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
: P
OUT
(1) = 2.5W (Typ.)
(V
CC
= 9V, R
L
= 4Ω, f = 1kHz, THD = 10%)
: P
OUT
(2) = 4.6W (Typ.)
(V
CC
= 12V, R
L
= 4Ω, f = 1kHz, THD = 10%)
* Low Popping Noise at Power ON
* Small Quiescent Current
: I
Q
= 21mA (Typ.) (V
CC
= 15V, V
IN
= 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 © 2005 Unisonic Technologies Co.,LTD.
1
QW-R107-033.B
UA1029
BLOCK DIAGRAM
V
CC2
7
V
CC1
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
V
CC
20
V
Peak Output Current
I
O (peak)
2.5
A
15
W
Power Dissipation
P
D
mW/℃
120
Derated above Ta = 25℃
Operating Temperature
T
OPR
0 ~ +70
℃
Storage Temperature
T
STG
-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℃, V
CC
=9V, R
L
=4Ω, R
g
=600Ω, f=1kHz, R
F
=120Ω, 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
I
D
P
OUT(1)
P
OUT(2)
THD
G
V (1)
G
V (2)
R
IN
V
NO
RR
C.T.
V
11
, V
12
I
STN-BY
TEST CONDITIONS
V
IN
= 0
THD = 10%, V
CC
=9V
THD = 10%, V
CC
= 12V
P
OUT
= 0.4W/ch
R
F
= 120Ω, V
OUT
= 0.775Vrms (0dBm)
R
F
= 0, V
out
= 0.775Vrms (0dBm)
R
G
= 10kΩ, BW = 20Hz ~ 20kHz
R
G
= 600Ω, f
RIPPLE
= 100kHz
R
G
= 600Ω, amp1
2
V
OUT
= 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
kΩ
mVrms
dB
dB
mV
µA
43
1.0
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3
QW-R107-033.B
UA1029
TEST CIRCUIT
SW1
V
CC2
7
3
LINEAR INTEGRATED CIRCUIT
V
CC1
+
-
(*) C
IN
IN-1
-
+
10
R
f1
120
+ C1
47 F
-
9
+
-
(*) C
IN
-
+
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
R
L
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
R
L
13
Pre-GND1.
(*) This IC can be used without coupling capacitor (C
IN
).
If volume slide noise occurred by input offset voltage is undesirable, it needs to use the capacitor (C
IN
).
(**) 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 G
V
is obtained by R1, R2 and R
F
as below. By increasing R
F
, reduction of G
V
is possible. 40dB or
over in use is recommended.
R
F
+ R1 + R2
G
V
= 20 log
R
F
+ R1
Sine oscillation is probable as a result of feedback in crease.
INPUT
10/11
R
f
9/12
+
-
C
NF
47μF
R1
45Ω
+
AMP
-
R2
30kΩ
2/4
OUTPUT
Fig.1
2. Input stage
The input circuit of this IC is as shown as below.
PNP T
r
: 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
30kΩ
13/14
GND
TR2
TR3
30kΩ
2/4
TR1
To DRIVER
45Ω
To BIAS
NF
9/12
R
f
+
-
47μF
C
IN
Fig. 2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5
QW-R107-033.B
嵌入式系统
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