MCP3302-I/ST Microchip Technology, MCP3302-I/ST Datasheet - Page 9

• Manufacturer Part Number: MCP3302-I/ST
• Description: 13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface
• Manufacturer: Microchip Technology

Note: Unless otherwise indicated, V
f
FIGURE 2-25: Effective Number of Bits (ENOB) vs.
V
FIGURE 2-26: Spurious
(SFDR) vs. Input Frequency.
FIGURE 2-27: Frequency Spectrum of 10 kHz Input
(Representative Part).
CLK
REF
2001 Microchip Technology Inc.
.
= 21*f
13
12
11
10
100
9
8
7
-100
-110
-120
-130
-140
-150
90
80
70
60
50
40
30
20
10
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0
1
0
SAMPLE
1
10000
V
F
, T
DD
SAMPLE
=V
V
F
DD
SAMPLE
A
REF
=2.7V
= 50 ksps
Input Frequency (kHz)
= 25°C.
=2.7V
20000
= 50 ksps
Frequency (Hz)
2
V
REF
Free
10
(V)
30000
3
V
F
Dynamic
DD
DD
SAMPLE
=5V
V
F
SAMPLE
DD
40000
= 5V, Full differential input configuration, V
= 100 ksps
=V
4
REF
= 100 ksps
=5V
50000
Range
100
5
FIGURE 2-28: Effective Number of Bits (ENOB) vs.
Input Frequency.
FIGURE 2-29: Power Supply Rejection (PSR) vs.
Ripple Frequency.
FIGURE 2-30: Frequency Spectrum of 1 kHz Input
(Representative Part, V
-100
-110
-120
-130
-140
-150
12.8
12.6
12.4
12.2
11.8
11.6
11.4
11.2
-30
-35
-40
-45
-50
-55
-60
-65
-70
-75
-80
-10
-20
-30
-40
-50
-60
-70
-80
-90
13
12
0
1
0
1
5000
SS
10
V
F
DD
SAMPLE
Ripple Frequency (kHz)
= 0V, f
=V
MCP3302/04
Input Frequency (kHz)
REF
DD
10000
= 50 ksps
Frequency (Hz)
=2.7V
= 2.7V).
SAMPLE
100
10
15000
= 100 ksps,
1000
DS21697A-page 9
V
F
0.1 µF Bypass
DD
SAMPLE
Capacitor
20000
=V
REF
= 100 ksps
=5V
10000
25000
100