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TA7376P Dataheets PDF



Part Number TA7376P
Manufacturers Toshiba Semiconductor
Logo Toshiba Semiconductor
Description AUDIO POWER AMPLIFIER
Datasheet TA7376P DatasheetTA7376P Datasheet (PDF)

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA7376P Audio Power Amplifier TA7376P The TA7376P is dual audio power amplifier for portable products. Features · Low operating supply voltage: VCC = 1.8~6V (Ta = 25°C) · Low quiescent current: ICCQ = 5.3mA (VCC = 4.5V) · Including ripple filter circuit: RR = −42dB (CRIP = 10µF, fr = 100Hz) · Voltage gain: GV = 39.5dB (typ.) · Very few external parts and small package. (SIP−9pin) Weight: 0.92g (typ.) Output Power Table (THD = 10%,.

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TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA7376P Audio Power Amplifier TA7376P The TA7376P is dual audio power amplifier for portable products. Features · Low operating supply voltage: VCC = 1.8~6V (Ta = 25°C) · Low quiescent current: ICCQ = 5.3mA (VCC = 4.5V) · Including ripple filter circuit: RR = −42dB (CRIP = 10µF, fr = 100Hz) · Voltage gain: GV = 39.5dB (typ.) · Very few external parts and small package. (SIP−9pin) Weight: 0.92g (typ.) Output Power Table (THD = 10%, f = 1kHz, Stereo, Typ. value) VCC 3V 4.5V 6V Load RL = 32Ω 21mW 56mW 120mW RL = 16Ω 38mW 100mW 230mW RL = 8Ω 65mW 180mW 400mW RL = 4Ω 100mW 300mW ― Block Diagram Vin 1 Vin 2 IN1 1 2 NF1 IN2 9 8 NF2 VCC 4 RF RF 7 CH - 1 OUT1 3 GND 5 CH - 2 OUT2 6 VCC RL RL 1 2002-10-30 TA7376P Application Note 1. Input stage The input stage of power amplifier (equivalent circuit) is comprised of a PNP differential pair (Q2 and Q3) preceded by a PNP emitter follower (Q1) which allows DC referencing of the source signal to ground. This eliminates the need for an input coupling condenser. However, in case the brush noise of volume becomes a problem, provide serially a coupling condenser to the input side. 2. Adjustment of voltage gain The voltage gain is fixed at GV≒40dB by the resistors (R1 and R2) in IC, however, its reduction is possible through adding Rf as shown in Fig.2. In this case, the voltage gain is obtained by the following equation. GV ≒ 20log R1 + R2 + R1 + Rf Rf It is recommended to use this IC with the voltage gain of GV≒30dB or over. 3. Ripple rejection ratio (RR) If the TA7376P does not have the ripple filter condenser (CRIP), the ripple rejection ratio is as follow. RR = -25dB (typ.) (CNF = 22µF, fr = 100Hz) RR = -34dB (typ.) (CNF = 100µF, fr = 100Hz) If the ripple filter condenser is connected to the pin(7), the ripple rejection ratio is improved as following the DATA (RR-fr). VCC 4 Vin 1 / 9 GND 5 30 kΩ Q2 Q3 R2 R1 Q1 Q4 Q5 Fig.1 2/8 NF Vin 1 / 9 Rf R1 2/8 510 Ω R2 51 kΩ Fig.2 VCC 4 4. Pop sound It must be connected the condenser (CRIP) from pin(7) to GND, if the "Pop" sound is harshness. In this case, the value is 10µF something. CRIP 7 RF 1/9 2/8 CNF Fig.3 2 2002-10-30 5. Phase-compensation The purpose of condenser C1 is to prevent oscillation. These condenser need to be small temperature coefficient and excellent frequency characteristic. So ceramic condenser is unsuitable. Condenser C2 is rather large value than 10µF and GND line is better to short and wide lay-out so that the some common impedance are decreased. Maximum Ratings (Ta = 25°C) TA7376P 4 VCC C2 3/6 OUT GND 5 C1 VCC RL Characteristic Symbol Rating Unit Supply voltage Power dissipation Operation temperature Storage temperature VCC PD (Note) Topr Tstg 8 950 -25~75 -55~150 V mW °C °C (Note) Derated above Ta = 25°C in the proportion of 7.6mW / °C. Fig.4 Electrical Characteristics (unless otherwise specified, VCC = 4.5V, f = 1kHz, Rg = 600Ω, RL = 4Ω, Ta = 25°C) Characteristic Quiescent current Output power Total harmonic distortion Symbol ICCQ Pout THD Test Circuit Test Condition Min. Typ. Vin = 0, VCC = 3V ― 4.9 ― Vin = 0 ― 5.3 Vin = 0, VCC = 6V ― 5.7 VCC = 3V, RL = 4Ω, THD = 10% 84 100 VCC = 3V, RL = 32Ω, THD = 10% ― 21 ― VCC = 4.5V, RL = 4Ω, THD = 10% 250 300 VCC = 4.5V, RL = 8Ω, THD = 10% ― 180 VCC = 6V, RL = 8Ω, THD = 10% ― 400 ― Pout = 100mW ― 0.11 Voltage gain Output noise voltage Ripple rejection ratio Cross talk Input resistance GV ― Vout = 0.775Vrms 37.5 39.5 Vno ― Rg = 10Ω, BPF = 20Hz~20kHz ― 0.21 CRIP = 10µF, CNF = 22µF RR ― fr = 100Hz, Vr = 0.38Vrms CRIP = OPEN, CNF = 100µF fr = 100Hz, Vr = 0.38Vrms ― -42 ― -34 CT ― Vout = 0.775 Vrms ― -60 RIN ― ― ― 30 Max. Unit 8.0 10.0 mA 14.0 ― ― ― mW ― ― 1.0 % 41.5 0.7 dB mVrms -30 dB ― -40 dB ― kΩ Quiescent Terminal DC Voltage (VCC = 4.5V, Ta = 25°C, typ. value) [Unit: V] Terminal Voltage (V) 1 0.003 2 0.59 3 1.98 4 4.5 56789 0 1.98 1.28 0.59 0.003 3 2002-10-30 Test circuit Vin 1 Vin 2 22 µF IN1 1 2 NF1 IN2 9 8 NF2 30 kΩ 30 kΩ VCC 4 RF RF 7 CH − 1 OUT1 3 GND 5 CH − 2 OUT2 6 2.2 Ω 2.2 Ω 0.1 µF 0.1µF CRIP 10 µF 10 µF VCC (Note) 470 µF RL 470 µF RL 22 µF (Note) CRIP is shown in item 3 and 4 of Application Note. TA7376P Output DC voltage V3 , V6 (V) Quiescent current ICCQ (mA) 7 14 6 12 ICCQ , V3 , V6 – VCC Ta = 25 °C 5 10 48 36 24 ICCQ V3 , V6 12 00 1 2 3 4 5 67 Supply voltage VCC (V) Quiescent current ICCQ (mA) Output DC voltage V3 , V6 (V) ICCQ , V3 , V6 – Ta 6 ICCQ 5 4 3 V3 , V6 2 1 VCC = 4.5 V RL = 4 Ω 0 −20 0 20 40 60 Ambient temperature Ta (°C) 80 4 2002-10-30 Total harmonic distortion THD (%) 50 30 VCC = 3 V f = 1 kHz Ta = 25 °C 10 5 3 RL = 32 Ω 1 0.5 0.3 THD – Pout 16 8 4 0.1 0.05 0.005 0.01 0.03 0.05 0.1 Output power Pout (W) 0.3 Total harmonic distortion THD (%) TA7376P 50 30 10 5 3 RL = 32 Ω THD – Pout 16 8 4 1 0.


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