPLE = 50ksps
F
1
10
100
1
10
100
1000
10000
Input Frequency (kHz)
Ripple Frequency (kHz)
FIGURE 2-26: Spurious Free Dynamic Range
FIGURE 2-29: Power Supply Rejection (PSR) vs.
(SFDR) vs. Input Frequency.
Ripple Frequency.
0
0
-10
-20
-30
-10
-20
-30
VDD = VREF = 2.7V
VDD = VREF = 5V
F
F
SAMPLE = 50ksps
INPUT = 998.76Hz
FSAMPLE = 100ksps
FINPUT = 9.985kHz
4096 points
-40
-40
4096 points
-50
-50
-60
-60
-70
-70
-80
-80
-90
-90
-100
-110
-120
-130
-100
-110
-120
-130
0
10000
20000
30000
40000
50000
0
5000
10000
15000
20000
25000
Frequency (Hz)
Frequency (Hz)
FIGURE 2-27: Frequency Spectrum of 10kHz input
FIGURE 2-30: Frequency Spectrum of 1kHz input
(Representative Part).
(Representative Part, VDD = 2.7V).
1999 Microchip Technology Inc.
Preliminary
DS21290B-page 9
MICROCHIP [ MICROCHIP ]
