三合微科股½有限公司
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH UP / DOWN GAIN CONTROL
The information in this document is subject to change without notice.
c
SAMHOP Microelectronics Corp. All Rights Reserved.
台北縣新店市民權路100號7樓
7F,No.100,Min-Chyuan Road, Hsintien, Taipei Hsien, Taiwan, R.O.C.
TEL: 886-2-2218-3978/2820 FAX: 886-2-2218-3320
Email : info@samhop.com.tw
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH UP / DOWN GAIN CONTROL
GENERAL DESCRIPTION
The SM7513 is a stereo audio power amplifier that
drives 3 W/channel of continuous RMS power into
a 3-Ω load. Advanced up/down volume control
minimizes external components and allows BTL
(speaker) volume control and SE (earphone)
volume control. Wireless headphone benefit from
the integrated feature set that minimizes external
components without sacrificing functionality.
To simplify design, the speaker volume level is
adjusted by applying a up/down gain control to the
up/down terminals.
FEATURES
* Advanced DC Volume Control With 2-dB Steps
From -40 dB to 20 dB
* Depop circuitry
* Low quiescent current
* 1uA shutdown current
* 3W into 3Ω from 5.5V supply
* Thermal protection
* Compact configuration and minimum external
components
APPLICATIONS
* Mini Speaker
* Wireless headphone
* Car multimedia system
PIN ASSIGNMENTS (TOP VIEW)
ROUTN
RPVDD
RLINEIN
VDD
LLINEIN
LPVDD
LOUTN
LPGND
1
2
3
4
5
6
7
8
Thermal
Pad
16
15
14
13
12
11
10
9
RPGND
ROUTP
SE/BTL
UP
DOWN
BYPASS
SHUTDOWN
LOUTP
SM7513
16PIN
Page 1
V.1.0 Apr 30,2007
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH UP / DOWN GAIN CONTROL
PIN ASSIGNMENTS
ROUTN
RPVDD
RLINEIN
VDD
LLINEIN
LPVDD
LOUTN
LPGND
1
2
3
4
5
6
7
8
Thermal
Pad
16
15
14
13
12
11
10
9
RPGND
ROUTP
SE/BTL
UP
DOWN
BYPASS
SHUTDOWN
LOUTP
SM7513
16PIN
PIN DESCRIPTIONS
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
ROUTN
RPV
DD
RLINEIN
V
DD
LLINEIN
LPV
DD
LOUTN
LPGND
LOUTP
SHUTDOWN
BYPASS
DOWN
UP
SE/BTL
ROUTP
RPGND
I/O
O
-
I
-
I
-
O
-
O
I
I
I
I
I
O
-
Function
Right channel negative audio output
Supply voltage terminal for power stage
Right channel line input
Supply voltage terminal
Left channel line input
Supply voltage terminal for power stage
Left channel negative audio output
Power ground
Left chanel positive audio output
Places the amplifier in shutdown mode if a TTL logic low is placed
on this terminal
Tap to voltage divider for internal midsupply bias generator used for
analog reference
Terminal for volume down control, high active
Terminal for volume up control, high active
Output MUX control. When this terminal is high,SE outputs are selected.
When this terminal is low, BTL outputs are selected
Right channel positive audio output
Power ground
Page 2
V.1.0 Apr 30,2007
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH UP / DOWN GAIN CONTROL
MAXIMUM RATINGS (Ta = 40~85
o
C)
Characteristic
Supply Voltage, V
DD
, PV
DD
Input Voltage
Continous total power dissipation
Operaing junction temperature range
Storage temperatuer range
Lead temperature 1,6 mm (1/16 inch)
from case for 10 seconds
Symbol
V
SS
V
I
-
T
J
Tstg
-
Rating
-0.3 ~ 6
- 0.3 ~ V
DD
+0.3
See Dissipation Rating Table
- 40 ~ 150
- 65 ~ 150
260
o
o
o
Unit
V
V
-
C
C
C
DISSIPATION RATING TABLE
PACKAGE
SOP /SSOP
T
A
≤25°C
Power Rating
2.7mW
Derating Factor
Above T
A
=25°C
21.8 mW/°
C
T
A
=70°C
Power Rating
1.7W
T
A
=85°C
Power Rating
1.4W
RECOMMENDED OPERATING CONDITION
Characteristic
Supply Voltage, V
DD
, PV
DD
High-level input voltage
V
IH
V
IL
Low-level input voltage
V
IL
Operating free-air temperature
T
A
SHUTDOWN
--
-40
SHUTDOWN
SE/BTL, UP, DOWN
Symbol
V
SS
V
IH
Condition
--
SE/BTL, UP, DOWN
Min.
4.0
0.8
V
DD
2.0
0.4
V
DD
0.6
85
o
Typ.
Max.
5.5
Unit
V
V
V
C
Page 3
V.1.0 Apr 30,2007
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH UP / DOWN GAIN CONTROL
ELECTRICAL CHARACTERISTICS (V
DD
=PV
DD
= 5.5V, Ta = 25
o
C unless otherwise noted)
Characteristic
Output offset voltage
(measured differentially)
Power supply rejection ratio
High-level input current
(SE/BTL,SHUTDOWN)
Low-level input
current(SE/BTL,SHUTDOWN,VOLUME)
Supply current, no load
Symbol
V
OO
PSRR
l
lH
l
lL
Condition
V
DD
=5.5V,Gain=20dB, SE/BTL=0V
V
DD
=PV
DD
=4.0V to 5.5V
V
DD
=PV
DD
=5.5V,
V
l
=V
DD
=PV
DD
V
DD
=PV
DD
=5.5V , V
l
=0V
V
DD
=PV
DD
=5.5V,SE/BTL=0V,
SHUTDOWN=2V
V
DD
=PV
DD
=5.5V,SE/BTL=5.5V,
SHUTDOWN=2V
V
DD
=5V=PV
DD
,SE/BTL=0V,
SHUTDOWN=2V,R
L
=3Ω,
P
O
=2W,Stereo
SHUTDOWN=0.0V
5.5
3.0
8.0
5.0
1.5
1
20
-42
-70
1
1
10
6.0
mA
Min.
Typ.
Max.
60
Unit
mV
dB
uA
uA
l
DD
Supply current,max power into a 3Ω load
Supply current,shutdown mode
l
DD
l
DD(SD)
A
RMS
uA
OPERATING CHARACTERISTICS
(V
DD
=PV
DD
= 5V, R
L
= 3Ω, Gain = 6dB, Ta = 25
o
C unless otherwise noted)
Characteristic
Symbol
Condition
THD=1%, f=1 kHz, R
L
=4Ω
THD=10%, f=1 kHz, R
L
=4Ω
Output Power
(1)
P
O
THD=1%, f=1 kHz, R
L
=8Ω
THD=10%, f=1 kHz, R
L
=8Ω
THD=10%, f=1 kHz, R
L
=3Ω,V
DD
=5.5V
Total harmonic distortion+noise
High-level output voltage
Low-level output voltage
Bypass voltage(Nominally V
DD
/2)
(2)
Maximum output power bandwidth
Supply ripple rejection ratio
Initial gain
THD+N
V
OH
V
OL
V
(BYPASS)
B
OM
P
O
=1W, R
L
=8Ω, f=20Hz to 20kHz
R
L
=8Ω,
Measured between output and V
DD
R
L
=8Ω,
Measured between output and GND
Measured at pin 11,
No load, V
DD
=5.5V
THD = 5%
f=1 kHz, Gain = 0 dB,
C
(BYP)
= 0.47uF
f= 1kHz , R
L
= 8Ω
BTL
SE
-2
Min.
Typ.
1.9
2.4
1.3
1.6
3
< 0.6
600
400
2.65
2.75
> 20
-63
-57
-4
-6
2.85
%
mV
mV
V
kHz
dB
dB
W
Max.
Unit
(1) Output power is measured at the output terminals of the IC.
(2) At 4V < V
DD
< 5.5V the DC bypass voltage is approximately V
DD
/2
Page 4
V.1.0 Apr 30,2007
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