ADUM4401WBRWZ-RL Datasheet ADUM4402WBRWZ, ADUM4401WBRWZ, ADUM4402WARWZ | P16-P18

ADuM4400W/ADuM4401W/ADuM4402W Automotive Products

The pulses at the transformer output have an amplitude greater

than 1.0 V. The decoder has a sensing threshold at about 0.5 V,

thereby establishing a 0.5 V margin in which induced voltages

can be tolerated. The voltage induced across the receiving coil

is given by

V = (−dβ/dt)Σ∏r

; n = 1, 2,…, N

where:

β is the magnetic flux density (gauss).

N is the number of turns in the receiving coil.

is the radius of the n

turn in the receiving coil (cm).

Given the geometry of the receiving coil in the ADuM4400W/

ADuM4401W/ADuM4402W and an imposed requirement that

the induced voltage be at most 50% of the 0.5 V margin at the

decoder, a maximum allowable magnetic field is calculated as

shown in Figure 19.

MAGNETIC FIELD FREQUENCY (Hz)

100

MAXIMUM ALLOWABLE MAGNETIC FLUX

DENSITY (kgauss)

0.001

0.01

1k 10k 10M

0.1

100M100k

11031-019

Figure 19. Maximum Allowable External Magnetic Flux Density

For example, at a magnetic field frequency of 1 MHz, the

maximum allowable magnetic field of 0.2 kgauss induces a

voltage of 0.25 V at the receiving coil. This is about 50% of the

sensing threshold and does not cause a faulty output transition.

Similarly, if such an event were to occur during a transmitted

pulse (and was of the worst-case polarity), it would reduce the

received pulse from >1.0 V to 0.75 V—still well above the 0.5 V

sensing threshold of the decoder.

The preceding magnetic flux density values correspond to

specific current magnitudes at given distances away from the

ADuM4400W/ADuM4401W/ADuM4402W transformers.

Figure 20 expresses these allowable current magnitudes as a

function of frequency for selected distances. As can be seen, the

ADuM4400W/ADuM4401W/ADuM4402W are immune and

can be affected only by extremely large currents operated at

high frequency and very close to the component. For the 1 MHz

example noted, one would have to place a 0.5 kA current 5 mm

away from the ADuM4400W/ADuM4401W/ADuM4402W to

affect the component’s operation.

MAGNETIC FIELD FREQUENCY (Hz)

MAXIMUM ALLOWABLE CURRENT (kA)

1000

100

0.1

0.01

1k 10k 100M100k 1M 10M

DISTANCE = 5mm

DISTANCE = 1m

DISTANCE = 100mm

11031-020

Figure 20. Maximum Allowable Current for Various Current-to-

ADuM4400W/ADuM4401W/ADuM4402W Spacings

Note that at combinations of strong magnetic field and high

frequency, any loops formed by printed circuit board traces may

induce sufficiently large error voltages to trigger the thresholds

of succeeding circuitry. Care should be taken in the layout of

such traces to avoid this possibility.

POWER CONSUMPTION

The supply current at a given channel of the ADuM4400W/

ADuM4401W/ADuM4402W isolator is a function of the supply

voltage, the channel’s data rate, and the channel’s output load.

For each input channel, the supply current is given by

DDI

= I

DDI (Q)

f ≤ 0.5f

DDI

= I

DDI (D)

× (2f − f

) + I

DDI (Q)

f > 0.5f

For each output channel, the supply current is given by:

DDO

= I

DDO (Q)

f ≤ 0.5f

DDO

= (I

DDO (D)

+ (0.5 × 10

−3

) × C

DDO

) × (2f − f

) + I

DDO (Q)

f > 0.5f

where:

DDI (D)

, I

DDO (D)

are the input and output dynamic supply currents

per channel (mA/Mbps).

is the output load capacitance (pF).

DDO

is the output supply voltage (V).

f is the input logic signal frequency (MHz, half of the input data

rate, NRZ signaling).

is the input stage refresh rate (Mbps).

DDI (Q)

, I

DDO (Q)

are the specified input and output quiescent

supply currents (mA).

Rev. A | Page 16 of 20

Automotive Products ADuM4400W/ADuM4401W/ADuM4402W

To calculate the total I

DD1

and I

DD2

, the supply currents for

each input and output channel corresponding to I

DD1

and I

DD2

are calculated and totaled. Figure 8 and Figure 9 provide per

channel supply currents as a function of data rate for an

unloaded output condition. Figure 10 provides per channel

supply current as a function of data rate for a 15 pF output

condition. Figure 11 through Figure 15 provide total I

DD1

and

DD2

as a function of data rate for ADuM4400W/ADuM4401W/

ADuM4402W channel configurations.

INSULATION LIFETIME

All insulation structures eventually break down when subjected

to voltage stress over a sufficiently long period. The rate of

insulation degradation is dependent on the characteristics of

the voltage waveform applied across the insulation. In addition

to the testing performed by the regulatory agencies, Analog

Devices carries out an extensive set of evaluations to determine

the lifetime of the insulation structure within the ADuM4400W/

ADuM4401W/ADuM4402W.

Analog Devices performs accelerated life testing using voltage

levels higher than the rated continuous working voltage. Accelera-

tion factors for several operating conditions are determined. These

factors allow calculation of the time to failure at the actual working

voltage. The values shown in Table 19 summarize the peak voltage

for 50 years of service life for a bipolar ac operating condition and

the maximum CSA/VDE approved working voltages. In many

cases, the approved working voltage is higher than the 50-year

service life voltage. Operation at these high working voltages

can lead to shortened insulation life in some cases.

The insulation lifetime of the ADuM4400W/ADuM4401W/

ADuM4402W depends on the voltage waveform type imposed

across the isolation barrier. The iCoupler insulation structure

degrades at different rates, depending on whether the waveform

is bipolar ac, unipolar ac, or dc. Figure 21, Figure 22, and

Figure 23 illustrate these different isolation voltage waveforms.

Bipolar ac voltage is the most stringent environment. The goal

of a 50-year operating lifetime under the ac bipolar condition

determines Analog Devices recommended maximum working

voltage.

In the case of unipolar ac or dc voltage, the stress on the insu-

lation is significantly lower. This allows operation at higher

working voltages while still achieving a 50-year service life.

The working voltages listed in Table 19 can be applied while

maintaining the 50-year minimum lifetime, provided the

voltage conforms to either the unipolar ac or dc voltage cases.

Any cross-insulation voltage waveform that does not conform

to Figure 22 or Figure 23 should be treated as a bipolar ac wave-

form, and its peak voltage should be limited to the 50-year

lifetime voltage value listed in Tabl e 19.

Note that the voltage presented in Figure 22 is shown as sinus-

oidal for illustration purposes only. It is meant to represent any

voltage waveform varying between 0 V and some limiting value.

The limiting value can be positive or negative, but the voltage

cannot cross 0 V.

RATED PEAK VOLTAGE

11031-021

Figure 21. Bipolar AC Waveform

RATED PEAK VOLTAGE

11031-022

Figure 22. Unipolar AC Waveform

RATED PEAK VOLTAGE

11031-023

Figure 23. DC Waveform

Rev. A | Page 17 of 20

ADuM4400W/ADuM4401W/ADuM4402W Automotive Products

Rev. A | Page 18 of 20

OUTLINE DIMENSIONS

CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS

(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR

REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.

COMPLIANT TO JEDEC STANDARDS MS-013-AA

10.50 (0.4134)

10.10 (0.3976)

0.30 (0.0118)

0.10 (0.0039)

2.65 (0.1043)

2.35 (0.0925)

10.65 (0.4193)

10.00 (0.3937)

7.60 (0.2992)

7.40 (0.2913)

(

)

(

)

45°

1.27 (0.0500)

0.40 (0.0157)

OPLANARITY

0.10

0.33 (0.0130)

0.20 (0.0079)

0.51 (0.0201)

0.31 (0.0122)

SEATING

PLANE

8°

0°

1.27 (0.0500)

BSC

03-27-2007-B

Figure 24. 16-Lead Standard Small Outline Package [SOIC_W]

Wide Body (RW-16)

Dimensions shown in millimeters and (inches)

ORDERING GUIDE

Model

1, 2, 3

Number

of Inputs,

DD1

Side

Number

of Inputs,

DD2

Side

Maximum

Data Rate

(Mbps)

Maximum

Propagation

Delay, 5 V (ns)

Maximum

Pulse Width

Distortion (ns)

Temperature

Range Package Description

Package

Option

ADuM4400WARWZ

4 0 1 100 40 −40°C to +125°C 16-Lead SOIC_W RW-16

ADuM4400WBRWZ 4 0 10 36 3.5 −40°C to +125°C 16-Lead SOIC_W RW-16

ADuM4401WARWZ 3 1 1 100 40 −40°C to +125°C 16-Lead SOIC_W RW-16

ADuM4401WBRWZ 3 1 10 36 3.5 −40°C to +125°C 16-Lead SOIC_W RW-16

ADuM4402WARWZ 2 2 1 100 40 −40°C to +125°C 16-Lead SOIC_W RW-16

ADuM4402WBRWZ 2 2 10 36 3.5 −40°C to +125°C 16-Lead SOIC_W RW-16

Tape and reel is available. The addition of an -RL suffix designates a 13” (1,000 units) tape and reel option.

Z = RoHS Compliant Part.

W = Qualified for Automotive Applications.

AUTOMOTIVE PRODUCTS

The ADuM4400W/ADuM4401W/ADuM4402W models are available with controlled manufacturing to support the quality and

reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the

commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade

products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific

product ordering information and to obtain the specific Automotive Reliability reports for these models.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P20

ADUM4401WBRWZ-RL

Mfr. #:

Buy ADUM4401WBRWZ-RL

Manufacturer:

Analog Devices Inc.

Description:

Digital Isolators 5kV RMS Quad-CH Digital

Lifecycle:

New from this manufacturer.

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