JAJSCP8B November 2016 – March 2017 ISO7710
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
The ISO7710 device is a high-performance, single-channel digital isolator. The device uses single-ended CMOS-logic switching technology. The supply voltage range is from 2.25 V to 5.5 V for both supplies, VCC1 and VCC2. When designing with digital isolators, keep in mind that because of the single-ended design structure, digital isolators do not conform to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal lines. The isolator is typically placed between the data controller (that is, μC or UART), and a data converter or a line transceiver, regardless of the interface type or standard.
The ISO7710 device can be used with Texas Instruments' mixed signal microcontroller, CAN transceiver, transformer driver, and low-dropout voltage regulator to create an Isolated CAN Interface as shown below.
To design with this device, use the parameters listed in Table 3.
|Supply voltage, VCC1 and VCC2||2.25 V to 5.5 V|
|Decoupling capacitor between VCC1 and GND1||0.1 µF|
|Decoupling capacitor from VCC2 and GND2||0.1 µF|
Unlike optocouplers, which require components to improve performance, provide bias, or limit current, the ISO7710 device only requires two external bypass capacitors to operate.
The following typical eye diagram of the ISO7710 device indicates low jitter and wide open eye at the maximum data rate of 100 Mbps.