Analog Devices Inc. ADUM5211CRSZ-RL7

Overview

ADuM5211CRSZ-RL7 from Analog Devices is a dual-channel digital isolator with integrated isoPower® DC-to-DC converter, delivering regulated 3.3 V or 5.0 V isolated output up to 150 mW, supporting data rates up to 100 Mbps (NRZ), and featuring 25 kV/µs common-mode transient immunity. It operates across −40°C to +105°C and is used in isolated sensor interfaces and industrial PLCs where compact, self-powered signal isolation is required.

For engineers reviewing the ADuM5211CRSZ-RL7 datasheet, ADuM5211CRSZ-RL7 pinout, ADuM5211CRSZ-RL7 application, or ADuM5211CRSZ-RL7 equivalent, key selection criteria include its 20-lead SSOP package with 5.3 mm creepage, dual-channel directionality (A-input/B-input → A-output/B-output), integrated 3.3/5.0 V isolated supply, 100 Mbps NRZ capability, and reinforced insulation rated to 600 V_peak per DIN EN IEC 60747-17.

Technical Context

The ADuM5211CRSZ-RL7 implements iCoupler® chip-scale transformer technology for both signal isolation and magnetic power transfer, eliminating external isolated DC-DC converters. Its isoPower section uses 125 MHz switching frequency and 600 kHz PWM control to regulate VISO between 3.135 V and 5.25 V, with load regulation of ≤3% and output ripple ≤75 mV_p-p at full load.

Signal channels operate independently of the power section, with propagation delay as low as 20 ns (C grade), pulse width distortion ≤2 ns, and channel matching (codirectional) skew ≤2 ns. Input and output logic thresholds are referenced to respective supply rails (VDD1/VDD2), and undervoltage lockout triggers at 2.4 V (falling) / 2.6 V (rising) on all supplies.

Key Specifications

Pinout & Package

ADuM5211CRSZ-RL7 is housed in a 20-lead Shrink Small Outline Package (SSOP) with 5.3 mm creepage and clearance, RoHS-compliant, and rated for Pollution Degree 2. The package supports reflow soldering and provides thermal impedance θ_JA = 50°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel isolated power+signal applications.

Compared with ADuM5211CRSZ-RL7, ADuM5210CRSZ-RL7 offers identical isolation and power specs but reversed channel directionality, while Si88222ED-IS trades VISO programmability and higher CMTI for capacitive-isolation cost structure and lower timing precision.

Availability

ADuM5211CRSZ-RL7 is available at Aetrix Electronics and suitable for industrial PLCs, isolated sensor interfaces, RS-232 transceivers, and power supply gate drive applications requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.

Supply support for ADuM5211CRSZ-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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The ADuM5211CRSZ-RL7 belongs to the iCoupler® isoPower® family, designed specifically for space-constrained, low-power isolated systems needing integrated signal + power transfer without external transformers or regulators.

FAQ

What is the maximum data rate supported by ADuM5211CRSZ-RL7?

ADuM5211CRSZ-RL7 supports up to 100 Mbps NRZ data rate in C-grade devices, with propagation delay as low as 20 ns and pulse width distortion ≤2 ns. This enables reliable high-speed SPI communication (up to 15 MHz clock) and real-time digital control signaling across the isolation barrier. Lower-grade versions (A/B) support 1 Mbps and 25 Mbps respectively, and all grades maintain guaranteed timing performance over −40°C to +105°C.

Can ADuM5211CRSZ-RL7 generate both 3.3 V and 5.0 V isolated outputs?

Yes, ADuM5211CRSZ-RL7 can generate either 3.3 V or 5.0 V isolated output on VISO, selected via the external resistor network connected to VSEL and GNDISO. With R1 = 10 kΩ and R2 = 16.9 kΩ, VISO is set to 3.3 V; with R1 = 10 kΩ and R2 = 30.9 kΩ, it is set to 5.0 V. The device supports VISO programming within ±20% of VDDP, provided the output remains in the 3.135–5.25 V range.

What is the purpose of the PDIS pin on ADuM5211CRSZ-RL7?

The PDIS pin on ADuM5211CRSZ-RL7 is an active-low power disable control. When pulled high (logic 1), the internal isoPower DC-DC converter enters low-power standby mode, reducing IDDP(Q) to ~3.2 mA. When held low (logic 0), the converter operates normally, delivering up to 150 mW. This feature allows dynamic power gating in battery-operated or energy-sensitive systems without disrupting signal isolation functionality.

Does ADuM5211CRSZ-RL7 require external components for stable operation?

Yes, ADuM5211CRSZ-RL7 requires external components for stable operation: (1) 0.1 µF || 10 µF ceramic + bulk capacitor on VISO for ripple suppression; (2) thermally matched resistor divider (R1/R2) between VISO and GNDISO for VSEL; (3) 0.1 µF decoupling capacitors on VDD1, VDD2, and VDDP; and (4) proper PCB layout with split ground planes and minimized loop areas per AN-0971. Omission risks output instability, EMI failure, or thermal shutdown.

How does ADuM5211CRSZ-RL7 achieve reinforced insulation certification?

ADuM5211CRSZ-RL7 achieves reinforced insulation certification through its 20-lead SSOP package with 5.3 mm creepage and clearance, 18 µm minimum distance through insulation, CTI >600 V, and material group I construction - validated per DIN EN IEC 60747-17 (VDE 0884-17), UL 1577 (2500 V_rms/1 min), and IEC/CSA 62368-1. These features ensure single-device compliance for safety-critical applications without requiring additional isolation barriers.