IC-Haus iC-WE 24V线路驱动器（英文）.pdfIC-Haus iC-WE 24V线路驱

文件名称: IC-Haus iC-WE 24V线路驱动器（英文）.pdf

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详细说明：IC-Haus iC-WE 24V线路驱动器（英文）pdf,IC-Haus iC-WE 24V线路驱动器（英文）IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 3/10 ABSOLUTE MAXIMUM RATINGS Values beyond which damage may occur; device operation is not guaranteed. Item Parameter Conditions Fig Mi Max G001 VCC Supply Voltage Go02 vb Driver Supply Voltage G003(A) Output Current in A1.3 800 800 mA G004(∈E) Input Current in E1.3, INV, TRI, TNER mA Go05 V(NER)Voltage at NER 32 GO06 (NER)Current in NER 25 mA E001 Vdo ESD Susceptibility MIL-STD-883 Method 3015 HBM at all pins 100 pF discharged through 1.5 kQ TG1 Operating Junction Temperature -40 165 TG2 Ts Storage Temperature Range 40150 THERMAL DATA Operating Conditions: VB=4.5.30V, VCC=5V+ 10% Item Symbol Parameter Conditions g Unit Min. Typ. Max T1Ta Operating Ambient Temperature IC-WE SO16W Range iC-WE SO20, iC-WE TSSOP20 °C xtended range to -40c on request T2Rthja Thermal Resistance SO20 surface mounted with ca 2 cm"heat 45 Chip to Ambient sink at leads(see Demo board) T3Rthja Thermal Resistance SO16W surface mounted with ca 2 cm-heat 75K/ Chip to Ambient sink at leads T4 Thia Thermal Resistance TSSoP20 surface mounted, thermal pad 30 40 K∧W CHip to Ambient soldered to ca. 2 cm heat sink All voltages are referenced to ground unless otherwise noted All currents into the device pins are positive; all currents out of the device pins are negative IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 4/10 ELECTRICAL CHARACTERISTICS Operating Conditions vB=4.5.30V,Vcc=5∨±10%,T=-40.125°c, unless otherwise noted Item Symbol Parameter Condition T] Fig Unit °C Min T Ma Total 001 VCC Permissible Supply Voltage 4.5 55 002I(VCC)Supply Current in VCC 15 80 125 888 21 mA 12 003VB Permissible Driver Supply voltage 30 R 004 I(VB)lo Supply Current in VB A1.3=|0 40 24 86547 12 005 I(VB)hi Supply Current in VB A1.3=hi,(A1.3)=0 40 80 4 7 125 5 mA 006(VB)Tri Supply Current in VB TRI= hi 1.2 TA Outputs Tri-state ∨(A1.3)=-0.3B+03V 40 1.4 mA Driver Outputs A1..3 101 Vs(lo Saturation Voltage lo I(A)=10 mA -40 1.15 V 27 1.05 1.05 102 Vs()lo Saturation Voltage lo I(A)=30 mA 40 1.55 15 103Vs(hi Saturation Voltage hi VsOhi= VB-V(a) 40 (A)=-10mA 27 1.0 80 1.0 125 0.9 104 VsOhi Saturation Voltage hi VsOhI= VB-V(A) 40 145 (A)=30mA 1.4 80 13 105 Isc( Short-Circuit Current hi VB=30V, V(A)=0 300mA 106 Short-Circuit Current lo VB=30VV(A)=VB 500 107Routo Output Impedance VB=30V, V(A)=15V 100 108 SROhi Slew-Rate hi VB=30,CL =100 pF 250 09SROIo Slew-Rate lo VB=30V, CL= 100 pF 1500 1100 Off-State Current TRI= hi, V(A)=0.VB 50 A 111 Vc(hi Clamp Voltage hi VcOhi=V(A)-VB 0.4 1.5 TRI=hi, I(A)=100 mA 112 VcOlo Clamp Voltage lo Tri=hi, I(A)=-100 mA 1.5 0.4 Inputs E1..3 201Vt(hi Threshold Voltage hi 40%VCC Threshold voltage lo %VCC 203 VtOhys Input Hysteresis Whys= vtohi-Vtolo mV IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 5/10 ELECTRICAL CHARACTERISTICS Operating Conditions vB=4.5.30V,Vcc=5∨±10%,T=-40.125°c, unless otherwise noted Item Symbol Parameter Condition T] Fig Unit °C Min T Ma puts E1.3(continued 204pu(0 Pull-Up Current V(E)=0.VCC-1V 280 205 Vc(hi Clamp Voltage hi v(Ehi=V(E)-ˇVcc,|E)=4mA□ 04 125V 206 CoLo Clamp Voltage lo I(E)=-4 mA 07 tp(E-A)Propagation Delay E A 00 300 330 ns 208 4tp(INV Delay Skew E-A for 150 ns INV=O vs. INv= hi Error Detection 301 Turn-on Threshold VCC 4.0 4.49 302VCCoff Undervoltage Threshold at Vcc decreasing Supply VCC 4.30 303 VC Chys Hysteresis VCChys= vcCon-Vccoff 130 mV 304VBon Tumn- on threshold∨B 4.0 4.49 4.6 305VBof Undervoltage Threshold at VB decreasing Supply VB 3.8 4.35 306 VBhys Hysteresis Vbhys =Vbon-VBoff 130 mV 307 VCC Supply voltage vCC for NER 2.6 55 Operation 308 Vs(NER)Saturation Voltage lo at NER I(NER)=5mA 07ⅴ1 309Isc(NER)Short-Circuit Current lo in NER V(NER)=0.30V 5 30 310 IO(NER)Collector Off-State V(NER)=0.30 V 10 Current in ner NeR off or vcc<0.3 v 311Toff Thermal Shutdown threshold 150 175 312Ton Thermal Lock-on Threshold decreasing temperature 12 160 313 Thys Thermal Shutdown Hysteresis Thys=Toff.Ton Mode select INV TRI tNer 401 Vtohi Threshold voltage hi 40%VCC 402Vt()lo Threshold Voltage lo DOVCC 403Vt(hys Input Hysteresis Vtohys=vt( - Volo 40 404 Ipu(Pull-Up Current V()=0.cC-0.8V 100 250 A 405VcOhi Clamp Voltage hi VcOhi=vo-VCC, 10=4 mA 04 1.25 406VcOlo Clamp Voltage lo )=-4mA 1.25 -0.4 407 tpa Propagation Delay TRi-A (A)=1k9 (TRI-A)(A: lo, hi- Tri-State RL(VCC, A)=1 kQ 408tp(Nv-A) Propagation Delay INy-A 409 tP(TNER-Propagation Delay TNER-NER 5 NER IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 6/10 APPLICATIONS INFORMATION Line drivers for automation control equipment connect digital signals with TTL or CMOs levels to 24 V systems via cables. Due to possible short-circuits, the drivers are current-limited and lock out in the event of over temperature The maximum permissible signal frequency depends on the capacitive load of the outputs(cable length)or the consequential power dissipation in the IC-WE Except for saturation voltages, the maximum output vol tage corresponds to supply voltage vb when the output is open. Fig. 1 shows the typical DC output characteristic of a driver as a function of the load. the differential output resistance is about 75 Q in broad ranges Every open-circuited input is set to high level by an internal pull-up current source; an additional inter- 0 connection with vcc enhances the interference 050100150200250300350400450500 immunity. An input can be set to low level in response to a short-circuit or a resistance(<7.5 kQ)to GND Fig. 1: Influence of load on output voltage LINE EFFECTS L CHENpu In PLC systems, data transmission with 24V signals is generally conducted without a line termination with the C-WEO characteristic impedance. A mismatched line end pro- AI duces reflections which travel back and forth if there is no line adapter at the driver end either the transmission is SPC Input(incOm) disrupted in case of high-speed pulse trains In the IC-WE, signal reflection is prevented by an integra- ted characteristic impedance adapter, as shown in Fig. 2 vert, B WdN Fig 2: Reflections due to open line end During a pulse transmission the amplitude at the output of the iC-WE initially only increases to about one half the level of supply voltage VB since the internal resistance of the driver and the line characteristic impedance form a voltage divider. A wave with this amplitude is injected into D i-wEoutput the line and experiences a total reflection at the high impedance end of the line following a delay based on the length of the cable. The open or high impedance [ sPc inpt(re 1ob. terminated end of the line exhibits a voltage maximum 76n with double amplitude since outgoing and reflected wave vert &dn hor. 500 nsdN are superimposed Fig 3: Pulse transmission and transit times Following a further delay the reflected wave also increases the driver output to twice the amplitude of the wave initially injected, possibly capped by the integrated diode suppressor circuit. The integrated characteristic impedance adaption in the iC-WE prevents another reflection and the voltage achieved is maintained along and at the end of the line A mismatch between the iC-We and the line influences the level of the initially injected wave and produces reflections at the driver end. The output signal may have a number of graduations. Nonetheless, lines with characteristic impedances in the range 40 to 150 Q permit satisfactory transmissions Fig 3 shows the transmission of a short pulse of 1.5 us. The signal delay to the end of the cable(here 100 m) is markedly longer than the transit time in the ic-WE driver IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 7/10 EXAMPLE 1: Balanced data transmission over twisted-pair cables For balanced data transmission two ic-We devices can be operated in parallel at the inputs with different programming of the individual INVert input. The oc error outputs ner are linked for the system fault message +5V+24V 只ROR ERROR ER MDDE ERRORIS TRI-STATE sH沿I LINE 100 m PLC CMOS/TTI INPUTS CHAN2 CHANE D1 D2 V+24V s020TiC-WE Fig. 4: Balanced data transmission EXAMPLE 2: Incremental encoder ig. 5 shows the iC-WE being used in an optical encoder system together with the iC-Haus incremental encoder IC-WT The iC-Wt device is an evaluating IC for photodiode arrays used in incremental lengths and angle measuring systems. It preprocesses the sensor signals for transmission with line driver iC-WE. At the receive end the programmable logic controller(PLC)interface can be via optocoupler The preprocessed sensor signals are transmitted over cable by the ic-WE with asymmetrical activation. A high interference immunity is achieved as a result of the high output amplitude and the integrated characteristic adaption of the IC-WE The 24V power supply is conducted over the cable from the Plc end. a voltage regulator generates the 5v supply to the encoder system. It is favourable to use the IC-WD switching regulator device instead of aconventional voltage regulator. This switched-mode power supply IC operates from 8 to 30 V input voltage and contains two 5 V post regulators. Analog and digital devices can thus receive separate supply voltages IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 8/10 The error input tNER on the iC-WE can be utilized to conduct a fault signal from the incremental encoder to the output Ner and then to the receiver For protection against voltage peaks from the cable, the state input tRi is wired to the rc combination R1, R2 and C5, which can be dimensioned for levels of up to 30 V at the Plc Incremental Line Drlver IC-WE Control wlth Encoder jC-WT opto-coupler input vok Regultor 100nF TNER MODE氏RoR TACKA iC-WT s TRACK B 工 A 4714-17 80 ko GND Fig. 5: Line driver iC- We in the incremental encoder PRINTED CIRCUIT BOARD LAYOUT The iC-WEs8 GND terminals (pins 4-7 and 14-17) simultaneously function as thermal conductors and must be soldered to copper tracks with the greatest possible area of the PCb to ensure proper heat dissipation Blocking capacitors to smooth the local IC supply voltages must be connected to VCC, VB and GNd pins at the about 3 cm away from the other ICs. C3 should not be less than 1 uF in order to block the 24 V supp ore than shortest possible intervals. C1 on the regulator in Fig. 3 is only necessary if the voltage regulator is me IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1, Page 9/10 DEMO BOARD The device iC-WE with So20 package is equipped with a Demo board for test purposes. Figures 6 to 8 show the wiring as well as the top and bottom layout of the test PCB IF/40V TNER MODF FRROR NER L。W! VOLTAGE T. SHUTCOWN CHAN2 CND Fig 6: Schematic diagram of the Demo Board 4,5U.5.5v 品R 4.5U30 4.U.5.5 4.5U,30U CC CC IC2 E3 Fode ft E3 E2 INV H NU Haus TRI IC-WE C-WE Leitungstr ember Lel tungstreiber GND GNO GND GND GND GNO C-LE1A【o Fig. 7: Demo Board(components side) Fig 8: Demo Board(solder dip side This specification is for a newly developed product. ic-Haus therefore reserves the right to modify data without further notice. Please contact s to ascertain the current data. The data specified is intended solely for the purpose of product description and is not to be deemed guaranteed in a legal sense. Any claims for damage against us- regardless of the legal basis- are excluded unless we are guilty of premeditation or gross negligence We do not assume any guarantee that the specified circuits or procedures are free of copyrights of third parties Copying-even as an excerpt- is only permitted with the approval of the publisher and precise reference to source IC-WE 3-CHANNEL 75Q LINE DRIVER cHAus Rev d1. Page 10/10 ORDERING INFORMATION e Package Order designation IC-WE SO20 IC-WE SO20 SO16W IC-WE SO16W TSSOP20tp 4.4 mm iC-WE TSSOP20 WE Demo board WE DEMO For information about prices, terms of delivery, options for other case types, etc, please contact iC-Haus gmbh Te|+49-6135-9292-0 Am Kuemmerling 18 FaX+496135-9292-192 D-55294 Bodenheim http:/www.ichaus.com GERMANY

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