Panasonic AN5278 Datasheet
ICs for Audio Common Use
AN5278
4.8 W × 1 (18 V, 8 Ω) Power Amplifier with
Volume and Tone Control
■ Overview
The AN5278 is a monolithic integrated circuit designed
for 4.8 W × 1 channel OTL (18 V, 8 Ω) output audio power
amplifier suitable for TV application.
■ Features
• Few external components :
• No boucherot cells (output C, R)
• No bootstrap capacitors
• Built-in DC mute of input pin during power-OFF
• Operating voltage range 12 V to 26 V (18 V typ.)
19.9±0.1
18.3±0.25
φ2.65±0.1
φ3.3±0.1
0.1±0.05
8.4±0.25
5.8±0.25
1.5±0.25
5.6±0.25
6.3 7.1
±0.3 ±0.25
15.0
Unit : mm
3.75±0.25
9
8
7
6
5
4
3
2
1
0.5
±0.1
1.7±0.25
2.54
+0.1
1.2
–0.05
0.45
±0.25
22.3±0.3
■ Applications
• TV
■ Block Diagram
±0.25
1.7
HSIP009-P-0000
Pre
amp.
10 kΩ
AC
mute
10 kΩ
300 Ω
Tone Volume
1
2
In
3
LF
4
Tone
Vol.
5
RF
6
NF
7
8
GND
Out
DC
mute
9
CC
V
1
AN5278 ICs for Audio Common Use
■ Pin Descriptions
Pin No. Description
1 Sound input
2 Low frequency input
3 Tone control
4 Volume control
5 Ripple filter
6 Negative feedback
7 GND
8 Sound output
9V
■ Absolute Maximum Ratings
Supply voltage
Supply current I
Power dissipation
Operating ambient temperature
Storage temperature
Note) *1:Ta = 25 °C except operating ambient temperature and storage temperature.
*2: Without input signal, VCC is up to 35 V.
*3: Power dissipation of the package at Ta = 70 °C.
CC
Parameter Symbol Rating Unit
2
*
3
*
1
*
1
*
V
CC
CC
P
D
T
opr
T
stg
35.0 V
2A
1.6 W
−20 to +70 °C
−55 to +150 °C
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage V
2
CC
12 to 26 V
ICs for Audio Common Use AN5278
■ Electrical Characteristics at VCC = 18 V, RL = 8 Ω, f = 1 kHz, Vol. = 5.0 V, Tone = 2.5 V, Ta = 25 °C
Parameter Symbol Conditions Min Typ Max Unit
Quiescent current I
Voltage gain G
Total harmonic distortion THD V
Max. output power P
Max. output attenuation Att
Tone variable range 1 ∆GTC1 f = 15 kHz, VO = 1 V[rms] 7 9 dB
Tone variable range 2 ∆GTC2 f = 15 kHz, VO = 1 V[rms] −11 −9dB
No input signal 20 27 48 mA
CQ
Measure VCC current
VO = 1 V[rms] 27 30 33 dB
V
GV = 20 log (VO/VIN)
= 1 V[rms] 0.4 1.0 %
O
BPF : 400 Hz to 30 kHz
THD = 10 %, PO = V
Omax
maxVO
= 1 V[rms] −66 −69 dB
2
/R
O
L
4.3 4.8 W
Vol. = max. → min.
Att
= 20 log
max
[VO (Vol. = min.) / VO (Vol. = max.)]
∆GTC = 20 log
[VO (Tone = 5.0 V) / VO (Tone = 2.5 V)]
∆GTC = 20 log
[VO (Tone = 0 V) / VO (Tone = 2.5 V)]
• Design reference data
Note) The characteristic values below are theoretical values for designing and not guaranteed.
Parameter Symbol Conditions Min Typ Max Unit
Input dynamic range DR
INVVOL
= 1 V 4.5 V[rms]
vary VIN until output THD = 1 %
Output DC bias V
No input signal 7.9 8.3 8.7 V
ODC
Measure Pin8 DC
Max. output power 1 P
Max. output power 2 P
THD = 10 %, VCC = 18.4 V 5 W
Omax1
PO = V
THD = 10 %, VCC = 26 V 9 W
Omax2
PO = V
2
/R
O
L
2
/R
O
L
3
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