The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.    


Datasheet Search Engine   
 
Part # or Description: • 5V RS232 Driver • 2SC5066* • "Real Time Clock" • "USB connector" • "blue led" 5mm • 10 watt zener diode • 2N3055* motorola
 
Search Tip: Try entering the part number only. Include a wildcard (eg. lm317* or 1n4148*)

 

 

AM337 Contents: Introduction Application wire applicati


Datasheet Thumbnail

   

Download PDF

Top Searches for this datasheet



SWITCHING INTERFACE
AM337
Contents:
Introduction Application
wire application, status display over outputs point p-switch with internal values threshold hysteresis Page
Application
wire application, status display over outputs point p-switch with external values threshold hysteresis
Application
wire application, status display over outputs point p-switch with internal values threshold hysteresis additional alarm function using auxiliary comparator
Application
wire supply voltage application point p-switch with internal values threshold
Application
wire application, status display over driver output window comparator with internal values threshold hysteresis
Legend
analog microelectronics
Analog Microelectronics GmbH Fahrt 55124 Mainz Internet: www.analogmicro.de Phone: (0)6131/91 Fax: (0)6131/91 E-Mail: info@analogmicro.de
April 1/20
SWITCHING INTERFACE
FUNCTIONAL DIAGRAM
STABP(N)
AM337
VLOW
NULL
AUXIN TRESH3IN AUXOUT SCDIN
CSCD
SCDOUT
RREF
RREF
Short Circuit Detection
SENSEIN
Voltage Supplies
Comp
Output Stage
1.1mA 1.1mA
OUT1
1.6mA 1.6mA
Comp1 Delay Comp2
THRESH1IN THRESH2IN
OUT1I
AOUT
OUT2
GAIN
Logic
LED1
VIN- VIN+
1.1V
HYSTIN
Oscillator
CDELAY LED2
VBRIDGE
CMODE
RHYS1 RHYS2 CDEL
1.8V ROSC COSC
Figure
INTRODUCTION
AM337 complex switching interface. useable one/two point N-switches window comparator. addition there some supervisor protection functions which makes versatile applications where normally different devices have used. give overview about several functions Application Notes made. There point switch applications with internal/external hysteresis threshold settings, window comparator application point, supply voltage switch application. these applications made P-switches common external devices. there special application, example switch, feel free contact Analog Microelectronics. will more information request. Application Notes three special pages. table with practical input/output relations, declaration symbols used input/output tables list external components (transistors, diodes, other) which used different applications.
analog microelectronics
April 2/20
SWITCHING INTERFACE Application
TOPOLOGY
CSCD
LED2
AM337
NULL OUT2
LED1
COSC ROSC
Supervisor Pins
C1V8 RREF
CDEL
VBRIDGE
Figure
GENERAL DESCRIPTION (CMODE
application internal values hysteresis threshold used. application with minimum external components shows functions AM337 used point switch. principal application made 3(4) wire, point P-switch. result, transistors output PNP-Devices. input transistors must chosen displayed Figure transistor must PNP-, transistor NPN-device. supply voltage connected system pins NULL. detecting input signal only Instrumentation Amplifier input used. differential input signal displayed with Wheatstone bridge symbol. gain second level with external resistors RG2. gain complete becomes then
analog microelectronics
April 3/20
SWITCHING INTERFACE
AM337
threshold levels comparators Comp1 Comp2 (Comp1) 2.4V (Comp2), without external circuitry pins THRESH1IN THRESH2IN. internal hysteresis becomes 1.1V, hysteresis HYSTIN connected. With external circuitry following relation valid: VHYSTIN 1.1V
values threshold voltages given with respect middle voltage 4V). external setting values Application figure shown switching diagram input voltage from VIN+ VIN- -100mV 200mV. CMODE connected, that means that switching status comparator Comp1 shown driver outputs OUT1 OUT1I. status comparator Comp2 shown output OUT2. outputs OUT1 OUT1I protected active short circuit protection where duty cycle adjusted external capacitor CSCD. case short circuit output undervoltage they turned high impedance. there short circuit output current flows through resistor RSC. case that voltage difference between supply short circuit detection SENSEIN 200mV, short circuit protection starts. different operating modes AM337, including short circuit, indicated blinking LEDs. blinking frequency with external RC-circuit, ROSC COSC. With given values 1Hz. addition disturbance states linked directly simultaneously attached processor outputs SCDOUT VLOW. adjustable signal delay allows suppression disturbance transient input signals. Without external capacitor CDELAY shorter reaction times possible.
analog microelectronics
April 4/20
SWITCHING INTERFACE
SWITCHING DIAGRAM
[mV]
AM337
VTH2-HYS
VTH2
-0.9
VTH1
VTH1-HYSI-HYS
SOURCE
OUT1
SINK HIGH
OUT2
LIGHT
LED1
DARK LIGHT
LED2
DARK
Figure
analog microelectronics
April 5/20
SWITCHING INTERFACE Application
TOPOLOGY
CSCD
LED2
AM337
NULL OUT2
LED1
COSC ROSC
Supervisor Pins
C1V8 RREF
CDEL
VBRIDGE
Figure
GENERAL DESCRIPTION (CMODE
application values hysteresis threshold changed using external circuitry. application shows setting threshold hysteresis comparators Comp1 Comp2. application made 3(4) wire, point P-switch. result, transistors output PNP-Devices. input transistors must chosen displayed Figure transistor must PNP-, transistor NPN-device. supply voltage must connected system pins NULL. detecting input signal only Instrumentation Amplifier input used. differential input signal displayed with Wheatstone bridge symbol. gain second level with external resistors RG2. gain complete becomes then
analog microelectronics
April 6/20
SWITCHING INTERFACE
AM337
threshold levels comparators Comp1 Comp2 (Comp1) (Comp2), with external circuitry pins THRESH1IN THRESH2IN. circuitry realised with voltage sources. external voltage divider used internal voltage divider threshold pins have influence threshold voltages (see figure hysteresis setting external circuitry used. following relation valid: VHYSTIN 1.1V
HYSTIN connected that voltage VHYSTIN equal V4V. hysteresis becomes comparator Comp1 always internal minimum hysteresis HYSI. value given Electrical Specifications. figure shown switching diagram input voltage from VIN+ VIN- -100mV 200mV. values threshold voltages given with respect middle voltage 4V). result switching point from Comp1 (VTHRESH1IN =3V) -1V, comparator switches input voltage -55mV. switching point Comp2 calculated same 110mV. CMODE connected, that means that switching status comparator Comp1 shown driver outputs OUT1 OUT1I. status comparator Comp2 shown output OUT2. outputs OUT1 OUT1I protected active short circuit protection where duty cycle adjusted external capacitor CSCD. case short circuit output undervoltage they turned high impedance. there short circuit output current flows through resistor RSC. case that voltage difference between supply short circuit detection SENSEIN 200mV short circuit protection starts. different operating modes AM337, including short circuit, indicated blinking LEDs. blinking frequency with external RC-circuit, ROSC COSC. With given values 1Hz. addition disturbance states linked directly simultaneously attached processor outputs SCDOUT VLOW. adjustable signal delay allows suppression disturbance transient input signals. Without external capacitor CDELAY shorter reaction times possible.
analog microelectronics
April 7/20
SWITCHING INTERFACE
SWITCHING DIAGRAM
[mV]
AM337
-0.9 -1.0
VTH2
VTH1 VTH1-HYSI
internal hysteresis HYSI
SOURCE
OUT1
SINK HIGH
OUT2
LIGHT
LED1
DARK LIGHT
LED2
DARK
Figure
analog microelectronics
April 8/20
SWITCHING INTERFACE Application
TOPOLOGY
CSCD
LED2
AM337
NULL OUT2
LED1
COSC ROSC
Supervisor Pins
C1V8 RREF CDEL
RAL1 RAL2
ALARM SIGNAL
VBRIDGE
Figure
GENERAL DESCRIPTION (CMODE
application internal values hysteresis threshold used. application with minimum external components shows functions AM337 used point switch with third comparator alarm function switching output stage. application describes 3(4) wire, point P-switch. result, transistors output PNP-Devices. input transistors must chosen displayed Figure transistor must PNP-, transistor NPN-device. supply voltage must connected system pins NULL. detecting input signal only Instrumentation Amplifier input used. differential input signal displayed with Wheatstone bridge symbol. gain second level with external resistors RG2. gain complete becomes then
analog microelectronics
April 9/20
SWITCHING INTERFACE
AM337
threshold levels comparators Comp1 Comp2 (Comp1) 2.4V (Comp2), without external circuitry pins THRESH1IN THRESH2IN. internal hysteresis becomes 1.1V, hysteresis HYSTIN connected. With external circuitry following relation valid: VHYSTIN 1.1V
values threshold voltages given with respect middle voltage 4V). external setting values Application figure (application shown switching diagram input voltage from VIN+ VIN- -100mV 200mV. CMODE connected, what means that switching status comparator Comp1 shown driver outputs OUT1 OUT1I. status comparator Comp2 shown output OUT2. outputs OUT1 OUT1I protected active short circuit protection where duty cycle adjusted external capacitor CSCD. case short circuit output undervoltage they turned high impedance. there short circuit output current flows through resistor RSC. case that voltage difference between supply short circuit detection SENSEIN 200mV short circuit protection starts. different operating modes AM337, including short circuit, indicated blinking LEDs. blinking frequency with external RC-circuit, ROSC COSC. With given values 1Hz. addition disturbance states linked directly simultaneously attached processor outputs SCDOUT VLOW. adjustable signal delay allows suppression disturbance transient input signals. Without external capacitor CDELAY shorter reaction times possible. difference application additional alarm function Over third auxiliary comparator alarm function used switch output stages. Threshold hysteresis adjustable over external circuitry. application hysteresis (AUXOUT connected) adjusted. threshold voltage over THRESH3IN with relation: VTH3 VTRESH3IN VTH3OFFSET current application threshold THRESH3IN connected GND, threshold voltage equal value internal offset voltage VTH3OFFSET 0.7V (for DC-coupling). signal AUXIN higher than threshold voltage VTH3 will switched over OR-gate. Switching Diagram application similar application results outputs auxiliary comparator switches Functional Table.
analog microelectronics
April 10/20
SWITCHING INTERFACE
FUNCTIONAL TABLE (Application 1-3)
AM337
following table shows input/output behaviour different pins CMODE open (high impedanced). table shows only cases which relevant practical application.
INPUTS
CMODE TRESH1IN SCDOUT High High High High High High High High High High High High High High High High High High High High OUT1
OUTPUTS
OUT1I OUT2 High High High High High High High High LED1 LED2
analog microelectronics
April 11/20
SWITCHING INTERFACE Application
TOPOLOGY
NULL CSCD
LED2 LED1
AM337
COSC ROSC
Supervisor Pins
C1V8
RREF CDEL
Figure
GENERAL DESCRIPTION
Application made wire, point P-switch. result, transistor output PNP-Device. input transistors must chosen displayed Figure transistor must PNP-, transistor NPN-device. Used wire application AM337 supplied with only more than 2.1V. That makes universal point switch. supply voltage must connected system pins NULL. threshold THRESH1IN connected GND. Then complete comparators Comp1 Comp2 switched off. input stage this application input auxiliary comparator. Threshold hysteresis adjustable with external circuitry (see application Here hysteresis (AUXOUT connected) threshold internal value: VTH3 VTRESH3IN VTH3OFFSET with VTRESH3IN (TRESH3IN connected GND).
analog microelectronics
April 12/20
SWITCHING INTERFACE
AM337
input voltage becomes higher than VTH3 switches supply. Only voltage over Zener diode stabilises that switch input voltage lower than threshold voltage again. result status display shown over supply wires.
FUNCTIONAL TABLE (Application
following table shows input/output behaviour different pins wire applications. shows only cases which relevant practical application.
INPUTS
CMODE 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V TRESH1IN SCDOUT High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High OUT1
OUTPUTS
OUT1I OUT2 High High High High High High High High High High High High High High High High LED1 LED2
analog microelectronics
April 13/20
SWITCHING INTERFACE Application
TOPOLOGY
CSCD
LED2
AM337
NULL OUT2
LED1
COSC ROSC
CAUTION
Supervisor Pins
C1V8 RREF CDEL
VBRIDGE
Figure
GENERAL DESCRIPTION (CMODE GND)
application internal values hysteresis threshold used. application with minimum external components shows functions AM337 used point switch. switching status shown driver output (window comparator application). principal application made 3(4) wire, point P-switch. result, transistors output PNP-Devices. input transistors must chosen displayed Figure transistor must PNP-, transistor NPN-device. supply voltage must connected system pins NULL. detecting input signal only Instrumentation Amplifier input used. differential input signal displayed with Wheatstone bridge symbol. gain second level with external resistors RG2. gain complete becomes then
analog microelectronics
April 14/20
SWITCHING INTERFACE
AM337
threshold levels comparators Comp1 Comp2 (Comp1) 2.4V (Comp2), without external circuitry pins THRESH1IN THRESH2IN. internal hysteresis becomes 1.1V, hysteresis HYSTIN connected. With external circuitry following relation valid: VHYSTIN 1.1V
values threshold voltages given with respect middle voltage 4V). external setting values Application figure shown switching diagram input voltage from VIN+ VIN- -100mV 200mV. CMODE connected GND, that means that switching status both (window comparator function) comparators, Comp1 Comp2, shown driver output OUT1 OUT1I. addition status comparator Comp2 shown output OUT2. outputs OUT1 OUT1I protected active short circuit protection where duty cycle adjusted external capacitor CSCD. case short circuit output undervoltage they turned high impedance. there short circuit output current flows through resistor RSC. case that voltage difference between supply short circuit detection SENSEIN 200mV, short circuit protection starts. different operating modes AM337, including short circuit, indicated blinking LEDs. blinking frequency with external RC-circuit, ROSC COSC. With given values 1Hz. addition disturbance states linked directly simultaneously attached processor outputs SCDOUT VLOW. adjustable signal delay allows suppression disturbance transient input signals. Without external capacitor CDELAY shorter reaction times possible.
analog microelectronics
April 15/20
SWITCHING INTERFACE
SWITCHING DIAGRAM
[mV]
AM337
VTH2-HYS
VTH2
-0.9
VTH1
VTH1-HYSI-HYS
SOURCE
OUT1
SINK HIGH
OUT2
LIGHT
LED1
DARK LIGHT
LED2
DARK
Figure
analog microelectronics
April 16/20
SWITCHING INTERFACE
FUNCTIONAL TABLE (Application
AM337
following table shows input/output behaviour different pins CMODE connected ground GND. that case outputs OUT1 OUT1I display switching status both comparators, Comp1 Comp2. table shows only cases which relevant practical application.
INPUTS
CMODE TRESH1IN SCDOUT High High High High High High High High High High High High High High High High High High High High OUT1
OUTPUTS
OUT1I OUT2 High High High High High High High High LED1 LED2
analog microelectronics
April 17/20
SWITCHING INTERFACE
FUNCTIONAL TABLE
INPUTS
CMODE 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V TRESH1IN SCDOUT High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High OUT1
AM337
OUTPUTS
OUT1I OUT2 High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High High LED1 LED2
analog microelectronics
April 18/20
SWITCHING INTERFACE
LEGEND Inputs
CMODE input input
AM337
regular supply less than supply 2.1V exceeding 2.1V supply High wire modus wire modus short circuit standard
THRESH1IN SCDOUT
(AOUT THRESH1IN AUXIN THRESH3IN) signal input (High) pulled down comparator output supply granted) auxiliary comparator output (AOUT THRESH2IN) signal input (High) only pulled down comparator output supply granted
Outputs
OUT1, OUT1I driver outputs output transistor OUT2 output works current source output works current sink output high impedanced
open collector output High transistor transistor high impedanced
LED1, LED2
connections; green yellow changeable dark light flashing external RC-circuit connected
analog microelectronics
April 19/20
SWITCHING INTERFACE
LIST EXTERNAL COMPONENTS
Symbol ROSC COSC CDEL CSCD C1V8 RREF LED1 LED2 CL-190G (Citizen) CL-190Y (Citizen) EC10 2.5V 4.741 2N4033 2N3019 792A 792A Description Value Unit
AM337
analog microelectronics
April 20/20

Other recent searches


VSD-350C - VSD-350C   VSD-350C Datasheet
UNR412x - UNR412x   UNR412x Datasheet
SF1197B - SF1197B   SF1197B Datasheet
PT6701--5V - PT6701--5V   PT6701--5V Datasheet
NTE6082 - NTE6082   NTE6082 Datasheet
MMAD1103 - MMAD1103   MMAD1103 Datasheet
Am79C970A - Am79C970A   Am79C970A Datasheet
Am79C900 - Am79C900   Am79C900 Datasheet

 

Privacy Policy | Disclaimer
© 2012 Datasheet Archive