TA8106F

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8106F Stereo Headphone Power Amplifier (1.5V USE) The TA8106F is a dual headphone amplifier IC designed for low voltage operation (1.5V, 3.0V), which is suitable for stereo headphone radio and radio cassette recorder equipments. This item can realize the low power dissipation and have high power output capability. Features · Condenser−less for input and output. · Condenser−less for bootstrap. · Built−in the muting function. · High power output capability according to adopting the matrix drive method. Po (1) = 14mW / ch (typ.) at Vin (R) = Vin (L) mode Po (2) = 5.5mW / ch (typ.) at Vin (R) = −Vin (L) mode Po (3) = 10.5mW / ch (typ.) at Vin (R) = 0 or Vin (L) = 0 (VCC = 1.5V, RL = 32Ω, f = 1kHz, THD = 10%) · Operating supply voltage range.: VCC (opr) = 0.9~5.0V (Ta = 25°C) Weight: 0.14g (typ.) Block Diagram TA8106F 1 2002-10-30 TA8106F Summary Of Matrix Drive Method Though the BTL is usually used to obtain enough power at low voltage, it can not be used for the headphone amplifier (especially, 1.5V use), which has only one left-and right common line. Then a new modified BTL drive method is developed, which is called “matrix drive method”. It has only one common line. Fig.1 shows the principle. The input signals of the audio frequency are applied to the terminal of L / R. These are transformed by the matrix converter into the outputs, as following; V(a) = L - αR V(b) = - α (L + R) V(c) = R - αL L, R: ...