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What is TA8255AHQ?

This electronic component, produced by the manufacturer "Toshiba", performs the same function as "Max Power 22W BTL x 4ch Audio Power IC".


TA8255AHQ Datasheet PDF - Toshiba

Part Number TA8255AHQ
Description Max Power 22W BTL x 4ch Audio Power IC
Manufacturers Toshiba 
Logo Toshiba Logo 


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TA8255AHQ
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8255AHQ
Max Power 22W BTL × 4ch Audio Power IC
The TA8255AHQ is 4ch BTL audio power amplifier for consumer
application.
It is designed low distortion ratio for 4ch BTL audio power
amplifier, Builtin standby function, muting function and
junction temperature detection circuit.
Additionally, the AUX. amplifier is builtin, it can make the beep
signal etc. Output to 2 channels (out1 and 4).
It contains various kind of protectors for car audio.
Features
Weight: 9.8g (typ.)
High power
: POUT (max) = 22 W (typ.)
(VCC = 13.7 V, f = 1 kHz, RL = 4 )
: POUT (1) = 17 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 )
: POUT (2) = 14 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 )
Low distortion ratio
: THD = 0.02% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 3 W, RL = 4 )
Low noise
: VNO = 0.10 mVrms (typ.)
(VCC = 13.2 V, Rg = 0 , GV = 34 dB, BW = 20~20 kHz)
Builtin standby switch function (pin(2))
Builtin muting function (pin(1), (25))
Builtin AUX. amplifier from single input to 2 channels output (pin(16))
Builtin junction temperature detection circuit (pin(24))
: Pin(24) DC voltage rises at about + 10 mV / °C in proportion to junction temperature.
Builtin various protection circuit
: Thermal shut down, Over voltage, Out to GND, Out to VCC, Out to Out short
Operating supply voltage
: VCC (opr) = 9~18 V
Downloaded from Elcodis.com electronic components distributor
1
2006-04-28

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TA8255AHQ equivalent
TA8255AHQ
5. Muting function: Pin(1), pin(25)
By means of controlling pin(25) (mute control terminal) less than about 1.5 V, it can make the IC muting
condition as below. However, pin(25) must not be connected to a certain voltage, for example, VCC, VDD, Vref,
etc. In other words, pin(25) is inhibited to be pulled up, for instance fig 5 application.
The attenuation by the muting function is 70 dB (typ.). This muting is very smooth attenuating by the time
constant of pin(1): Smoothing.
Therefore, this function is suitable to the audio muting. The time for attenuation: Tatt is adjustable by changing
the capacitance of C3. But the tatt may influence the popping noise level.
So, please decide the time of tatt by testing on the units.
6. AUX. amplifier: Pin(16)
The pin(16) is for input terminal of AUX. amplifier.
The total gain is 0 dB by using of AUX. amplifier.
Therefore, the µcon can directly drive the AUX. amplifier.
Downloaded from Elcodis.com electronic components distributor
5
2006-04-28


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TA8255AHQ electronic component.


Information Total 15 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
TA8255AHThe function is MAX POWER 22W BTL x 4CH AUDIO POWER IC. ToshibaToshiba
TA8255AHQThe function is Max Power 22W BTL x 4ch Audio Power IC. ToshibaToshiba

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