TA8248 データシートの表示（PDF） - Toshiba

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TA8248

Bipolar Linear Integrated Circuit Silicon Monolithic(Low Frequency Power Amplifier)

Toshiba 

TA8248K

4. Oscillation preventive measures

For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended

to use polyester film capacitor having good characteristics for temperature and for high frequency.

Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor

after the temperature test to check the oscillation allowance.

In addition, as the position of the electrolytic capacitor has a remarkable influence on the oscillation,

connect C10 to VCC at the nearest possible position from power GND.

At using this application with the voltage gain reduced, oscillation is liable to be produced. Apply the

capacitor after checking enough for its capacity, type and mounting position.

Note 1: As the oscillation allowance varies according to the printed pattern layout, the standard printed board

of TOSHIBA is recommended to be referred to design it.

5. Power ON/OFF switch

There is power ON/OFF switch at pin8. However, output power is changed by pin8 supply voltage when

pin8 supply voltage is not same pin4 supply voltage, after referring to attached date, select pin8 supply

voltage.

6. Input voltage

When the excessive signal is input, turning-up is produced in the clip waveform.

The turning-up point is Vin = 300 mVrms (typ.) : VCC = 9 V, RL = 4 Ω, f = 1 kHz : Enough care must be

taken for this phenomenon.

Maximum Ratings (Ta = 25°C)

Characteristics

Symbol

Rating

Unit

Supply voltage

Output current (peak/CH)

Power dissipation

Operating temperature

Storage temperature

VCC

20

V

IO (peak)

2.5

A

PD (Note 2)

15.0

W

Topr

−20~75

°C

Tstg

−55~150

°C

Note 2: Derated above Ta = 25°C in the proportion of 120 mW/°C.

4

2002-04-05

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