TA8227P

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8227P Low Frequency Power Amplifier TA8227P is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON/OFF switch. Because of the parts reduction and DIP (Dual Inline Package), space merit is remarkable. Thermal shut down protection circuit is built in. Features · High power : Pout = 2.5 W/CH (typ.) (VCC = 9 V, RL = 4 Ω, f = 1 kHz, THD = 10%) Weight: 1.4 g (typ.) : Pout = 3.0 W/CH (typ.) (VCC = 9 V, RL = 3 Ω, f = 1 kHz, THD = 10%) · Voltage gain : Gv = 45.0dB (typ.) (Rf = 120 Ω, f = 1 kHz) : Gv = 56.5dB (typ.) (Rf = 0 Ω, f = 1 kHz) · Small quiescent current : ICCQ = 21 mA (typ.) (VCC = 9 V, Vin = 0) · Ripple rejection ratio : R.R. = −52dB (typ.) (VCC = 9 V, fripple = 100 Hz, Rg = 600 Ω) · Cross Talk : C.T. = −50dB (typ.) (VCC = 9 V, f = 1 kHz, Rg = 600 Ω) · Output noise voltage : Vno = 0.3 mVrms (typ.) (VCC = 9 V, Rg = 10 kΩ, BW = 20 Hz~20 kHz) · Stand-by switch · Soft clip · Built-in thermal shut down protection circuit · Operation supply voltage range: VCC (opr) = 5~12 V (Ta = 25°C) · Low popping noise at power ON · Best for supply voltage 9 V TA8227P 1 2002-03-05 Block Diagram TA8227P Application Information and Application Method 1. Adjustment of voltage gain The voltage gain Gv is obtained as follows by R1, R2 and Rf in Figure 1. Gv = 20 log Rf + R1 + R2 Rf + R1 When Rf = 0 Ω Gv = 56.5dB (typ.) When Rf = 120 Ω Gv = 45...