IL26X ETC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

Functional Diagram Features

  • 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/µs Typical Transient Immunity
  • 2 ns Channel to Channel Skew
  • 0.3'' and 0.15'' 16–Pin SOIC Packages
  • Extended Temperature Range (-40°C to +85°C)
  • UL1577 Approval Pending
  • IEC 61010-1 Approval Pending Isolation Applications
  • 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® 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/µs 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 -40°C to +85°C without any derating. High Speed Five Channel Digital Coupler Isoloop® is a registered trademark of NVE Corporation * US Patent number 5,831,426; 6,300,617 and others. 4IN IN 5 3IN 2IN 1IN 1OUT 2OUT 3OUT 4OUT OUT Galvanic Isolation 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 ISOLOOP® 4IN 5IN 3IN 2IN 1IN 1OUT 2OUT 3OUT 4OUT Galvanic Isolation 5OUT IL260 IL261 Preliminary

Recommended Operating Conditions Parameters Symbol Min. Max. Units Ambient Operating Temperature T A -40 85 oC Supply V oltage (5.0 V operation) V DD1,VDD2 4.5 5.5 V olts Logic High Input V oltage V IH 2.4 V DD V olts Logic Low Input V oltage V IL 0 0.8 V olts Minimum Signal Rise and Fall Times t IR,tIF 1 µsec Absolute Maximum Ratings Parameters Symbol Min. Max. Units Storage Temperature T S -55 175 oC Ambient Operating Temperature(1) TA -55 125 oC Supply V oltage V DD1,VDD2 -0.5 7 V olts Input V oltage V I -0.5 V DD+0.5 V olts Output V oltage V O -0.5 V DD+0.5 V olts Output Current Drive Channel I O 10 mA Lead Solder Temperature (10s) 280 oC ESD 2kV Human Body Model Insulation Specifications Parameter Symbol Min Typ. Max. Units Test Condition Barrier Impedance >10 14 ||7 Ω || pF Creepage Distance (External) 8.077 (0.3'' SOIC) mm4.026 (0.15'' SOIC) Leakage Current 0.2 µA 240 V RMS Model Pollution Material Max Working Package Type Degree Group Voltage 16–SOIC (0.3'') 16–SOIC (0.15'') IL260, IL261 II III 300 V RMS 9 IL260-3, IL261-3 II III 150 V RMS 9 IEC61010-1* TUV Certificate Numbers: Pending Classification as Table 1. UL 1577* Component Recognition program. File # Pending Rated 2500Vrms for 1min. * UL & IEC approval is pending for the these parts. 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 ISOLOOP® Package Characteristics Parameter Symbol Min. Typ. Max. Units Test Conditions Capacitance (Input-Output)(5) CI-O 4.0 pF f= 1MHz Thermal Resistance θJCT oC/W Thermocouple located at 0.15'' 16-Pin SOIC 40 center underside of package 0.30'' 16-Pin SOIC 28 Package Power Dissipation P PD 65 mW f= 1MHz ,V DD=5V Preliminary

Electrical Specifications are Tmin to Tmax Parameter Symbol 5.0 Volt Specifications Units Test Condition s DC Specifications Min. Typ. Max. Input Quiescent Supply Current IL260 I DD1 30 40 µA IL261 I DD1 2.5 3.0 mA Output Quiescent Supply Current IL260 I DD2 10 15 mA IL261 I DD2 81 2 m A Logic Input Current I I -10 10 µA Logic High Output V oltage V OH VDD-0.1 V DD VI O =-20 µA, VI =VIH 0.8*VDD VDD-0.5 IO = -4 mA, VI =VIH Logic Low Output V oltage V OL 0 0.1 V I O = 20 µA, VI =VIL 0.5 0.8 IO = 4 mA, VI =VIL Switching Parameters Maximum Data Rate 100 110 MBd C L = 15 pF Minimum Pulse Width PW 10 ns 50% points, V O Propagation Delay Input to Output (High to Low) tPHL 10 15 ns CL = 15 pF Propagation Delay Input to Output (Low to High) t PLH 10 15 ns CL = 15 pF Pulse Width Distortion(2) | tPHL- tPLH | PWD 2 3 ns CL = 15 pF Propagation Delay Skew(3) tPSK 4 6 ns C L = 15 pF Output Rise Time (10-90%) t R 1 3 ns C L = 15 pF Output Fall Time (10-90%) t F 1 3 ns C L = 15 pF Common Mode Transient |CMH| Immunity (Output Logic High 20 30 kV/ µs Vcm = 300V or Logic Low)(4) |CML| Channel to Channel Skew t CSK 2 3 ns C L = 15 pF Dynamic Power Consumption6 170 210 µA/mHz per Channel 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 ISOLOOP® Notes: 1. Absolute Maximum ambient operating temperature means the device will not be damaged if operated under these conditions. It does not guarantee performance. 2. PWD is defined as | t PHL– tPLH |. %PWD is equal to the PWD divided by the pulse width. 3. t PSK is equal to the magnitude of the worst case difference in t PHL and/or tPLH that will be seen between units at 25 O 4. CM H 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 V O < 0.8 V . The common mode voltage slew rates apply to both rising and falling common mode voltage edges. 5. Device is considered a two terminal device: pins 1-8 shorted and pins 9-16 shorted. 6. Dynamic power consumption numbers are calculated per channel. Preliminary

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. 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. 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: 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 ® 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 ® 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 ® coupler is only 3 ns which is ten times better than any optocoupler. Application Notes: PWD% = Maximum Pulse Width Distortion (ns) x 100% Signal Pulse Width (ns) For example: For data rates of 12.5 Mb PWD% = 3 ns x 100% = 3.75%80 ns 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 ISOLOOP® Preliminary

Pin Configurations IL260, IL261 Note: Connected Internally Pins 2 & 8 Pins 9 & 15 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 ISOLOOP® Timing Diagram Legend tPLH Propagation Delay, Low to High tPHL Propagation Delay, High to Low tPW Minimum Pulse Width tR Rise Time tF Fall Time IR Soldering Profile Recommended profile shown. Maximum temperature allowed on any profile is 260° C. Preliminary

0.3'' SOIC-16 Package 0.15'' SOIC-16 Package 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 ISOLOOP® 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 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 Valid Part Numbers Valid Part Numbers Preliminary