Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

TC815 Datasheet(PDF) 8 Page - Microchip Technology

Part # TC815
Description  3-1/2 Digit Auto-Ranging A/D Converter with Triplex LCD Drive and Display Hold Function
PDF  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC815 Datasheet(HTML) 8 Page - Microchip Technology

Back Button TC815 Datasheet HTML 4Page - Microchip Technology TC815 Datasheet HTML 5Page - Microchip Technology TC815 Datasheet HTML 6Page - Microchip Technology TC815 Datasheet HTML 7Page - Microchip Technology TC815 Datasheet HTML 8Page - Microchip Technology TC815 Datasheet HTML 9Page - Microchip Technology TC815 Datasheet HTML 10Page - Microchip Technology TC815 Datasheet HTML 11Page - Microchip Technology TC815 Datasheet HTML 12Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 26 page
background image
TC815
DS21474B-page 8
© 2002 Microchip Technology Inc.
FIGURE 3-1:
RATIOMETRIC RESISTANCE MEASUREMENT FUNCTIONAL DIAGRAM
FIGURE 3-2:
RESISTANCE MEASUREMENT ACCURACY SET BY EXTERNAL
STANDARD RESISTOR
Buffer
TC815
R6/100k
Ω
50
32
S19
DE
S20
VCC - 2.6V
1.5kV
VCC
Low Ohms
HI
Ohms
VA
S29
S30
S31
S32
S33
÷1
÷10
÷100
÷1k
÷10k
S28
S27
S26
S25
S24
DE
S23
Voltage
Reference
39
38
37
36
35
Integrator
Comparator
S37
S35
55
54
R
ΩBUF
S12
S13
DE
S18
S21
DE
INT • (
Ω + DC)
33
CREF
0.1µF
R7/100k
31
Analog
Common
29
34
28
10k
Ω
57
30
30
VSSA
9V
R18
24k
Ω
5k
Ω
REFHI
220k
Ω
49
0.1µF
150k
Ω
RVIBUF
47
CINT
0.1µF
S36
S34
RX
Unknown
R8
220
Ω
V •
1
1
R5/1638500
Ω
R4/163850
Ω
R3/16385
Ω
R2/1638.5
Ω
R1/163.85
Ω
DE +
Ω
• LO
CAZ
VCC - 2.8V
≈
VSSD
VCC
~
1.5k
Ω
~
•
•
•
DE
•
Ω
•
•
50
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
+
–
Example: 200k
Ω Full Scale Measurement
VR
163.85k
Ω
163.85
220
RX
++
-------------------------------------------------

 x0.64
=
(a )
(b)
VX
RX
163.85k
Ω 220Ω RX
++
--------------------------------------------------------------

 x0.64
=
(c) “Ramp Up Voltage” = “Ramp Down Voltage”
VX
R
ICI
()
----------------xT
I
VX
R
ICI
()
----------------T
DE
=
.
..
Where:
RI = Integrating Resistor, TI = Integrate Time
CI = Integrating Capacitor, TDE = Deintegrate Time
(d)
RX = 163.85
TI
(TDE)
Independent of RI,CI or Internal Voltage Reference
Unknown
RX
220
Ω
0.64V for Ohms
0.32V for LO Ohms
To Analog Buffer
VX
VR
CREF
100 k
Ω
RS
16.385k
+
VR
VA



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com