EVALUATION SYSTEM TC53x CONVERTERS Evaluation Prototyping TC530/5
|
|
|
Top Searches for this datasheet
EVALUATION TC53x CONVERTERS TC530EV TC530EV
EVALUATION SYSTEM TC53x CONVERTERS
Evaluation Prototyping TC530/534 Pre-Programmed Control Processor Easy Operation with RS232 Terminal, Personal Computer, etc. User Interface Allows Programming System Parameters Displaying Logging Data Using High-Level Commands Prototyping Area User Application Circuitry On-Board Positive Voltage Regulator Negative Supply Generator Single Supply Operation Used TC53x Control Emulator System Debugging WindowsTerminaland MicrosoftExcelSupport Files Included Circuit Design Required!
GENERAL DESCRIPTION
TC530EV evaluation development system TelCom's TC53x family dual slope integrating converters. TC530EV consists TC534 converter, preprogrammed microcontroller, negative supply generator, regulated power supply, user prototyping area. TC530EV connects RS232 terminal. Typically, host compatible other personal computer running communications program such WindowsTerminalTM, dumb terminal. user supplies fixed 5.0V power supply RS232 cable. TC530EV Evaluation System functions complete data acquisition system with maximum resolution bits (Overrange Sign Data). Conversion data accessed RS232 interface. Conversion speed resolution programmable. Jumpers allow user select factory-installed values integrating resistor capacitor, install specific values better suit specific application. software utility form Excelspreadsheet included that calculates components' values given desired system parameters. design effort required!
FUNCTIONAL BLOCK DIAGRAM
RS232 TERMINAL
TC232 RS232 INTERFACE
MICROCONTROLLER USER PROTOTYPING AREA
TC534
CHANNEL DIFF. INPUT
DC-DC CONVERTER
5.0V
REG.
TC530EV-2 3/24/98
TelCom Semiconductor reserves right make changes circuitry specifications devices.
EVALUATION TC53x CONVERTERS TC530EV
TABLE CONTENTS
Table Contents What Included With TC530EV/ What Must Provide Before Getting Started Hints Precautions Hardware Description Software Description Data Output Format Getting Started Setup Signal Connection Diagram TC5xx Design Software Using Design Software Using Spreadsheet Applications: TC530EV 10.1 Final Calibration TC530EV 10.2 Getting Most TC530EV Hardware Reference 11.1 Jumper Options 11.2 Test Points 11.3 Calibration Adjustments 11.4 Bill Materials
Appendix Serial Communications Appendix Board Schematic
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
WHAT INCLUDED WITH TCN75EV/ WHAT MUST PROVIDE
items Table should have been included when received TC530EV. them damaged missing, contact TelCom Semiconductor distributor from which received assistance. Certain items must provided user implement TC530EV system. They listed Table Table TC530EV Packing List Item
Read section What Included With TC530EV What Must Provide assemble necessary items. Perform steps outlined Getting Started. TC530EV should properly installed operating. Consult Applications section more information.
HINTS PRECAUTIONS
TC530EV only accepts regulated Volt inputs power supply terminals. Connecting incorrect power supply voltage polarity destroy TC530EV! TC530EV been operating properly suddenly stops responding host, simply turn power clear problem. TC530EV designed immune stalled TC5xx other condition encountered during testing development. greeting properly displayed, consider possible problems with serial communications. Serial Communications section. Before using TC530EV, confirm that configuration jumpers properly installed that TC530EV will behave intended. Table page very easy build working circuits using TC530EV. However, optimizing finer points calls understanding dual-slope analog digital conversion principals certain applications considerations common high performance data aquisition systems integrating converters particular. These described detail TC5xx Datasheet.
Quantity
Description
printed circuit board with components installed This TC530EV user's manual TC530ACPJ device samples TC534CPL device samples TC530/534 data sheet 1/2" 1.44MB diskette Application note Technical article: Cost Effective Coverter Family.
BEFORE GETTING STARTED
hope that everyone will anxious started using TC530EV. Getting Started section provided running quickly. Please complete following steps read Hints Precautions section before proceeding. This will likely avoid frustration possible damage TC530EV. Check contents received against TC530EV Packing List above. Table What Must Provide Item
Quantity
Description
5.0V, regulated power supply. Host terminal with RS232 interface. (See Appendix Cable connecting host above. Connecting leads, terminated banana plugs TC530EV connecting power supply above. Signal leads suitable insertion into clamp-type terminal block connecting input stimuli board inputs. Small flat-bladed screwdriver adjusting POT1/POT2 during calibration adjustment. (Optional) Components suitable integration capacitors resistors TC530A TC534, factory-supplied components used. (Optional) Jumpers with micro-clips connect TC530EV test points, etc. (Optional) Accurate voltage meter.
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
HARDWARE DESCRIPTION
Figure block diagram TC530EV showing configuration shipped from factory. This configuration that four-channel, single-ended converter powered user's 5.0V power supply on-board charge-pump inverter. on-board microcontroller supervises converter provides user interface RS232 port. conversion cycle completed when TC534 sequences through four conversion phases. These four phases are: Auto Zero, Integrate, Deintegrate, Integrator Zero. Timing these phases derived from Load Value specified user (see Getting Started section). various conversion phases described detail TC53x datasheet. Data transmitted RS232 terminal each conversion cycle. sign character result sampling comparator output just before entering deintegration phase. five-digit number following sign character number counts timebase which elapsed during deintegration. maximum range this count 65,535 counts either side zero. very short integrate/ deintegrate times, this value will span counts therefore, expected when TINT short, resolution will less than 16-bits. Data values returned TC530EV interpreted using Table Full-scale specified designer when determining passive component voltage reference values using Designer Spreadsheet doing calculations manually. Knowing full-scale input range, input voltage corresponding given conversion result counts) calculated follows: (RESULT) (Volts) (Full-Scale VIN), Deintegration Counts
SOFTWARE DESCRIPTION
pre-programmed microcontroller contains converter management software UART routines. microcontroller Zilog Z86E08 type running Mhz. custom-programmed this application cannot reprogrammed. Communication with microcontroller accomplished over RS232 serial port. Table summarizes microcontroller's command set.
DATA OUTPUT FORMAT
Conversion results sent host terminal seven-character ASCII string with following format: [Sign Character ("+" "-")] [Five Numeric Digits] [Carriage Return] Table Microcontroller Command Command
Initialize Load Value Conversion Continuous Conversions Data
where RESULT value returned TC530EV; DEINTEGRATION COUNTS full-scale count value calculated designer reported Designer Spreadsheet under PERFORMANCE; Full-Scale value chosen designer entered into Designer Spreadsheet. voltage corresponding given Full-Scale Deintegration Counts, using same values above. LSB(Volts)
Command*
<RETURN>
Description
Enter prompt. user will prompted enter value from 255. carriage return entered TC530EV> prompt returns result single conversion decimal ASCII, with sign. over-range condition causes ±99999 displayed. Enter prompt. TC530EV will perform continuous conversions display results. entry user will cancel this operation return TC530EV command prompt. Enter prompt. User will prompted number passes desired. four decimal digits entered, 9999. enter comma!) prompt will appear, TC530EV will wait RETURN before proceeding. other entry aborts this operation. Selects Channel Selects Channel Selects Channel Selects Channel question mark entered prompt will display help screen, mode settings, channel selection.
Select Channel
Display Help
Only uppercase characters valid.
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
This value calculated designer spreadsheet displayed PERFORMANCE section. Table TC530EV Data Output Format Conversion Result
Positive Positive Over-Range Positive Full Scale Positive Half-Scale Zero Negative Half-Scale Negative Full Scale Negative Over-Range
Value Returned
Value Returned +99999 +65535 +32768 +00000 -00000 -32768 -65535 -99999
GETTING STARTED
TC530EV shipped from factory configured outlined Table page Inspect settings board ensure they match those listed Table Ensure that switch OFF. helpful refer page Setup Signal Connection Diagram, while setting TC530EV.
DB25F RESET DOUT DCLK
TC232
TC534
INPUT TERMINAL BLOCK CH4-
TC534 Differential/ Single Ended Imput Select CH1- CH2- CH3- CH4-
CH3- CH2-
RESET DOUT DCLK CH4- CH3- CH2- CH1- CH4+ CH3+ CH2+ CH1+
CH1- CH4+ CH3+ CH2+ CH1+
DC-DC CONVERTER
VDD-
+5.0V Supply
ON/OFF TC55
+3/5V Select VDD+
Figure TC530EV Detailed Block Diagram Showing Factory Option Settings
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
Connect positive side +5VDC supply terminal negative side supply "-". Connect standard modem-type RS232 cable from RS232 port terminal. Connect clip lead other wire jumper from TB1's "1+" terminal test point near TC534, marked "REF" PCB. When this connection made, TC534's reference voltage (1.0V) will applied CH1+ input. using terminal device, start terminal emulation program (according manufacturer's directions). communications program 9600 baud, eight data bits, stop bit, parity. special terminal emulation required advised. communications standard ASCII. Communication half duplex with hardware handshaking. (See Appendix more information regarding serial communications. Appendix using Windows Terminal.) Turn power switch will light greeting will appear terminal screen. This greeting help text recalled typing (question mark) prompt. TC530EV will prompt user initialize LOAD VALUE. Enter "128". Terminate entry with <RETURN>. Initiate conversion typing <RETURN> command prompt. input will sampled data displayed each time <RETURN> pressed TC530EV> prompt. value returned should close 32768. results will approximate until final calibration user. Applications section. different value returned, confirm LOAD VALUE selected confirm that voltage TP5, "REF", 1.0V. Adjust potentiometer necessary. When check-out complete, remove clip lead connection from test point TP5.
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
SETUP SIGNAL CONNECTION DIAGRAM
POWER SUPPLY INPUTS 5.0V ONLY!!!
DB25 RS232 CONNECTOR
VDD+ VDD- VDD+
AUX. POWER SUPPLY
LM385 VOLTAGE REFERENCE (1.0V)
VDD- 2.5V
TC534
VDD- VDD+ 3214+
TC534 SIGNAL INPUT
AUX. POWER SUPPLY TERMINALS
TELCOM TC530EV
USER BREADBOARD AREA
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
TC530/534 DESIGN SOFTWARE
This Excel Windows-based spreadsheet utility allows user quickly calculate values integrator resistor capacitor, autozero reference capacitors, voltage reference. These values calculated based user's choice integration time (which directly affects conversion speed resolution). Insert Designer diskette into drive select OPEN from Excel Windows FILE menu. Select drive double-click TC530EV.XLS. LOAD VALUE reported decimal number, must converted prior use. Select appropriate schematic sheet view finished design. TC53x spreadsheet shipped with example settings 16-bit converter.
10.0 FINAL CALIBRATION TC530EV
reference input TC534 Converter roughly calibrated factory yield usable results "outof-the-box." calibration potentally inexact because nature dual-slope converters. Readers TC53x datasheet will recall that dual-slope conversion principle dependant upon absolute value passive components used; and, measurements made this truly ratiometric with respect reference voltage. long component values reference voltage remain stable during measurement cycle reasonable expectation result conversion indeed directly porportional VREF. absolute value passives voltage reference each contribute scale factor final result. There also scaling errors analog front-end even transducer. Passive components used with TC53x A/D's should chosen with regard such factors noise, dielectric absorbtion, etc. (i.e., metal-film resistors, capacitors) perfectly acceptable "off-the-shelf" values close "exact" values derived calculation. This because reasonable scaling errors final, complete system corrected trimming reference voltage, VREF. Offset Errors present addition gain scaling errors. Typically, offset errors nulled-out software applying known input subtracting difference between known value conversion result. resulting quantity then used offset future conversions. alternative this providing end-user with hardware "Zero Adjust" such potentiometer. with scaling errors, offsets contributed from several sources including gain blocks, buffers, transducers, etc. residual offset errors present TC530EV system included output data. conversion results from TC530EV representative raw, uncorrected data that would rendered typical TC53x system before offset corrections applied. Scaling errors should corrected first, then offsets removed. ten-turn potentiometer provided TC530EV precisely adjusting reference voltage. Final adjustment should made completed system that scaling errors, including those contributed
USING DESIGN SOFTWARE
TC530/534 Designer EXCEL 5.0-based spreadsheet that performs following functions: Calculates values VREF, RINT, CINT based upon user input. Generates initialization byte (LOAD VALUE). This byte reported decimal number must converted user prior use. Generates hardware schematic specified system.
USING SPREADSHEET
Select TC53xx DESIGNER spreadsheet fill parameters shaded box: Enter power supply voltage full scale input voltages unipolar number. example, enter your power supply voltage +5V. similar way, enter your input voltage either +/-3V +3V. Integration Time Guide select Integration time based approximate required converter used throughout your application. Integration times shown maximize 50/60 noise rejection. Note that certain values (those BOLD type face) provide equal rejection both (typically dB). Enter resolution require COUNTS box. 16-bit resolution equals 65536 counts. 15-bit resolution equals 32768 counts, etc. spreadsheet automatically calculates values RINT, CINT, VREF, crystal frequency, initial byte (LOAD VALUE). These values appear shaded areas COMPONENT VALUE block. Enter closest standard component values boxes directly below each one.
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
buffers, gain stages, transducers, passive components, corrected. Calibrating TC53x-based system simply matter adjusting reference voltage while measuring appropriate Reference Input. (Offset errors, opposed scaling gain errors, typically adjusted input stages through software. below. calibrate your TC53x-based system: Apply Reference Input system. This voltage standard applied directly input circuitry instead transducer sensor; known stimuli applied sensor transducer. order expose smallest detectable scaling errors, Reference Input should very near full-scale. difficult calibrate system exactly full-scale since system prone over-ranging during adjustment. While applying appropriate reference input, adjust reference voltage that converter yields correct reading. After compensating scaling errors adjusting VREF, offset errors should nulled-out applying compensating offset software making hardware adjustment such with "Zero Adjust" potentiometer. Steps repeated even greater accuracy. Correcting scaling errors first using Reference Inputs close full scale possible will yield best results with fewest iterations.
10.1 Getting Most TC530EV
TC530EV system designed optimized development platform. This involved certain trade-offs between electrical performance usability. following considerations should applied final system design: Separate ground return paths should used analog digital circuitry. ground planes trace fill analog circuit sections highly recommended EXCEPT around integrator section CREF, CAZ. CINT, CREF, CAZ, RINT Stray capacitance between these nodes ground appears parallel with components themselves affect measurement accuracy. Critical components should chosen stability noise. metal-film resistor RINT Polypropylene capacitors CINT, CAZ, CREF highly recommended. inputs integrator section very high impedance nodes. Leakage from these critical nodes contribute measurement error. guard-ring should used protect integrator section from stray leakage. Circuit assemblies should scrupulously clean prevent presence contamination from assembly, handling, cleaning itself. Minutely conductive trace contaminates, easily ignored most applications, adversely affect performance high impedance circuits. input integrator sections should made compact close TC53x possible.
Table TC530EV Jumper Options Jumper Block
Position
Function
RESERVED SHORTED TC500 factory integration resistor (R6) selected SHORTED TC500 user integration resistor (R5) selected SHORTED TC500 factory integration capacitor (R6) selected SHORTED TC500 user integration capacitor (C15) selected SHORTED TC534 channel configured single-ended operation OPEN TC534 channel configured differential operation SHORTED TC534 channel configured single-ended operation OPEN TC534 channel configured differential operation SHORTED TC534 channel configured single-ended operation OPEN TC534 channel configured differential operation SHORTED TC534 channel configured single-ended operation OPEN TC534 input configured differential operation SHORTED TC53x Microcontroller powered 3.0V from TC55 SHORTED TC53x Microcontroller powered 5.0V from BP1/BP2
Factory Setting
SHORTED OPEN SHORTED OPEN SHORTED SHORTED SHORTED SHORTED OPEN SHORTED
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
Decoupling capacitors, preferably higher value electrolytic tantulum parallel with small ceramic tantalum, should used liberally. This includes bypassing supply connections active components voltage reference. Digital other dynamic signal conductors should kept from TC53x's analog section possible. microcontroller other host logic should kept quiet during measurement cycle. Background activites such keypad scanning, display refreshing, power switching introduce noise.
11.2 TC530EV Test Points
Table describes various test points TC530EV PCB.
11.3 TC530EV Calibration Adjustments
potentiometer located TC530EV purpose calibrating full-scale range TC534 described Table
11.0 HARDWARE REFERENCE 11.1 TC530EV Jumper Options
Table details function factory setting each jumper block. Table TC530EV Test Points Designator
Marking
VDD+ VDD- 2.5V
Description
External power supply input. Must regulated 5.0V. Positive supply rail components except TC2332. Selectable 3.0-5.0V JB1. Negative supply rail components, derived from VDD+ TC534 charge-pump DC-toDC converter. TC534 reference voltage from POT1 wiper terminal. (Referenced ground.) Cathode LM385-2.5 voltage reference associated with TC534. Connected (Pin TC534. oscillator signal injected this point after removing from socket.
Table Calibration Adjustments Designator
Marking
Description
fixed terminals connected between ground LM385-2.5V voltage reference (U4). center terminal (wiper) this potentiometer connected directly TC534's VREF+ input. TC534's VREF input connected ground. functions scale adjustment varying TC534's deintegration rate.
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
11.4 BILL MATERIALS
Name
Semiconductors Capacitors C10, C13, C18, C17, C11, C19, C14, Resistors RP1-8 Electromechanical HDR1 Jumper Post Shunt (Jumper) Test Points BP1, BP2, Socket Socket Socket Miscellaneous
Description
Diode Light Emitting Diode 16-pin 18-pin Customed Programmed Voltage Reference, Fixed 2.5V Xistor 40-pin E.S.R., Ceramic, .01µF Tantalum, Tantalum, Mica, 500V Polyphenylene, Polyphenylene, 18.2 1/8W 10.0 1/4W 1/8W 100.0 1/8W Potentiometer turn, Res. Ntwk. 100K 8-Pin Iso. Config. Header 0.1" Spacing Header 0.1" Spacing Header 0.1" Spacing Shorting Block DPDT Slide Switch CNTRS .150 Terminal Block POS. 300V 25AMP Clip-On Glass Bead Banana Jacks 25-Pin D-Sub Right Angle Connector 16-Pin 18-Pin 40-Pin Crystal Crystal Standoff 4-40 3/4" 4-40 w/Ext. Washer 2-56 Screw 2-56 3/4" Slttd. Breakaway Header
Part
1N5817RL LN28RP TC232CPE Z86E0812 LM385BCZB 2.5V TC55RP3002 TC534CPL SXE50VB10RM4X11LL C322C103K5R5CA T351G106K035AS T351A105K035AS CD15ED470J03 MKI2-.22/63/10 MKI2-.33/63/10 RN55D1822F RN55D1002F RN55D1001F RN55D1003F 3299W-1-103 4608x-102-104 4-103185-0 4-103185-0 4-103185-0 3-530153-2 EG2209 25.163.3253 151-20-100 745992-4 816-AG11D-ES 818-AG11D 840-AG11D-EST ECS-80-20-1 ECS-20-20-1 92700A434 90675A005 91841A003 91792A084 4-103239-0
Mfg.
Motorola Panasonic TelCom Zilog TelCom TelCom TelCom United Chemi-Con Kemet Kemet Kemet Cornell-Dubilier Wima Wima Dale Dale Dale Dale Bourns Bourns E-Switch Weiland Mouser H.H. Smith Augat Augat Augat E.C.S. E.C.S. McMaster McMaster McMaster McMaster
TC530EV-2 3/24/98
EVALUATION TC53x CONVERTERS TC530EV
APPENDIX TC530EV RS-232 COMMUNICATION PARAMETERS
TC530EV supports serial communications from host terminal using following settings. sample sessions guide using TC530EV with specific terminal software. Signalling Levels: RS-232E TC232 Datasheet Connector Type: DB25F, 25-Pin Female Baud Rate: 9600 Duplex: Half Data Format: Data-bits, Stop-bit, Parity Handshaking: None Terminal Emulation: None Standard Character Translation: Carriage Return Carriage Return Line feed
Table Connector Definition
Signal Name
Receive Data Transmit Data Request Send Clear Send Signal Ground
Direction
HOST TC530EV TC530EV HOST HOST TC530EV TC530EV HOST TC530EV HOST
Description
Data input TC530EV Data output from TC530EV supported current software supported current software Ground reference signals
Table TC530EV 9-Pin PC-AT Serial Port Cable Definition TC530EV DB25F Signal Name Direction Description
Data output from TC530EV Data input TC530EV supported current software supported current software Ground reference signals
PC-AT DB9F
Transmit Data TC530EV PC-AT Receive Data PC-AT TC530EV Request Send TC530EV PC-AT Clear Send PC-AT TC530EV Signal Ground TC530EV PC-AT Recommended cable: Belkin Components #F2L088-06
TC530EV-2 3/24/98
TC530EV
VDD+
CTX082-ND
XTAL1 XTAL2 2.5V TC385
VDD-
VDD+
V-OUT DOUT DCLK RESET
TC232
DB25F T1OUT R1IN R2IN T2OUT R2OUT T2IN T1IN R1OUT VDD+
OSCOUT OSCIN CAP+
TC534
RP1-1
TC534
100X VREF+ ACOM VREF- AGND CINT
CAP- CH1+ CH2+ CH3+ CH4+ CH1- CH2- CH3- CH4- CREF+ CREF-
100K RP1-2
CH1+
100K RP1-4 TC5RP3002
CH3+
100K RP1-5
CH4+
CH1-
100K RP1-6
CH2-
100K RP1-7
APPENDIX BOARD SCHEMATIC
100K RP1-8
CH3-
EVALUATION TC53x CONVERTERS
100K
CH4-
LEO1
VDD+
TelCom Semiconductor 1300 Terra Bella Avenue P.O. 7267 Mountain View, 94039-7267 TEL: 650-968-9241 FAX: 650-967-1590 E-Mail: liter@c2smtp.telcom-semi.com
Sales Offices
TC530EV-2 3/24/98
100K RP1-3
CH2+
TelCom Semiconductor Austin Product Center 9101 Burnet Suite Austin, 78758 TEL: 512-873-7100 FAX: 512-873-8236
TelCom Semiconductor H.K. Ltd. Chuk Street, Ground Floor Kong, Kowloon Hong Kong TEL: 852-2324-0122 FAX: 852-2354-9957
Other recent searches
PCA9500 - PCA9500 PCA9500 Datasheet
NJU7507A - NJU7507A NJU7507A Datasheet
LTC2922 - LTC2922 LTC2922 Datasheet
bq29312 - bq29312 bq29312 Datasheet
BAV3004W - BAV3004W BAV3004W Datasheet
AN2864 - AN2864 AN2864 Datasheet
Privacy Policy | Disclaimer
© 2012 Datasheet Archive
