ISO7830DW - 8000VPK Reinforced 3-Ch Digital Isolator | TI
部品番号: ISO7830DW ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.5 | $5.50 |
| 10 | $4.95 | $49.50 |
| 100 | $4.4 | $440.00 |
| 500 | $3.95 | $1,975.00 |
| 1,000 | $3.5 | $3,500.00 |
ISO7830DW 概要
A digital isolator is a component that transfers digital signals across an isolation barrier while blocking DC and unwanted AC currents between two ground domains. Digital isolators sit within the broader hierarchy of interface ICs and optocoupler replacements, using capacitive coupling instead of LED-based optocoupling. They are essential in motor drives, power converters, and communication interfaces where galvanic isolation protects low-voltage control circuitry from high-voltage transients.
Key features include a high common-mode transient immunity (CMTI) of 70-100 kV/us, low power consumption (approximately 1.5 mA per channel at 1 Mbps), and a wide supply range of 2.25 V to 5.5 V on both sides. The ISO7830 is certified by VDE, CSA, and TUV for reinforced isolation, and offers a fail-safe output (default low) when the input side is unpowered.
Technically, the ISO7830 uses ON-OFF keying (OOK) modulation across an integrated high-voltage capacitive isolation barrier. This architecture provides immunity to magnetic interference, high-speed transmission, and low propagation delay (typically 10.7 ns). The device operates over the industrial temperature range of -40C to +125C and is offered in tube (DW) and tape-and-reel (DWR) options.
Typical applications include isolated SPI, UART, and GPIO links in industrial automation, motor control, photovoltaic inverters, EV charging stations, and medical equipment. High CMTI and reinforced isolation ratings fit noise-heavy, high-voltage environments.
Design tip: maintain datasheet creepage/clearance on the PCB, keep the area under the barrier free of traces, and decouple both VCC pins with 0.1 uF ceramics close to the pins. Pricing as of 2026-08-30; single-unit price is estimated from distributor quotes and marked for verification.
ドロップイン代替品: ISO7830DW — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ISO7830DW （同一形状・フットプリント） — 相違点: Isolation Technology, Propagation Delay.
クイック比較ツール — 並列比較する代替部品を選択:
ISO7830FDW
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ISO7830DWR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ISO7831DW
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.72 / 個
データシートを見る →ISO7841DW
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
SI8661BD-B-IS
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ADuM260N1BRZ
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ISO7830DW 仕様
| Isolation Rating (VIOWM) | 2000 VRMS |
| Transient Isolation Voltage | 8000 VPK |
| Creepage Distance | 14.5 mm |
| Number of Channels | 3 (3/0 configuration, unidirectional) |
| Maximum Data Rate | 100 Mbps |
| CMTI (Common-Mode Transient Immunity) | 70 kV/us min (100 kV/us typical) |
| Propagation Delay | 10.7 ns typical |
| Supply Voltage Range (VCC1 / VCC2) | 2.25 V to 5.5 V |
| Supply Current per Channel | Approx. 1.5 mA at 1 Mbps |
| Fail-Safe Output | Default low when input side unpowered |
| Isolation Technology | Capacitive (OOK modulation) |
| Reinforced Isolation Certification | VDE, CSA, TUV |
| 動作温度 | -40C to +125C |
| パッケージ | 16-SOIC (DW, 0.295 in / 7.50 mm width) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
ISO7830DW ピン構成
| ピン 1 | VCC1 — Input-side supply, 2.25 V to 5.5 V |
| ピン 2 | GND1 — Input-side ground |
| ピン 3 | INA — Channel A input |
| ピン 4 | INB — Channel B input |
| ピン 5 | INC — Channel C input |
| ピン 6 | NC — No connect |
| ピン 7 | NC — No connect |
| ピン 8 | NC — No connect |
| ピン 9 | OUTC — Channel C output (default low) |
| ピン 10 | OUTB — Channel B output (default low) |
| ピン 11 | OUTA — Channel A output (default low) |
| ピン 12 | NC — No connect |
| ピン 13 | NC — No connect |
| ピン 14 | NC — No connect |
| ピン 15 | GND2 — Output-side ground |
| ピン 16 | VCC2 — Output-side supply, 2.25 V to 5.5 V |
主な用途
ISO7830DW の用途: 6 件s: Motor Drive Control Isolation, Photovoltaic Inverter Signal Isolation, EV Charging Station Communication, Isolated SPI / UART Communication Links, Medical Equipment Patient Isolation, Industrial Automation GPIO Isolation.
Motor Drive Control Isolation
The ISO7830DW's 70-100 kV/us CMTI and 2000 VRMS VIOWM reinforced rating make it ideal for isolating PWM and control signals between the controller and the power stage in motor drives, where fast switching of IGBTs and SiC devices creates extreme dv/dt events. Placed between the MCU GPIO bank and gate-driver logic, it transmits three unidirectional signals at up to 100 Mbps with only 10.7 ns typical delay, preserving PWM timing accuracy. Its capacitive OOK barrier also resists magnetic fields from high motor currents, a weakness of transformer-based alternatives.
おすすめ
Photovoltaic Inverter Signal Isolation
In solar string inverters, the ISO7830DW isolates MPPT control and status signals between low-voltage controller circuitry and the high-voltage DC bus. The 8000-VPK transient rating and 14.5 mm creepage provide the reinforced-isolation headroom demanded by grid-tied safety standards, while its 2.25-5.5 V supply range allows direct interfacing with 3.3 V MPPT MCUs and 5 V supervisory logic. Low per-channel consumption of roughly 1.5 mA at 1 Mbps minimizes self-heating in sealed outdoor enclosures, and the fail-safe default-low output keeps relays de-energized if the input side loses power.
おすすめ
EV Charging Station Communication
DC fast-charging and AC wallbox designs use the ISO7830DW to isolate UART and GPIO handshake signals between the vehicle interface, charge controller, and energy-metering sections. Its 100 Mbps capability far exceeds UART rates, giving margin for heavily filtered, slow-edge links, while the 10.7 ns propagation delay keeps protocol timing deterministic. Reinforced VDE, CSA, and TUV certification simplifies system-level approval for charging equipment, and operation from -40C to +125C covers outdoor charging infrastructure temperature extremes without derating.
おすすめ
Isolated SPI / UART Communication Links
The 3/0 unidirectional channel layout maps naturally onto isolated SPI clock-and-data transmission and unidirectional UART TX isolation. With 100 Mbps data rate and only 10.7 ns typical channel-to-channel skew-limited delay, the ISO7830DW sustains multi-MHz SPI clocks that LED-based optocouplers (typically under 1 Mbps) cannot reach. The default-low fail-safe output prevents bus corruption during input-side power-up or brownout. Designers should route barrier-crossing traces with no copper under the package for full creepage compliance and decouple both VCC pins with 0.1 uF ceramics.
おすすめ
Medical Equipment Patient Isolation
Reinforced isolation with 8000 VPK and VDE/CSA/TUV certification makes the ISO7830DW appropriate for separating patient-connected front ends from powered signal-processing sections in diagnostic and monitoring equipment. The capacitive isolation barrier contributes no LED aging mechanism, so channel timing and immunity remain stable over the device lifetime, an advantage over optocouplers in 24/7 monitoring systems. Its wide 2.25-5.5 V supply range lets the patient-side circuitry run directly from low-voltage battery domains, reducing isolated-supply complexity in battery-powered medical devices.
おすすめ
Industrial Automation GPIO Isolation
PLC I/O modules and industrial sensor interfaces use the ISO7830DW to isolate discrete status and command signals between noisy field wiring and controller logic. The 70 kV/us minimum CMTI prevents false outputs from contactor and VFD transients, while the -40C to +125C industrial range and 8000-VPK reinforced rating satisfy hardened factory-floor requirements. Three unidirectional channels in one wide-body package reduce BOM count versus discrete optocoupler solutions and provide deterministic 10.7 ns delay, enabling faster machine synchronization loops than optocoupler-based designs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ISO7830DW — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ISO7830FDW | ISO7830DWR | ISO7831DW | SI8661BD-B-IS | ADuM260N1BRZ |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (DW, 7.50 mm) | 16-SOIC (DW) - same | 16-SOIC (DW) - same | 16-SOIC (DW) - same | 16-SOIC (150 mil) | 16-SOIC (wide) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Silicon Labs | Analog Devices |
| Isolation Rating | 8000 VPK / 2000 VRMS | 8000 VPK / 2000 VRMS | 8000 VPK / 2000 VRMS | 8000 VPK / 2000 VRMS | 5 kVRMS class | 2500 VRMS class |
| Max Data Rate | 100 Mbps | Higher speed variant | 100 Mbps | 100 Mbps | 150 Mbps | 25 Mbps |
| Supply Range | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.5 V to 5.5 V | 3.0 V to 5.5 V |
主な差別化要因
- Highest reinforced isolation rating in triple-channel class （vs SI8661BD-B-IS)
- Fast variant and tube option share one footprint （vs ISO7830FDW)
- Wide 2.25 V low-side supply support （vs ADuM260N1BRZ)
設計ノート
Maintain the full 14.5 mm creepage under the isolation barrier: keep the PCB area beneath the ISO7830DW completely free of copper, traces, and vias on all layers. Use a milled or routed slot if the end-system standard requires reinforced isolation over pollution degree 2. Do not route high-voltage nets within the datasheet clearance distance of either side's circuitry.
Decouple each VCC pin with a 0.1 uF ceramic capacitor placed within 2 mm of the pin, plus a 1 uF bulk capacitor per side. Because the two ground domains are galvanically isolated, each side needs its own local decoupling network. Supply both sides within the 2.25-5.5 V range; mixing 3.3 V and 5 V domains is fully supported and is a common use case.
The ISO7830DW output is default low when the input side is unpowered, but the ISO7830F variant defaults high - do not interchange the two suffixes in safety-relevant designs without reviewing the fail-safe state. Also note the 3/0 configuration is unidirectional: signal return paths require a separate reverse-channel device such as ISO7841DW, so plan the channel direction map before layout.
コンプライアンス情報
Reinforced isolation certified by VDE, CSA, and TUV per TI product page. REACH and halogen-free status not stated in provided data.
