Parameter
ADuM2400BRWZ/ADuM2401BRWZ/ ADuM2402BRWZ
Minimum Pulse Width3 Maximum Data Rate4 Propagation Delay5
Pulse Width Distortion, |tPLH ? tPHL|5
Change vs. Temperature Propagation Delay Skew6
Channel-to-Channel Matching, Codirectional Channels7 Channel-to-Channel Matching, Opposing-Directional Channels7 ADuM2400CRWZ/ADuM2401CRWZ/ ADuM2402CRWZ
Minimum Pulse Width3 Maximum Data Rate4 Propagation Delay5
Pulse Width Distortion, |tPLH ? tPHL|5
Change vs. Temperature Propagation Delay Skew6
Channel-to-Channel Matching, Codirectional Channels7 Channel-to-Channel Matching, Opposing-Directional Channels7 For All Models
Output Disable Propagation Delay (High/Low to High Impedance) Output Enable Propagation Delay (High Impedance to High/Low) Output Rise/Fall Time (10% to 90%) Common-Mode Transient Immunity at Logic High Output8
Common-Mode Transient Immunity at Logic Low Output8 Refresh Rate
Input Dynamic Supply Current per Channel9 Output Dynamic Supply Current per Channel9
12
Symbol Min Typ Max Unit Test Conditions
PW tPHL, tPLH PWD tPSK tPSKCD tPSKOD
10 20
32 5
100 ns
Mbps 50 ns 3 ns
ps/°C 15 ns 3 ns 6
ns
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels
PW tPHL, tPLH PWD tPSK tPSKCD tPSKOD
90 18
8.3 120 27 0.5 3
11.1 ns
Mbps 32 ns 2 ns
ps/°C 10 ns 2 ns 5
ns
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels
tPHZ, tPLH tPZH, tPZL tR/tF |CMH| |CML| fr IDDI (D) IDDO (D)
6 6 2.5 35 35 1.2 0.19 0.05
8 8
ns ns ns kV/μs kV/μs Mbps mA/Mbps mA/Mbps
CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels CL = 15 pF, CMOS signal levels VIx = VDD1 or VDD2, VCM = 1000 V, transient magnitude = 800 V VIx = 0 V, VCM = 1000 V,
transient magnitude = 800 V
25 25
All voltages are relative to their respective ground.
Supply current values are for all four channels combined running at identical data rates. Output supply current values are specified with no output load present. The supply current associated with an individual channel operating at a given data rate can be calculated as described in the Power Consumption section. See Figure 8 through Figure 10 for information on per channel supply current as a function of data rate for unloaded and loaded conditions. See Figure 11 through Figure 15 for total VDD1 and VDD2 supply currents as a function of data rate for ADuM2400/ADuM2401/ADuM2402 channel configurations.
3
The minimum pulse width is the shortest pulse width at which the specified pulse width distortion is guaranteed. The maximum data rate is the fastest data rate at which the specified pulse width distortion is guaranteed. 5
tPHL propagation delay is measured from the 50% level of the falling edge of the VIx signal to the 50% level of the falling edge of the VOx signal. tPLH propagation delay is measured from the 50% level of the rising edge of the VIx signal to the 50% level of the rising edge of the VOx signal. 6
tPSK is the magnitude of the worst-case difference in tPHL or tPLH that is measured between units at the same operating temperature, supply voltages, and output load within the recommended operating conditions.
47
Codirectional channel-to-channelmatching is the absolute value of the difference in propagationdelays between any two channels with inputson the same side of the isolation barrier. Opposing directional channel-to-channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposing sides of the isolation barrier.
8
CMH is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDD2. CML is the maximum common-mode voltage slew rate that can be sustained while maintaining VO < 0.8 V. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. The transient magnitude is the range over which the common mode is slewed.
9
Dynamic supply current is the incremental amountof supply currentrequired for a 1 Mbps increase in signaldata rate. See Figure8 throughFigure10for information on per channel supply current for unloaded and loaded conditions. See the Power Consumption section for guidance on calculating per channel supply current for a given data rate.
ADuM2400/ADuM2401/ADuM2402 Data Sheet
Rev. F | Page 10 of 24
Data Sheet
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 ADuM2400/ADuM2401/ADuM2402 transformers. Figure 20 expresses these allowable current magnitudes as a function of frequency for selected distances. As can be seen, the
ADuM2400/ADuM2401/ADuM2402 is 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, place a 0.5 kA current 5 mm away from the ADuM2400/ADuM2401/ADuM2402 to affect the component’s operation.
1000ADuM2400/ADuM2401/ADuM2402
POWER CONSUMPTION
The supply current at a given channel of the ADuM2400/ ADuM2401/ADuM2402 isolator is a function of the supply voltage, the data rate of the channel, and the output load of the channel.
For each input channel, the supply current is given by:
IDDI = IDDI (Q)
IDDI = IDDI (D) × (2f ? fr) + IDDI (Q)
For each output channel, the supply current is given by:
IDDO = IDDO (Q)
f ≤ 0.5fr f > 0.5fr
where:
IDDI (D), IDDO (D) are the input and output dynamic supply currents per channel (mA/Mbps).
CL is the output load capacitance (pF). VDDO is the output supply voltage (V).
f is the input logic signal frequency (MHz, half of the input data rate, NRZ signaling).
fr is the input stage refresh rate (Mbps).
IDDI (Q), IDDO (Q) are the specified input and output quiescent supply currents (mA).
To calculate the total IDD1 and IDD2, the supply currents for each input and output channel corresponding to IDD1 and IDD2 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 the total IDD1 and IDD2 as a function of data rate for the ADuM2400/ADuM2401/ADuM2402 channel configurations.
IDDO = (IDDO (D) + (0.5 × 10-3 × CLVDDO) × (2f ? fr) + IDDO (Q)
f ≤ 0.5fr f > 0.5fr
MAXIMUM ALLOWABLE CURRENT (kA)DISTANCE = 1m10010DISTANCE = 100mm1DISTANCE = 5mm0.105007-0200.011k10k100k1M10M100MMAGNETIC FIELD FREQUENCY (Hz)Figure 20. Maximum Allowable Current for Various Current-to-ADuM2400/ADuM2401/ADuM2402 Spacings
Note that at combinations of strong magnetic field and high frequency, any loops formed by printed circuit board traces could 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.
Rev. F | Page 19 of 24
ADuM2400/ADuM2401/ADuM2402
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 ADuM2400/ ADuM2401/ADuM2402.
Analog Devices performs accelerated life testing using voltage levels higher than the rated continuous working voltage. Acceleration 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 10 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 ADuM2400/ADuM2401/ ADuM2402 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.
Data Sheet
In the case of unipolar ac or dc voltage, the stress on the
insulation is significantly lower. This allows operation at higher working voltages while still achieving a 50-year service life. The working voltages listed in Table 10 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 waveform and its peak voltage should be limited to the 50-year lifetime voltage value listed in Table 10.
Note that the voltage presented in Figure 22 is shown as sinusoidal 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 VOLTAGE0V05007-021Figure 21. Bipolar AC Waveform
RATED PEAK VOLTAGE05007-0220VFigure 22. Unipolar AC Waveform
RATED PEAK VOLTAGE05007-0230VFigure 23. DC Waveform
Rev. F | Page 20 of 24
ADuM2400/ADuM2401/ADuM2402
ORDERING GUIDE
Model
ADuM2400ARWZADuM2400BRWZ ADuM2400CRWZ ADuM2400ARIZADuM2400BRIZ ADuM2400CRIZ ADuM2401ARWZ ADuM2401BRWZ ADuM2401CRWZ ADuM2401ARIZ ADuM2401BRIZ ADuM2401CRIZ ADuM2402ARWZ ADuM2402BRWZ ADuM2402CRWZ ADuM2402ARIZ ADuM2402BRIZ ADuM2402CRIZ
12
Data Sheet
Maximum Propagation Delay, 5 V (ns) 100 50 32 100 50 32 100 50 32 100 50 32 100 50 32 100 50 32
Maximum Pulse Width Distortion (ns) 40 3 2 40 3 2 40 3 2 40 3 2 40 3 2 40 3 2
Temperature Range
?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C ?40°C to +105°C
Package
Package Description Option 16-Lead SOIC_W RW-16 16-Lead SOIC_W RW-16 16-Lead SOIC_W RW-16 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_W RW-16 16-Lead SOIC_W RW-16 16-Lead SOIC_W RW-16 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_W RW-16 16-Lead SOIC_W RW-16 16-Lead SOIC_W RW-16 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_IC RI-16-2 16-Lead SOIC_IC RI-16-2
1, 2
Number
of Inputs, VDD1 Side 4 4 4 4 4 4 3 3 3 3 3 3 2 2 2 2 2 2 Number of Inputs, VDD2 Side 0 0 0 0 0 0 1 1 1 1 1 1 2 2 2 2 2 2 Maximum Data Rate (Mbps) 1 10 90 1 10 90 1 10 90 1 10 90 1 10 90 1 10 90
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.
Rev. F | Page 22 of 24
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