UTC-IC TDA7266-J15-A-T

UNISONIC TECHNOLOGIES CO., LTD
TDA7266
LINEAR INTEGRATED CIRCUIT
7+7W DUAL BRIDGE
AMPLIFIER
DESCRIPTION
The UTC TDA7266 is a 7+7W dual bridge amplifier specially
designed for TV and Portable Radio applications.
FEATURES
* Wide supply voltage range (3 ~ 18V)
* Minimum external components
* No SWR capacitor
* No bootstrap
* No boucherot cells
* Internally fixed gain
* STAND-BY & MUTE functions
* Short circuit protection
* Thermal overload protection
HZIP-15A
*Pb-free plating product number: TDA7266L
ORDERING INFORMATION
Ordering Number
Normal
Lead Free Plating
TDA7266-J15-A-T
TDA7266L-J15-A-T
Package
Packing
HZIP-15A
Tube
PIN CONFIGURATION
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
OUT2+
OUT2Vcc
IN2
N.C.
N.C.
S-GND
PW-GND
STAND-BY(ST-BY)
MUTE
N.C.
IN1
Vcc
OUT1OUT1+
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TDA7266
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
Vcc
0.22µF
IN1
ST-BY
4
3
13
470µF
+
-
1
OUT1+
+
2
OUT1-
+
-
15
OUT2+
+
14 OUT2-
100nF
7
S-GND
0.22µF
IN2
MUTE
9
VREF
12
6
PW-GND
8
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R107-037,A
TDA7266
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
20
V
Output Peak Current (internally limited)
IOUT
2
A
Power Dissipation (TC =70℃)
PD
33
W
℃
Junction Temperature
TJ
+125
℃
Operating Temperature
TOPR
0 ~ +70
℃
Storage Temperature
TSTG
-40 ~ +150
Note: 1.Absolute maximum ratings are those values beyond which the device 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℃, characteristic and correlation with static process control.
THERMAL DATA
PARAMETER
Thermal Resistance Junction to Case
SYMBOL
θJC
RATINGS
1.4
UNIT
℃/W
ELECTRICAL CHARACTERISTICS(VCC=11V, RL =8Ω, f=1kHz, Ta=25℃, unless otherwise specified)
PARAMETER
Supply Range
Output Offset Voltage
Total Output Noise Voltage
Total Quiescent Current
Input Resistance
Output Power
Total Harmonic Distortion
Crosstalk
Closed Loop Voltage Gain
Voltage Gain Matching
Supply Voltage Rejection
Thermal Threshold
MUTE FUNCTION
SYMBOL
TEST CONDITIONS
VCC
VO(OFF)
eN
A curve, f=20Hz ~ 20kHz
IQ
RIN
POUT THD=10%
POUT=1W
THD
POUT=0.1~2W, f=100Hz~15kHz
CT
Gv
△Gv
SVR f=100Hz, VR=0.5V
Tt
for VCC>6.4V, VOUT= -30dB
for VCC<6.4V, VOUT= -30dB
MIN
3
46
25
60
26
40
56
150
UNIT
V
mV
µV
mA
kΩ
W
%
%
dB
dB
dB
dB
℃
2.3
2.9
4.1
VCC/2-1.0 VCC/2-0.75 VCC/2-0.5
V
V
25
6.3
TYP
11
150
48
30
7
0.05
Mute Threshold
VMTHD
Mute Attenuation
STAND BY FUNCTION
STAND-BY Threshold
STAND-BY Current V6=GND
AMUTE
60
80
VTST-BY
IST-BY
0.8
1.3
UNISONIC TECHNOLOGIES CO., LTD
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MAX
18
120
65
0.2
1
27
0.5
dB
1.8
100
V
µA
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TDA7266
LINEAR INTEGRATED CIRCUIT
APPLICATION SUGGESTION
For Microprocessor Application
In order to avoid annoying ”Pop-Noise” during Turn-On/Off transients, it is necessary to guarantee the right ST-BY
and MUTE signals sequence. It is quite simple to obtain this function using a microprocessor (Fig 1 and Fig 2).
At first ST-BY signal (from mP) goes high and the voltage across the ST-BY terminal (Pin 7) starts to increase
exponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to
avoid ”POP” and ”CLICK” on the outputs.
When this voltage reaches the ST-BY threshold level, the amplifier is switched-on and the external capacitors in
series to the input terminals (C3, C5) start to charge.
It’s necessary to maintain the mute signal low until the capacitors are fully charged, this to avoid that the device
goes in play mode causing a loud “Pop Noise” on the speakers.
A delay of 100 ~ 200ms between ST-BY and MUTE signals is suitable for a proper operation.
Vcc
C1
0.22µF
4
IN1
ST-BY
13
1
C5
470µF
OUT1+
2
OUT1-
15
OUT2+
C6
100nF
7
R1
10k
C2
10µF
S-GND
µP
3
C3
0.22µF
9
12
IN2
MUTE
TDA7266
6
R2
10k
C4
1µF
PW-GND
14 OUT28
Fig. 1 Microprocessor Application
UNISONIC TECHNOLOGIES CO., LTD
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LINEAR INTEGRATED CIRCUIT
APPLICATION SUGGESTION(Cont.)
+Vcc(V)
+18
VIN (mV)
VST-BY
Pin 7
1.8
1.3
0.8
VMUTE
Pin 6
4.1
2.9
2.3
IQ (mA)
VOUT (V)
OFF
ST-BY
PLAY
MUTE
ST-BY
OFF
MUTE
Fig 2 Microprocessor Driving Signals
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LINEAR INTEGRATED CIRCUIT
APPLICATION SUGGESTION(Cont.)
For Low Cost Application
In low cost applications where the mP is not present, the suggested circuit is shown in Fig 3.
The ST-BY and mute terminals are tied together and they are connected to the supply line via an external voltage
divider.
The device is switched-on/off from the supply line and the external capacitor C4 is intended to delay the ST-BY
and MUTE threshold exceeding, avoiding “Popping” problems.
Vcc
C3
0.22µF
IN1
R1
47k
R2
47k
IN1
4
ST-BY
3
13
1
C1
470µF
OUT1+
2
OUT1-
15
OUT2+
C2
100nF
7
C4
10µF
S-GND
C5
0.22µF
9
12
TDA7266
IN2
MUTE
PW-GND
6
14 OUT28
Fig 3 Stand Alone Low Cost Application
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
4.0000
3.0000
Quiescent Current vs Supply Voltage
Gain vs Frequency
5.0000
70
Vcc=11V
RI=8Ω
POUT=1W
65
60
55
1.0000
IQ (mA)
Level (dBr)
2.0000
0.0
-1.000
-2.000
50
4
5
40
-3.000
35
-4.000
-5.000
10
10
0
1k
Frequency (Hz)
10k
100k
30
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Vsupply (V)
UTC assumes no responsibility for equipm ent failures that result from using products at values that
exceed, even mom entarily, rated values (such as m aximum ratings, operating condition ranges, or
other param eters) 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 system s where
m alfunction 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 inform ation
presented in this docum ent 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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