Panasonic AN7174K Dual btl 14w audio power amplifier circuit Datasheet

ICs for Audio Common Use
AN7174K
Dual BTL 14W Audio Power Amplifier Circuit
■ Overview
The AN7174K is an integrated circuit for 14W (13.2V,
4Ω) output power amplifier circuit. Two BTL amplifiers are
built-in on a single chip and stereo operation is possible.
It is highly reliable due to protection circuits built-in. The
built-in stand-by circuit makes it possible to switch the circuit ON/OFF with a charge mode to power supply pin.
ø 3.6
5.9±0.25 7.7±0.3
Unit : mm
7.8±0.5
6.33±0.5
29.6±0.3
0.6±0.2
1.778
R1.8
0.6
■ Features
• High output power (BTL 14W × 2)
• Stand-by circuit built-in
• Protection circuits built-in (temperature,
20.0±0.25
29.96±0.3
28.0±0.3
16
1
1.2±0.1
12.5±0.3
(14.1)
2.66
(4.06)
3.5±0.3
1.45±0.25
1.8±0.25
(1.2)
1.45±0.25
16-Lead ZIP Package with Fin (EZIP016-P-0660)
■ Block Diagram
7
VCC
1
8
Input
Circuit
Driver
Circuit
Output
Circuit
13
4
3
6
Input
Circuit
Driver
Circuit
5
Stand – by
Circuit
12
Input
Circuit
Output
Circuit
GND
2
Protection Circuit
Driver
Circuit
Output
Circuit
16
15 GND
Input
Circuit
GND 10
11
9
Driver
Circuit
Output
Circuit
14
2.54±0.8
2.8±0.3
(0.25)
overvoltage,
VOUT– GND short, Load short, VOUT–VCC short)
• Low shock noise from power ON/OFF operation
• Fewer external parts
• Highly stable operation
ICs for Audio Common Use
AN7174K
■ Absolute Maximum Ratings (Ta= 25˚C)
Parameter
Symbol
Rating
Unit
VCC
24
V
VCC (surge)
50
V
ICC
6
A
Supply Voltage Note 1)
Peak Supply Voltage Note 2)
Supply Current
PD
62.5
W
Operating Ambient Temperature
Topr
– 30 ~ + 75
˚C
Storage Temperature
Tstg
– 55 ~ + 150
˚C
Power Dissipation
Note 3)
Note 1) No Signal
Note 2) Time= 0.2s
Note 3) Rθj– c= 2˚C/W
■ Recommended Operating Range (Ta = 25˚C)
Parameter
Symbol
Range
Operating Supply Voltage Range
VCC
8V ~ 18V
■ Electrical Characteristics (VCC = 13.2V, RL= 4Ω, f = 1kHz, Ta = 25˚C)
Parameter
Symbol
Quiescent Circuit Current
Output Noise Voltage
Vin= 0mV
GV
Vin= 5mV
THD
Vin= 5mV
Voltage Gain
Total Harmonic Distortion
Condition
ICQ
Vno *
typ.
max.
120
Vin= 0mV, Rg= 10kΩ
PO
Maximum Output Power (4Ω)
min.
50.5
THD= 10%
Unit
200
mA
0.6
1.5
mV
52.5
54.5
dB
0.2
0.75
%
9
12.5
W
35
40
dB
Ripple Rejection Ratio
RR *
Output Offset Voltage
VO (offset)
Vin= 0mV
–300
0
300
mV
CB
Vin= 5mV
–1
0
1
dB
Channel Balance
Rg= 0Ω, Vin= 0mV, Ripple= 300mV, 120Hz
Total Harmonic Distortion
THD
Vin= 5mV, 100Hz
0.26
Total Harmonic Distortion
THD
Vin= 5mV, 10kHz
0.45
%
Frequency Characteristics
fCH
Vin= 5mV, –3dB down
22
kHz
Frequency Characteristics
fCL
Vin= 5mV, –3dB down
21
Hz
Stand-by Pin ON
21
µA
Vin= 5mV, Rg= 10kΩ
61
dB
Quiescent Circuit Current at Stand-by Pin ICQ (STBY–ON)
CT
Crosstalk
%
* With 15Hz ~ 30kHz (12dB/oct) filter
■ Characteristics Curve
PO, THD – Vin
8
PO
1
1
THD
0.1
4
0.1
52
GV
50
48
46
1.0
VCC = 13.2V
0.8
RL = 4Ω
PO = 1W
0.6
0.4
THD
0.2
0
0
4
8
12
16
Supply Voltage VCC (V)
20
0.01
0.1
1
10
Input Voltage Vin (mV)
0.01
100
10
100
1k
10k
Frequency f (Hz)
0
100k
Total Harmonic Distortion THD (%)
12
Voltage Gain GV (dB)
10
10
Output Power PO (W)
Maximum Output PO (W)
VCC = 13.2V
RL = 4Ω
f = 1kHz
f = 1kHz
THD = 10%
RL = 4Ω
16
GV, THD – f
54
100
100
Total Harmonic Distortion THD (%)
PO – VCC
20
ICs for Audio Common Use
AN7174K
GV, THD – VCC
ICQ – VCC
10
f = 1kHz
RL = 4Ω
Vin = 3mV
60
9
7
48
6
46
5
44
4
42
3
40
2
38
1
160
(1)
50
Power Dissipation PD (W)
50
Quiescent Circuit Current ICQ (mA)
8
62.5W
55
Total Harmonic Distortion THD (%)
GV
52
Voltage Gain GV (dB)
PD – Ta
65
200
120
80
45
40
35
30
25
20
15
40
(1) Tc – Ta
(Rθj – c = 2˚C/W)
(2) With a 100cm2 × 3
mm Al (Black color coated) or a
heat sink (not
lacquered)
(3) With a 100cm2 × 2
mm Al
(4) Witout heat sink
20.8W (2)
15.6W (3)
10
3
4
5
6
7
8
9
10
(4)
5
THD
36
0
0
11
4
8
Supply Voltage VCC (V)
12
16
0
20
3.0W
0
25
Supply Voltage VCC (V)
50
75
■ Application Circuit
VCC=13.2V
+
–
VCC Pin
2000µF
1
IN Ch.1
–
+
6
2
1µF
7
+
–
100µF
GND
OUT Ch.1
4Ω
3
8
0.047µF
4
0.1
µF
200Ω
10
GND (Input side)
AN7174K
13
+
2.2Ω
Ripple Filter Pin
+
–
IN Ch.2
–
0.1µF
2.2Ω
200µF
12
16
1µF
11
+
–
100µF
GND
OUT Ch.2
15
4Ω
9
0.47µF
14
0.1µF
0.1
µF
200Ω
2.2Ω
2.2Ω
5
(STAND-BY)
+5V (Normal ON mode)
0V (stand-by mode)
Note)
100
125
Ambient Temperature Ta (˚C)
300mV, 120Hz ripple component should be applied at the measurement of ripple rejection ratio.
150
ICs for Audio Common Use
AN7174K
■ Pin Descriptions
Pin Name
Pin No.
Description
1
Supply Pin
Supply connection pin
2
Output Ch.1
Ch.1 positive-phase output pin
3
GND (Output Ch.1)
GND pin for Ch.1 output
4
Output Ch.1
Ch.1 reverse-phase output pin
5
Stand-by
Circuit mode (stand-by
switching pin
6
Input Ch.1
Ch.1 input signal applied pin
Equivalent Circuit
2
4
operation)
5
6
7
7
Negative Feedback Ch.1
Ch.1 negative feedback pin (+)
8
Negative Feedback Ch.1
Ch.1 negative feedback pin (–)
8
9
9
Negative Feedback Ch.2
Ch.2 negative feedback pin (–)
10
GND (Input)
GND pin for input signal source
11
Negative Feedback Ch.2
Ch.2 negative feedback pin (+)
11
ICs for Audio Common Use
AN7174K
■ Pin Descriptions (Cont.)
Pin Name
Pin No.
Description
Equivalent Circuit
12
12
Input Ch.2
Ch.2 input signal applied pin
13
Ripple Filter
Supply ripple rejection pin
13
14
Output Ch.2
Ch.2 reverse-phase output pin
15
GND (Output Ch.2)
GND pin for Ch.2 output
16
Output Ch.2
Ch.2 positive-phase output pin
14
16
■ Precautions on use
1.
2.
3.
4.
5.
6.
7.
8.
Thermal breaking protection
The protective operation starts at the chip temperature of 150˚C±5˚C.
Overvoltage protection
The protective operation starts at VCC – 26V.
Ground fault protection
The protective operation starts when the contact resistance dropped below 0.3Ω.
Load shortcircuit protection
The protective operation starts when the contact resistance dropped below 0.3Ω.
Atmospheric fault protection
The protective operation starts only when a shortcircuit between pins occurred.
TAB shortcircuit
Even TAB short-circuiting with the GND potential causes no breaking trouble.
The operation remains normal even when the load is 2Ω.
When the chip temperature abnormally rose, the temperature protection circuit gets actuated, but it is automatically reset
when the chip temperature dropped below the set level.
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