UTC-IC UA1029

UNISONIC TECHNOLOGIES CO.,LTD.
UA1029
LINEAR INTEGRATED CIRCUIT
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.
„
FEATURES
HSIP-14
* High Power
: POUT (1) = 2.5W (Typ.)
(VCC = 9V, RL = 4Ω, f = 1kHz, THD = 10%)
: POUT(2) = 4.6W (Typ.)
(VCC = 12V, RL = 4Ω, 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
„
*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
Packing
HSIP-14
Tube
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co.,LTD.
1
QW-R107-033.B
UA1029
„
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
IN1
10
VCC2
VCC1
7
3
NF1
9
-
RIPPLE
8
BIAS CIRCUIT
AND TSD
IN2
11
OUT1
6
Power-GND
2
OUT2
1
B.S.2
-
13
Pre-GND1.
14
Pre-GND2.
UNISONIC TECHNOLOGIES CO., LTD
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4
+
Ch-2
12
B.S.1
+
Ch-1
NF2
5
2
QW-R107-033.B
UA1029
„
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta = 25℃)
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=4Ω, Rg=600Ω, f=1kHz, RF=120Ω, unless otherwise specified.)
PARAMETER
Quiescent Current
Output Power
Total Harmonic Distortion
Voltage Gain
Input Resistance
Output Noise Voltage
Ripple Rejection Ratio
Cross Talk
SYMBOL
ID
POUT(1)
POUT(2)
THD
GV (1)
GV (2)
RIN
VNO
RR
C.T.
Input Offset Voltage
Stand-by Current
V11, V12
ISTN-BY
TEST CONDITIONS
VIN = 0
THD = 10%, VCC=9V
THD = 10%, VCC = 12V
POUT = 0.4W/ch
RF= 120Ω, VOUT = 0.775Vrms (0dBm)
RF= 0, Vout = 0.775Vrms (0dBm)
RG = 10kΩ, BW = 20Hz ~ 20kHz
RG = 600Ω, fRIPPLE = 100kHz
RG = 600Ω, amp1
2
VOUT = 0.775Vrms (0dBm)
SW1
OFF
UNISONIC TECHNOLOGIES CO., LTD
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MIN
2.0
43
TYP
25
2.5
4.6
0.2
45
56.5
30
0.3
-52
MAX
45
W
1.0
47
1.0
-50
30
1
UNIT
mA
%
dB
kΩ
mVrms
dB
dB
60
mV
µA
3
QW-R107-033.B
UA1029
„
LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT
VCC1
C11 (**)
100 F
+
-
+
SW1
-
VCC2
7
C10
1000
F
3
B.S.1
5
NF1
9
4
30k
C6
0.15 F
-
RIPPLE
BIAS CIRCUIT
AND TSD
8
+
-
OUT-1
RL
Power-GND
C3
47 F
(*) CIN
-
C2
47
+
NF2
12
45
OUT2
Ch-2
C9
+
+
IN2
11
120
+
6
2
-
-
IN-2
C8
1000 F
-
45
120
+ C1
47 F
OUT1
Ch-1
+
+
+
100
C5
F+
1
F
-
13
1000
OUT-2
F
C7
0.15 F
RL
B.S.2
30k
Pre-GND1.
-
-
Rf1
+ C4
100 F
IN1
-
10
-
(*) CIN
IN-1
14
Pre-GND2.
(*) 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
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4
QW-R107-033.B
UA1029
„
LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION
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
+
OUTPUT
+
R1
2/4
AMP
-
45Ω
R2
CNF
47μF
30kΩ
-
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
TR2
+
INPUT
10/11
30kΩ
TR3
2/4
To DRIVER
TR1
-
CIN
45Ω
30kΩ
13/14
To BIAS
GND
NF
9/12
Rf
+
47μF
-
Fig. 2
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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 measures
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
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
„
IQ, V3, V5 - VCC
RL=4Ω
Vin = 0
Ta = 25℃
12
10
40
8
V3, V5
6
20
4
IQ
2
0
0
4
8
12
16
20
SUPPLY VOLTAGE, VCC (V)
VOLTAGE GAIN, GV (dB)
60
GV - f
80
OUTPUT VOLTAGE, V3, V5 (V)
QUIESCENT CURRENT, IQ (mA)
80
VCC=9V
RL=4Ω
RF =120Ω
Ta = 25℃
70
60
50
40
30
20
10
0
30
100
300
1k
3k
10k
30k
100k
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