preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 1/11 FEATURES APPLICATIONS ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Line drivers for 24 V control engineering ♦ Linear scales and encoders ♦ MR sensor systems ♦ ♦ ♦ ♦ 6 current-limited and short-circuit-proof push-pull drivers Differential 3-channel operation selectable Integrated impedance adaption for 30 to 140 Ω lines Wide power supply range from 4 to 40 V 200 mA output current (at VB = 24 V) Low output saturation voltage (< 0.4 V at 30 mA) Compatible with TIA/EIA standard RS-422 Tristate switching of outputs enables use in buses Short switching times and high slew rates Low static power dissipation Dynamic power dissipation reduced with iC-xSwitch Schmitt trigger inputs with pull-down resistors, TTL and CMOS compatible; voltage-proof up to 40 V Thermal shutdown with hysteresis Error message trigger input TNER Open-drain error output NER, active low with excessive chip temperature and undervoltage at VCC or VB Option: Extended temperature range from -40 to 125 °C PACKAGES QFN28 5 x 5 mm² BLOCK DIAGRAM +5V +24V VCC ERROR DETECTION trigger error input enable / tristate NER MODE TNER 1 ENA & PLC error output UNDERVOLTAGE & OVERTEMPERATURE VB1 A1 E1 vert. 8V/div. hor. 2µs/div 1 A2 E2 0 VB2 E3 A3 1 A4 E4 0 VB3 E5 A5 1 A6 E6 0 differential / single ended DIFF normal / x-Switch mode NXS iC-HX iC-xSWITCH CONTROL GND2 GND3 1µF LINE 100 m CX6 1 GND1 Copyright © 2008 iC-Haus CX1 0 1µF GND4 http://www.ichaus.com preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 2/11 DESCRIPTION iC-HX is a fast line driver with six independent channels and integrated impedance adaptation for 30 to 140 Ω lines. Channels are paired for differential 3-channel operation by a high signal at the DIFF input, providing differential output signals for the three inputs E1, E3 and E5. All inputs are compatible with CMOS and TTL levels. The push-pull output stages have a driver power of typically 200 mA from 24 V and are short-circuitproof and current-limited, shutting down with excessive temperature. For bus applications the output stages can be switched to high impedance using input ENA. iC-HX monitors supply voltages VB and VCC and the chip temperature, switching all output stages to high impedance in the event of error and set NER activ low. In addition, the device also monitors voltage differences at the pins VB1, VB2 and VB3 and generates an error signal if the absolut value exceeds 0.75 V. The open-drain output NER allows the device to be wired-ORed to the relevant NER error outputs of other iC-HXs and iC-DLs. Via input TNER the message outputs of other ICs can be extended to generate system error messages. NER switches to high impedance if supply voltage VCC ceases to be applied. The device is protected against ESD. To reduce the dynamic power dissipation in applications with long lines the iC-HX uses the iC-xSwitch. PACKAGES QFN12 to JEDEC Standard PIN CONFIGURATION QFN28 5 x 5 mm2 28 27 26 25 24 23 22 1 21 2 20 3 19 iC−HX 4 18 code... ... 5 6 17 16 15 7 8 9 10 11 PIN FUNCTIONS No. Name Function 1 E1 Input Channel 1 2 E2 Input Channel 2 3 E3 Input Channel 3 4 n.c. 5 E4 Input Channel 4 12 13 14 PIN FUNCTIONS No. Name Function 6 E5 Input Channel 5 7 E6 Input Channel 6 8 VCC +5 V Supply 9 CXS6 Capacitor iC-xSwitch 10 TNER Error Input, low active 11 NER Error Output, active low 12 A6 Output Channel 6 13 GND4 Ground 14 VB3 +4.5 ... 40 V Power Supply 15 A5 Output Channel 5 16 GND3 Ground 17 A4 Output Channel 4 18 VB2 +4.5 ... 40 V Power Supply 19 A3 Output Channel 3 20 GND2 Ground 21 A2 Output Channel 2 22 VB1 +4.5 ... 40 V Power Supply 23 GND1 Ground 24 A1 Output Channel 1 25 NXS Enable iC-xSwitch, low active 26 ENA Enable Input, high active 27 CXS1 Capacitor iC-xSwitch 28 DIFF Differential Mode Input, high active The pins VB1, VB2 and VB3 must be connected to the same driver supply voltage VB. The pins GND1, GND2, GND3 and GND4 must be connected to GND. To improve heat dissipation, the thermal pad at the bottom of the package should be joined to an extended copper area which must have GND potential. preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 3/11 ABSOLUTE MAXIMUM RATINGS Beyond these values damage may occur; device operation is not guaranteed. Absolute Maximum Ratings are no Operating Conditions. Integrated circuits with system interfaces, e.g. via cable accessible pins (I/O pins, line drivers) are per principle endangered by injected interferences, which may compromise the function or durability. The robustness of the devices has to be verified by the user during system development with regards to applying standards and ensured where necessary by additional protective circuitry. By the manufacturer suggested protective circuitry is for information only and given without responsibility and has to be verified within the actual system with respect to actual interferences. Item No. Symbol Parameter Conditions Unit Min. Max. G001 VCC Supply Voltage 0 7 V G002 VBx Driver Supply Voltage VB1, VB2, VB3 0 40 V G003 V() Voltage at E1...6, A1...6, DIFF, ENA, TNER 0 40 V G004 I(Ax) Driver Output Current (x=1...6) -800 800 mA G005 I(Ex) Input Current Driver E1...E6, Diff, ENA, TNER -4 4 mA G006 V(NER) Voltage at NER 0 40 V G007 I(NER) Current in NER -4 25 mA G008 V() ESD Suceptibility at all pins 2 kV G009 Tj Operating Junction Temperature -40 140 °C G010 Ts Storage Temperature Range -40 150 °C HBM 100 pF discharged through 1.5 k Ω THERMAL DATA Operating conditions: VB1. . . 3 = 4.5. . . 40 V, VCC = 4.5. . . 5.5 V or VB1. . . 3 = VCC = 4. . . 5.5 V Item No. Symbol Parameter Conditions Unit Min. T01 Ta Operating Ambient Temperature Range (extended range to -40°C on request) T02 Rthja Thermal Resistance Chip to Ambient Typ. -25 surface mounted, thermal pad soldered to approx. 2 cm² heat sink All voltages are referenced to ground unless otherwise stated. All currents into the device pins are positive; all currents out of the device pins are negative. Max. 125 40 °C K/W preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 4/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VB1...3 = 4.5...32 V, VCC = 4...5.5 V, Tj = -40...140 °C, unless otherwise noted input level lo = 0...0.45 V, hi = 2.4 V...VCC, timing diagram see fig. 1 Item No. Symbol Parameter Conditions Unit Min. Typ. Max. General (x=1..6) 001 VBx Supply Voltage Range (Driver) 40 V 002 I(VBx) Supply Current in VB1...3 Ax = lo 4 8 mA 003 I(VBx) Supply Current in VB1...3 Ax = hi 8 mA 004 I(VBx) Supply Current in VB1, Outputs A1...2 Tri-State ENA = lo, V(A1...2) = -0.3...(VB + 0.3 V) 4 mA 005 I(VBx) Supply Current in VB2...3, Outputs A3...6 Tri-State ENA = lo, V(A3...6) = -0.3...(VB + 0.3 V) 2 mA 006 IO(Ax) Output Leakage Current ENA = lo, V(Ax) = 0 ... VB -50 50 µA 007 VCC Supply Voltage Range (Logic) 4 5.5 V 008 I(VCC) Supply Current in VCC ENA = hi, Ax = lo 10 mA 009 Vc()lo Clamp Voltage low at pins VB1...3, A1...6, E1...6, DIFF, ENA TNER, NER, VCC I() = -10 mA, all other pins open -1.2 0.4 V 010 Vc()hi Clamp Voltage high at pins VB1...3, A1...6, E1...6, DIFF, ENA TNER, NER I() = 1 mA, all other pins open 41 64 V 011 I(VBx) Supply Current in VB1...3 ENA = hi, f(E1...6) = 1 MHz 10 mA V Driver Outputs A1...6, Low-Side-action (x = 1...6) 101 Vs(Ax)lo Saturation Voltage low I(Ax) = 10 mA, Ax = low 0.2 102 Vs(Ax)lo Saturation Voltage low I(Ax) = 30 mA, Ax = low 0.4 V 103 Isc(Ax)lo Short circuit current low V(Ax) = 1.5 V 70 mA 104 Isc(Ax)lo Short circuit current low V(Ax) = VB, Ax = low 105 Rout(Ax) Output resistance VB = 10...40 V, V(Ax) = 0.5 * VB 106 SR(Ax)lo Slew Rate low VB = 40 V, Cl(Ax) = 100 pF 107 Vc()lo Free Wheel Clamp Voltage low I(Ax) = -100 mA 30 50 40 75 800 mA 100 Ohm 200 1000 V/µs -1.4 -0.5 V V Driver Outputs A1...6, High-Side-action (x = 1...6) 201 Vs(Ax)hi Saturation Voltage high Vs(Ax)hi = VB - V(Ax), I(Ax) = -10 mA, Ax = hi 0.2 202 Vs(Ax)hi Saturation Voltage high Vs(Ax)hi = VB - V(Ax), I(Ax) = -30 mA, Ax = hi 0.5 V 203 Isc(Ax)hi Short circuit current high V(Ax) = VB - 1.5 V, Ax = hi -70 -50 -30 mA 204 Isc(Ax)hi Short circuit current high V(Ax) = 0 V, Ax = hi -800 205 Rout(Ax)hi Output resistance VB = 10...40 V, V(Ax) =0.5 * VB 40 75 100 Ohm 206 SR(Ax)hi Slew Rate high VB= 40 V, Cl(Ax) = 100 pF 200 1000 V/µs 207 Vc(Ax)hi Free Wheel Clamp Voltage high I(Ax) = 100 mA, VB = VCC = GND 0.5 1.4 V 12 V mA iC-xSwitch CXS1, CXS6, A1. . . 6, VB1. . . 3 301 VBxs,on Turn-on threshold iC-xSwitch 302 VBxs,off Turn-off threshold iC-xSwitch 11 V 303 VBxs,hys Hysteresis 150 mV 304 Ron() On-resistance iC-xSwitch VBx = 40 V, V(CXSx)= 20 V, I(Ax) = ± 350 mA 7 Ohm 305 Vth(Ax)hi Higher threshold hi VBx = 12. . . 40 V 73 %VB 306 Vth(Ax)lo Higher threshold lo VBx = 12. . . 40 V 63 307 Vth(Ax)hys Higher hysteresis VBx = 12. . . 40 V 100 308 Vtl(Ax)hi Lower threshold hi VBx = 12. . . 40 V 309 Vtl(Ax)lo Lower threshold lo VBx = 12. . . 40 V 30 %VB 310 Vtl(Ax)hys Lower hysteresis VBx = 12. . . 40 V 100 mV %VB mV 40 %VB Switch control 401 tdmin VB = 12. . . 40 V 100 300 ns 402 tXSon(Ax) On-time iC-xSwitch Minumum time for line reflection f(Ex) = 500KHz, td = 800 ns, VB = 12. . . 40 V 400 600 ns 403 tXSon(Ax) On-time iC-xSwitch f(Ex) = 100 KHz, td = 4 µs, VB = 12. . . 40 V 3.2 3.8 µs CXS-generation CXS1, CXS6 200 preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 5/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VB1...3 = 4.5...32 V, VCC = 4...5.5 V, Tj = -40...140 °C, unless otherwise noted input level lo = 0...0.45 V, hi = 2.4 V...VCC, timing diagram see fig. 1 Item No. Symbol Parameter Conditions Unit Min. Typ. Max. 50 501 V() Voltage at CXS1, CXS6 VB = 12. . . 40 V,I(CXSXx)= ± 100 µA 47 53 %VB 502 Isc()lo Short circuit current lo VB = 12. . . 40 V, CXSx = 0 V 2 20 mA 503 Isc()hi Short circuit current hi VB = 12. . . 40 V, CXSx = VB -20 -2 mA 504 Vc()hi Clamp Voltage hi I() = 10 mA, VB = VCC = GND 0.5 1.4 V 505 Vth()hi higher turn-off threshold iCxSwitch VB = 12. . . 40 V 73 %VB 506 Vth()lo higher turn-on threshold iCxSwitch VB = 12. . . 40 V 63 507 Vth()hys Hysteresis Vth()hys = Vth()hi - Vth()lo 100 508 Vtl()hi lower turn-on threshold iCxSwitch VB = 12. . . 40 V 509 Vtl()lo lower turn-off threshold iCxSwitch VB = 12. . . 40 V 30 %VB 510 Vtl()hys Hysteresis Vtl()hys = Vtl()hi - Vtl()lo 100 mV %VB mV 40 %VB Inputs E1...6, DIFF, ENA, TNER 601 Vt()hi Threshold Voltage high 602 Vt()lo Threshold Voltage low 2 603 Vt()hys Input Hysteresis Vt()hys = Vt()hi - Vt()lo 200 800 mV 604 Ipd() Pull-Down-Current V() = 0.8 V 10 80 µA 605 Ipd() Pull-Down-Current V() ≤ 40 V 15 160 µA 606 Il(E1. . . 6) Leakage current at E1. . . 6 ENA = lo -10 10 µA 3.95 V 0.8 V V 400 Supply Voltage Control VB 701 VBon Threshold Value at VB for Under- |VB1 - VB2| & |VB2 - VB3| & |VB1 - VB3| < voltage Detection on 0.75 V 702 VBoff Threshold Value at VB for Under- |VB1 - VB2| & |VB2 - VB3| & |VB1 - VB3| < voltage Detection off 0.75 V 703 VBhys Hysteresis 3 V VBhys = VBon - VBoff 150 mV ∆V(VBx) = MAX (|VB1 - VB2| , |VB2 - VB3| , |VB1 - VB3| ) NER ⇒ low 0.75 Supply Voltage Difference Control VB1...3 801 Vth(VBx) Threshold Condition for Supply Voltage Difference Control 1.85 V 3.95 V Supply Voltage Control VCC 901 VCCon Threshold Value at VCC for Undervoltage Detection on 902 VCCoff Threshold Value at VCC for Undervoltage Detection off 903 VCChys Hysteresis 3 V VCChys = VCCon - VCCoff 100 mV Temperatur Control A01 Toff Thermal Shutdown Threshold increasing temperature 145 175 °C A02 Ton Thermal Lock-on Threshold decreasing temperature 130 165 °C A03 Thys Thermal Shutdown Hysteresis Thys = Ton - Toff I(NER) = 5 mA, NER = lo 4 12 °C Error Output NER B01 Vs() Saturation Voltage low at NER B02 Isc() Short Circuit Current low at NER V(NER) = 2...40 V, NER = lo B03 IO() Leakage Current at NER V(NER) = 0 V...VB, NER = hi -10 B04 VCC Supply Voltage for NER function I(NER) = 5 mA, NER = lo, Vs(NER) < 0.4 V 2.9 6 12 0.4 V 20 mA 10 µA V preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 6/11 OPERATING CONDITIONS Operating Conditions: VB1...3 = 4.5...32 V, VCC = 4...5.5 V, Tj = -40...140 °C, unless otherwise noted input level lo = 0...0.45 V, hi = 2.4 V...VCC, timing diagram see fig. 1 Item No. Symbol Parameter Conditions Unit Min. Max. Time Delays I001 tplh(E-A) Propagation Delay Ex ⇒ Ax DIFF = lo, Cl() = 100 pF 400 ns I002 tphl(E-A) Propagation Delay Ex ⇒ Ax DIFF = lo, Cl() = 100 pF 200 ns I003 ∆tplh(Ax) Differenz der Propagation Delay |A1 ⇒ A2|, |A3 ⇒ A4|, |A5 ⇒ A6| DIFF = hi, Cl() = 100 pF 100 ns I004 ∆tphl(Ax) Differenz der Propagation Delay |A1 ⇒ A2|, |A3 ⇒ A4|, |A5 ⇒ A6| DIFF = hi, Cl() = 100 pF 100 ns I005 tplh(ENA) Propagation Delay ENA ⇒ Ax Ex = hi, DIFF = lo, Cl() = 100 pF, Rl(Ax, GND) = 5 kΩ 300 ns I006 tplh(ENA) Propagation Delay ENA ⇒ Ax Ex = lo, DIFF = lo, Cl() = 100 pF, Rl(VB, Ax) = 100 kΩ 200 ns I007 tphl(ENA) Propagation Delay ENA ⇒ Ax Ex = lo, DIFF = lo, Rl(VB, Ax) = 5 kΩ 500 ns I008 tphl(ENA) Propagation Delay ENA ⇒ Ax Ex = hi, DIFF = lo, Rl(Ax, GND) = 5 kΩ 500 ns I009 tphl(DIFF) Propagation Delay DIFF ⇒ A2, A4, A6 E1, E3, E5 = hi, Cl() = 100 pF 250 ns I010 tplh(DIFF) Propagation Delay DIFF ⇒ A2, A4, A6 E1, E3, E5 = lo, Cl() = 100 pF 400 ns 2 µs 3 µs I011 tplh(TNER) Propagation Delay TNER ⇒ NER Rl(VB, NER) = 5 kΩ, Cl() = 100 pF I012 tpoff(VBx) 0.3 V Input/Output 2.4V 2.0V 0.8V 0.45V t 1 0 Figure 1: Reference levels for delays preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 7/11 DESCRIPTION Line drivers for control engineering couple TTL- or CMOS-compatible digital signals with 24 V systems via cables. The maximum permissible signal frequency is dependent on the capacitive load of the outputs (cable length) or, more specifically, the power dissipation in iC-HX resulting from this. To avoid possible short circuiting the drivers are current-limited and shutdown with excessive temperature. vented by an integrated impedance network, as shown in Figure 3. T iC−HX Eingang iC−HX Ausgang SPS Eingang (100 m Leitung) When the output is open the maximum output voltage corresponds to supply voltage VB (with the exception of any saturation voltages). Figure 2 gives the typical DC output characteristic of a driver as a function of the load. The differential output resistance is typically 75 Ω over a wide voltage range. 40 VE = hi VB = 40 V 36 32 28 V(A)[V] 24 20 16 vert. 8 V/div hor. 2 µs/div Figure 3: Reflections caused by a mismatched line termination During a pulse transmission the amplitude at the iCoutput initially only increases to half the value of supply voltage VB as the internal driver resistance and characteristic line impedance form a voltage divider. A wave with this amplitude is coupled into the line and experiences after a delay a total reflection at the highimpedance end of the line. At this position, the reflected wave superimposes with the transmitted wave and generates a signal with the double wave amplitude at the receiving device. iC−HX EingangT 12 VB = 24 V iC−HX Ausgang 8 4 SPS Eingang (100 m Leitung) 0 0 100 200 300 400 500 180 ns 760 ns vert. 8V/div hor. 500 ns/div −I(A) [mA] Figure 4: Pulse transmission and transit times Figure 2: Load dependence of the output voltage (High-side stage) Each open-circuited input is set to low by an internal pull-down current source; an additional connection to GND increases the device’s immunity to interference. The inputs are TTL- and CMOS-compatible. Due to their high input voltage range, the inputs can also be set to high-level by applying VCC or VB. LINE EFFECTS In PLC systems data transmission using 24 V signals usually occurs without a matched line termination. A mismatched line termination generates reflections which travel back and forth if there is also no line adaptation on the driver side of the device. With rapid pulse trains transmission is disrupted. In iC-HX, however, further reflection of back travelling signals is pre- After a further delay, the reflected wave also increases the driver output to the full voltage swing. iC-HX’s integrated impedance adapter prevents any further reflection and the achieved voltage is maintained along and at the termination of the line. A mismatch between iC-HX and the transmission line influences the level of the signal wave first coupled into the line, resulting in reflections at the beginning of the line. The output signal may then have a number of graduations. Voltage peaks beyond VB or below GND are capped by integrated diodes. By this way, transmisssion lines with a characteristic impedance of between 30 and 140 Ω thus permit correct operation of the device. iC-xSwitch preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 8/11 Power dissipation in the driver occurs with each switching edge when over the double signal run time the internal resistor forms a voltage divider with the characteristic line impedance and is proportional to the length of the connected line and the switching frequency. If the internal resistor is perfectly matched to the characteristic line impedance, the voltage divider generates half the supply voltage at the line input, only supplying the full voltage when an echo occurs. iC-HX exploits this behavior of the open line in order to reduce the power dissipation in the driver. A switch is triggered by applying the halved low-impedance supply voltage, buffered with capacitors, to the line input and terminated by applying the internal resistor shortly before the echo occurs. Power dissipation occurs regardless of the length of the connected line in the time between the application of the resistor to the line and the beginning of the echo. In order to control this process iC-HX must recognize the length of the connected line. The line is measured using an integrated procedure which evaluates the line echo. This principle of power dissipation reduction only functions when a single wave travels along the line. The maximum transmission frequency with a reduced power dissipation is directly proportional to the line length. If the transmission frequency is too high for the line length, iC-xSwitch is no longer used, resulting in increased power dissipation in the driver. The required halved supply voltage is generated internally in the chip and must be buffered by capacitors. On a rising edge current flows from the capacitor into the line and back into the capacitor on a falling edge. With the differential operation of two lines the currents flow from one line to the other and back again. Figure 5 shows the three switches, the integrated resistor to match the characteristic line impedance and the connected line. VB is the positive power supply and VB/2 is the half of it. The control of the switches depends on the input signals of the device and the length of the connected line. With all enable-signals at lo-level the output A is high impedance (tristate). at the beginning (A) and end (B) of the line at intervals t1 to t8. Figure 6 shows operation without iC-Xswitch. Power dissipation PD (HX) occurs at intervals t1 to t4 and t5 to t8. Figure 7 describes operation with iCxSwitch; power dissipation PD (HX) occurs between t3 and t4 and t7 and t8. The mean power dissipation is significant for the warming of the device, which is proportional to the duty cycle. This results in a reduced power dissipation (at the same frequency), meaning there is less power dissipation with a shorter line or through the use of iC-xSwitch with a long line, for example. V(E) V(A) V(B) ENHi ENLo ENxS PD(HX) Time t1 t2 t4 t5 t6 t8 Figure 6: Power dissipation PD (HX) without iCxSwitch V(E) V(A) V(B) ENHi VB ENLo ENHi HiSwitch ENxS Line PD(HX) ENLo LoSwitch xSwitch ENxS VB/2 Time t1 t2 t3 t4 t5 t6 t7 t8 Figure 7: Power dissipation PD (HX) with iC-xSwitch Figure 5: Circuit diagram with switches and line Figures 6 and 7 show the input signal V(E), the switch trigger signals derived from this and the voltage curve An example for the power dissipation is given in figure 8. When xSwitch is not used by setting NXS to high, the iC-HX behaves like the iC-DL. preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 9/11 Power dissipation vs. frequency P [W] VB = 24 V, four channels with 100 m non-terminated lines 7 NXS = low 6 NXS = high 5 Power reduction 4 3 2 1 0 0 100 Figure 8: Power dissipation xSwitch-Mode 200 f [kHz] with and 300 without DEMO BOARD iC-HX is in a QFN28 package and comes with a demo board for test purposes. Figures 9 to 10 shows the wiring and the top of the demo board. Figure 9: Demo-Board ,top view iC-HX preliminary 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 10/11 Figure 10: Circuit diagram of the demo board iC-Haus expressly reserves the right to change its products and/or specifications. An info letter gives details as to any amendments and additions made to the relevant current specifications on our internet website www.ichaus.de; this letter is generated automatically and shall be sent to registered users by email. Copying – even as an excerpt – is only permitted with iC-Haus approval in writing and precise reference to source. iC-Haus does not warrant the accuracy, completeness or timeliness of the specification on this site and does not assume liability for any errors or omissions in the materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or areas of applications of the product. iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade mark rights of a third party resulting from processing or handling of the product and/or any other use of the product. As a general rule our developments, IPs, principle circuitry and range of Integrated Circuits are suitable and specifically designed for appropriate use in technical applications, such as in devices, systems and any kind of technical equipment, in so far as they do not infringe existing patent rights. In principle the range of use is limitless in a technical sense and refers to the products listed in the inventory of goods compiled for the 2008 and following export trade statistics issued annually by the Bureau of Statistics in Wiesbaden, for example, or to any product in the product catalogue published for the 2007 and following exhibitions in Hanover (Hannover-Messe). We understand suitable application of our published designs to be state-of-the-art technology which can no longer be classed as inventive under the stipulations of patent law. Our explicit application notes are to be treated only as mere examples of the many possible and extremely advantageous uses our products can be put to. preliminary iC-HX 3-CHANNEL DIFFERENTIAL COLD LINE DRIVER Rev A1, Page 11/11 ORDERING INFORMATION Type Package Order Designation iC-HX iC-HX Evaluation Board QFN28 5 x 5 mm² iC-HX QFN28 iC-HX EVAL HX2D For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (61 35) 92 92-0 Fax: +49 (61 35) 92 92-192 Web: http://www.ichaus.com E-Mail: [email protected] Appointed local distributors: http://www.ichaus.de/support_distributors.php