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Analog Devices Inc. ADUM7642CRQZ-RL7
- Part No.:
- ADUM7642CRQZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADUM7642CRQZ-RL7.pdf
- Description:
- DGTL ISO 1000VRMS 6CH GP 20QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,261
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Product details
Overview
ADUM7642CRQZ-RL7 from Analog Devices is a six-channel, 1 kVRMS digital isolator in a 20-lead QSOP package, supporting bidirectional communication at up to 25 Mbps (NRZ) with 3 V/5 V level translation. It features low power consumption (3.7 mA per channel at 3.3 V / 1 Mbps), high common-mode transient immunity (>15 kV/µs), and operates across −40°C to +105°C for industrial field bus and SPI isolation applications.
For engineers reviewing the ADUM7642CRQZ-RL7 datasheet, ADUM7642CRQZ-RL7 pinout, ADUM7642CRQZ-RL7 application, or ADUM7642CRQZ-RL7 equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases, and validated alternative options aligned with Analog Devices' iCoupler® family documentation.
Technical Context
The ADUM7642CRQZ-RL7 implements capacitive isolation using Analog Devices' iCoupler® technology, with separate input-side (Side 1) and output-side (Side 2) power domains (VDD1/VDD2 = 3.0–5.5 V). Its channel direction configuration-four inputs (A–C, F), two outputs (D, E)-is fixed per the ADuM7642 variant definition and enables asymmetric signal routing across the isolation barrier.
It integrates a channel-by-channel glitch filter and maintains DC correctness without refresh dependency on data activity, with a default high output state during input-side power loss. Propagation delay skew is ≤12 ns (codirectional) and ≤15 ns (opposing directional), ensuring timing integrity in multichannel synchronous interfaces like isolated SPI or RS-485 control lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 1000 VRMS for 1 minute (UL 1577 certified); supports basic insulation in industrial equipment with ≤420 VPEAK continuous working voltage. |
| Data Rate | Up to 25 Mbps (NRZ); enables high-speed isolated communication in motor drives and PLC I/O modules without protocol overhead. |
| Supply Voltage Range | 3.0 V to 5.5 V per side; allows mixed-voltage operation (e.g., 3.3 V MCU side / 5 V analog side) without external level shifters. |
| Power Consumption | 3.7 mA per channel at 3.3 V / 1 Mbps; reduces thermal load and extends battery life in isolated sensor nodes. |
| Common-Mode Immunity | >15 kV/µs; ensures reliable operation in noisy environments such as variable-frequency drives and factory automation systems. |
| Operating Temperature | −40°C to +105°C; qualified for under-hood automotive subsystems and industrial control cabinets without derating. |
| Pulse Width Distortion | ≤6 ns (C grade); preserves signal integrity in clock-forwarding and time-critical feedback loops. |
Pinout & Package
ADUM7642CRQZ-RL7 uses a 20-lead QSOP package (7.2 mm × 9.0 mm, 0.65 mm pitch) with reinforced creepage/clearance (4 mm) and internal dual-supply domain separation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 | VDD1A / VDD1B | Input-side dual supply pins; must be externally shorted and decoupled to GND1 (Pins 2 & 10) for stable core operation. |
| 2, 10 | GND1 | Input-side ground reference; internally connected; both pins require low-inductance PCB grounding for noise rejection. |
| 3–5, 9 | VIA, VIB, VIC, VIF | Logic inputs on Side 1; accept CMOS levels (VIH = 0.7×VDD1); used for MCU GPIO, SPI MOSI/MISO, or control signals. |
| 6, 8 | VOD, VOE | Logic outputs on Side 2; drive loads up to ±10 mA; provide isolated feedback or actuator enable signals. |
| 11, 19 | GND2 | Output-side ground reference; internally connected; must be isolated from GND1 and decoupled locally. |
| 12, 13 | VOF, VIE | Logic outputs/inputs on Side 2; VOF is output, VIE is input - confirms ADuM7642's 4-in/2-out directionality. |
| 14, 20 | VDD2B / VDD2A | Output-side dual supply pins; externally shorted and decoupled to GND2 (Pins 11 & 19); support independent voltage domain. |
| 15–18 | VID, VOC, VOB, VOA | Logic outputs on Side 2; complete six-channel output set; VOA–VOB–VOC–VOF–VOE are all outputs except VIE (input). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional channel flexibility | Four input channels (A–C, F) and two output channels (D, E) on Side 1; enables asymmetric interface bridging (e.g., SPI master control + status return). |
| Low-power isolation | Consumes only 3.7 mA per channel at 3.3 V / 1 Mbps - one-sixth typical of optocoupler-based solutions - reducing system-level heat dissipation. |
| Glitch-filtered reliability | Integrated per-channel glitch filter suppresses sub-100 ns noise transients, eliminating need for external RC filtering in EMI-prone industrial enclosures. |
| Fail-safe default state | Outputs default to logic high when input-side power is lost, enabling safe shutdown sequencing in motor control safety circuits. |
| High-temp robustness | Specified from −40°C to +105°C with no performance degradation; meets extended temperature requirements for DIN rail-mounted PLC modules. |
Applications
| SPI Interface Isolation | Industrial Field Bus Isolation |
|---|---|
|
Use Scenario: Isolating SPI communication between a 3.3 V microcontroller and a 5 V isolated ADC or DAC in a programmable logic controller. IC Role / Device Role / Timing Role: ADUM7642CRQZ-RL7 provides galvanic separation for MOSI, MISO, SCLK, and CS lines while maintaining 25 Mbps timing fidelity and 3 V/5 V level translation. Use Value: Eliminates ground loop errors and enables independent power domain management without external level shifters or optocouplers. |
Use Scenario: Protecting RS-485 transceiver control logic from high-voltage transients in factory floor motor drive networks. IC Role / Device Role / Timing Role: ADUM7642CRQZ-RL7 isolates DE/RE enable signals and fault reporting lines between MCU and transceiver, preserving signal integrity at >15 kV/µs CMTI. Use Value: Prevents latch-up and communication failure during switching events in VFDs, extending system uptime and reducing maintenance. |
| Isolated Sensor Signal Conditioning | Motor Drive Gate Driver Interface |
|
Use Scenario: Isolating analog front-end status signals (e.g., overtemperature, fault flags) from a high-side current sensor in an EV battery management system. IC Role / Device Role / Timing Role: ADUM7642CRQZ-RL7 routes four digital status bits from sensor ASIC to MCU across 1 kVRMS barrier with <6 ns pulse width distortion. Use Value: Enables real-time diagnostics without compromising safety certification or introducing timing jitter into fault response paths. |
Use Scenario: Delivering isolated PWM gate drive enable/disable commands and fault feedback from controller to half-bridge IGBT drivers in servo inverters. IC Role / Device Role / Timing Role: ADUM7642CRQZ-RL7 carries three control signals (EN, FAULT, RESET) and one status bit (READY) with codirectional skew ≤12 ns. Use Value: Guarantees synchronized gate driver activation and fast fault propagation (<1.6 µs recovery after power restoration), improving system reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM7641CRQZ-RL7 | 4-input / 2-output configuration same as ADUM7642CRQZ-RL7, but with inputs A–D and outputs E–F; pinout differs at Pins 6, 8, 13, 15. | Not pin-compatible; requires PCB layout change due to swapped input/output assignments on Side 1 and Side 2. | Select ADUM7641CRQZ-RL7 only if signal routing matches its specific 4-in/2-out mapping and board revision supports rework. |
| SI8662ED-B-IS | 6-channel isolator with 2.5 kVRMS rating, 150 Mbps max data rate, and different supply current profile (2.5 mA/ch @ 1 Mbps, 3.3 V). | Higher isolation rating suits medical or higher-safety applications; faster data rate unnecessary for SPI/RS-485 control layers. | Choose SI8662ED-B-IS when enhanced safety margin or future bandwidth headroom is required, accepting higher cost and different decoupling layout. |
Compared with ADUM7642CRQZ-RL7, ADUM7641CRQZ-RL7 offers identical performance but incompatible pin mapping, while SI8662ED-B-IS trades lower power efficiency for higher isolation and speed - making ADUM7642CRQZ-RL7 optimal for cost-sensitive, thermally constrained industrial control designs requiring precise 4-in/2-out signal routing.
Availability
ADUM7642CRQZ-RL7 is available at Aetrix Electronics and suitable for industrial automation, motor control, and isolated data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADUM7642CRQZ-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial, and communications markets.
The ADUM7642CRQZ-RL7 belongs to the ADuM764x iCoupler® digital isolator family, designed specifically for space-constrained, low-power industrial interfaces where functional isolation suffices - delivering 1 kVRMS safety at lower cost than 2.5 kV or 5 kV alternatives.
FAQ
What is the channel direction configuration of ADUM7642CRQZ-RL7?
ADUM7642CRQZ-RL7 has four input channels (A, B, C, F) and two output channels (D, E) on Side 1, with all six outputs (A–F) on Side 2. This 4-in/2-out asymmetry is fixed per the ADuM7642 variant and confirmed in Table 22 of the datasheet. Pin 6 is VOD (output), Pin 8 is VOE (output), and Pin 13 is VIE (input), distinguishing it from other members of the family.
Does ADUM7642CRQZ-RL7 support mixed 3.3 V and 5 V operation?
Yes, ADUM7642CRQZ-RL7 supports mixed-voltage operation: VDD1 can be 3.3 V while VDD2 is 5 V (or vice versa), as specified in Tables 7 and 10 of the datasheet. This enables direct interfacing between 3.3 V microcontrollers and 5 V peripherals without external level shifters, with full 25 Mbps data rate maintained.
What is the default output state of ADUM7642CRQZ-RL7 during power loss?
ADUM7642CRQZ-RL7 defaults to logic high on all outputs when input-side power (VDD1) is removed, as defined in Table 19 (Truth Table) of the datasheet. Output-side power (VDD2) must remain active for this behavior; recovery to normal operation occurs within 1.6 µs after VDD1 restoration.
How does ADUM7642CRQZ-RL7 achieve high common-mode transient immunity?
ADUM7642CRQZ-RL7 achieves >15 kV/µs common-mode transient immunity through differential capacitive coupling and on-chip noise rejection circuitry, as measured per IEC 61000-4-4 with 800 V transients across a 1000 V common-mode voltage. This is validated in Tables 5 and 9 for 3.3 V and mixed-supply conditions.
Is ADUM7642CRQZ-RL7 RoHS compliant and halogen-free?
Yes, ADUM7642CRQZ-RL7 is RoHS compliant and halogen-free, as confirmed in Analog Devices' official product change notices and packaging specifications for the CRQZ-RL7 tape-and-reel variant. The QSOP package uses matte tin lead finish and meets JEDEC J-STD-609 Category 1a requirements.
ADUM7642CRQZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 4/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1000Vrms
- Common Mode Transient Immunity (Min):
- 15kV/µs
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 6ns
- Rise / Fall Time (Typ):
- 2ns, 2ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QSOP
ADUM7642CRQZ-RL7 FAQ
1.How can I place an order for ADUM7642CRQZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM7642CRQZ-RL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADUM7642CRQZ-RL7 reliable?
The price and inventory of ADUM7642CRQZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM7642CRQZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM7642CRQZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM7642CRQZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM7642CRQZ-RL7?
ADUM7642CRQZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM7642CRQZ-RL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADUM7642CRQZ-RL7?
For technical support, including ADUM7642CRQZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM7642CRQZ-RL7 requirements.
6.How does Aetrix verify that ADUM7642CRQZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM7642CRQZ-RL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADUM7642CRQZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM7642CRQZ-RL7?
All ADUM7642CRQZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM7642CRQZ-RL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADUM7642CRQZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM7642CRQZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM7642CRQZ-RL7 Tags
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