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TA8255AHQ の電気的特性と機能

TA8255AHQのメーカーはToshibaです、この部品の機能は「Max Power 22W BTL x 4ch Audio Power IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 TA8255AHQ
部品説明 Max Power 22W BTL x 4ch Audio Power IC
メーカ Toshiba
ロゴ Toshiba ロゴ 




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TA8255AHQ Datasheet, TA8255AHQ PDF,ピン配置, 機能
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
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TA8255AHQ pdf, ピン配列
TA8255AHQ
Caution And Application Method
(description is made only on the single channel.)
1. Voltage gain adjustment
This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can’t adjusted, but it makes the
device a space and total costs saver.
The voltage gain of amp. 1: GV1 = 0 dB
The voltage gain of amp. 2A, B: GV2 = 28 dB
The voltage gain of BTL connection: GV (BTL) = 6 dB
Therefore, the total voltage gain is decided by expression below.
GV = GV1 + GV2 + GV (BTL) = 0 + 28 + 6 = 34 dB
2. Standby SW function
By means of controlling pin(2) (standby terminal) to high
and low, the power supply can be set to on and off.
The threshold voltage of pin(2) is set at about 3V (typ.),
and the power supply current is about 100 µA (typ.) at the
standby state.
Control voltage of pin(2): V (SB)
Standby
Power
On Off
Off On
V (SB) (V)
0~2
3~VCC
Adjustage of standby SW
(1) Since VCC can directly be controlled to on or off by the
microcomputer, the switching relay can be omitted.
(2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for
switching
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2006-04-28


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TA8255AHQ 電子部品, 半導体
TA8255AHQ
The amplified signal from pin(16) is out to the out1 and 4.
7. Cross talk
The cross talk characteristics of the IC is not good between out1 and 2, out3 and 4.
So we recommend to use by below method.
Out1, 2
Out3, 4
Lch (or Rch)
Rch (or Lch)
And, please refer to below table in case of applying the AUX. in because it is out to out1 and 4.
ex)
Out1
Out2
Out3
Out4
Front
Rear
Rear
Fromt
Lch (or Rch)
Rch (or Lch)
AUX. out
AUX. out
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2006-04-28

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共有リンク

Link :


部品番号部品説明メーカ
TA8255AH

MAX POWER 22W BTL x 4CH AUDIO POWER IC

Toshiba
Toshiba
TA8255AHQ

Max Power 22W BTL x 4ch Audio Power IC

Toshiba
Toshiba


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