The ADuM344x* are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices.

By avoiding the use of LEDs and photodiodes, iCoupler devices remove the design difficulties commonly associated with optocouplers. The typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates.

The ADuM344x isolators provide four independent isolation channels in a variety of channel configurations (see the Ordering Guide in the data sheet). The ADuM344x operates with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. In addition, the ADuM344x provides low pulse width distortion and tight channel-to-channel matching. Unlike other opto-coupler alternatives, the ADuM344x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during the power-up/power-down condition.

Applications

High speed multichannel isolation

SPI interface/data converter isolation

Instrumentation

* Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

Data Sheet, Rev. A, 5/08

Part#	Features	# Ch	Max Data Rate(Mbps)	Resolution (Bits)	Insulation Rating (kVrms)	Max Operating Temp (°C)	Pulse Width Distort (ns)	Max Prop Delay (ns)	Min Output Voltage (V)	Max Output Voltage (V)	Output Default State	Serial Clock	Package	Price* (1000-4999)
AD7400	Isolated Sigma-Delta Modulator	-	10	16	-	-	-	-	-	-	-	-	16-Lead SOIC	$4.00
AD7401	Isolated Sigma-Delta Modulator	-	10	16	-	-	-	-	-	-	-	-	16-Lead SOIC	$4.00
ADM2483	RS-485 Transceiver/Half Duplex	1	0.5	-	2.5	85	-	-	1.5	5	Z	-	16-Lead SOIC	$3.00
ADM2485	RS-485 Transeiver	1	16	-	2.5	85	-	-	2.1	5	Z	-	16-Lead SOIC	$5.50
ADM2486	RS-485 Transceiver/Half Duplex w/ Transformer Driver	1	20	-	2.5	85	-	-	-	-	Z	-	16-Lead SOIC	$4.98
ADM2490E	RS-485 Transceiver/Full Duplex	1	16	-	5	105	-	-	-	-	High	-	16-Lead SOIC	$4.50
ADUM1100	Standard Digital Isolator	1	100	-	2.5	125	2	18	3	5.5	High	-	8-Lead SOIC	$1.61
ADUM1200	Standard Digital Isolator	2	25	-	2.5	105	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.21
ADUM1201	Standard Digital Isolator	2	25	-	2.5	105	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.21
ADUM1210	Standard Digital Isolator	2	10	-	2.5	105	3	50	2.7	5.5	Low	-	8-Lead SOIC	$1.76
ADUM1230	Isolated Gate Drivers	2	10	-	2.5	105	8	160	12	18	Low	-	16-Lead SOIC	-
ADUM1233	Isolated Gate Drivers	2	10	-	2.5	105	-	160	12	18	Low	-	16-Lead SOIC	$1.56
ADUM1234	Isolated Gate Driver	2	-	-	2.5	-	-	160	12	18	Low	-	16-Lead SOIC	$1.56
ADUM1250	I2C Compliant Bidirectional Digital Isolator	1	1	-	2.5	105	67	150	-	-	High	Bidirectional	8-Lead SOIC	$3.38
ADUM1251	I2C Compliant Bidirectional Digital Isolator	1	1000	-	2.5	105	67	150	-	-	High	Unidirectional	8-Lead SOIC	$3.05
ADUM1300	Standard Digital Isolator	3	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$1.61
ADUM1301	Standard Digital Isolator	3	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$1.61
ADUM1310	Standard Digital Isolator	3	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$1.61
ADUM1400	Standard Digital Isolator	4	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1401	Standard Digital Isolator	4	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1402	Standard Digital Isolator	4	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1410	Standard Digital Isolator	4	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1411	Standard Digital Isolator	4	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1412	Standard Digital Isolator	4	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1420	Isolated Gate Driver	4	10	-	1.6	105	-	160	12	18	Low	-	-	$2.30
ADUM2200	Standard Digital Isolator	2	1	-	5	105	-	150	2.7	5.5	High	-	16-Lead SOIC	$1.64
ADUM2250	I2C Compliant Bidirectional Digital Isolator	2	1	-	5	105	-	-	-	-	High	Bidirectional	16-Lead SOIC	$3.99
ADUM2251	I2C Compliant Bidirectional Digital Isolator	2	1	-	5	105	-	-	-	-	High	Unidirectional	16-Lead SOIC	$3.59
ADUM2400	Standard Digital Isolator	4	90	-	5	105	3	32	2.7	5.5	High	-	16-Lead SOIC	$3.16
ADUM2401	Standard Digital Isolator	4	90	-	5	105	3	32	2.7	5.5	High	-	16-Lead SOIC	$3.16
ADUM2402	Standard Digital Isolator	4	90	-	5	105	3	32	2.7	5.5	High	-	16-Lead SOIC	$3.16
ADUM3100	Ruggedized for System Level ESD	1	100	-	2.5	105	2	18	3	5.5	High	-	8-Lead SOIC	$1.69
ADUM3200	Ruggedized for System-Level ESD	2	25	-	2.5	105	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.27
ADUM3201	Ruggedized for System-Level ESD	1	25	-	2.5	85	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.27
ADUM3300	Ruggedized for System-Level ESD	-	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$1.69
ADUM3301	Ruggedized for System-Level ESD	3	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$1.69
ADUM3400	Ruggedized for System-Level ESD	4	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$2.25
ADUM3401	Ruggerdized for System-Level ESD	-	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$2.25
ADUM3402	Ruggedized for System-Level ESD	4	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$2.25
ADUM3440	Standard Digital Isolator	4	150	-	2.5	105	5	32	3	5.5	High	-	16-Lead SOIC	$5.41
ADUM3441	Standard Digital Isolator	4	150	-	2.5	105	5	32	3	5.5	High	-	16-Lead SOIC	$5.41
ADUM3442	Standard Digital Isolator	4	150	-	2.5	105	5	32	3	5.5	High	-	16-Lead SOIC	$5.41
ADUM5230	Isolated Gate Driver	1	-	-	2.5	105	-	100	12	18	Low	-	16-Lead SOIC	$2.24
ADUM5240	Digital Isolator w/ isoPower	2	1	-	2.5	105	-	70	4.5	5.5	Low	-	8-Lead SOIC	$2.95
ADUM5241	Digital Isolator w/ isoPower	2	1	-	2.5	105	-	70	4.5	5.5	Low	-	8-Lead SOIC	$2.95
ADUM5242	Digital Isolator w/ isoPower	2	1	-	2.5	105	-	70	4.5	5.5	Low	-	8-Lead SOIC	$2.95
ADUM5401	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00
ADUM5402	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00
ADUM5403	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00
ADUM5404	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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