datasheet for TA8227APG-D12-H-T by Unisonic Technologies Company Limited
UNISONIC TECHNOLOGIES CO., LTD
TA8227AP
LINEAR INTEGRATED CIRCUIT
LOW FREQU EN CY POWER
AM PLI FI ER
̈
DESCRI PT I ON
The UTC
TA8227AP
is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON / OFF switch.
Thermal shut down protection circuit is built in.
̈
FEAT U RES
* Wide operating supply voltage: V
CC
=5~12V
* Low popping noise at power ON
* Best for supply voltage 9V
* Output power
P
OUT
=2.5W/CH at Vcc=9V, R
L
=4
Ω, f=1kHz, THD=10%
P
OUT
=3.0W/CH at Vcc=9V, R
L
=3
Ω, f=1kHz, THD=10%
* Soft Clip
* Built-in thermal shut-down protection circuit
* Stand-by switch
̈
ORDERI N G I N FORM AT I ON
Ordering Number
Lead Free Plating Halogen Free
Package Packing
TA8227APL-D12-H-T TA8227APG-D12-H-T DIP-12H Tube
TA8227APL-S20-T TA8227APG-S20-T SOP-20 Tube
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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TA8227AP
LINEAR INTEGRATED CIRCUIT
̈
PI N CON FI GU RAT I ON
V
CC2
OUT1
B.S.1
PRE-GND
NF1
IN1
1
2
3
12
11
10
V
CC1
OUT2
B.S.2
V
CC2
OUT1
B.S.1
PW-GND
PW-GND
3
4
1
2
PW-GND
5
6
7
16
15
14
4 9 RIPPLE
PW-GND
PRE-GND
8 13
5
8 NF2 NF1 9 12
6 7
IN2 IN1 10 11
FOR DIP-12H FOR SOP-20
20
19
18
17
V
CC1
OUT2
B.S.2
PW-GND
PW-GND
PW-GND
PW-GND
RIRPLE
NF2
IN2
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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TA8227AP
LINEAR INTEGRATED CIRCUIT
̈
BLOCK DI AGRAM
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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TA8227AP
LINEAR INTEGRATED CIRCUIT
̈
ABSOLU T E M AX I M U N RAT I N GS
(T
A
=25
°C)
Supply Voltage
Output Current (peak / CH)
Power Dissipation
Operating Temperature
Storage Temperature
V
CC
20 V
I
O(PEAK)
2.5 A
P
D
4.0
T
OPR
-25~+75
°C
T
STG
-55~+150
°C
̈
ELECT RI CAL CH ARACT ERI ST I CS
(T
A
=25
°C, V
CC
=9V, R
L
=4
Ω, R
G
=600
Ω, f=1kHz, unless otherwise specified)
PARAMETER SYMBOL
Quiescent Current I
CCQ
MIN UNIT
V
IN
=0
Output Power
Total Harmonic Distortion
Voltage Gain
Input Impedance
Output Noise Voltage
Ripple Rejection Ratio
Cross Talk
Input Offset Voltage
Standby Current
P
P
OUT
OUT
(1)
(2)
THD=10%
THD=10%, RL=3
Ω
2.0
2.5
3.0
W
THD P
OUT
=0.4W/CH
Gv1 Rf=120
Ω,V
OUT
=0.775Vrms (0 dBm) 43 45 47 dB
Gv2 Rf=0, =0.775Vrms (0 dBm)
R
IN eN
R.R.
C.T
Rg=10k
Ω,BW=20Hz ~20kHz
Rg=600
Ω, fripple=100Hz
Rg=600
Ω,V
OUT
=0.775Vrms (0 dBm)
56.5 dB
30 k
Ω
0.3 1.0 mVrms
-52
-50 dB dB
V6, V7
1stb Sw1:OFF
30
1
60
50 mV
A
̈
T Y P. DC V OLT AGE OF EACH T ERM I N AL (V
CC
=9 V , T
A
=2 5
°
C )
DC VOLTAGE (V) V
CC
4.5 8.7 GND 0.7 0.03
0.03
0.7 5.0 8.7 4.5 V
CC
̈
APPLI CAT I ON I N FORM AT I ON AN D APPLI CAT I ON M ET H OD
1. Adjustment of voltage gain
The voltage gain Gv is obtained as follows by R1, R2 and Rf in Fig.1
G
V
=
20 log
R f
R
+
f
R
+
1
+
R
1
R
2
When Rf=0
Ω
When Rf=120
Ω
Gv=56.5 dB (Typ.)
Gv=45 dB (Typ.)
By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce oscillation, it is recommended to use this at 40dB or over.
INPUT
6/7
(10/11)
C
NF
47μF
+
R f
5/8
(9/12)
R1
45Ω
+
-
Ch-2
R2
30kΩ
OUTPUT
2/11
(2/19)
( ): For SOP-20 Package
Fig.1
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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TA8227AP
LINEAR INTEGRATED CIRCUIT
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APPLI CAT I ON I N FORM AT I ON AN D APPLI CAT I ON M ET H OD(Cont .)
2. Thermal shut-down circuit
The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the abnormal temperature rise when the heat radiation is insufficient.
The operation temperature is set at radiation Fin temperature 175
°C (Typ.)
At this temperature or over the bias is interrupted to prevent the destruction of IC.
3. Input stage
The input circuit of this IC is as shown in fig.2. PNP Tr : Q1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor.
However, at pin 6 and pin 7, max 60mV offset voltage is produced.
Application after checking volume slide noise is recommended.
For cutting the volume slide noise, insert the input capacitor: CIN in series to interrupt the DC component.
4. Oscillation preventive measures
For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended to use polyester film capacitor having good characteristics for temperature and for high frequency.
Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor after the temperature test to check the oscillation allowance.
In addition, as the position of the electrolytic capacitor has a remarkable influence on the oscillation, connect C10 to Vcc at the nearest possible position from power GND.
At using this application wth the voltage gain reduced, oscillation is liable to be produced. Apply the capacitor after checking enough for its capacity, type and mounting position.
5. Power ON / OFF switch
There is power ON / OFF switch at Pin1. However, output power is changed by Pin1 supply voltage when Pin1 supply voltage is not same Pin12 supply voltage, after referring to attached date, select Pin1 supply voltage.
6. Input voltage
When the excessive signal is input, turning-up is produced in the clip waveform. The turning-up point is
V
IN
=300mVrms (Typ.) : V
CC
=9V, RL=4
Ω, f=1kHz : Enough care must be taken for this phenomenon.
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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T EST CI RCU I T
Note 1: This IC can be used without coupling capacitor (C
IN
). If volume slide noise noise occurred by input offset voltage is undesirable, it needs to use the capacitor (C
IN
).
Note 2: The condenser between the pin4 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
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T Y PI CAL CH ARACT ERI ST I CS
I
CCQ2
, V
2
, V
11
V
CC2
12
10
V
CC1
=12V
V
IN
=0
Ta=25°C
8
I
CCQ
12
10
30
10
THD P
OUT
8 5
3
V
CC1
=9V
R
L
=4
F=1kHz
R
NF
=120
Ta=25°C
6V
7V
8V
6
6
V
CC2
=5V
9V
1
4
V
2
, V
11
4
0.5
0.3
2
2
0
0 2 4 6 8 10 12
14
0
Supply Voltage, V
CC2
(V)
0.1
0.01
0.03
0.1
0.3
1
Output Power, P
OUT
(W)
3
10
THD Ta
0.5
0.4
0.3
0.2
0.1
0
-40 -20 0 20 40 60 80
100
Ambient Temperature, Ta (°C)
I
CCQ2
, V
2
, V
11
V
CC2
50
40
30
V
2
, V
11
20
I
CCQ
10
0
-40 -20 0 20 40 60
Ambient Temperature, Ta (°C)
80
I
CCQ2
, V
OUT
V
CC
80
60
40
20
V
OUT
I
CCQ
0
0
5 10 15
Supply Voltage, V
CC2
(V)
20
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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T Y PI CAL CH ARACT ERI ST I CS(Cont .)
THD P
OUT
100
30
V
CC
=9V
R
L
=4
R
NF
=120
100
30 f=1kHz
R
L
=4
R
NF
=120
THD P
OUT
10
10
3
3
V
CC
=6V f=10kHz
1
1
9V
0.3
1kHz
100Hz
0.3
0.1
0.01
0.1
0.3
1 3
Output Power, P
OUT
(W)
10 30
0.1
0.01
0.1
0.3
1 3
Output Power, P
OUT
(W)
10
G
V
- f
80
60
V
CC
=9V
R
L
=4
R
NF
=120
40
0
-20
V
CC
=9V
R
L
=4
Rg=600
R
NF
=120
V
OUT
=0.775Vrms
(0dBm)
C.T. - f
-40
20
0
30 100 1k
Frequency, f (Hz)
10k
R.R. - Rg
0
-20
V
CC
=9V
R
L
=4
R
NF
=120 f=100Hz
100k
-60
-80
30 100 1k
Frequency, f (Hz)
10k 100k
-40
-60
-80
30 100 1k 10k
Signal Source Resistance Rg (
Ω
)
100k
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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LINEAR INTEGRATED CIRCUIT
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T Y PI CAL CH ARACT ERI ST I CS(Cont .)
V
CC
- P out
4
3
6
5 f = 1kHz
THD = 10%
R
L
= 6Ω
8Ω
2
1
4Ω
0
0 5 7 9 11 13 15
Supply Voltage V
CC
(V)
17 19
V
CC
= 12V
P
D
- P out
3
2
5
4
9V
R
L
= 4Ω f = 1kHz
1
0
0 1 2 3 4 5
Output Power Pout (W)
6 7
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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LINEAR INTEGRATED CIRCUIT
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
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QW-R107-021,E
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