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MCP3002-I/MS датащи(PDF) 12 Page - Microchip Technology

номер детали MCP3002-I/MS
подробное описание детали  2.7V Dual Channel 10-Bit A/D Converter with SPI??Serial Interface
PDF  28 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3002-I/MS датащи(HTML) 12 Page - Microchip Technology

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MCP3002
DS21294C-page 12
© 2007 Microchip Technology Inc.
FIGURE 4-1:
Analog Input Model.
FIGURE 4-2:
Maximum Clock Frequency vs. Input
resistance (R
S)
to maintain less than a 0.1 LSB
deviation in INL from nominal conditions.
C
PIN
VA
R
SS
CHx
7pF
V
T = 0.6V
V
T = 0.6V
I
LEAKAGE
Sampling
Switch
SS
R
S = 1 kΩ
C
SAMPLE
= DAC capacitance
V
SS
V
DD
= 20 pF
±1 nA
Legend
VA
=
signal source
R
SS
=
source impedance
CHx
=
input channel pad
C
PIN
=
input pin capacitance
V
T
=
threshold voltage
I
LEAKAGE
=
leakage current at the pin
due to various junctions
SS
=
sampling switch
R
S
=
sampling switch resistor
C
SAMPLE
=
sample/hold capacitance
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
100
1000
10000
Input Resistance (Ohms)
VDD = 5V
fSAMPLE = 200 ksps
VDD = 2.7V
fSAMPLE = 75 ksps



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