ADUM4221-1ARIZ from Analog Devices, in a SOIC-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	PWM	input	PWM logic input for the ADuM4221-1 that sets the half-bridge output state, with the logic input rated up to 6.5 V when VDD1 is unpowered.
2	NC	unconnected	No connect pin; do not connect to this pin.
3	VDD1	power_in	Input supply voltage, specified at 2.5 V to 6.5 V referenced to GND1; pins 3 and 8 are internally connected and connecting both is recommended.
4	GND1	power_in	Ground reference for the input logic signals.
5	DISABLE	input	Input disable pin that disables the isolator inputs and refresh circuits when driven high.
6	DT	input	Dead time control input; the resistor from DT to ground sets the dead time, with a recommended resistor range of 10 kΩ to 500 kΩ.
7	NC	unconnected	No connect pin; do not connect to this pin.
8	VDD1	power_in	Input supply voltage, specified at 2.5 V to 6.5 V referenced to GND1; internally connected to pin 3 and connecting both is recommended.
9	GNDB	power_in	Ground reference for Output B.
10	VOB	output	Inverting Output B of the half-bridge driver.
11	VDDB	power_in	Output B supply voltage, specified at 4.5 V to 35 V referenced to GNDB.
12	NC	unconnected	No connect pin; do not connect to this pin.
13	NC	unconnected	No connect pin; do not connect to this pin.
14	GNDA	power_in	Ground reference for Output A.
15	VOA	output	Noninverting Output A of the half-bridge driver.
16	VDDA	power_in	Output A supply voltage, specified at 4.5 V to 35 V referenced to GNDA.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	SOIC-16
Category	Power Supply Chip
Pins	16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Logic Input Voltage	VDD1	2.5		6.5	V		4
Output Supply Voltage	VDDA, VDDB	4.5		35	V		4
Input Supply Current, Quiescent	IDD1 (Q)	7.2		10	mA	Input A High/PWM High or Input B High	4
Output Supply Current, Per Channel, Quiescent	IDD2 (Q)	1.4		2.6	mA	Output Channel High	4
Output Supply Current, Per Channel, Quiescent	IDD2 (Q)	1.6		2.1	mA	Output Channel Low	4
Input Currents	IIA, IIB	-1	0.01	1	μA		4
VDD1 Positive Going Threshold	VVDD1UV+	2.45		2.5	V		4
VDD1 Negative Going Threshold	VVDD1UV−	2.3		2.35	V		4
VDDA and VDDB Positive Going Threshold	VVDDAUV+, VVDDBUV+	4.4		4.5	V	Grade A	4
VDDA and VDDB Negative Going Threshold	VVDDAUV−, VVDDBUV−	4.1		4.2	V	Grade A	4
Pull-Down NMOS On Resistance	RDSON_N	0.6		1.6	Ω	Tested at 250 mA, VDDx = 15 V	4
Pull-Up PMOS On Resistance	RDSON_P	0.8		1.8	Ω	Tested at 250 mA, VDDx = 15 V	4
Propagation Delay Rising Edge	tDLH	19	25	33	ns	CL = 2.2 nF, VDD1 = 5 V, VDDA and VDDB = 15 V, and RG = 5.1Ω	5
Propagation Delay Falling Edge	tDHL	21	30	44	ns		5
Time to Disable	tDIS	21	25	44	ns		5
Time to Enable	tEN	19	25	33	ns		5
Channel to Channel Matching	tPSKCD	1.5		10	ns	CL = 2.2 nF, VDD1 = 5 V, VDDA and VDDB = 15 V, see Figure 26	5
Output Rise and Fall Time (10% to 90%)	tR/tF	14	25	34	ns	CL = 2.2 nF, VDD1 = 5 V, VDDA and VDDB = 15 V, RG = 5.1 Ω, see Figure 33	5
Adjustable Dead Time	DT	1809	2320	2831	ns	Dead time resistor (RDT) = 500 kΩ	5
Adjustable Dead Time	DT	742	938	1135	ns	RDT = 200 kΩ	5
Adjustable Dead Time	DT	48	62	76	ns	RDT = 10 kΩ	5
Operating Junction Temperature	TJ	-40		125	°C		7
Dead Time Resistor Range	RDT	10		500	kΩ		7
Static Common-Mode Transient Immunity	CMTI	-150		150	kV/μs	Static	7
Dynamic Common-Mode Transient Immunity	CMTI	-150		150	kV/μs	Dynamic	7
Logic Input Supply Voltage	VDD1	2.5		6.5	V	Referenced to GND1	7
Output Supply Voltage	VDDA and VDDB	4.5		35	V	Referenced to GNDA and GNDB	7
Supply Voltage VDD1	VDD1	-0.2		7	V		8
Supply Voltage VDDA and VDDB	VDDA, VDDB	-0.3		40	V		8
Input Voltage (VIA, VIB, PWM, and DISABLE)	VIA, VIB, PWM, DISABLE	-0.3		7	V		8
Storage Temperature Range	TST	-55		150	°C		8
Junction Temperature Range	TJ	-40		125	°C		8
Common-Mode Transients	CMH, CML	-200		200	kV/μs		8
Junction to Ambient Thermal Resistance	θJA		45		°C/W	4-layer PCB, package RI-16-2	8
Junction to Top Characterization Parameter	ΨJT		16.67		°C/W	4-layer PCB, package RI-16-2	8

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
housing	pC		In accordance with DIN VDE V 0884-11, each ADuM4221/ADuM4221-1/ADuM4221-2 is proof tested by applying an insulation test voltage ≥ 1592 V peak for 1 sec (partial discharge detection limit = 5 pC). The	6

CAD (KiCad official)

Symbol: ADUM4221-1ARIZ
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D, STEP)
3D model files: adum4221-1ariz-etched.step / adum4221-1ariz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adum4221-1ariz.step / adum4221-1ariz.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Analog Devices datasheet (24 pp, sha256 dfd0b38f884ee2d2, retrieved 2026-11-02, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

ADUM4221-1ARIZ

Verified ADUM4221-1ARIZ

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3D Model

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