參數(shù)資料
型號： MCP3208-BI/ST
元件分類： ADC
英文描述： 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO14
封裝： 4.4 MM, PLASTIC, TSSOP-14
文件頁數(shù)： 3/40頁
文件大?。?/td> 722K
代理商： MCP3208-BI/ST
2008 Microchip Technology Inc.
DS21298E-page 11
MCP3204/3208
Note:
Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-25:
Effective Number of Bits
(ENOB) vs. VREF.
FIGURE 2-26:
Spurious Free Dynamic
Range (SFDR) vs. Input Frequency.
FIGURE 2-27:
Frequency Spectrum of
10 kHz input (Representative Part).
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, VDD = 2.7V).
9.00
9.25
9.50
9.75
10.00
10.25
10.50
10.75
11.00
11.25
11.50
11.75
12.00
0.00.5
1.01.5
2.02.5
3.03.5
4.04.5
5.0
V
REF (V)
ENOB
(
rms
)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE =100 ksps
0
10
20
30
40
50
60
70
80
90
100
110
100
Input Frequency (kHz)
SFDR
(dB
)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10000
20000
30000
40000
50000
Frequency (Hz)
Amplitude
(dB)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
FINPUT = 9.985 kHz
4096 points
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
110
100
Input Frequency (kHz)
ENOB
(
rms
)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE = 100 ksps
-80
-70
-60
-50
-40
-30
-20
-10
0
1
10
100
1000
10000
Ripple Frequency (kHz)
Power
Suppl
y
Rejection
(dB)
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
5000
10000
15000
20000
25000
Frequency (Hz)
Ampli
tude
(dB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
FINPUT = 998.76 Hz
4096 points
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