Dual-channel, 2/0, 25-Mbps digital isolator
Product details
Parameters
Package | Pins | Size
Features
- 1, 5, 25, and 150-Mbps Signaling Rate Options
- Low Channel-to-Channel Output Skew; 1-ns Max
- Low Pulse-Width Distortion (PWD); 1-ns Max
- Low Jitter Content; 1 ns Typ at 150 Mbps
- 50 kV/µs Typical Transient Immunity
- Operates with 2.8-V (C-Grade), 3.3-V, or 5-V Supplies
- 4-kV ESD Protection
- High Electromagnetic Immunity
- –40°C to +125°C Operating Range
- Typical 28-Year Life at Rated Voltage (see High-Voltage Lifetime of the ISO72x Family of Digital Isolators and Isolation Capacitor Lifetime Projection)
- Safety-Related Certifications
- VDE Basic Insulation with 4000-VPK VIOTM, 560 VPK VIORM per DIN VDE V 0884-11:2017-01 and DIN EN 61010-1 (VDE 0411-1)
- 2500 VRMS Isolation per UL 1577
- CSA Approved for IEC 60950-1 and IEC 62368-1
Description
The ISO7220x and ISO7221x family devices are dual-channel digital isolators. To facilitate PCB layout, the channels are oriented in the same direction in the ISO7220x and in opposite directions in the ISO7221x. These devices have a logic input and output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000 VPK per VDE. Used in conjunction with isolated power supplies, these devices block high voltage and isolate grounds, as well as prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.
A binary input signal is conditioned, translated to a balanced signal, then differentiated by the capacitive isolation barrier. Across the isolation barrier, a differential comparator receives the logic transition information, then sets or resets a flip-flop and the output circuit accordingly. A periodic update pulse is sent across the barrier to ensure the proper dc level of the output. If this dc-refresh pulse is not received every 4 µs, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state.
The small capacitance and resulting time constant provide fast operation with signaling rates available from 0 Mbps (DC) to 150 Mbps (The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps). The A-option, B-option, and C-option devices have TTL input thresholds and a noise filter at the input that prevents transient pulses from being passed to the output of the device. The M-option devices have CMOS VCC/2 input thresholds and do not have the input noise filter and the additional propagation delay.
The ISO7220x and ISO7221x family of devices require two supply voltages of 2.8 V (C-Grade), 3.3 V, 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 2.8-V or 3.3-V supply and all outputs are 4-mA CMOS.
The ISO7220x and ISO7221x family of devices are characterized for operation over the ambient temperature range of –40°C to +125°C.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
DIGI-ISO-EVM is an evaluaiton module used to evaluate any of the TI signle-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin NB SOIC (D), 8-pin WB SOIC (DWV), 16-pin WB SOIC (DW), 16-pin ultra WB SOIC (DWW) and 16-pin QSOP (...)
Features
- Any TI digital isolator can be evaluated
- Supports single-channel, dual-channel, triple-channel, quad-channel and six-channel devices
- Supports D, DWV, DW, DWW and DBQ packages
- Various Berg pins provided for easy testing
Description
This evaluation module (EVM) is used for testing the parametrics of the factory installed ISO7421 dual channel isolator. The EVM may be reconfigured by the user for use with any of the ISO7220X, ISO7221X or ISO742X dual channel isolators.
Features
- 1,5,25 and 150-Mbps Signaling Rate Options
- Typical 25 Year life at Rated Voltage
- 4000Vpeak Isolation, 560Vpeak Viorm
-Low Channel-to-Channel Output Skew; 1 ns max
-Low Pulse Width Distortion (PWD); 1 ns max
-Low Jitter Content: 1 ns Typ at 150Mbps
- UL 1577, IEC 60747-5-2 VDE 0884, Rev 2), IEC 61010-1 (...)
Description
TMDSCNCD280049C is an HSEC180 controlCARD based evaluation and development tool for the C2000™ F28004x series of microcontroller products. controlCARDs are ideal to use for initial evaluation and system prototyping. controlCARDs are complete board-level modules that utilize one of two standard form (...)
Features
Hardware Features
- Isolated on-board XDS100v2 USB-to-JTAG debug probe enables real-time in-system programming and debugging
- Standard 180-pin controlCARD HSEC interface
- Analog I/O, digital I/O and JTAG signals at card interface
- Hardware Files are in C2000Ware at boards\controlCARDs\TMDSCNCD280049C
Software (...)
Description
TMDSCNCD28379D is an HSEC180 controlCARD based evaluation and development tool for the F2837xD, F2837xS, and F2807x series in the TI MCU. controlCARDs are ideal to use for initial evaluation and system prototyping. controlCARDs are complete board-level modules that utilize one of two standard (...)
Features
Hardware Features
- TMDSCNCD28379D: TMS320F28379D HSEC180 based controlCARD
- Isolated XDS100v2 USB-to-JTAG Debug Probe enables real-time in-system programming and debugging
- Standard 180-pin HSEC interface
- Analog I/O, digital I/O and JTAG signals at card interface
- USB Host connector
- SDCard Slot
- Hardware Files (...)
Description
The DesignDRIVE Development Kit (IDDK) hardware offers an integrated servo drive design with full power stage to drive a high voltage three-phase motor and eases the evaluation of a range of position feedback, current sensing and control topologies.
The sensing peripherals on the C2000™ MCU (...)Features
- Supports the DesignDRIVE fast current loop
- Supports the DesignDRIVE position manager technology - EnDat22, BiSS-C, Tamagawa T-format, SIN/COS, resolver and incremental encoders
- EtherCAT™ slave stack solution with TMDSCNCD28388D or TMDSECATCNCD379D controlCARD upgrade as well as expansion support (...)
Design tools & simulation
Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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