 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| TA8258HQ TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8258HQ Dual Audio Power Amplifier The TA8258HQ is dual audio power amplifier for consumer applications. This IC provides an output power of 20 watts per channel (at VCC = 37 V, f = 1kHz, THD = 10%, RL = 8 ). It is suitable for power amplifier of music center. Features * * * * * * * * High output power: Pout = 20 W/channel (Typ.) (VCC = 37 V, RL = 8 , f = 1 kHz, THD = 10%) Low noise: Vno = 0.14 mVrms (Typ.) (VCC = 37 V, RL = 8 , GV = 34dB, Rg = 10 k, BW = 20 Hz~20 kHz) Very few external parts. Built in audio muting circuit. Built in thermal shut down protector circuit. Built in output shifted to GND protection circuit. (AC short) Available for using same PCB layout with: TA8200AH, TA8211AH, TA8216H Operation supply voltage range (Ta = 25C) : VCC (opr) = 15~42 V Weight: 4.04 g (typ.) The TA8258HQ is plated with lead-free lead finishes, but the silicon pellet is attached to a heatsink with lead-containing solder paste. About solderability, following conditions were confirmed * Solderability (1) Use of Sn-63Pb solder Bath * solder bath temperature = 230C * dipping time = 5seconds * the number of times = once * use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath * solder bath temperature = 245C * dipping time = 5seconds * the number of times = once * use of R-type flux 1 2004-04-06 TA8258HQ Block Diagram VCC 6 Ripple Filter IN1 AMP1 5 3 1 400 Pre-GND 400 9 VCC IN1 4 OUT1 7 R RL 20 k PW-GND 10 20 k AMP2 12 C C R OUT2 RL IN2 2 IN2 Mute. TC 8 Mute 11 Application Information 1. Voltage gain The closed loop voltage gain is determined by R1, R2. Input R + R2 G V = 20log 1 (dB) R2 4/2 5/1 R2 400 R1 20 k Output 7/12 20 k + 400 = 20log 400 = 34 (dB) R1 + R 2 + R 3 (dB) R2 + R3 Input Figure 1 G V = 20log When R3 = 220 GV 30 (dB) - is given. 4/2 R3 5/1 R2 400 R1 20 k Output 7/12 Figure 2 Toshiba has confirmed that the GV (min) is approximately 28 (dB) on a regular printed circuit board. However, if the value of R2 + R3 is larger, the feedback voltage increases and oscillation will start. Determine the value of R2 + R3 to ensure proper startup behavior under actual usage conditions. 2 2004-04-06 TA8258HQ 2. Muting (1) This product has an excellent muting system. Audio muting This IC is possible to make audio muting operation by using 11 pin muting terminal. Figure 3 shows the equivalent circuit in the muting circuit. By reducing the voltage of 11 pin to 2.8 V or less, Q1 will be ON. Also the base voltage of Q2 in the differential circuit that has Q2 and Q3 will be down. When Q2 is OFF, I2 and I5 dummy circuits will be operated, and it will shut down the input. However, the bias circuit is operating after muting, and it takes power supply current at no signal. 8 pin is the capacitor terminal for reducing the pop noise, and it can make the time constant longer by inserting the capacitor externally. If 11 pin is not used, connect 11 pin and 8 pin, then set the voltage abode 4 V. (2) IC internal muting at VCC OFF When VCC = 8 V or less at VCC off, the detection circuit at VCC off is operated. And the base voltage of Q1 is reduced and the muting is operated in IC. Dummy amp. Main amp. 9 VCC Reference voltage The detection circuit at VCC OFF Q1 100 I1 I2 I3 I4 I5 I6 I7 Q5 30 k 30 k Q2 Q3 Q6 The reference voltage is equal. Q4 Q7 Q8 Q9 20 k OUT 400 7/12 Q10 Q11 11 Mute 8 Mute. TC 2/4 IN 1/5 NF Figure 3 3. The Mounting Place of an Integrated Circuit This IC cannot withstand the strong electromagnetic fields generated by a CRT. These are likely to cause the device to exhibit malfunctions such as leakage. Please ensure that the IC is kept away from CRT. 4. Preventive Measures Against Oscillation To prevent oscillation, it is advisable to use capacitors made of polyester film, which have low temperature and frequency fluctuation characteristics, as C. The resistance R in series with C performs phase correction at high frequencies and improves the oscillation allowance. (1) Capacitor rating and type (2) PCB layout Note 1: Since the oscillation allowance varies according to the PCB layout, it is recommended that a standard Toshiba PCB be used as a reference for design. 3 2004-04-06 TA8258HQ 5. Heat-sink Be aware of the heat-sink capacity. Use a heat-sink that has high heat conduction. Note 2: Please connected a Heat-sink to GND potential, otherwise THD may deteriorate. 4 2004-04-06 TA8258HQ Standard PCB 12 1 IN-2 GND IN-1 TA8200AH/11AH/16H/58H TOSHIBA OUT2 OUT1 VCC (bottom view) 5 2004-04-06 TA8258HQ Maximum Ratings (Ta = 25C) Characteristics Supply voltage Output current (Peak/ch) Power dissipation Operation temperature Storage temperature Symbol VCC IO (peak) PD (Note 3) Topr Tstg Rating 50 3.5 25 -20 to 75 -55 to 150 Unit V A W C C Note 3: Derated above Ta = 25C in the proportion of 200 mW/C. Electrical Characteristics Characteristics Quiescent current Output power Total harmonic distortion Voltage gain Input resistance Ripple rejection ratio Output noise voltage Cross talk Mute on voltage Mute off voltage Mute ATT (unless otherwise specified VCC = 37 V, RL = 8 , Rg = 600 , f = 1 kHz, Ta = 25C) Symbol ICCQ Pout (1) Pout (2) THD GV RIN R.R. Vno C.T. Mute-on Mute-off ATT Test Circuit Vin = 0 THD = 10% THD = 1% Pout = 2 W Vout = 0.775 Vrms (0dBm) fripple = 100 Hz Vripple = 0.775 Vrms (0dBm) Rg = 10 k, BW = 20 Hz~20 kHz Rg = 10 k, Vout = 0.775 Vrms (0dBm) Mute on Mute off Vout = 0.775 Vrms Mute Test Condition Min 17 32.5 -48 -50 GND 3.7 -50 Typ. 75 20 15 0.05 34.0 30 -60 0.14 -60 -60 Max 130 0.2 35.5 0.3 1.4 10 Unit mA W % dB k dB mVrms dB V V dB Typ. DC Voltage of Each Terminal (VCC = 28 V, Ta = 25C) Terminal No. DC voltage (V) 1 2.5 2 2.8 3 GND 4 2.8 5 2.5 6 12.5 7 19.4 8 5.1 9 VCC 10 GND 11 4.8 12 19.4 6 2004-04-06 TA8258HQ Test Circuit 1000 F 47 F VCC 6 Ripple Filter 4 IN1 AMP1 5 3 1 400 Pre-GND 400 20 k AMP2 2.2 F 2 IN2 Mute. TC 8 10 F *1 20 k 9 2.2 F OUT1 1000 F 2.2 7 PW-GND 10 2.2 0.12 F 0.12 F 47 F 47 F RL RL OUT2 Mute 11 12 1000 F Vth 2.8 V - *1: The capacitor for reducing POP noise at mute ON. 7 2004-04-06 TA8258HQ THD - Pout 100 VCC = 37 V 50 R = 8 L 30 Filter 100: ~30 k 1 k: 400~30 k 10 k: 400~ 10 5 3 1 0.5 0.3 f = 10 kHz 0.1 100 Hz 0.05 0.03 0.1 0.3 0.5 1 1 kHz 100 50 30 10 5 3 RL = 8 f = 1 kHz Filter: 400~30 k THD - Pout (%) THD Total harmonic distortion Total harmonic distortion THD (%) VCC = 15 V 1 0.5 0.3 0.1 0.05 0.03 0.1 0.3 0.5 1 3 5 10 37 42 3 5 10 30 50 100 30 50 100 Output power POUT (W) Output power POUT (W) THD - f 10 5 3 RL = 8 Pout = 1 W VCC = 37 V Filter ~30 k (f = 20~800) 400~30 k (f = 1 k~2 k) 400~80 k (f = 4 k~6 k) 400~ (f = 8 k~40 k) 45 GV - f RL = 8 Vout = 0.775 Vrms VCC = 37 V (%) 40 THD 1 0.5 0.3 (dB) GV Voltage gain 1k 3k 10k 30k 100k 35 Total harmonic distortion 30 0.1 0.05 0.03 0.01 30 OUT2 OUT1 25 20 100 300 15 20 30 100 300 1k 3k 10k 30k 100k Frequency f (Hz) Frequency f (Hz) R.R. - f 0 -10 -20 -30 -40 -50 -60 -70 -80 OUT2 Rg = 620 RL = 8 Vripple = 0.775Vrms VCC = 37 V -30 R.R. - Rg fripple = 100 Hz RL = 8 Vripple = 0.775Vrms VCC = 37 V R.R. (dB) R.R. (dB) Ripple rejection ratio -40 Ripple rejection ratio -50 OUT1 -60 OUT2 OUT1 -70 30 100 300 1k 3k 10k 30k 100k -80 30 100 0.3 1k 3k 10k 30 100k Frequency f (Hz) Signal source resistance Rg () 8 2004-04-06 TA8258HQ C.T. - f 0 -10 -20 -30 -40 -50 -60 -70 -80 OUT2 OUT1 Rg = 620 k RL = 8 VCC = 37 V -30 C.T. - Rg f = 1 kHz RL = 8 VCC = 37 V Vout = 0.775Vrms -40 (dB) (dB) Cross talk C.T. -50 -60 Cross talk C.T. OUT2 OUT1 OUT1 OUT2 -70 OUT1 OUT2 -80 30 100 300 1k 3k 10k 30k 100k 30 100 300 1k 3k 10k 30k 100k Frequency f (Hz) Signal source resistance Rg () Vno - Rg 800 35 RL = 8 VCC = 37 V B.W = 20Hz~20kHz 30 f = 1 kHz RL = 8 THD = 10 % Pout - VCC (mVrms) 700 600 500 400 300 200 (W) Pout Output power OUT2 OUT1 30 100 300 1k 3k 10k 30k 100k 25 20 15 10 5 0 10 Output noise voltage VNO 100 0 5 10 15 20 25 30 35 40 45 Signal source resistance Rg () Supply voltage VCC (V) ICCQ, VOUT - VCC 120 RL = 8 60 25 PD - POUT 42 V f = 1 kHz RL = 8 (mA) (V) VOUT PD (W) 100 VCC = 37 V Vin = 0 40 20 37 V 15 ICCQ 80 Quiescent current 60 ICCQ 40 VOUT 20 Output DC voltage Power dissipation 10 20 5 15 V 0 0 10 20 30 40 50 0 60 0 0 5 10 15 20 25 Supply voltage VCC (V) Output power Pout (W) 9 2004-04-06 TA8258HQ ATT - Vmute 10 THD - Ta RL = 8 VCC = 37 V f = 1 kHz Pout = 2 W Mute ATT (dB) Total harmonic distortion -20 THD 0 Vout = 0.775Vrms VCC = 37 V (%) 0.2 0.1 0.05 0.03 f = 1 kHz RL = 8 -40 OUT2 OUT1 -60 -80 8 1 2 3 4 0.01 -40 -20 0 20 40 60 80 100 Mute control voltage Vmute (V) Ambient temperature Ta (C) R.R. - Ta 0 Rg = 620 -10 -20 -30 -40 -50 -60 -70 -80 -40 OUT2 RL = 8 Vripple = 0.775 Vrms VCC = 37 V fripple = 100 Hz 100 ICCQ - Ta VCC = 37 V RL = 8 R.R. (dB) (mA) ICCQ Quiescent current OUT1 80 Ripple rejection ratio 60 40 20 -20 0 20 40 60 80 100 0 -40 -20 0 20 40 60 80 100 Ambient temperature Ta (C) Ambient temperature Ta (C) PD MAX - Ta 30 (w) 1: INFINITE HEAT SINK 25 1 2: 4.1C/W A HEAT SINK 3: 9.5C/W A HEAT SINK PD MAX 20 2 15 3 Allowable power dissipation 10 5 0 0 25 50 75 100 125 150 175 Ambient temperature Ta (C) 10 2004-04-06 TA8258HQ Package Dimensions Weight: 4.04 g (typ.) 11 2004-04-06 TA8258HQ RESTRICTIONS ON PRODUCT USE * The information contained herein is subject to change without notice. 030619EBF * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. * This product generates heat during normal operation. However, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. The product is often the final stage (the external output stage) of a circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. 12 2004-04-06 |
Price & Availability of TA8258HQ
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |