Technical Note

BA4558F,BA4560F,BA4558RF/FV/FVM,BA4560RF/FV/FVM,BA4580RF/FVM,

BA15218F,BA14741F,BA15532F,BA4510F/FV,BA2115F/FVM

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2009.05 - Rev.A

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保護抵抗

VEE

VCC

VCC

VEE

同相入力電圧

範囲内の電位

●

Cautions on use

1) Processing of unused circuit

It is recommended to apply connection (see the Fig.234) and set the

noninverting input terminal at the potential within input common-mode

voltage range (Vicm), for any unused circuit.

2) Input voltage

Applying VEE+36[V](BA4550R,BA4560R,BA4580R family), VEE+14[V]

(BA2115 family) to the input terminal is possible without causing

deterioration of the electrical characteristics or destruction, irrespective

of the supply voltage. However, this does not ensure normal circuit

operation.

Please note that the circuit operates normally only when the input voltage

is within the common mode input voltage range of the electric characteristics.

3) Maximum output voltage

Because the output voltage range becomes narrow as the output current

Increases, design the application with margin by considering changes in

electrical characteristics and temperature characteristics.

4) Short-circuit of output terminal

When output terminal and VCC or VEE terminal are shorted, excessive

Output current may flow under some conditions, and heating may destroy

IC. It is necessary to connect a resistor as shown in Fig.2, thereby

Protecting against load shorting.

5) Power supply (split supply / single supply) in used

Op-amp operates when specified voltage is applied between VCC and

VEE. Therefore, the single supply Op-Amp can be used for double supply

Op-Amp as well.

6) Power dissipation (Pd)

Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.

7) Short-circuit between pins and wrong mounting

Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other

components on the circuits, can damage the IC.

8) Use in strong electromagnetic field

Using the ICs in strong electromagnetic field can cause operation malfunction.

9) Radiation

This IC is not designed to be radiation-resistant.

10) Handing of IC

When stress is applied to IC because of deflection or bend of board, the characteristics may fluctuate due to piezoelectric

(piezo) effect.

11) Inspection on set board

During testing, turn on or off the power before mounting or dismounting the board from the test Jig.

Do not power up the board without waiting for the output capacitors to discharge. The capacitors in the low output

impedanceterminal can stress the device. Pay attention to the electro static voltages during IC handling, transportation,

and storage.

12) Output capacitor

When VCC terminal is shorted to VEE (GND) potential and an electric charge has accumulated on the external capacitor,

connected to output terminal, accumulated charge may be discharged VCC terminal via the parasitic element within the

circuit or terminal protection element. The element in the circuit may be damaged (thermal destruction). When using this IC

for an application circuit where there is oscillation, output capacitor load does not occur, as when using this IC as a voltage

comparator. Set the capacitor connected to output terminal below 0.1[μF] in order to prevent damage to IC.

connect

to Vicm

protection

resistor

Fig. 234The example of

application circuit for unused op-amp

Fig. 235The example of

output short protection