ACPL-796J-000E Avago Technologies US Inc., ACPL-796J-000E Datasheet - Page 16

• Manufacturer Part Number: ACPL-796J-000E
• Description: Isolated Sigma-Delta Modulator, LF
• Manufacturer: Avago Technologies US Inc.

Specifications of ACPL-796J-000E

• Amplifier Type: Isolation
• Number Of Circuits: 1
• Current - Input Bias: 500nA
• Voltage - Input Offset: 3000µV
• Current - Supply: 14mA
• Voltage - Supply, Single/dual (±): 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -
• Slew Rate: -
• Gain Bandwidth Product: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 0. Schematic for three conductor shunt connection.
The ACPL-796J can also be used to isolate signals with am-
plitudes larger than its recommended input range with
the use of a resistive voltage divider at its input. The only
restrictions are that the impedance of the divider be rela-
tively small (less than 1 k:) so that the input resistance
(33 k:) and input bias current (0.5 PA) do not affect the
accuracy of the measurement. An input bypass capacitor
is still required, although the 39 : series damping resistor
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Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved.
AV02-1670EN - March 25, 2011
oltage Sensing
MOTOR
+
+
R
SENSE
–
–
HV+
HV–
R2a 39 Ω
R2b 39 Ω
CIRCUIT
DRIVE
GATE
FLOATING
POSITIVE SUPPLY
10 nF
C2a
5.1 V
D1
R1
C2b
10 nF
C1
0.1 μF
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is not (the resistance of the voltage divider provides the
same function). The low-pass filter formed by the divider
resistance and the input bypass capacitor may limit the
achievable bandwidth. To obtain higher bandwidth, the
input bypass capacitor (C2) can be reduced, but it should
not be reduced much below 1000 pF to maintain adequate
input bypassing of the isolated modulator.
V
V
V
GND1
DD1
IN
IN
+
–
ACPL-796J
ISOLATION
BARRIER
MCLKIN
MDAT
GND2
V
DD2
ISOLATED
5 V/3.3 V
NON-
0.1 μF
C3