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UNISONIC TECHNOLOGIES CO.,LTD. UA1029
LOW FREQUENCY POWER AMPLIFIER
DESCRIPTION
The UTC UA1029 is a low frequency power amplier and developed for portable radio cassette tape recorder with power ON/OFF switch. The audio power IC has built-in two channels and thermal shut down protection circuit.
LINEAR INTEGRATED CIRCUIT
FEATURES
* High Power : POUT (1) = 2.5W (Typ.) (VCC = 9V, RL = 4, f = 1kHz, THD = 10%) : POUT(2) = 4.6W (Typ.) (VCC = 12V, RL = 4, f = 1kHz, THD = 10%) * Low Popping Noise at Power ON * Small Quiescent Current : IQ = 21mA (Typ.) (VCC = 15V, VIN = 0) * Soft Clip * Thermal Shut Down Protection * Best for Supply Voltage 9V, 12V * Operation Supply Voltage Range from 6V to 15V
HSIP-14
*Pb-free plating product number: UA1029L
PIN CONFIGURATION
PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PIN NAME B.S. 2 OUT 2 Vcc 1 OUT 1 B.S.1 Power-GND Vcc 2 RIPPLE NF1 IN 1 IN 2 NF 2 Pre-GND 1 Pre-GND 2
ORDERING INFORMATION Ordering Number Normal Lead Free Plating UA1029-H14-T UA1029L-H14-T Package HSIP-14 Packing Tube
www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co.,LTD.
1 QW-R107-033.B
UA1029
BLOCK DIAGRAM
VCC2 7 VCC1 3
LINEAR INTEGRATED CIRCUIT
5 IN1 NF1 10 9 + Ch-1 4
B.S.1
OUT1
RIPPLE
8
BIAS CIRCUIT AND TSD
6
Power-GND
IN2 NF2
11 12
+ Ch-2 1 B.S.2 2 OUT2
13 Pre-GND1.
14 Pre-GND2.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 QW-R107-033.B
UA1029
ABSOLUTE MAXIMUM RATINGS (Ta = 25 )
LINEAR INTEGRATED CIRCUIT
PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 20 V Peak Output Current IO (peak) 2.5 A 15 W Power Dissipation PD mW 120 Derated above Ta = 25 Operating Temperature TOPR 0 ~ +70 Storage Temperature TSTG -40 ~ +150 Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. The device is guaranteed to meet performance specification within 0 ~70 operating temperature range and assured by design from -20 ~85 .
ELECTRICAL CHARACTERISTICS
(Ta=25 , VCC=9V, RL=4, Rg=600, f=1kHz, RF=120, unless otherwise specified.) PARAMETER Quiescent Current Output Power Total Harmonic Distortion Voltage Gain Input Resistance Output Noise Voltage Ripple Rejection Ratio Cross Talk Input Offset Voltage Stand-by Current SYMBOL ID POUT(1) POUT(2) THD GV (1) GV (2) RIN VNO RR C.T. V11, V12 ISTN-BY TEST CONDITIONS VIN = 0 THD = 10%, VCC=9V THD = 10%, VCC = 12V POUT = 0.4W/ch RF= 120, VOUT = 0.775Vrms (0dBm) RF= 0, Vout = 0.775Vrms (0dBm) RG = 10k, BW = 20Hz ~ 20kHz RG = 600, fRIPPLE = 100kHz RG = 600, amp1 2 VOUT = 0.775Vrms (0dBm) SW1 OFF MIN 2.0 TYP 25 2.5 4.6 0.2 45 56.5 30 0.3 -52 -50 30 1 60 MAX 45 UNIT mA W 1.0 47 % dB k mVrms dB dB mV A
43
1.0
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 QW-R107-033.B
UA1029
TEST CIRCUIT
SW1 VCC2 7 3
LINEAR INTEGRATED CIRCUIT
VCC1 + (*) CIN IN-1 + 10 Rf1 120 + C1 47 F 9 + (*) CIN + 120 + IN-2 C2 47 F 30k C11 (**) 100 F + B.S.1 5 IN1 + NF1 45 Ch-1 30k C6 0.15 F Power-GND OUT1 4 + C4 100 F C8 + 6 OUT2 2 100 1 B.S.2 C5 F+ 14 Pre-GND2. C10 1000 F
1000 F RL
RIPPLE 8 C3 47 F
BIAS CIRCUIT AND TSD
IN2 11 NF2 12 45 + Ch-2 C9 + 1000 C7 0.15 F OUT-2 F RL
13 Pre-GND1.
(*) This IC can be used without coupling capacitor (CIN). If volume slide noise occurred by input offset voltage is undesirable, it needs to use the capacitor (CIN). (**) The condenser between the pin 8 and the GND (C11) is for reducing POP noise when the power ON/OFF switch (SW1) is set to ON/OFF.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 QW-R107-033.B
-
OUT-1
UA1029
APPLICATION INFORMATION
LINEAR INTEGRATED CIRCUIT
1. Adjustment of voltage gain The voltage gain GV is obtained by R1, R2 and RF as below. By increasing RF, reduction of GV is possible. 40dB or over in use is recommended. RF + R1 + R2 GV = 20 log RF+ R1 Sine oscillation is probable as a result of feedback in crease.
INPUT 10/11 Rf 9/12 + CNF 47 F R1 45 + AMP R2 30k 2/4 OUTPUT
Fig.1 2. Input stage The input circuit of this IC is as shown as below. PNP Tr: TR1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor. However, at Pin 10 and Pin 11 max 60 mV offset voltage is produced. Fig.2 illustrate the input circuit of UTC UA1029. A offset voltage of 60mV max is possible. TR1 is featured to eliminate the usage of coupling capacitor.
OUTPUT
INPUT + 10/11 30k 13/14 GND
TR2
TR3
30k
2/4
TR1
To DRIVER 45 To BIAS NF 9/12 Rf + 47 F
CIN
Fig. 2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 QW-R107-033.B
UA1029
LINEAR INTEGRATED CIRCUIT
3. Input voltage When the excessive signal is input, turning-up is produced in the clip waveform. 4. Oscillation preventive measure Mylar capacitor in use is strongly recommended to fulfill well handled of oscillation temperature and high frequency. 5. Power ON/OFF switch There is power ON/OFF switch at Pin 7. However, output power is changed by Pin 7 supply voltage when Pin 7 supply voltage is not same Pin 3 supply voltage, after referring to attached date, select Pin 7 supply voltage. 6. Thermal shut-down Protection The thermal shut-down circuit is built-in to dodge IC damage that result from the abnormal temperature rise during operating.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 QW-R107-033.B
UA1029
TYPICAL CHARACTERISTICS
IQ, V3, V5 - VCC
80
LINEAR INTEGRATED CIRCUIT
GV - f
80
QUIESCENT CURRENT, IQ (mA)
OUTPUT VOLTAGE, V3, V5 (V)
60
VOLTAGE GAIN, GV (dB)
RL=4 Vin = 0 Ta = 25
70 60 50 40 30 20 10 0 30 100 300 1k 3k
12 10
VCC=9V RL=4 RF =120 Ta = 25
40
8
V3, V5
20
6
IQ
4 2
0 0
4
8
12
16
20
10k
30k
100k
SUPPLY VOLTAGE, VCC (V)
FREQUENCY, f (Hz)
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 QW-R107-033.B

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