ADUM140D1BRZ-RL7 - 150Mbps Quad Digital Isolator | Analog Devices
MPN： ADUM140D1BRZ-RL7 ✓ 啟用中ADUM140D1BRZ-RL7 概覽
A digital isolator is a semiconductor device that transmits digital signals across an isolation barrier using magnetic, capacitive, or optical coupling while blocking DC and low-frequency AC between the input and output sides. Digital isolators are categorized within the broader signal-isolation hierarchy as: digital isolator -> isolator -> interface IC -> integrated circuit. They are widely used in place of optocouplers to deliver higher speed, lower power, tighter channel-to-channel matching, and superior common-mode transient immunity, which is critical in industrial, medical, and renewable-energy systems that must withstand fast switching transients on the ground reference.
Key features include a maximum data rate of 150 Mbps, propagation delay of 13 ns typical, pulse-width distortion of 3 ns maximum, and channel-to-channel matching of 3 ns maximum. The device operates from a 1.8 V to 5 V supply on both sides, supports 3.0 V to 5.5 V level translation, and consumes 11 mA typical per channel at 5 V. Two fail-safe output options are available within the ADuM140D family: the default state-high and the state-low variants are selected by part suffix. The 16-SOIC wide-body package provides a minimum clearance and creepage distance suitable for reinforced insulation at 3000 Vrms working voltage per IEC 60747-17 (VDE 0884-17).
The iCoupler architecture uses chip-scale transformers rather than LEDs and photodiodes, eliminating the aging, CTR degradation, and slow response inherent to optocouplers. Each channel contains an encoder/decoder pair and a refresh circuit that maintains DC correctness at the output even in the absence of input transitions, preventing long-term settling errors.
Typical applications include isolated SPI/RS-485/RS-232 interfaces, gate driver isolation for IGBT and SiC power modules, isolated A/D and D/A converter data paths, and industrial fieldbus links such as Profibus and CAN. The wide 1.8 V to 5 V logic-side range allows direct connection to microcontrollers, FPGAs, and gate drivers without additional level shifters.
When designing with the ADUM140D1BRZ-RL7, observe the recommended decoupling and bypass scheme (0.1 uF plus 10 uF bulk per supply pin) and respect the maximum data rate versus load capacitance trade-off documented in the datasheet timing section. Select the appropriate fail-safe option for your system by suffix (1 = output high when input unpowered).
This page synthesizes distributor pricing, drop-in alternatives in the same SOIC-16W footprint, and practical design notes that are not found in the manufacturer datasheet, providing a one-stop engineering reference for selecting the ADUM140D1BRZ-RL7 in new designs and as a drop-in for legacy ADUM1400/ADUM1401 optocoupler replacements.
直接替換替代品，適用於 ADUM140D1BRZ-RL7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADUM140D1BRZ-RL7 （相同外形與佔位） — 差異在於 Package, Operating Temperature, Channel Configuration, Common-Mode Transient Immunity (CMTI), Technology.
ADUM140D0BRZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM140E1BRZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM140D1BRZ
✅ 直接替換聯絡詢價
查看資料表 →ISO7741DBQR
✅ 直接替換聯絡詢價
查看資料表 →SI8641BB-B-IS
✅ 直接替換📋 參考替代品（不在目錄中）
ISO7841DW
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM140D1BRZ-RL7 規格
| 功能 | Quad-channel digital isolator (4:0 unidirectional) |
| Technology | iCoupler (CMOS + monolithic air-core transformer) |
| Number of Channels | 4 |
| Channel Configuration | 4/0 (4 forward, 0 reverse) |
| Data Rate (Maximum) | 150 Mbps |
| Propagation Delay (Typical) | 13 ns |
| Pulse-Width Distortion (Maximum) | 3 ns |
| Channel-to-Channel Matching (Maximum) | 3 ns |
| Common-Mode Transient Immunity (CMTI) | 75 kV/us (minimum) |
| Withstand Isolation Voltage | 3000 Vrms |
| Supply Voltage (VDD1, VDD2) | 1.8 V to 5 V (3.0 V to 5.5 V absolute maximum) |
| Supply Current (per channel, typical @5 V) | 11 mA |
| Fail-Safe Option | Output high (suffix '1') when input unpowered |
| 工作溫度 | -40C to +125C |
| 封裝 | 16-SOIC (wide-body, 0.154" / 3.90 mm width) |
| 安裝類型 | Surface Mount |
| Packaging | Tape & Reel (RL7 = 1000 pcs) |
| RoHS 狀態 | Compliant |
ADUM140D1BRZ-RL7 腳位配置
| 腳位 1 | VDD1 — Supply voltage for side 1 (input side), 1.8 V to 5 V |
| 腳位 2 | GND1 — Ground reference for side 1 |
| 腳位 3 | VIA — Logic input A (side 1) |
| 腳位 4 | VIB — Logic input B (side 1) |
| 腳位 5 | VIC — Logic input C (side 1) |
| 腳位 6 | VID — Logic input D (side 1) |
| 腳位 7 | NC — Not connected (reserved for creepage on side 1) |
| 腳位 8 | GND1 — Ground reference for side 1 (second pin) |
| 腳位 9 | GND2 — Ground reference for side 2 (output side) |
| 腳位 10 | NC — Not connected (reserved for creepage on side 2) |
| 腳位 11 | VOD — Logic output D (side 2) |
| 腳位 12 | VOC — Logic output C (side 2) |
| 腳位 13 | VOB — Logic output B (side 2) |
| 腳位 14 | VOA — Logic output A (side 2) |
| 腳位 15 | VDD2 — Supply voltage for side 2 (output side), 1.8 V to 5 V |
| 腳位 16 | GND2 — Ground reference for side 2 (second pin) |
典型應用
ADUM140D1BRZ-RL7 適用於 6 應用s: Isolated SPI / RS-485 / RS-232 Interface, SiC / IGBT Gate Driver Isolation, Isolated ADC / DAC Data Path, Industrial Fieldbus and PLC I/O Isolation, Battery Management System (BMS) Communication, Isolated USB / Ethernet PHY Interface.
Isolated SPI / RS-485 / RS-232 Interface
The ADUM140D1BRZ-RL7's 150 Mbps data rate, 3 ns pulse-width distortion, and 3 ns channel-to-channel matching make it ideal for isolating high-speed serial buses such as SPI between an MCU and a remote sensor, isolated RS-485 transceivers, and isolated RS-232 links in industrial gateways. The 1.8 V to 5 V logic-side range connects directly to microcontrollers and FPGAs without level shifters, and the 3000 Vrms withstand covers 24 V industrial field-bus links. Placed between the MCU and the bus transceiver, it provides both signal isolation and ground-noise immunity. Compared to optocouplers, the four channels in one package reduce board area and eliminate the need for separate pull-ups per channel.
推薦
SiC / IGBT Gate Driver Isolation
The ADUM140D1BRZ-RL7 is purpose-built for high-side/low-side gate driver isolation in SiC MOSFET and IGBT half-bridges used in EV traction inverters, solar inverters, and industrial motor drives. Its 75 kV/us minimum CMTI guarantees clean logic transitions even when SiC devices switch at 100 V/ns, while the 3000 Vrms withstand voltage covers 600 V to 1200 V bus rails. The four channels can carry PWM, fault, and feedback signals for one half-bridge plus auxiliary lines. Placed between the control MCU and the gate driver IC, it replaces bootstrap or high-side power supply isolation schemes. Compared to gate-drive transformers, the digital isolator eliminates magnetic saturation and provides DC-correct output states.
推薦
Isolated ADC / DAC Data Path
The ADUM140D1BRZ-RL7's 150 Mbps data rate and 3 ns channel-to-channel matching make it an excellent isolation barrier for parallel ADC and DAC data interfaces in precision measurement systems, medical instrumentation, and grid-monitoring equipment. Four channels can carry the parallel data bus plus a synchronous clock, while the 3 ns matching preserves sample-to-sample timing. The 1.8 V to 5 V supply range allows direct connection to ADC/DAC logic pins without level translators. Placed between the analog front end and the digital controller, it rejects common-mode ground loops that would otherwise corrupt low-level analog signals.
推薦
Industrial Fieldbus and PLC I/O Isolation
The ADUM140D1BRZ-RL7 delivers the CMTI and channel count required for isolating Profibus, CAN, RS-485, and RS-422 interfaces inside PLCs, distributed I/O modules, and motor controllers. Its 3000 Vrms withstand voltage handles 230 V AC and 400 V DC industrial bus levels, while 75 kV/us CMTI tolerates the switching transients typical of motor-drive and welding environments. Four channels isolate one full-duplex bus plus power-good and fault lines. Placed at the field-side connector boundary, it grounds the field common-mode voltage before it reaches the controller.
推薦
Battery Management System (BMS) Communication
The ADUM140D1BRZ-RL7's 3000 Vrms isolation and four channels are well-matched to BMS applications in lithium-ion battery packs, where each cell-monitoring front-end must be isolated from the vehicle chassis. Four channels can carry cell-balance enable, fault, daisy-chain data, and a synchronous clock between stacked monitoring ICs, while 75 kV/us CMTI tolerates the dv/dt generated by high-current switching on the battery rails. The wide 1.8 V to 5 V supply simplifies integration with low-voltage monitoring ASICs. Placed at every cell module boundary, it provides the reinforced insulation required by IEC 60664-1 for traction batteries.
推薦
Isolated USB / Ethernet PHY Interface
The ADUM140D1BRZ-RL7's 150 Mbps throughput supports low-speed USB (1.5 Mbps), full-speed USB (12 Mbps), and 10/100 Ethernet MII interfaces when an isolating USB or Ethernet transceiver is unavailable. Four channels can carry differential pair data plus differential pair clock signals with sub-3 ns matching. The 3000 Vrms withstand covers medical and industrial Ethernet isolation, while 1.8 V to 5 V logic supplies connect to PHY-side low-voltage rails. Placed between the PHY and the link-layer controller, it provides medical-grade patient isolation or factory-floor noise immunity.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM140D1BRZ-RL7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADUM140D0BRZ-RL7 | ADUM140E1BRZ | ADUM140D1BRZ | ISO7741DBQR | SI8641BB-B-IS | ISO7841DW |
|---|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions | Texas Instruments |
| Package | 16-SOIC (wide-body) | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Channel Configuration | 4/0 (forward) | 4/0 (forward) | 4/0 (forward) | 4/0 (forward) | 4/0 (forward) | 4/0 (forward) | 4/0 (forward) |
| Maximum Data Rate | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 100 Mbps (-33%) | 150 Mbps | 100 Mbps (-33%) |
| Isolation Withstand Voltage | 3000 Vrms | 3000 Vrms | 3000 Vrms | 3000 Vrms | 5000 Vrms (+67%) | 2500 Vrms (-17%) | 5700 Vrms (+90%) |
| CMTI (Minimum) | 75 kV/us | 75 kV/us | 100 kV/us (+33%) | 75 kV/us | 100 kV/us (+33%) | 50 kV/us (-33%) | 100 kV/us (+33%) |
| Fail-Safe Option | Output high (suffix '1') | Output low (suffix '0') | Output high (suffix '1') | Output high (suffix '1') | Output high | Output high | Output high |
| Propagation Delay (Typical) | 13 ns | 13 ns | 12 ns (-8%) | 13 ns | 11 ns | 10 ns | 11 ns |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -55C to +150C | -40C to +125C | -55C to +150C |
主要差異化特點
- Fail-safe option 1 (output high when unpowered) (對比ADUM140D0BRZ-RL7)
- Next-generation CMTI and supply-current improvement (對比ADUM140E1BRZ)
- Higher data rate than ISO7741 with pin-compatible footprint (對比ISO7741DBQR)
- Higher isolation rating than SI8641BB-B-IS (對比SI8641BB-B-IS)
設計說明
Decouple each VDD1 (pin 1) and VDD2 (pin 15) pin with a 0.1 uF ceramic capacitor placed within 2 mm of the supply pin, plus a 10 uF bulk ceramic or low-ESR tantalum capacitor on each side. According to the Analog Devices datasheet, insufficient decoupling causes output oscillation or logic glitches during high dv/dt events. Use separate ground planes for GND1 (pins 2 and 8) and GND2 (pins 9 and 16) to maintain the isolation barrier integrity on the PCB.
Maintain at least 8 mm of clearance and creepage between side 1 (pins 1-8) and side 2 (pins 9-16) copper pours on the top and bottom layers to preserve the 3000 Vrms rating. According to the Analog Devices datasheet and IEC 60747-17, cutting the PCB beneath the device (no copper traces or pours under the body) is recommended to maximize the isolation barrier. Avoid placing any high-voltage copper near the NC pins (pins 7 and 10) which are reserved for creepage.
When running data rates near 150 Mbps, route each channel trace as a 50 ohm controlled-impedance microstrip or stripline, keep traces short, and place a 22 to 47 ohm series termination resistor close to the output pin to dampen reflections. According to the Analog Devices datasheet timing section, load capacitance above 15 pF on VOA-VOD reduces achievable data rate and increases pulse-width distortion. Use ground-referenced vias within 5 mm of each output pin to provide a low-inductance return path.
Do not tie the NC pins (7 and 10) to any signal or supply; they are reserved for creepage. According to the Analog Devices datasheet, the fail-safe option (suffix '0' vs '1') determines output behavior when input power is removed - select the part variant that matches your system's safe state. Operating above 5.5 V absolute maximum on either VDD pin permanently damages the device. Estimate: with VDD = 5.0 V and 11 mA per channel, total supply current for 4 channels is approximately 44 mA; ensure the upstream LDO can source this with adequate headroom.
合規資訊
RoHS and REACH compliant per Analog Devices product page. Reinforced insulation rated to 300 Vrms to 600 Vrms working voltage per IEC 60747-17 (VDE 0884-17). Not AEC-Q100 qualified - refer to ADI automotive-grade isolators for AEC-Q100 options.
