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PDF SM7511 Data sheet ( Hoja de datos )
| Número de pieza | SM7511 | |
| Descripción | 3W STEREO AUDIO POWER AMPLIFIER | |
| Fabricantes | SamHop Microelectronics | |
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Hay una vista previa y un enlace de descarga de SM7511 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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三合微科股份有限公司
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME 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 : [email protected]
www.DataSheet.in
1 page  
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
ELECTRICAL CHARACTERISTICS (VDD =PVDD = 5.5V, Ta = 25oC unless otherwise noted)
Characteristic
Output offset voltage (measured
differentially)
Symbol
Condition
Min. Typ. Max. Unit
VOO VDD=5.5V,Gain=20dB, SE/BTL=0V
60 mV
Power supply rejection ratio
PSRR VDD=PVDD=4.0V to 5.5V
-42 -70
dB
High-level input current(SE/BTL,FADE
HP/LINE,SHUTDOWN,SEMAX)
High-level input current
(SEDIFF,VOLUME)
Low-level input current(SE/BTL,FADE
HP/LINE,SHUTDOWN,SEMAX)
Supply current, no load
llH
llH
llL
lDD
Supply current,max power into a 3Ω load lDD
Supply current,shutdown mode
lDD(SD)
VDD=PVDD=5.5V,
Vl=VDD=PVDD
VDD=PVDD=5.5V , Vl=0V
VDD=PVDD=5.5V,SE/BTL=0V,
SHUTDOWN=2V
VDD=PVDD=5.5V,SE/BTL=5.5V,
SHUTDOWN=2V
VDD=5V=PVDD,SE/BTL=0V,
SHUTDOWN=2V,RL=3Ω,
PO=2W,Stereo
SHUTDOWN=0.0V
1 uA
150 uA
1 uA
5.5 8.0 10
mA
3.0 5.0 6.0
1.5 ARMS
1 20 uA
OPERATING CHARACTERISTICS
(VDD =PVDD = 5V, RL = 3Ω, Gain = 6dB, Ta = 25oC unless otherwise noted)
Characteristic
Symbol
Condition
Output Power
THD=1%, f=1 kHz
PO
THD=10%, f=1 kHz, VDD=5.5V
Total harmonic distortion+noise
High-level output voltage
Low-level output voltage
Bypass voltage(Nominally VDD/2)
Maximum output power bandwidth
THD+N
VOH
VOL
V(BYPASS)
BOM
PO =1W, RL=8Ω, f=20Hz to 20kHz
RL=8Ω,
Measured between output and VDD
RL=8Ω,
Measured between output and GND
Measured at pin 17, No load,
VDD=5.5V
THD=5%
Supply ripple rejection ratio
f=1 kHz, Gain = 0 dB,
C(BYP) = 1.0uF
BTL
SE
Noise output voltage
f= 20 Hz to 20 kHz, Gain=0
dB, C(BYP)= 1.0 uF
BTL
Min.
2.65
Typ.
2
3
Max.
Unit
W
<0.6 %
500 mV
400 mV
2.75 2.85 V
>20 kHz
-63
dB
-57
40 μVRMS
www.DataSheet.in
Page 4
V.1.3 Revised April 02,2007
5 Page 
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
SE/BTL OPERATION
The ability of the SM7511 to easily switch between BTL and SE modes is one of its most important cost saving
features. This feature eliminates the requirement for an additional headphone amplifier in applications where
internal stereo speakers are driven in BTL mode but external headphone or speakers must be accommodated.
Internal to the SM7511, two separate amplifiers drive OUT+ and OUT-. The SE/BTL input controls the operation
of the follower amplifier that drives LOUT- and ROUT-. When SE/BTL is held low, the amplifier is on and the
SM7511 is in the BTL mode. When SE/BTL is held high, the OUT- amplifiers are in a high output impedance
state, which configures the SM7511 as an SE driver from LOUT+ and ROUT+. IDD is reduced by approximately
one-third in SE mode. Control of the SE/BTL input can be from a logic-level CMOS source or, more typically,
from a resistor divider network as shown in Figure 3. The trip level for the SE/BTL input can be found in the
recommended operating condition table.
APPLICATION INFORMATION (continued)
4 RHPIN
5 RLINEIN
R
MUX
22 HP/LINE
6 RIN
Input
MUX
Control
_
+ _ ROUT+ 24
+
BYP
BYP
VDD Co
330μF
+_
_ ROUT-
+ EN
2 100KΩ
1KΩ
BYP
SE/BTL 23 100KΩ
LOUT+
Figure 3. SM7511 Resistor Divider Network Circuit
Using a 1/8-in. (3,5mm) stereo headphone jack, the control switch is closed when no plug is inserted. When
closed the 100KΩ/1KΩ divider pulls the SE/BTL input low. When a plug is inserted, the 1KΩ resistor is
disconnected and SE/BTL input is pulled high. When the input goes high, the OUT- amplifier is shut down
causing the speaker to mute (open-circuits the speaker). The OUT+ amplifier then drives through the output
capacitor (CO) into the headphone jack.
www.DataSheet.in
Page 10
V.1.3 Revised April 02,2007
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet SM7511.PDF ] | |
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