 |
|
| 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: |
| UTC TA7368P DESCRIPTION LINEAR INTEGRATED CIRCUIT 0.6W AUDIO POWER AMPLIFIER The UTC TA7368P is suitable for the audio power amplifier of portable cassette tape recorder and radio. FEATURES *Very few external components( only three capacitors) *Low quiescent current *High voltage gain: Gv=40dB SIP-9 BLOCK DIAGRAM Vcc 2 Ripple Rejection 9 Input 1 7 Output RL 3 Negative Feedback 4 Phase 5 Pre GND 6 Power GND UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R107-009,A UTC TA7368P PARAMETER Supply Voltage Power Dissipation Operating Temperature LINEAR INTEGRATED CIRCUIT SYMBOL VCC PD TOPR ABSOLUTE MAXIMUN RATINGS (Ta=25C) VALUE 14 900 -20 ~ 75 -55 ~ 150 UNIT V mW C C Storage Temperature TSTG Note: Derated Ta>25C, in the proportion of 7.2mW/C ELECTRONIC CHARACTERISTICS(Ta=25C, Vcc=6V, f=1kHz, Rg=600,RL=4, unless otherwise specified) PARAMETER Quiescent Circuit Current Voltage Gain SYMBOL ICCQ GV TEST CONDITIONS VCC=3V,Vin=0 VCC=6V,Vin=0 VCC=9V,Vin=0 Vin=0.5mVrms VCC=3V,RL=4,THD=10% VCC=6V,RL=4,THD=10% MIN TYP 5.5 6.6 7.5 MAX UNIT mA 37 500 300 800 450 40 120 720 450 1100 610 0.3 0.2 25 27 43 dB Output Power Pout VCC=6V,RL=8,THD=10% VCC=9V,RL=8,THD=10% VCC=9V,RL=16,THD=10% mW Total Harmonic Distortion Output Noise Voltage Ripple Rejection Input Resistance THD Vno RR Rin Pout=100mW Rg=10k,BPF=20Hz~20kHz fr=100Hz,Vr=0.3Vrms,Crip=0 1 0.5 % mVrms dB k TERMINAL DC VOLTAGE Pin No. Value(V) 1 0 2 2.4 3 0.62 4 0.64 5 0 6 0 7 2.61 8 NC 9 6 PRECAUTION FOR APPLICATION 1. Input stage (Figure 1) The input stage of power amplifier 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 GND. This eliminates the need for an input coupling capacitor. However, in case the brush noise of volume becomes a problem, provide serially a coupling capacitor to the input side. 2. Adjustment of the voltage gain (figure 2) The voltage gain is fixed at Gv=40dB by the resistors( R4 and R5) in IC. Its reduction is possible through adding Rf as shown in Figure 2. In this case, the voltage gain is obtained by the following equation: Gv=20log(R5+R4+Rf)/(R4+Rf). It is recommended to use this IC with the voltage gain of Gv=28dB or over. UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R107-009,A UTC TA7368P Pin 9 Q2 Q3 LINEAR INTEGRATED CIRCUIT R5 Pin 7 1 R4 R4 Pin 1 Q1 R1 27| Pin 5 Q4 Rf Pin 3 D1 3 R5 Crip 2 Figure 1 Figure 2 Figure 3 3. Ripple rejection (Figure 3) Adding Crip, to the ripple terminal 2 as shown in Figure 3, the ripple rejection ratio is improved from -25dB to -45dB. 4. Power dissipation Casre should be taken to use IC below maximum power dissipation because it may be over maximum rating depending on operating condition. Pd=900mW (Ta=25C) 5. Phase-compensation Small temperature coefficient and excellent frequency characteristics is needed by capacitor below: *Oscillation preventing capacitor for power amplifier output *Bypass capacitor for ripple filter *Capacitor between Vcc and GND TEST CIRCUIT Vcc 100 F 2 Ripple Rejection 9 Input 1 27k 90 10k 470 F Output 7 RL 3 Negative Feedback 100 F 4 Phase 5 6 Pre Power GND GND UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R107-009,A |
Price & Availability of UTCTA7368P
 |
|
|
|
|
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] |