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MCP3204-CI/ST 数据表(PDF) 18 Page - Microchip Technology

部件名 MCP3204-CI/ST
功能描述  2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface
PDF  40 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP3204-CI/ST 数据表(HTML) 18 Page - Microchip Technology

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MCP3204/3208
DS21298E-page 18
© 2008 Microchip Technology Inc.
FIGURE 4-1:
Analog Input Model.
FIGURE 4-2:
Maximum Clock Frequency
vs. Input resistance (RS) to maintain less than a
0.1 LSB deviation in INL from nominal
conditions.
CPIN
VA
RSS CHx
7pF
V
T = 0.6V
V
T = 0.6V
ILEAKEAGE
Sampling
Switch
SS
RS = 1 kΩ
C
SAMPLE
= DAC capacitance
VSS
VDD
= 20 pF
±1 nA
Legend
VA
= Signal Source
Ileakage
= Leakage Current At The Pin
Due To Various Junctions
Rss
= Source Impedance
SS
= Sampling switch
CHx
= Input Channel Pad
Rs
= Sampling switch resistor
Cpin
= Input Pin Capacitance
Csample
= Sample/hold capacitance
Vt
= Threshold Voltage
0.0
0.5
1.0
1.5
2.0
2.5
100
1000
10000
Input Resistance (Ohms)
VDD = 5 V
VDD = 2.7 V



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