поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

CS1124YD8G датащи(PDF) 4 Page - ON Semiconductor

номер детали CS1124YD8G
подробное описание детали  Dual Variable?뭃eluctance Sensor Interface IC
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS1124YD8G датащи(HTML) 4 Page - ON Semiconductor

  CS1124YD8G Datasheet HTML 1Page - ON Semiconductor CS1124YD8G Datasheet HTML 2Page - ON Semiconductor CS1124YD8G Datasheet HTML 3Page - ON Semiconductor CS1124YD8G Datasheet HTML 4Page - ON Semiconductor CS1124YD8G Datasheet HTML 5Page - ON Semiconductor CS1124YD8G Datasheet HTML 6Page - ON Semiconductor CS1124YD8G Datasheet HTML 7Page - ON Semiconductor CS1124YD8G Datasheet HTML 8Page - ON Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 4 / 8 page
background image
CS1124
http://onsemi.com
4
THEORY OF OPERATION
NORMAL OPERATION
Figure 2 shows one channel of the CS1124 along with the
necessary external components. Both channels share the
INAdj pin as the negative input to a comparator. A brief
description of the components is as follows:
VRS − Ideal sinusoidal, ground referenced, sensor output
− amplitude usually increases with frequency, depending on
loading.
RRS − Source impedance of sensor.
R1/RAdj − External resistors for current limiting and
biasing.
INP1/INAdj − Internal current sources that determine trip
points via R1/RAdj.
COMP1 − Internal comparator with built−in hysteresis
set at 160 mV.
OUT1 − Output 0 V − 5.0 V square wave with the same
frequency as VRS.
By inspection, the voltage at the (+) and (−) terminals of
COMP1 with VRS = 0V are:
V+
+ INP1(R1 ) RRS)
(1)
V−
+ INAdj
RAdj
(2)
As VRS begins to rise and fall, it will be superimposed on
the DC biased voltage at V+.
V+
+ INP1(R1 ) RRS) ) VRS
(3)
To get comparator COMP1 to trip, the following
condition is needed when crossing in the positive direction,
V+
u V− ) VHYS
(4)
(VHYS is the built−in hysteresis set to 160 mV), or when
crossing in the negative direction,
V+
t V− * VHYS
(5)
Combining equations 2, 3, and 4, we get:
INP1(R1
) RRS) ) VRS u INAdj
RAdj ) VHYS (6)
therefore,
VRS(+TRP) t INAdj
RAdj * INP1(R1 ) RRS) ) VHYS
(7)
It should be evident that tripping on the negative side is:
VRS(−TRP) t INAdj
RAdj * INP1(R1 ) RRS) * VHYS
(8)
In normal mode,
INP1
+ INAdj
(9)
We can now re−write equation (7) as:
VRS(+TR) u INP1(RAdj * R1 * RRS) ) VHYS (10)
By making
RAdj + R1 ) RRS
(11)
you can detect signals with as little amplitude as VHYS.
A design example is given in the applications section.
OPEN SENSOR PROTECTION
The CS1124 has a DIAG pin that when pulled high (5.0 V),
will increase the INAdj current source by roughly 50%.
Equation (7) shows that a larger VRS(+TRP) voltage will be
needed to trip comparator COMP1. However, if no VRS
signal is present, then we can use equations 1, 2, and 4
(equation 5 does not apply in this mode) to get:
INP1(R1
) RRS) u INP1
KI
RAdj ) VHYS (12)
Since RRS is the only unknown variable we can solve for
RRS,
RRS +
INP1
KI
RAdj ) VHYS
INP1
* R1
(13)
Equation (13) shows that if the output switches states
when entering the diag mode with VRS = 0, the sensor
impedance must be greater than the above calculated value.
This can be very useful in diagnosing intermittent sensor.
INPUT PROTECTION
As shown in Figure 2, an active clamp is provided on each
input to limit the voltage on the input pin and prevent
substrate current injection. The clamp is specified to handle
±12 mA. This puts an upper limit on the amplitude of the
sensor output. For example, if R1 = 20 k, then
VRS(MAX) + 20 k
12 mA
+ 240 V
Therefore, the VRS(pk−pk) voltage can be as high as 480 V.
The CS1124 will typically run at a frequency up to 1.8 MHz
if the input signal does not activate the positive or negative
input clamps. Frequency performance will be lower when
the positive or negative clamps are active. Typical
performance will be up to a frequency of 680 kHz with the
clamps active.


Аналогичный номер детали - CS1124YD8G

производительномер деталидатащиподробное описание детали
logo
ON Semiconductor
CS1124YD8 ONSEMI-CS1124YD8 Datasheet
89Kb / 8P
   Dual Variable-Reluctance Sensor Interface IC
April, 2001 ??Rev. 6
More results

Аналогичное описание - CS1124YD8G

производительномер деталидатащиподробное описание детали
logo
ON Semiconductor
NCV1124 ONSEMI-NCV1124 Datasheet
92Kb / 8P
   Dual Variable?뭃eluctance Sensor Interface IC
April, 2006 ??Rev. 0
CS1124-D ONSEMI-CS1124-D Datasheet
89Kb / 8P
   Dual Variable-Reluctance Sensor Interface IC
April, 2001 ??Rev. 6
NCV7001 ONSEMI-NCV7001_05 Datasheet
92Kb / 8P
   Quad Variable Reluctance Sensor Interface IC
July, 2005 ??Rev. 3
NCV7001 ONSEMI-NCV7001 Datasheet
74Kb / 8P
   Quad Variable Reluctance Sensor Interface IC
October, 2003 ??Rev. 2
logo
Asahi Kasei Microsystem...
AK8996 AKM-AK8996 Datasheet
1Mb / 74P
   Pressure Sensor Interface IC
logo
IC-Haus GmbH
IC-DI ICHAUS-IC-DI Datasheet
55Kb / 15P
   DUAL SENSOR INTERFACE
logo
List of Unclassifed Man...
SAP5SD-A-G1-T ETC2-SAP5SD-A-G1-T Datasheet
657Kb / 63P
   Universal Actuator-Sensor Interface IC
logo
Micro Analog systems
MAS6512 MAS-MAS6512 Datasheet
293Kb / 12P
   Capacitive Sensor Signal Interface IC
MAS6505 MAS-MAS6505 Datasheet
1Mb / 44P
   Piezoresistive Sensor Signal Interface IC
logo
Toshiba Semiconductor
TA8025P TOSHIBA-TA8025P Datasheet
194Kb / 5P
   PICK UP SENSOR INTERFACE IC
More results


Html Pages

1 2 3 4 5 6 7 8


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
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