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TA8255AH

Toshiba
Part Number TA8255AH
Manufacturer Toshiba
Description MAX POWER 22W BTL x 4CH AUDIO POWER
Published Aug 13, 2005
Detailed Description TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8255AH Max Power 22W BTL × 4ch Audio Power IC TA8255AH ...
Datasheet PDF File TA8255AH PDF File

TA8255AH
TA8255AH

Overview
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8255AH Max Power 22W BTL × 4ch Audio Power IC TA8255AH The TA8255AH is 4ch BTL audio power amplifier for consumer application.
It is designed low distortion ratio for 4ch BTL audio power amplifier, Built−in stand−by function, muting function and junction temperature detection circuit.
Additionally, the AUX.
amplifier is built−in, it can make the beep signal etc.
Output to 2 channels (out1 and 4).
It contains various kind of protectors for car audio.
Features · High power : POUT (max) = 22 W (typ.
) (VCC = 13.
7 V, f = 1 kHz, RL = 4 Ω) Weight: 9.
8g (typ.
) : POUT (1) = 17 W (typ.
) (VCC = 14.
4 V, f = 1 kHz, THD = 10%, RL = 4 Ω) : POUT (2) = 14 W (typ.
) (VCC = 13.
2 V, f = 1 kHz, THD = 10%, RL = 4 Ω) · Low distortion ratio : THD = 0.
02% (typ.
) (VCC = 13.
2 V, f = 1 kHz, POUT = 3 W, RL = 4 Ω) · Low noise : VNO = 0.
10 mVrms (typ.
) (VCC = 13.
2 V, Rg = 0 Ω, GV = 34 dB, BW = 20~20 kHz) · Built−in stand−by switch function (pin(2)) · Built−in muting function (pin(1), (25)) · Built−in AUX.
amplifier from single input to 2 channels output (pin(16)) · Built−in junction temperature detection circuit (pin(24)) : Pin(24) DC voltage rises at about + 10 mV / °C in proportion to junction temperature.
· Built−in 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 1 2002-10-30 Block Diagram TA8255AH 2 2002-10-30 TA8255AH 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...


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