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參數(shù)資料
| 型號： | TC835CPI |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Personal Computer Data Acquisition A/D Converter |
| 中文描述： | 個人計算機數(shù)據(jù)采集的A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 206K |
| 代理商： | TC835CPI |
3-68
TELCOM SEMICONDUCTOR, INC.
+
–
+
–
+
–
+IN
IN
REF
ANALOG
–IN
SWI
SWR
SWZ
SWI
SW1
SWZ
SWIZ
SWZ
INTEGRATOR
SWITCH CLOSED
SWITCH OPEN
SWRI
+
SWRI
–
COMPARATOR
TO
SWRI
+
SWRI
–
INANALOG
RINT
CINT
CREF
CSZ
+
–
+
–
+
–
+IN
IN
REF
ANALOG
–IN
SWI
SWR
SWI
SW1
SWZ
SWIZ
SWZ
INTEGRATOR
SWITCH CLOSED
SWITCH OPEN
SWRI
+
SWRI
–
COMPARATOR
TO
SWRI
+
SWRI
–
INANALOG
RINT
CINT
CREF
CSZ
+
–
+
–
+
–
+IN
IN
REF
ANALOG
–IN
SWI
SWR
SWZ
SWI
SW1
SWZ
SWIZ
SWZ
INTEGRATOR
INANALOG
SWRI
+
SWRI
–
COMPARATOR
TO
SWRI
+
SWRI
–
RINT
CINT
CREF
CSZ
Figure 3A. Analog Circuit Function Diagram
Figure 1. Test Circuit
1
2
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5
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7
8
9
10
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12
13
14
28
27
26
25
24
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22
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16
15
100 k
ANALOG GND
0.47
μF
100
k
SIGNAL
INPUT
0.1 μF
SET VREF = 1V
VREF IN
V –
REF IN
ANALOG
COMMON
INT OUT
AZ IN
BUFF OUT
C–
C+
–INPUT
+INPUT
V+
D5 (MSD)
B1 (LSB)
B2
UNDERRANGE
OVERRANGE
STROBE
RUN/HOLD
DIGTAL GND
POLARITY
CLOCK IN
BUSY
(LSD) D1
D2
D4
(MSB) B8
B4
D3
+5V
1 μF
100 k
1 μF
CLOCK
INPUT
120 kHz
–5V
TC835
BUFFER
LOGIC
INPUT
V+
Figure 3D. Reference Voltage Integration Cycle
+
–
+
–
+
–
+IN
IN
REF
ANALOG
–IN
SWI
SWR
SWZ
SWI
SW1
SWZ
SWIZ
SWZ
INTEGRATOR
SWITCH CLOSED
SWITCH OPEN
SWRI
+
SWRI
–
COMPARATOR
TO
SWRI
+
SWRI
–
INANALOG
RINT
CINT
CREF
CSZ
Figure 2. Digital Logic Input
Figure 3C. Input Signal Integration Phase
Figure 3B. System Zero Phase
PERSONAL COMPUTER
DATA ACQUISITION A/D CONVERTER
TC835
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