MCP3008T-I/P Просмотр технического описания (PDF) - Microchip Technology
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производитель
MCP3008T-I/P
Microchip Technology
MCP3008T-I/P Datasheet PDF : 40 Pages
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MCP3004/3008
Note: Unless otherwise indicated, VDD = VREF = 5V, fCLK = 18* fSAMPLE, TA = +25°C.
10.00
9.75
9.50
VDD = VREF = 2.7 V
fSAMPLE = 75 ksps
9.25
9.00
VDD = VREF = 5 V
fSAMPLE = 200 ksps
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VREF (V)
FIGURE 2-25:
Effective Number of Bits
(ENOB) vs. VREF.
10.0
9.8
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
1
VDD = VREF = 5V
fSAMPLE = 200 ksps
VDD = VREF = 2.7V
fSAMPLE = 75 ksps
10
100
Input Frequency (kHz)
FIGURE 2-28:
Effective Number of Bits
(ENOB) vs. Input Frequency.
100
90
80
70
60
50
40
30
20
10
0
1
VDD = VREF = 5 V
fSAMPLE = 200 ksps
VDD = VREF = 2.7 V
fSAMPLE = 75 ksps
10
100
Input Frequency (kHz)
FIGURE 2-26:
Spurious Free Dynamic
Range (SFDR) vs. Input Frequency.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
0
VDD = VREF = 5 V
FSAMPLE = 200 ksps
FINPUT = 10.0097 kHz
4096 points
20000
40000
60000
Frequency (Hz)
80000
100000
FIGURE 2-27:
Frequency Spectrum of
10 kHz Input (Representative Part).
0
VDD = VREF = 5 V
-10 fSAMPLE = 200 ksps
-20
-30
-40
-50
-60
-70
1
10
100
1000
Ripple Frequency (kHz)
10000
FIGURE 2-29:
Power Supply Rejection
(PSR) vs. Ripple Frequency.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
0
VDD = VREF = 2.7 V
fSAMPLE = 75 ksps
fINPUT = 1.00708 kHz
4096 points
5000 10000 15000 20000 25000 30000 35000
Frequency (Hz)
FIGURE 2-30:
Frequency Spectrum of
1 kHz Input (Representative Part, VDD = 2.7V).
© 2008 Microchip Technology Inc.
DS21295D-page 11
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