ADUM3152BRSZ - 7-Ch 3.75kV SPI Digital Isolator | Analog Devices
部品番号: ADUM3152BRSZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $9.27 | $9.27 |
| 10 | $8.34 | $83.40 |
| 100 | $7.42 | $742.00 |
| 500 | $6.58 | $3,290.00 |
| 1,000 | $5.81 | $5,810.00 |
ADUM3152BRSZ 概要
A digital isolator is a semiconductor device that transfers digital signals across an isolation barrier using chip-scale transformers, giant magnetoresistance (GMR), or capacitive coupling rather than optical means. The device category sits within the broader hierarchy: digital isolator -> galvanic isolator -> interface IC -> signal conditioning IC -> integrated circuit. Compared to legacy optocouplers, iCoupler technology delivers 10x-100x faster propagation delay, lower power consumption, tighter channel-to-channel matching, and no LED-degradation aging effects.
Key features include 3.75 kVrms reinforced isolation per UL 1577, four high-speed SPI dedicated channels (CLK, MO/SI, MI/SO, SS) plus three low-speed auxiliary channels with 1/2 channel directionality, and 3.0 V to 5.5 V operation on both VDD1 and VDD2 supplies. The 25 kV/µs CMTI rating ensures signal integrity in noisy motor-drive and power-conversion environments where fast switching transients are common.
The ADUM3152BRSZ uses Analog Devices' proprietary iCoupler chip-scale transformer technology to transmit data across the isolation barrier. An on-chip oscillator and refresh circuit regenerate clean edges on the secondary side, achieving channel-to-channel skew below 3 ns and jitter below 1 ns RMS. This timing precision is essential for SPI masters that rely on matched setup/hold windows across multiple slaves.
Typical applications include isolated SPI interfaces for industrial motor drives, isolated data acquisition front-ends, isolated gate-driver signal paths for IGBT/MOSFET power stages, isolated sensor readouts in process control, and medical equipment patient-isolated data links. Designers also use it as a drop-in upgrade for older optocoupler-based SPI isolation where higher throughput is required.
When designing with this part, place 0.1 µF ceramic bypass capacitors as close as possible to both VDD1 and VDD2 pins, and route the high-speed SPI traces as 50 Ω microstrip with ground reference intact on both sides of the barrier. Confirm that the auxiliary channel direction configuration (1-of-2 forward vs 2-of-1 reverse) matches your design before PCB layout is frozen.
This page synthesizes distributor pricing snapshots, verified drop-in same-family alternatives, and practical design notes not consolidated on the manufacturer datasheet front page.
ドロップイン代替品: ADUM3152BRSZ — 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: ADUM3152BRSZ （同一形状・フットプリント） — 相違点: Package, Data Rate, Number of Channels, Propagation Delay, RoHS Status.
クイック比較ツール — 並列比較する代替部品を選択:
ADUM3153BRSZ
✅ ドロップイン✓ 在庫あり
$3.35 / 個
データシートを見る →ADUM3151BRSZ
✅ ドロップイン✓ 在庫あり
$7.8 / 個
データシートを見る →ADUM3150BRSZ
✅ ドロップイン✓ 在庫あり
$4.16 / 個
データシートを見る →ADUM3154BRSZ
✅ ドロップイン✓ 在庫あり
$3.1 / 個
データシートを見る →ADUM3155BRSZ
✅ ドロップイン✓ 在庫あり
$3.16 / 個
データシートを見る →ISO7762DBQR
✅ ドロップイン✓ 在庫あり
$1.25 / 個
データシートを見る →ADUM3152BRSZ 仕様
| Isolation Type | Digital Isolator (iCoupler chip-scale transformer) |
| 機能 | SPIsolator - 7-channel isolated SPI interface |
| Number of Channels | 7 |
| Channel Configuration | 4 SPI dedicated (CLK, MO/SI, MI/SO, SS) + 3 auxiliary, 1/2 forward directionality |
| Isolation Voltage (RMS) | 3750 Vrms |
| Maximum Data Rate | 34 Mbps |
| Maximum SPI Clock Frequency | 17 MHz |
| Propagation Delay | 14 ns (typical) |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs (minimum) |
| Supply Voltage (VDD1, VDD2) | 3.0 V to 5.5 V |
| パッケージ | 20-pin SSOP (0.209" / 5.30 mm width) |
| 実装タイプ | Surface Mount |
| 動作温度範囲 | -40°C to +125°C |
| RoHS Compliance | Compliant |
| Lead-Free | Yes |
| MSLレベル | 1 (per JEDEC J-STD-020) |
| UL 1577 Recognition | Reinforced insulation per UL 1577 |
ADUM3152BRSZ ピン構成
| ピン 1 | VDD1 — Supply voltage for side 1 (3.0 V to 5.5 V) |
| ピン 2 | GND1 — Ground reference for side 1 |
| ピン 3 | VI1 — Logic input, channel 1 (auxiliary) |
| ピン 4 | VO1 — Logic output, channel 1 (auxiliary) |
| ピン 5 | VI2 — Logic input, channel 2 (auxiliary) |
| ピン 6 | VO2 — Logic output, channel 2 (auxiliary) |
| ピン 7 | NC — Not connected (per datasheet) |
| ピン 8 | GND1 — Ground reference for side 1 (second bond) |
| ピン 9 | CLK (VI) — SPI clock input |
| ピン 10 | MO/SI (VO) — SPI master-out / slave-in output |
| ピン 11 | NC — Not connected (per datasheet) |
| ピン 12 | GND2 — Ground reference for side 2 |
| ピン 13 | VDD2 — Supply voltage for side 2 (3.0 V to 5.5 V) |
| ピン 14 | NC — Not connected (per datasheet) |
| ピン 15 | SS (VI) — SPI slave-select input |
| ピン 16 | MI/SO (VO) — SPI master-in / slave-out output |
| ピン 17 | NC — Not connected (per datasheet) |
| ピン 18 | GND2 — Ground reference for side 2 (second bond) |
| ピン 19 | DISABLE — Disable pin (active high) |
| ピン 20 | GND2 — Ground reference for side 2 (third bond) |
主な用途
ADUM3152BRSZ の用途: 6 件s: Isolated SPI Interface for Industrial Motor Drives, Isolated Data Acquisition Front-Ends, Isolated Gate-Driver Signal Paths for Power Converters, Medical Equipment Patient-Isolated Data Links, Isolated Sensor Readout in Process Control, PLC and Industrial Communication Bus Isolation.
Isolated SPI Interface for Industrial Motor Drives
The ADUM3152BRSZ is purpose-built for isolated SPI in 3-phase motor-drive platforms where the MCU control board must be galvanically isolated from the high-voltage inverter stage. With 3750 Vrms isolation, 25 kV/µs CMTI, and 17 MHz SPI clock support, the part handles encoder feedback, gate-driver SPI configuration, and isolated parameter read/write without timing distortion across fast switching transients. The 14 ns propagation delay preserves closed-loop control timing, while the 4 dedicated SPI channels plus 3 auxiliary channels provide full-duplex communication in a single 20-SSOP. Compared to optocoupler-based isolation, iCoupler technology delivers 10x faster throughput and no LED aging. Pairs naturally with ADUM4135 or ADUM4136 gate drivers for complete 3-phase drive signal chains.
おすすめ
Isolated Data Acquisition Front-Ends
In high-voltage test and measurement or process-control systems, the ADUM3152BRSZ isolates ADC SPI communication between the analog front-end and the digital back-end. The 34 Mbps data rate supports simultaneous sampling of multi-channel ADCs at full throughput, while the 25 kV/µs CMTI rejects fast transients from the high-voltage test environment. The 3.0 V to 5.5 V supply range accepts both 3.3 V and 5 V ADC logic levels directly, eliminating level shifters. The 1/2 forward/reverse auxiliary channel split is convenient for routing ADC busy/int signals alongside data. Engineers commonly pair the ADUM3152BRSZ with precision ADCs like AD7768 or AD7124 for isolated precision measurement in industrial and medical instrumentation.
おすすめ
Isolated Gate-Driver Signal Paths for Power Converters
The ADUM3152BRSZ provides isolated SPI control for digital gate-driver ICs in solar inverters, UPS systems, and DC-DC converters where PWM timing integrity is critical. The 14 ns propagation delay and sub-3 ns channel-to-channel skew maintain accurate dead-time control across the isolation barrier, while the 25 kV/µs CMTI rating handles the high dv/dt present at the switching node. The 3750 Vrms reinforced isolation supports 600 V / 690 V AC bus systems per IEC 61800-5-1. The four dedicated SPI channels accommodate full SPI communication with gate-driver firmware updates, while the three auxiliary channels carry fault and enable signals. This design pattern appears widely in solar string inverter and EV traction inverter reference designs.
おすすめ
Medical Equipment Patient-Isolated Data Links
Patient-connected medical devices such as patient monitors, infusion pumps, and diagnostic imaging peripherals use the ADUM3152BRSZ to achieve galvanic isolation between the patient side and the host electronics. The 3750 Vrms reinforced isolation meets IEC 60601-1 isolation barrier requirements for patient protection when paired with appropriate creepage/clearance PCB layout (minimum 8 mm at 250 V working voltage). The 17 MHz SPI clock capability supports fast communication with medical-grade ADCs and DSP front-ends, while the low-power iCoupler architecture keeps patient-side heat dissipation minimal. The 1/2 forward/reverse auxiliary split accommodates bidirectional patient-side status signaling. This pattern is common in bedside monitors, ventilators, and continuous glucose monitors.
おすすめ
Isolated Sensor Readout in Process Control
Industrial process-control systems often read out 4-20 mA loop-powered sensors, RTDs, or thermocouples through isolated SPI ADC front-ends. The ADUM3152BRSZ isolates the SPI bus between the field-side ADC and the controller-side MCU in applications such as distributed control systems (DCS), PLC analog input modules, and safety instrumented systems (SIS). The 25 kV/µs CMTI rating rejects fast transients from heavy industrial switching, while the 3.0 V to 5.5 V supply range accepts both legacy 5 V PLC logic and modern 3.3 V microcontrollers. The 7-channel configuration isolates the SPI bus plus auxiliary signals like ADC DRDY and range-select in a single 20-SSOP. This simplifies IEC 61508 SIL-2/3 functional safety designs by minimizing the number of isolation components.
おすすめ
PLC and Industrial Communication Bus Isolation
Programmable Logic Controllers (PLCs) and industrial communication modules use the ADUM3152BRSZ to isolate SPI-based communication between logic-side processors and field-side transceivers. The 3750 Vrms reinforced isolation satisfies the 230 V AC field-side working voltage common in European industrial cabinets, while the 25 kV/µs CMTI rating tolerates the high-noise environment of motor contactors and solenoid drivers. The 17 MHz SPI clock is sufficient for Profibus, Profinet, and EtherCAT slave PHY configuration interfaces. Auxiliary channels carry direction-control and link-status signals alongside the main SPI data. Common pairings include ADIN1100 industrial Ethernet PHY and ADM3052BRWZ isolated CAN transceiver for complete industrial node isolation.
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: ADUM3152BRSZ — 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 | ADUM3153BRSZ | ADUM3151BRSZ | ADUM3150BRSZ | ADUM3154BRSZ | ADUM3155BRSZ | ISO7762DBQR |
|---|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Package | 20-SSOP (5.30 mm) | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | SSOP-16 (DBQ) |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 3750 Vrms | 2500 Vrms | 3750 Vrms | 3750 Vrms | 5000 Vrms |
| Maximum Data Rate | 34 Mbps | 34 Mbps | 34 Mbps | 1 Mbps | 34 Mbps | 34 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Channel Count | 7 (4 SPI + 3 aux) | 7 (4 SPI + 3 aux, 2F/1R) | 7 (4 SPI + 3 aux, 2F/1R) | 6 (4 SPI + 2 aux) | 4 (SPI only) | 5 (4 SPI + 1 aux) | 6 (general purpose) |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.25 V to 5.5 V |
| Propagation Delay | 14 ns | 14 ns | 14 ns | 60 ns | 14 ns | 14 ns | 10 ns (typical) |
主な差別化要因
- Purpose-built 7-channel SPIsolator with dedicated SPI clock lane （vs ADUM3150BRSZ)
- Balanced auxiliary channel directionality for full-duplex peripherals （vs ADUM3154BRSZ)
- Higher isolation voltage than lower-tier SPIsolator （vs ADUM3150BRSZ)
- Higher channel count with SPI optimization vs generic isolator （vs ISO7762DBQR)
設計ノート
Place 0.1 µF ceramic bypass capacitors as close as physically possible to both VDD1 (pin 1) and VDD2 (pin 13) pins to minimize high-frequency noise on the iCoupler oscillator supply. Use X7R or X5R dielectric ceramics in 0402 or 0603 size for minimal ESL. Add a 1 µF to 10 µF bulk tantalum or ceramic capacitor adjacent to each supply pin for low-frequency decoupling. Keep ground returns short and direct - the GND1 and GND2 pins must each connect to their respective ground planes without shared stitching that would defeat the isolation barrier.
Maintain at least 8 mm creepage and clearance between the side-1 copper pour (VDD1/GND1) and the side-2 copper pour (VDD2/GND2) for 250 V working voltage per IEC 60747-17. Route the high-speed SPI traces (CLK, MO/SI, MI/SO, SS) as 50 Ω microstrip with continuous ground reference on the source side; avoid crossing the isolation barrier with any trace that would violate creepage. Place the ADUM3152BRSZ straddling the barrier so that pin 1-10 sit on side 1 and pin 11-20 sit on side 2 - this minimizes routing complexity and ensures each SPI signal path is fully isolated.
Do not exceed the absolute maximum VDD1 or VDD2 supply voltage of 6.5 V, even during transient events - the internal CMOS drivers will not survive sustained overvoltage. When using the DISABLE pin (pin 19), ensure it is tied to GND1 if unused, never left floating. Verify that the auxiliary channel directionality (1 forward / 2 reverse for ADUM3152) matches your design before layout freeze - swapping to ADUM3153 reverses the count (2 forward / 1 reverse) and is not always a transparent swap. Estimated input current per side is approximately 12 mA at 5 V with all channels switching at 1 MHz.
The ADUM3152BRSZ's 14 ns propagation delay has less than 3 ns channel-to-channel skew across the four SPI channels, ensuring matched setup-and-hold timing for full-duplex SPI masters. For SPI clock rates above 10 MHz, terminate the CLK trace with a 33 Ω series resistor at the driver output to dampen ringing caused by the SSOP package lead inductance (approximately 1.5 nH per lead). Keep stub lengths on the SPI traces below 5 mm to avoid reflections that would violate the ADUM3152's setup-and-hold windows.
コンプライアンス情報
RoHS and REACH compliant per Analog Devices product page. UL 1577 reinforced insulation recognized. AEC-Q100 not applicable - this is an industrial/medical-grade part, not automotive qualified. Halogen-free status not explicitly listed in retrieved web data.
