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| Preliminary Functional Diagram IL260 1IN Galvanic Isolation IL26X ISOLOOP(R) High Speed Five Channel Digital Coupler Features 1OUT 2OUT 3OUT 4OUT 5OUT 2IN 3IN 4IN 5IN * 5V CMOS/TTL Compatible * High Speed: 110 MBaud * 2500 VRMS Isolation (1 min) * 2 ns Typical Pulse Width Distortion * 4 ns Typical Propagation Delay Skew * 10 ns Typical Propagation Delay * 30 kV/s Typical Transient Immunity * 2 ns Channel to Channel Skew * 0.3'' and 0.15'' 16-Pin SOIC Packages * Extended Temperature Range (-40C to +85C) * UL1577 Approval Pending * IEC 61010-1 Approval Pending Isolation Applications IL261 1IN Galvanic Isolation 1OUT 2OUT 3OUT 4OUT 5IN 2IN 3IN 4IN 5OUT * ADCs and DACs * Multiplexed Data Transmission * Data Interfaces * Board-To-Board Communication * Digital Noise Reduction * Operator Interface * Ground Loop Elimination * Peripheral Interfaces * Parallel Bus * Logic Level Shifting * Plasma Displays Description NVE's family of high-speed digital isolators are CMOS devices created by integrating active circuitry and our GMR-based and patented* IsoLoop(R) technology. The IL260 and IL261 are five channel versions of the world's fastest digital isolator with a 110 Mbaud data rate. These devices provide the designer with the most compact isolated logic devices yet available. All transmit and receive channels operate at 110 Mbd over the full temperature and supply voltage range. The symmetric magnetic coupling barrier provides a typical propagation delay of only 10 ns and a pulse width distortion of 2 ns achieving the best specifications of any isolator device. Typical transient immunity of 30 kV/s is unsurpassed. The IL260 has five transmit channels, while the IL261 has four transmit channels and one receive channel. Their high channel density make them ideally suited to isolating multiple ADCs and DACs, parallel buses and peripheral interfaces. Performance is specified over the temperature range of -40C to +85C without any derating. Isoloop(R) is a registered trademark of NVE Corporation * US Patent number 5,831,426; 6,300,617 and others. RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com IL26X Parameters Storage Temperature Supply Voltage Input Voltage Output Voltage Output Current Drive Channel ISOLOOP(R) Preliminary Symbol TS TA Min. -55 -55 -0.5 -0.5 -0.5 Max. 175 125 7 VDD+0.5 VDD+0.5 10 280 2kV Human Body Model Units o C o Absolute Maximum Ratings Ambient Operating Temperature(1) C VDD1,VDD2 VI VO IO Volts Volts Volts mA o Lead Solder Temperature (10s) ESD C Recommended Operating Conditions Parameters Ambient Operating Temperature Supply Voltage (5.0 V operation) Logic High Input Voltage Logic Low Input Voltage Minimum Signal Rise and Fall Times Symbol TA VDD1,VDD2 VIH VIL tIR,tIF Min. -40 4.5 2.4 0 Max. 85 5.5 VDD 0.8 1 Units o C Volts Volts Volts sec Insulation Specifications Parameter Barrier Impedance Creepage Distance (External) Leakage Current Symbol Min 8.077 (0.3'' SOIC) 4.026 (0.15'' SOIC) 0.2 Typ. Max. >1014 ||7 Units mm A 240 VRMS Test Condition || pF Package Characteristics Parameter Capacitance (Input-Output)(5) Thermal Resistance 0.15'' 16-Pin SOIC 0.30'' 16-Pin SOIC Package Power Dissipation Symbol CI-O JCT Min. Typ. 4.0 40 28 65 Max. Units pF o C/W Test Conditions f= 1MHz Thermocouple located at center underside of package f= 1MHz ,VDD=5V PPD mW IEC61010-1* TUV Certificate Numbers: Pending Classification as Table 1. Model IL260, IL261 IL260-3, IL261-3 Pollution Degree II II Material Group III III Max Working Voltage 300 VRMS 150 VRMS Package Type 16-SOIC (0.3'') 16-SOIC (0.15'') UL 1577* Component Recognition program. File # Pending Rated 2500Vrms for 1min. * UL & IEC approval is pending for the these parts. 2 RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com Preliminary Electrical Specifications Electrical Specifications are Tmin to Tmax Parameter DC Specifications Input Quiescent Supply Current IL260 IL261 Output Quiescent Supply Current IL260 IL261 Logic Input Current Logic High Output Voltage Symbol IDD1 IDD1 IDD2 IDD2 II VOH 0.8*VDD Logic Low Output Voltage Switching Parameters Maximum Data Rate Minimum Pulse Width Propagation Delay Input to Output (High to Low) Propagation Delay Input to Output (Low to High) Pulse Width Distortion | tPHL- tPLH | (2) IL26X Units Test Conditions A mA mA mA A V IO =-20 A, VI =VIH IO = -4 mA, VI =VIH 0 0.1 V IO = 20 A, VI =VIL IO = 4 mA, VI =VIL 110 MBd ns 15 15 3 6 3 3 ns ns ns ns ns ns kV/s 3 210 ns A/mHz CL = 15 pF 50% points, VO CL = 15 pF CL = 15 pF CL = 15 pF CL = 15 pF CL = 15 pF CL = 15 pF Vcm = 300V CL = 15 pF per Channel 0.8 100 30 2.5 10 8 40 3.0 15 12 10 VDD ISOLOOP(R) 5.0 Volt Specifications Min. Typ. Max. -10 VDD-0.1 VDD-0.5 0.5 VOL PW tPHL tPLH PWD tPSK tR tF |CMH| 20 |CML| tCSK 10 10 10 2 4 1 1 30 2 170 Propagation Delay Skew(3) Output Rise Time (10-90%) Output Fall Time (10-90%) Common Mode Transient Immunity (Output Logic High or Logic Low)(4) Channel to Channel Skew Dynamic Power Consumption6 Notes: 1. Absolute Maximum ambient operating temperature means the device will not be damaged if operated under these conditions. It does not guarantee performance. PWD is defined as | tPHL- tPLH |. %PWD is equal to the PWD divided by the pulse width. tPSK is equal to the magnitude of the worst case difference in tPHL and/or tPLH that will be seen between units at 25OC. CMH is the maximum common mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDD. CML is the maximum common mode input voltage that can be sustained while maintaining VO < 0.8 V. The common mode voltage slew rates apply to both rising and falling common mode voltage edges. Device is considered a two terminal device: pins 1-8 shorted and pins 9-16 shorted. Dynamic power consumption numbers are calculated per channel. 2. 3. 4. 5. 6. 3 RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com IL26X Application Notes: ISOLOOP(R) Preliminary Data Transmission Rates The reliability of a transmission system is directly related to the accuracy and quality of the transmitted digital information. For a digital system, those parameters which determine the limits of the data transmission are pulse width distortion and propagation delay skew. Propagation delay is the time taken for the signal to travel through the device. This is usually different when sending a low-to-high than when sending a high-to-low signal. This difference, or error, is called pulse width distortion (PWD) and is usually in ns. It may also be expressed as a percentage: PWD% = Maximum Pulse Width Distortion (ns) Signal Pulse Width (ns) For example: For data rates of 12.5 Mb PWD% = 3 ns 80 ns x 100% = 3.75% x 100% Dynamic Power Consumption Isoloop devices achieve their low power consumption from the manner by which they transmit data across the isolation barrier. By detecting the edge transitions of the input logic signal and converting these to narrow current pulses, a magnetic field is created around the GMR Wheatstone bridge. Depending on the direction of the magnetic field, the bridge causes the output comparator to switch following the input logic signal. Since the current pulses are narrow, about 2.5ns wide, the power consumption is independent of mark-to-space ratio and solely dependent on frequency. This has obvious advantages over optocouplers whose power consumption is heavily dependent on its on-state and frequency. The approximate power supply current per channel for Power Supply Decoupling Both power supplies to these devices should be decoupled with low ESR 100 nF ceramic capacitors. For data rates in excess of 10MBd, use of ground planes for both GND1 and GND2 is highly recommended. Capacitors should be located as close as possible to the device. This figure is almost three times better than for any available optocoupler with the same temperature range, and two times better than any optocoupler regardless of published temperature range. The IsoLoop(R) range of isolators will run at almost 35 Mb before reaching the 10% limit. Propagation delay skew is the difference in time taken for two or more channels to propagate their signals. This becomes significant when clocking is involved since it is undesirable for the clock pulse to arrive before the data has settled. A short propagation delay skew is therefore critical, especially in high data rate parallel systems, to establish and maintain accuracy and repeatability. The IsoLoop(R) range of isolators all have a maximum propagation delay skew of 6 ns, which is five times better than any optocoupler. The maximum channel to channel skew in the IsoLoop(R) coupler is only 3 ns which is ten times better than any optocoupler. Signal Status on Start-up and Shut Down To minimize power dissipation, the input signals are differentiated and then latched on the output side of the isolation barrier to reconstruct the signal. This could result in an ambiguous output state depending on power up, shutdown and power loss sequencing. Therefore, the designer should consider the inclusion of an initialization signal in his start-up circuit. Initialization consists of toggling each channel either high then low or low then high, depending on the desired state. Electrostatic Discharge Sensitivity This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all integrated circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could range from performance degradation to complete failure. 4 RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com Preliminary Applications: Figure 1 Single Channel Bridge Bias Delta Sigma A/D CS5532 IL26X ISOLOOP(R) Bridge + Bridge Isolation Boundary Figure 1 shows a typical single channel ADC application. The A/D is located on the bridge with no signal conditioning electronics between the bridge sensor and the ADC. In this application, the IL717 is the best choice for isolation. It isolates the control bus from the microcontroller. The system clock is located on the isolated side of the system. Serial Data Out Serial Data In Data Clock Chip Select Iso SD Out Iso DS In Iso Data Clock Iso CS Clock Generator OSC 2 IL717 Figure 2 Multi Channel Bridge Bias Delta Sigma A/D CS5532 Bridge + Bridge - Isolation Boundary Serial Data Out Serial Data In Data Clock Chip Select Channel #1 Iso SD Out Iso DS In Iso Data Clock Iso CS Clock Generator The second application is where multiple ADC's are configured in a channel-to-channel isolation configuration. The problem for designers is how to control clock jitter and edge placement accuracy of the system clock for each ADC. The best solution is to use a single clock on the system side and distribute this to each ADC. The IL261 adds a 5th channel to the IL717. This 5th channel is used to distribute a single, isolated clock to multiple ADC's as shown in Figure 2. IL261 OSC 2 Bridge Bias Delta Sigma A/D CS5532 Bridge + Bridge - Serial Data Out Serial Data In Channel #n Data Clock Chip Select Iso SD Out Iso DS In Iso Data Clock Iso CS IL261 OSC 2 5 RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com IL26X IL260 ISOLOOP(R) Preliminary IL261 Pin Configurations IL260, IL261 Note: Connected Internally Pins 2 & 8 Pins 9 & 15 5 5 5 5 Timing Diagram Legend tPLH tPHL tPW tR tF Propagation Delay, Low to High Propagation Delay, High to Low Minimum Pulse Width Rise Time Fall Time IR Soldering Profile Recommended profile shown. Maximum temperature allowed on any profile is 260 C. 6 RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com Preliminary 0.3'' SOIC-16 Package IL26X ISOLOOP(R) 0.15'' SOIC-16 Package Valid Part Numbers Ordering Information: use the following format to order these devices IL 260 -3 B TR13 Bulk Package Blank = Tube TR7 = 7'' Tape and Reel TR13 = 13'' Tape and Reel Supply Voltage B = 5.0 VDC Package Blank = SOIC (0.3'') -3 = SOIC (0.15'') Base Part Number 260 = 5 drive channels 261 = 4 drive and 1 receive channels Product Family IL = Isolators Valid Part Numbers IL 260B IL 260-3B IL 260BTR13 IL 260-3BTR13 IL 260-3BTR7 IL 261B IL 261-3B IL 261BTR13 IL 261-3BTR13 IL 261-3BTR7 7 RHOPOINT COMPONENTS Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com |
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