Analog Devices Inc. ADUM6212CRSZ

Overview

ADUM6212CRSZ from Analog Devices is a dual-channel digital isolator with integrated isoPower® dc-to-dc converter, providing galvanic isolation and regulated 3.3 V or 5.0 V isolated supply up to 150 mW. It delivers 100 Mbps signal isolation (NRZ), 25 kV/µs common-mode transient immunity, and operates from −40°C to +105°C in industrial PLCs and isolated sensor interfaces.

For engineers reviewing the ADUM6212CRSZ datasheet, ADUM6212CRSZ pinout, ADUM6212CRSZ application, or ADUM6212CRSZ equivalent, this page details its dual-channel isolation architecture, programmable VISO output, thermal shutdown protection, safety certifications (UL, VDE, CSA), and role in replacing discrete isolated power + signal solutions.

Technical Context

The ADUM6212CRSZ integrates iCoupler® transformer-based signal isolation with an on-chip isoPower dc-to-dc converter using high-frequency switching (125 MHz oscillator, 600 kHz PWM) to generate regulated isolated output. Its dual channels are configured as two outputs (VOA/VOB) on the isolated side and two inputs (VIA/VIB) on the primary side - distinct from ADUM6210/ADUM6211 channel directionality.

It supports three input/output voltage combinations: 5 V/5 V (150 mW), 5 V/3.3 V (100 mW), and 3.3 V/3.3 V (66 mW), with VSEL resistor network enabling precise VISO setpoint tuning. Safety isolation meets reinforced insulation per DIN V VDE V 0884-10 (VIORM = 849 V peak) and UL 1577 (3750 V rms, 1 min).

Key Specifications

Pinout & Package

ADUM6212CRSZ uses a 20-lead SSOP package with 5.3 mm creepage and clearance, optimized for high-voltage isolation. Pin assignments are fixed per ADUM6212 variant: Side 1 (primary) includes VDD1, GNDP, VIA/VIB inputs, and PDIS; Side 2 (isolated) includes VDD2, GNDISO, VOA/VOB outputs, VISO, VSEL, and dedicated power pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6211CRSZ and SI8662ED-B-IS, ADUM6212CRSZ uniquely combines dual-output-only channel configuration with integrated 150 mW isoPower, making it ideal for unidirectional control applications like gate drive biasing or PLC output staging where minimal component count and guaranteed timing matching are critical.

Availability

ADUM6212CRSZ is available at Aetrix Electronics and suitable for industrial PLCs, isolated sensor interfaces, RS-232 transceivers, and power supply gate drive biasing requiring stable component supply and long-term lifecycle support.

Supply support for ADUM6212CRSZ 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, serving industrial, automotive, communications, and healthcare markets.

The ADUM6212CRSZ belongs to the iCoupler® isoPower® family, engineered to replace optocouplers and discrete isolated power supplies in compact, high-reliability industrial and energy systems.

FAQ

What is the maximum output current supported by the ADUM6212CRSZ's isolated VISO supply?

The ADUM6212CRSZ supports up to 30 mA output current from its VISO pin when configured for 5.0 V output (5 V/5 V operation), and up to 20 mA when configured for 3.3 V output (3.3 V/3.3 V or 5 V/3.3 V). This is specified under load regulation and thermal limits; actual usable current depends on ambient temperature and PCB thermal design. The ADUM6212CRSZ datasheet defines IISO(MAX) as 30 mA with VISO > 4.675 V and 20 mA with VISO > 3.135 V.

How does the ADUM6212CRSZ differ from the ADUM6210CRSZ and ADUM6211CRSZ in channel configuration?

The ADUM6212CRSZ has both data channels configured as outputs on the isolated side (VOA and VOB), with inputs (VIA and VIB) on the primary side. In contrast, ADUM6210CRSZ has both channels as inputs on the primary side and outputs on the isolated side, while ADUM6211CRSZ mixes one input and one output per side. This makes ADUM6212CRSZ ideal for unidirectional control applications such as driving isolated gate drivers or PLC output stages.

Can the ADUM6212CRSZ operate with different input and output voltages, such as 5 V primary and 3.3 V isolated supply?

Yes, the ADUM6212CRSZ supports 5 V primary (VDDP) and 3.3 V isolated (VISO) operation, delivering up to 100 mW output power. This is achieved by configuring the VSEL resistor network (R1 = 10 kΩ, R2 = 16.9 kΩ) to set the VISO reference. The ADUM6212CRSZ datasheet specifies full electrical performance across 5 V/3.3 V, 5 V/5 V, and 3.3 V/3.3 V combinations, with corresponding derating of maximum load current.

What safety certifications apply to the ADUM6212CRSZ and what do they mean for system design?

The ADUM6212CRSZ carries UL 1577 (3750 V rms, 1 min), VDE V 0884-10 (VIORM = 849 V peak, reinforced insulation), and CSA Component Acceptance Notice 5A. These certifications validate its use in reinforced insulation systems up to 265 V rms working voltage, enabling direct connection to mains-referenced circuits without additional isolation barriers - critical for industrial safety compliance and reduced system-level validation effort.

Does the ADUM6212CRSZ require external components for the isoPower function, and if so, what are they?

Yes, the ADUM6212CRSZ requires two external components for isoPower: a VSEL resistor divider (R1 and R2) between VISO and GNDISO to set the output voltage, and bulk capacitance (0.1 µF || 10 µF) on the VISO pin to suppress ripple and noise. The ADUM6212CRSZ datasheet specifies CBO = 0.1 µF ceramic + 10 µF tantalum for optimal 75 mV p-p ripple at full load. No external transformers or inductors are needed - all magnetics are integrated.