TA8207K

TA8207K
UNISONIC TECHNOLOGIES CO., LTD
TA8207K
LINEAR INTEGRATED CIRCUIT
LOW FREQUENCY POWER
AMPLIFIER
DESCRIPTION
The UTC TA8207K is an audio power IC with built-in two channels
and thermal shut down protection circuit.
The IC is developed for portable radio cassette tape recorder with
power ON/OFF switch.
FEATURES
FSIP-12H
*High Power : POUT=2.5W / CH (Typ.)
(VCC=9V, RL=4Ω, f=1KHz, THD=10%)
: POUT=4.6W / CH (Typ.)
(VCC=12V, RL=4Ω, f=1KHz, THD=10%)
*Low Popping Noise at Power ON
*Small Quiescent Current: ICCQ=21mA (Typ.)
(VCC=9V, VIN=0)
*Soft Clip
*Built-in Thermal Shut Down Protection Circuit
*Bast for Supply Voltage 9V, 12V
*Operation Supply Voltage Range: VCC=6-15V
*Pb-free plating product number: TA8207KL
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
TA8207K-F12-T
TA8207KL-F12-T
Package
Packing
FSIP-12H
Tube
TA8207KL-F12-T
(1)Packing Type
(1) T: Tube
(2)Package Type
(3)Lead Plating
(2) F12: FSIP-12H
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
Supply Voltage
Output Current (Peak / CH)
Power Dissipation
Operating Temperature
Storage Temperature
SYMBOL
VCC
IO(PEAK)
PD
TOPR
TSTG
VALUE
20
2.5
12.5
-20 to + 75
-55 to + 150
UNIT
V
A
W
°C
°C
ELECTRICAL CHARACTERISTICS
(VCC=9V, RL=4Ω, Rg=600Ω, f=1kHz, Ta=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Quiescent Current
ICCQ
VIN=0
POUT(1)
THD=10%
Output Power
POUT(2)
VCC=12V,THD=10%
Total Harmonic Distortion
THD
POUT=0.4W / ch
Rg=10kΩ
Output Noise Voltage
eN
BW=20Hz ~ 20kHz
Input Resistance
RIN
Rf=120Ω
GV(1)
VOUT=0.775Vrms
Voltage Gain
GV(2)
Rf=0, VOUT=0.775Vrms
Rg=600Ω
Ripple Rejection Ratio
RR
Fripple=100Hz
Rg=600Ω, Amp1<->2
Cross Talk
CT
VOUT=0dBm, f=1kHz
Input Offset Voltage
V6,V7
Stand-by Current
ISTDBY
SW1->OFF
MIN
2.0
TYP
21
2.5
4.6
0.2
MAX
45
1.0
UNIT
mA
W
W
%
0.3
1.0
mVrms
30
43
45
kΩ
47
dB
56.5
dB
52
dB
50
dB
30
1
60
mV
µA
10
4.5
11
8.7
12
VCC
TYPICAL DC VOLTAGE OF EACH TERMINAL (VCC=9V, Ta=25°C)
TERMINAL NO.
DC Voltage
1
8.7
2
4.5
3
VCC
4
5.0
5
0.7
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6
0.03
7
0.03
8
0.7
9
GND
2 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT
VCC1
-
C11
100μF
+
+
-
*2
SW1
VCC2
3
+ -
6
+
R11
120Ω
45Ω
5
+
ch - 1
C4
100μF
2
C6
0.15μF
30kΩ
RIPPLE
C8
1000μF
+ -
OUT - 1
-
+
RL
BIAS CIRCUIT THE
RMAL SHUT DOWN
PROTECTION CIRCUIT
-
*1 CIN
IN2
45Ω
8
+
R12
120Ω
C9
1000μF
+ -
+
ch - 2
10
C5
100μF
11
B.S.2
-
OUT - 2
-
+ -
7
+
C3
47μF
NF2
-
C2
47μF
B.S.1
NF1
4
IN - 2
1
-
*1 CIN
C1
100μF
12
+
IN - 1
IN1
C10
1000μF
C7
0.15μF
RL
30kΩ
9
GND
REMARK: 1.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).
2.The condenser between the pin3 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
3 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION
1. ADJUSTMENT OF VOLTAGE GAIN
The voltage gain GV is obtained as follows by R1,R2 and Rf in Fig.1.
INPUT
6/7
5/8
-
CNF
+
47 μ F
Rf
OUTPUT
+
R1
45Ω
AMP
2/10
R2
30kΩ
Rf+R1+R2
Gv=20λog
Rf+R1
When Rf=0Ω
Gv=56.5dB(typ.)
When Rf=120Ω
Gv=45dB(typ.)
Reduction of Gv is possible by increasing Rf. However, it is recommended to use this at 40dB or over since the
feedback increase is liable to produce oscillation.
2. THERMAL SHUTDOWN CIRCUIT
The built-in thermal shut-down circuit can prevent the destruction of IC that abnormal temperature rise when the
heat radiation is insufficient. The operation temperature is set at radiation fin temperature 175℃, at this temperature
or over the bias is interrupted to prevent the destruction of IC.
3. INPUT STAGE
Below circuit shows the input circuit of this IC.
OUTPUT
Q2
INPUT
GND
to BIAS
NF 5/8
- + Rf
9
Q1
47μF
6/7
C IN
45Ω
+
2/10
to DRIVER
30KΩ
-
30KΩ
Q3
It is possible that without input coupling capacitor in the input circuit by use a PNP Transistor,Q1. However, 60mV
max offset voltage is produced at pin (6) and (7). Application after checking volume slide noise is recommended. In
order to cut the volume slide noise, insert the input capacitor(CIN) in series to interrupt the DC component.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION(Cont.)
4. OSCILLATION PREVENTIVE MEASURES
For oscillation preventive capacitor C6 and C7 between the output terminal and GND, polyester film capacitor is
recommended due to good characteristics for temperature and for high frequency. it is better that use this capacitor
after the temperature test to check the oscillation allowance due to the characteristics of the capacitor is liable to
be influenced by the temperature.Besides, as the position of the electrolytic capacitor has remarkable influence on
the oscillation, connect C10 to VCC as close power GND as possible.
At using this application with 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 (3) pin. However, output power is changed by (3) pin supply voltage when(3) pin
supply voltage I not same(12) pin supply voltage, after referring to attached date, select(3) pin supply voltage.
6. INPUT VOLTAGE
When the excessive signal is input, turning-up is produced in the clip waveform. The turning-up point is
VIN=300mVrms (typ.): VCC=9V, RL=4Ω, f=1kHz: Enough care must be taken for this phenomenon.
7. GND LINE
GND pin is not separated for pre-GND and for PW-GND. That is liable to cause distortion and cross talk worse.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
ICCQ,V2,V10-VCC
RL=4Ω
VIN=0
Ta=25℃
12
60
10
8
40
6
4
20
2
60
50
40
30
20
10
0
0
Vcc=9V
RL=4Ω
RNF=120Ω
Ta=25℃
70
Voltage Gain, GV (dB)
Quiescent Current, ICCQ (mA)
Gv-f
80
80
4
8
12
16
0
20
30
100
1K 3K
Frequency, f (Hz)
Supply Voltage, Vcc (V)
THD - POUT
10
5
THD - P OUT
30
VCC=9V
RL=4Ω
RNF=120Ω
Ta=25℃
Total Harmoic Distortion, THD (%)
Total Harmoic Distortion, THD (%)
30
3
f=10kHz
1
100Hz
0.5
0.3
0.1
0.01
1kHz
0.03
0.1
0.3
1
3
10
5
VCC=12V
RL =4Ω
RNF=120Ω
Ta=25℃
3
f=10kHz
1
0.5
100Hz
0.3
1kHz
0.1
10
0.01 0.03
Output Power, POUT (W)
THD - POUT
5
3
RL =4Ω
f=1kHz
RNF=120Ω
Ta=25℃
VCC=6V
9
12
1
0.5
0.3
0.1
0.01 0.03
0.3
1
0.1
Output Power, POUT (W)
3
10
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.3
0.1
1
Output Power, POUT (W)
3
10
R.R.-f
0
Ripple Rejection Ration, R.R.(d B)
Total Harmoic Distortion, THD (%)
30
10
10K 30K 100K
Vcc=9V
RL =4Ω
RNF=120Ω
Rg=620Ω
-10
-20
-30
-40
-50
-60
-70
-80
30
100
1K
3K
300
Frequency, f (Hz)
10K
30K
6 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
R.R. - Rg
Vcc=9V
RL=4Ω
f=1KHz
RNF=120Ω
Ta=25℃
-10
-20
-30
Vcc=9V
RL =4Ω
Rg=620Ω
RNF=120Ω
-10
-40
-50
-60
-70
-80
C.T. - f
0
Cross Talk C.T. (d B)
Ripple Rejection Ratio R.R.(d B)
0
-20
-30
-40
-50
-60
-70
30
100 300
1K 3K
-80
10K 30K 100K
30
100 300
Signal Source Resistance, Rg (Ω)
C.T. - Rg
0
-30
Output Noise Voltage, eN (mVrms)
-20
-40
-50
-60
-70
-80
30
100 300
1K 3K
1.4
1.2
1.0
0.4
0.2
6
6
V2,V10
4
2
2
0
0
14
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Total Harmoic Distortion THD (%)
8
Output Voltage V2,V10 (V)
10
8
10
12
4
8
Supply Voltage, Vcc2 (V)
1K 3K
10K 30K 100K
THD - POUT
ICCQ2
2
100 300
30
12
0
30
Signal Source Resistance , Rg (Ω)
ICCQ2,V2,V10-VCC2
4
eN - Rg
Vcc=9V
RL =4Ω
RNF=120Ω
BW=20~20kHz
Ta=25℃
0.6
0
10K 30K 100K
12
10
10K 30K 100K
0.8
Signal Source Resistance , Rg (Ω)
Quiescent Current, ICCQ2 (mA)
Cross Talk C.T. (d B)
1.6
Vcc=9V
RL=4Ω
f=1KHz
RNF=120Ω
Ta=25℃
-10
1K 3K
Frequency, f (Hz)
10
5
3
VCC1=9V
RL =4Ω
f=1kHz
RNF=120Ω
Ta=25℃
V CC2 =5V
1
6 7 8
9
0.5
0.3
0.1
0.01 0.03
0.1
0.3
1
3
10
Output Power, POUT (W)
7 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
ICCQ,V2,V10 - Ta
0.4
0.3
0.2
0.1
0
-40
0
-20
40
20
60
40
30
4
20
ICCQ
10
(2)
8
6
4
(4)
0
20
40
60
80
3
9
2
1
0
100 120 140 160 180
0
1
4
3
5
2
Output Voltage, POUT (W)
ICCQ2,V2,V10-VCC2
6
6
V2,V10
4
2
2
0
8
10
12
4
Supply Voltage, Vcc2 (V)
14
0
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Total Harmoic Distortion, THD(%)
8
Output Voltage, V2,V10 (V)
Quiescent Current, ICCQ2 (mA)
10
8
2
7
THD - POUT
ICCQ2
0
6
30
12
12
4
0
4
Ambient Temperature, Ta (℃)
10
80
RL=4Ω
f=1kHz
VCC=12V
5
(3)
2
60
PD - POUT
(1) INFNITE HEAT SINK
(2) 80cm2 × 2mm
AL HEAT SINK
(3) 18cm2 × 2mm
AL HEAT SINK
(4) NO HEAT SINK
10
40
Ambient Temperature, Ta(℃)
Power Dissipation, PD (W)
Allowable Power Dissipation, PD (W)
(1)
2
20
PD -Ta
12
0
0
-20
Ambient Temperature, Ta(℃)
14
6
V2,V10
0
-40
100
80
VCC=9V
10
RL =4Ω
VIN=0
8
50
Output Voltage V2,V10 (V)
VCC=9V
RL=4Ω
POUT=0.4W
f=1KHz
0.5
Quiescent Current, ICCQ (mA)
Total Harmonic Distortion, THD (%)
THD - Ta
10
5
3
VCC1 =9V
RL=4Ω
f=1kHz
RNF=120Ω
Ta=25℃
VCC2=5V
1
6 7 8
9
0.5
0.3
0.1
0.01 0.03
0.1
0.3
1
3
10
Output Power, POUT (W)
8 of 9
QW-R107-013,C
TA8207K
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
VCC=9V
RL=4Ω
POUT=0.4W
f=1KHz
0.5
0.4
0.3
0.2
0.1
0
-40
0
-20
20
40
60
80
VCC=9V
RL=4Ω 10
VIN=0
8
50
40
30
6
V2,V10
4
20
ICCQ
10
0
-40
100
-20
Ambient Temperature, Ta(℃)
10
(2)
8
6
(1) INFNITE HEAT SINK
(2) 80cm2 × 2mm
AL HEAT SINK
(3) 18cm2 × 2mm
AL HEAT SINK
(4) NO HEAT SINK
(3)
4
(4)
2
0
20
40 60 80 100 120 140 160 180
Ambient Temperature, Ta (℃)
40
60
80
0
Ambient Temperature, Ta(℃)
PD - POUT
RL=4Ω
f=1kHz
V CC=12V
5
Power Dissipation, PD(W)
Allowable Power Dissipation, PD(W)
(1)
12
0
20
0
PD -Ta
14
2
Output Voltage, V2,V10 (V)
ICCQ,V2,V10 - Ta
Quiescent Current, ICCQ (mA)
Total Harmonic Distortion, THD (%)
THD - Ta
4
3
9
2
1
0
0
1
4
2
3
5
Output Voltage, POUT (W)
6
7
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
9 of 9
QW-R107-013,C
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement