AP358SG-U Diodes Inc, AP358SG-U Datasheet - Page 13

• Manufacturer Part Number: AP358SG-U
• Description: IC OPERATIONAL AMP DUAL 8-SOIC
• Manufacturer: Diodes Inc

Specifications of AP358SG-U

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Gain Bandwidth Product: 1MHz
• Current - Input Bias: 45nA
• Voltage - Input Offset: 2000µV
• Current - Supply: 1mA
• Current - Output / Channel: 40mA
• Voltage - Supply, Single/dual (±): 3 V ~ 32 V, ±1.5 V ~ 16 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Slew Rate: -

Application Information
inputs, and remain in the linear mode with an input common-mode voltage of 0 V
over a wide range of power supply voltage with little change in performance characteristics. At 25°C amplifier
operation is possible down to a minimum supply voltage of 2.3 V
reversed in polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited
current surge through the resulting forward diode within the IC could cause fusing of the internal conductors and
result in a destroyed unit.
diodes are not needed, no large input currents result from large differential input voltages. The differential input
voltage may be larger than V
voltages from going negative more than -0.3 V
terminal can be used.
which converts to class B in a large signal mode. This allows the amplifiers to both source and sink large output
currents. Therefore both NPN and PNP external current boost transistors can be used to extend the power
capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode drop above ground to
bias the on-chip vertical PNP transistor for output current sinking applications.
be used, from the output of the amplifier to ground to increase the class A bias current and prevent crossover
distortion. Where the load is directly coupled, as in dc applications, there is no crossover distortion.
Values of 50pF can be accommodated using the worst-case non-inverting unity gain connection. Large closed
loop gains or resistive isolation should be used if larger load capacitance must be driven by the amplifier.
power supply voltage over the range of 3 V
can be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large
increase in IC chip dissipation which will cause eventual failure due to excessive function temperatures. Putting
direct short-circuits on more than one amplifier at a time will increase the total IC power dissipation to destructive
levels, if not properly protected with external dissipation limiting resistors in series with the output leads of the
amplifiers. The larger value of output source current which is available at 25°C provides a larger output current
capability at elevated temperatures (see typical performance characteristics) than a standard IC op amp.
supply voltage. If complementary power supplies are available, all of the standard op amp circuits can be used.
In general, introducing a pseudo-ground (a bias voltage reference of V
this value in single power supply systems. Many application circuits are shown which take advantage of the wide
input common-mode voltage range which includes ground. In most cases, input biasing is not required and input
voltages which range to ground can easily be accommodated.
AP358
Document number: DS31007 Rev. 6 - 2
The AP358 series are op amps which operate with only a single power supply voltage, have true-differential
Precautions should be taken to insure that the power supply for the integrated circuit never becomes
Large differential input voltages can be easily accommodated and, as input differential voltage protection
To reduce the power supply current drain, the amplifiers have a class A output stage for small signal levels
For ac applications, where the load is capacitively coupled to the output of the amplifier, a resistor should
Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin.
The bias network of the AP358 establishes a drain current which is independent of the magnitude of the
Output short circuits either to ground or to the positive power supply should be of short time duration. Units
The circuits presented in the section on typical applications emphasize operation on only a single power
+
without damaging the device. Protection should be provided to prevent the input
DC
to 30 V
DC
www.diodes.com
LOW POWER DUAL OPERATIONAL AMPLIFIERS
(at 25°C). An input clamp diode with a resistor to the IC input
DC
13 of 16
.
DC
.
+
/2) will allow operation above and below
DC
. These amplifiers operate
© Diodes Incorporated
AP358
July 2010