feature

High Speed: Typical 150 Mbps (S-Series)

High temperature: -40°C to +125°C (T series and VE series)

Very high isolation: 6 kVRMS reinforced isolation (VE series)

High operating voltage: 1 kVRMS per VDE V 0884-10 (VE series)

50 kV/μs typical; 30 kV/μs minimum common-mode transient immunity

No carrier or clock for low EMI emissions and susceptibility

1.2mA/channel typical quiescent current

300 ps typical pulse width distortion (S-Series)

100 ps pulse jitter

2 ns channel-to-channel skew

10 ns typical propagation delay

44,000 -year barrier life

Excellent anti-magnetic

VDE V 0884-10 certified; UL 1577 certified

MSOP, SOIC, PDIP and true 8 mm creepage packages

application

board-to-board communication

CANbus

Peripheral interface

logic level translation

Devices included in version 3

IEC 60601-1 medical applications rated at 5 kVRMS

illustrate

NVE's IL700 series of high-speed digital isolators are CMOS devices manufactured by NVE's patented* IsoLoop® spintronic Giant Magnetoresistive (GMR) technology. Unique ceramic/polymer composite barrier provides superior isolation and virtually unlimited barrier life. The IL711S and IL712S are the world's fastest dual channel isolators with a typical data rate of 150 Mbps for both channels. Standard and S grade parts are specified from -40°C to +100°C; "T" and "VE" grade parts have a maximum operating temperature of 125°C. The V-Series version offers a very high isolation voltage package of 6 kVRMS for wide bodies and 2.5 kVRMS for MSOPs. The symmetrical magnetic coupling barrier provides a typical propagation delay of only 10 ns and pulse width distortion as low as 300 ps (0.3 ns), the best specifications of any isolator. Typical transient 50kV/µs immunity is unmatched. The IL711 has two transmit channels; the IL712 and IL721 have one transmit and one receive channel. The IL721 has backchannels that are best suited for certain board layouts. The IL711 and IL712 are available in 8-pin MSOP, SOIC and PDIP packages. The IL711 and IL721 are also available in NVE's unique JEDEC compliant 16-pin package with a true 8mm leakage lower than the International Electrotechnical Commission 60601.

Safety and Approvals

VDE V 0884-10 (VDE V 0884-11 pending)

V-Series (Enhanced Isolation; VDE File No. 5016933-4880-0002)

Operating Voltage (VIORM) 1000 VRMS (1415 VPK); Reinforced Insulation; Pollution Degree 2

Isolation Voltage (VISO) 6000 VRMS

Surge Immunity (VIOSM) 12.8 kVPK

Surge rating 8 kV

Transient Overvoltage (VIOTM) 6000 VPK

Each part is tested at 2387 VPK for 1 second, 5 pC partial discharge limit

Samples were tested at 6000 VPK for 60 seconds; then at 2122 VPK for 10 seconds. Partial discharge limit is 5pc standard version (basic isolation; VDE file no. 5016933-4880-0001)

Working Voltage (VIORM) 600 VRMS ( 848 VPK); Basic Insulation; Pollution Degree 2

Isolation Voltage (VISO) 2500 VRMS

Transient Overvoltage (VIOTM) 4000 VPK

Rated surge voltage 4000 V

Each part is tested at 1590 VPK for 1 second, 5 pC partial discharge limit

Samples were tested at 4000 VPK for 60 seconds; then at 1358 VPK for 10 seconds. Partial discharge limit is 5pc

IEC 61010-1 (2nd Edition; TUV Certificate No. N1502812; N1502812-101) Reinforced Insulation; Pollution Degree II; Material Group III

UL 1577 (Parts Identification Program File No. E207481)

1kV rated standard MSOP is tested at 1200 VRMS (1768 VPK) for 1 second; each batch of samples is tested at 1200 VRMS (1768 VPK) for 1 minute

2.5kV rated components are tested at 3000 VRMS (4240 VPK) for 1 second; each batch of samples is tested at 2500 VRMS (3530 VPK) for 1 minute

VE series parts of 6 kV rated voltage are tested at 7.2 kV (10.2 kV) for 1 second; each batch of samples is tested at 6 kV (8485 kV) for 1 minute

5 Volt Electrical Specifications (from Tmin to Tmax unless otherwise stated)

Note (for 3.3 V and 5 V specifications):

1. The absolute maximum ambient operating temperature means that operating the equipment under these conditions will not damage it. It doesn't guarantee performance.

2. PWD is defined as |tPHL−tPLH|. %PWD is equal to PWD divided by the pulse width.

3. tPSK is the magnitude of the worst-case difference in tPHL and/or tPLH between devices at 25°C.

4.CMH is the maximum common mode voltage slew rate that can be maintained while maintaining VO>0.8vdd2. CML is the maximum common-mode input voltage that can be maintained while keeping VO < 0.8v. The common-mode voltage slew rate applies to two rising common-mode voltage edges falling.

5. The device is considered a two-terminal device: pins 1-4 are shorted and pins 5-8 are shorted.

6. Dynamic power consumption is calculated per channel and is provided by the input side power supply of the channel.

7. The minimum pulse width is the minimum value that guarantees the specified pulse width.

8. See the electromagnetic compatibility section on page 6 for relevant test and measurement methods.

9. External magnetic field immunity is improved by this factor if the magnetic field direction is "end-to-end" instead of "end-to-end" (see diagram on page 6).

10.64k-bit Pseudo-Random Binary Signal (PRBS) NRZ bit pattern, no more than 5 consecutive 1s or 0s; 800 ps conversion time.

application information

Electrostatic Discharge Sensitivity This product has been tested to the limits stated in the specification. However, nv recommends that all integrated circuits be handled with care to avoid damage. Improper handling or storage can cause damage ranging from performance degradation to complete failure.

Electromagnetic Compatibility

The electromagnetic compatibility of IsoLoop isolators is the lowest technology of all isolators. The Wheatstone bridge configuration of the Isolaop isolator with differential magnetic field signals ensures excellent electromagnetic compatibility and performs all relevant standards. These isolators are fully compliant with the general EMC standards EN50081, EN50082-1 and the umbrella line voltage standard Information Technology Equipment (ITE) EN61000. Non-Nuclear Weapons Compliance testing completed by the following categories: EN50081-1 Standard Residential, Commercial and Light Industrial Methods EN55022, EN55014 EN50082-2: Industrial Environmental Methods EN61000-4-2 (ESD), EN61000-4-3 (Electromagnetic Field Immunity ), EN61000-4-4 (electrical transient immunity), EN61000-4-6 (radio frequency interference immunity), EN61000-4-8 (power frequency magnetic field immunity), EN61000-4-9 (pulse Magnetic Field), EN61000-4-10 (Damped Oscillating Magnetic Field) Environmental 50204 Digital Telephone Radiated Field (Immunity Test) If the applied magnetic field direction is "end-to-end" instead of "end-to-end", as shown below

Dynamic power consumption

IsoLoop isolators through the way they transmit data across the isolation barrier. The Wheatstone bridge generates a magnetic field around the GMR by detecting edge transitions of the input logic signal and converting them into narrow current pulses. Depending on the direction field of the magnetic field, the bridge causes the output comparator to switch the input logic signal as follows. Because the current pulse is very narrow at 2.5ns, the power consumption is independent of the mark space ratio and only depends on the frequency. It is evident that the power consumption advantage compared to optocouplers is heavily dependent on the mark-to-space ratio.

Power decoupling

Both power supplies for these devices should be connected with low ESR47NF ceramic capacitors. Ground plane for both GND1 For data rates above 10 Mbps, GND2 is highly recommended. The capacitor must be as close as possible to the VDD pin. Maintaining Creepage In isolated circuits, creepage distances are often critical. In addition to being JEDEC compliant, nv isolator assemblies have unique creepage performance specifications. The standard pad library is usually extended under the package, affecting creepage and clearance. Likewise, if ground planes are used, they should be spaced to avoid affecting the clearance. Package Drawings The recommended land layouts are included in this datasheet. Signal State at Startup and Shutdown To minimize power consumption, the input signal is differentiated and then locked on the output side of the isolation barrier to reconstruct the signal. This can result in ambiguous output states depending on the power-up, power-down, and power-down sequences. Unless the circuit connected to the isolator performs its own power-on reset (POR), a consideration should be given to starting the initialization circuit. Initialization consists of toggling the input either high then low, or low then high. In CAN applications, the IL712 or IL721 should be used with CAN transceivers with a primary timeout function for seamless ports. Most CAN transceivers have primary timeout options. Examples include NXP's TJA1050 and TJA1040 transceivers.

data transfer rate

The reliability of the power transmission system is directly related to the accuracy and quality of the transmitted digital information. For digital systems, these parameters determine the limit of data transmission is pulse width distortion and transmission delay skew. Propagation delay is a measure of the time a signal passes through. When sending a low-to-high ratio than sending a high-to-low signal. This difference or error is called pulse width distortion (PWD) and is usually measured in nanoseconds. It can also be expressed as a percentage:

This figure is almost three times the existing figure for the same temperature range optocoupler than any optocoupler regardless of the published temperature range. The Isolaop isolator exceeds the recommended maximum power by 10% over PROFIBUS and will operate to close to 35mb within the 10% limit. Propagation delay skew is two or more channels. This becomes very important in a clocking system, since the clock pulses are not expected to arrive before the data is stable. Propagation delay skew is especially important in high data rate parallelism to build and maintain accurate and repeatable systems. The worst-case channel-to-channel skew in the IL700 isolator is only 3ns - ten times better than any optocoupler. The IL700 isolator has a maximum propagation delay deviation of 6ns, 5 times that of any optocoupler.

NVE offers a unique line of single-chip isolated RS-485, PROFIBUS, and CAN transceivers, but the IL700 series isolators can also be used as part of a multi-chip design with non-isolated transceivers, as shown in the following circuit:

To reduce susceptibility to electromagnetic interference, especially in high-speed applications, hybrid and electric vehicles, CAN isolation networks are increasingly required, where the 12-volt battery has been replaced with one of several hundred volts. During routine maintenance, it is necessary to connect high-voltage power sources such as batteries to the diagnostic system. As shown in the application, the microcontroller is isolated from the controller area network transceiver via the IL712 or IL721, enabling higher speed and more reliable bus operation by eliminating ground loops and reducing susceptibility to noise and EMI events. Best typical IL712/IL721 propagation delay in the order of 10ns minimizes CAN loop delay and maximizes data rate at any given bus length. This simple circuit works for any transceiver that can have a TxD master timeout, including all current generation transceivers.