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ADUM7234BRZ

P1-P3P4-P6P7-P9P10-P12P13-P13
ADuM7234 Data Sheet
Rev. B | Page 6 of 12
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC = NO CONNECT
ADuM7234
TOP VIEW
(Not to Scale)
NC
1
V
IA
2
V
IB
3
V
DD1
4
V
DDA
16
V
OA
15
GND
A
14
NC
13
GND
1
5
NC
12
DISABLE
6
V
DDB
11
V
DD1
7
V
OB
10
NC
8
GND
B
9
07990-002
Figure 2. Pin Configuration
Table 7. Pin Function Descriptions
Pin No. Mnemonic Description
1, 8, 12, 13
NC
No Connect. Pin 12 and Pin 13 are floating and should be left unconnected.
2 V
IA
Logic Input A.
3 V
IB
Logic Input B.
4, 7 V
DD1
Input Supply Voltage, 4.5 V to 5.5 V. Pin 4 and Pin 7 are internally connected. Connecting both pins to V
DD1
is recommended.
5 GND
1
Ground Reference for Input Logic Signals.
6 DISABLE Input Disable. Disables the isolator inputs and refresh circuits. Outputs take on the default low state.
9 GND
B
Ground Reference for Output B.
10 V
OB
Output B.
11 V
DDB
Output B Supply Voltage, 12 V to 18 V.
14 GND
A
Ground Reference for Output A.
15 V
OA
Output A.
16 V
DDA
Output A Supply Voltage, 12 V to 18 V.
Table 8. Truth Table (Positive Logic)
V
IA
/V
IB
Input V
DD1
State DISABLE V
OA
/V
OB
Output Notes
High Powered Low High
Low Powered Low Low
X
1
Unpowered X
1
Low Output returns to the input state within 1 µs of V
DD1
power restoration
X
1
Powered High Low
1
X is don’t care.
Data Sheet ADuM7234
Rev. B | Page 7 of 12
TYPICAL PERFORMANCE CHARACTERISTICS
1.2
1.0
0.8
0.6
0.4
0.2
0
0 0.5 1.0 1.5 2.0
DATA RATE (Mbps)
INPUT CURRENT (mA)
07990-012
Figure 3. Typical Input Supply Current Variation with Data Rate
25
20
15
10
5
0
0 0.5 1.0 1.5
2.0
DATA RATE (Mbps)
OUTPUT CURRENT (mA)
07990-013
Figure 4. Typical Output Supply Current Variation with Data Rate
160
155
150
145
140
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
07990-014
Figure 5. Typical Propagation Delay Variation with Temperature
166
164
162
160
158
156
154
152
4.5 5.0 5.5
INPUT SUPPLY VOLTAGE (V)
PROPAGATION DELAY (ns)
07990-015
CHANNEL A FALL
CHANNEL B FALL
CHANNEL A RISE
CHANNEL B RISE
Figure 6. Typical Propagation Delay Variation with Input Supply Voltage
(Output Supply Voltage = 15.0 V)
166
164
162
160
158
156
154
152
12 15 18
OUTPUT SUPPLY VOLTAGE (V)
PROPAGATION DELAY (ns)
07990-016
CHANNEL B FALL
CHANNEL A RISE
CHANNEL B RISE
CHANNEL A FALL
Figure 7. Typical Propagation Delay Variation with Output Supply Voltage
(Input Supply Voltage = 5.0 V)
ADuM7234 Data Sheet
Rev. B | Page 8 of 12
APPLICATIONS INFORMATION
COMMON-MODE TRANSIENT IMMUNITY
In general, common-mode transients consist of linear and
sinusoidal components. The linear component of a common-
mode transient is given by
V
CM, linear
= (ΔV/Δt)t
where ΔV/Δt is the slope of the transient shown in Figure 11
and Figure 12.
The transient of the linear component is given by
dV
CM
/dt = ΔV/Δt
Figure 8 characterizes the ability of the ADuM7234 to operate
correctly in the presence of linear transients. The data, based on
design simulation, is the maximum linear transient magnitude
that the ADuM7234 can tolerate without an operational error.
This data shows a correlation with the data that is listed in
Table 4, which is based on measured data.
TEMPERATURE (°C)
100–40 0 40 80–20 20 60
TRANSIENT IMMUNITY (kV/µs)
50
45
35
40
30
25
20
15
10
5
0
07990-003
BEST-CASE PROCESS VARIATION
WORST-CASE PROCESS VARIATION
Figure 8. Transient Immunity (Linear Transients) vs. Temperature
The sinusoidal component (at a given frequency) is given by
V
CM, sinusoidal
= V
0
sin(2πft)
where:
V
0
is the magnitude of the sinusoidal.
f is the frequency of the sinusoidal.
The transient magnitude of the sinusoidal component is given by
dV
CM
/dt = 2πf V
0
Figure 9 and Figure 10 characterize the ability of the
ADuM7234 to operate correctly in the presence of sinusoidal
transients. The data is based on design simulation and is the
maximum sinusoidal transient magnitude (2πf V
0
) that the
ADuM7234 can tolerate without an operational error. Values
for immunity against sinusoidal transients are not included in
Table 4 because measurements to obtain such values have not
been possible.
FREQUENCY (MHz)
20000 500 1000 1500 1750250 750 1250
TRANSIENT IMMUNITY (kV/µs)
250
200
150
100
50
0
07990-004
BEST-CASE PROCESS VARIATION
WORST-CASE PROCESS VARIATION
Figure 9. Transient Immunity (Sinusoidal Transients),
27°C Ambient Temperature
FREQUENCY (MHz)
20000 500 1000 1500 1750250 750 1250
TRANSIENT IMMUNITY (kV/µs)
250
100
150
200
50
0
07990-005
BEST-CASE PROCESS VARIATION
WORST-CASE PROCESS VARIATION
Figure 10. Transient Immunity (Sinusoidal Transients),
100°C Ambient Temperature
P1-P3P4-P6P7-P9P10-P12P13-P13

ADUM7234BRZ

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Manufacturer:
Analog Devices Inc.
Description:
Gate Drivers Prec Half-Bridge Dvr 4A Output
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