SGM4918 [SGMICRO]

80mW, Capless, Stereo Headphone Amplifier with Shutdown;
SGM4918
型号: SGM4918
厂家: Shengbang Microelectronics Co, Ltd    Shengbang Microelectronics Co, Ltd
描述:

80mW, Capless, Stereo Headphone Amplifier with Shutdown

文件: 总11页 (文件大小:676K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
SGM4918  
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
GENERAL DESCRIPTION  
FEATURES  
The SGM4918 is stereo headphone amplifier which is  
designed for portable applications and can operate  
from a 2.7V to 5.1V single supply. Capless design can  
produce a ground-referenced output from a single  
power supply, and can eliminate output DC-blocking  
capacitors for less-component height and low-cost. For  
SGM4918B, the internal gain setting (-2V/V) is to  
further reduce component count. For SGM4918A, the  
gain can be adjusted by external feedback resistors.  
Supply Voltage Range: 2.7V to 5.1V  
SGM4918A: External Feedback Gain Network  
SGM4918B: Fixed -2V/V Gain  
Capless Structure  
Eliminates Ground-Referenced Outputs  
Eliminates Output DC-Blocking Capacitors  
Provides Flat Frequency Response  
80mW into 32Ω Load from 5V Power Supply at  
THD+N = 0.1% (Typical, per Channel)  
THD+N = 0.03% (f = 1kHz)  
The SGM4918 has low quiescent current 5.8mA at 5V  
supply, low 0.03% THD+N, 80mW per channel into  
32Ω load from 5V power supply at THD+N = 0.1%. The  
high supply rejection ratio (PSRR) of -78dB at 217Hz  
allows the device to operate from noisy digital supplies  
without an additional linear regulator. The device  
provides short-circuit and thermal-overload protections.  
Build-in shutdown control also helps for pop/click-free  
on/off control.  
High PSRR: -78dB (at 217Hz)  
Quiescent Current: 5.8mA (TYP)  
Shutdown Control  
Short-Circuit and Thermal-Overload Protections  
Under-Voltage Lockout Function  
-40to +85Operating Temperature Range  
Available in a Green TQFN-3×3-10L Package  
APPLICATIONS  
The SGM4918 is available in a Green TQFN-3×3-10L  
package. It operates over an ambient temperature  
range of -40to +85.  
Smart Phones  
Portable Audio Equipment  
Notebook PCs  
PDAs  
SG Micro Corp  
MARCH 2014 – REV. A. 4  
www.sg-micro.com  
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
PACKAGE/ORDERING INFORMATION  
SPECIFIED  
TEMPERATURE  
RANGE  
GAIN  
PACKAGE  
ORDERING  
NUMBER  
PACKAGE  
MARKING  
PACKING  
OPTION  
MODEL  
(V/V) DESCRIPTION  
SGM  
4918AD  
XXXXX  
SGM  
4918BD  
XXXXX  
SGM4918A  
SGM4918B  
ADJ  
-2  
TDFN-3×3-10L  
TDFN-3×3-10L  
SGM4918AYD10G/TR  
SGM4918BYD10G/TR  
Tape and Reel, 3000  
Tape and Reel, 3000  
-40to +85℃  
-40to +85℃  
MARKING INFORMATION  
NOTE: XXXXX = Date Code and Vendor Code.  
X X X X X  
Vendor Code  
Date Code - Week  
Date Code - Year  
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If  
you have additional comments or questions, please contact your SGMICRO representative directly.  
OVERSTRESS CAUTION  
ABSOLUTE MAXIMUM RATINGS  
VDD to GND........................................................ -0.3V to +6V  
C1P to GND.......................................... -0.3V to (VDD + 0.3V)  
C1N to GND......................................... (VSS - 0.3V) to + 0.3V  
VSS to GND ........................................................ -6V to +0.3V  
OUTR, OUTL to GND ................. (VSS - 0.3V) to (VDD + 0.3V)  
Stresses beyond those listed in Absolute Maximum Ratings  
may cause permanent damage to the device. Exposure to  
absolute maximum rating conditions for extended periods  
may affect reliability. Functional operation of the device at any  
conditions beyond those indicated in the Recommended  
Operating Conditions section is not implied.  
to GND .................................................. -0.3V to +6V  
SHDN  
INR, INL to GND......................... (VSS - 0.3V) to (VDD + 0.3V)  
Output Short Circuit to GND or VDD.................... Continuous  
Junction Temperature.................................................+150℃  
Storage Temperature Range........................-65to +150℃  
Lead Temperature (Soldering, 10s)............................+260℃  
ESD Susceptibility  
ESD SENSITIVITY CAUTION  
This integrated circuit can be damaged if ESD protections are  
not considered carefully. SGMICRO recommends that all  
integrated circuits be handled with appropriate precautions.  
Failureto observe proper handlingand installation procedures  
can cause damage. ESD damage can range from subtle  
performance degradation tocomplete device failure. Precision  
integrated circuits may be more susceptible to damage  
because even small parametric changes could cause the  
device not to meet the published specifications.  
HBM.............................................................................3000V  
HBM (Output pins to Supply and Ground pins)............4000V  
MM.................................................................................200V  
RECOMMENDED OPERATING CONDITIONS  
Supply Voltage Range........................................2.7V to 5.1V  
Operating Temperature Range.......................-40to +85℃  
DISCLAIMER  
SG Micro Corp reserves the right to make any change in  
circuit design, or specifications without prior notice.  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
2
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
PIN CONFIGURATION  
(TOP VIEW)  
C1P  
1
2
3
4
5
10  
9
GND  
C1N  
VSS  
SHDN  
VDD  
8
INL  
7
OUTL  
OUTR  
INR  
6
TDFN-3×3-10L  
PIN DESCRIPTIONS  
PIN  
NAME  
DESCRIPTION  
1
2
C1P  
C1N  
VSS  
OUTL  
OUTR  
INR  
Positive Terminal for Flying Capacitor. Connect a 1µFcapacitor to C1N.  
Negative Terminal for Flying Capacitor. Connect a 1µF capacitor to C1P.  
Charge-Pump Output. Bypass with a 1µF capacitor to GND.  
Output for Left-Channel.  
3
4
5
Output for Right-Channel.  
6
Input for Right-Channel.  
7
INL  
Input for Left-Channel.  
8
VDD  
Positive Power-Supply Input. Bypass with 4.7µF and 0.1µF capacitor to GND.  
Active-Low Shutdown Input.  
9
SHDN  
GND  
10  
Signal Ground.  
Exposed  
Pad  
GND  
Exposed Pad. Can be connected to GND or left floating.  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
3
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
ELECTRICAL CHARACTERISTICS  
(TA = +25, VDD  
=
= 5V, VGND = 0V, RIN = RF = 40kΩ (gain = -1V/V), C1 = C2 = 1µF, C3 = 4.7µF, C4 = 0.1µF, RL = ∞,  
SHDN  
unless otherwise noted.)  
PARAMETER  
General  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX UNITS  
Supply Voltage Range  
Under-Voltage Lockout  
VDD  
2.7  
5.1  
V
V
UVLO  
2.2  
5.5  
V
DD = 3.3V  
Quiescent Supply Current  
IDD  
= VDD  
= 0V  
mA  
SHDN  
SHDN  
VDD = 5V  
5.8  
8.2  
3
Shutdown Supply Current  
ISHDN  
VIH  
0.01  
µA  
V
Input Logic High  
Input Logic Low  
1.2  
SHDN  
SHDN  
VIL  
0.4  
V
Turn-On Time  
tON  
VDD = 5V  
2.8  
ms  
Amplifiers  
V
DD = 3.3V  
1.0  
1.2  
-78  
-68  
-63  
40  
Input AC-coupled to  
ground  
Output Offset Voltage  
VOS  
PSRR  
POUT  
mV  
dB  
VDD = 5V  
-5.5  
5.5  
f = 217Hz, VRIPPLE = 200mVP-P  
f = 1kHz, VRIPPLE = 200mVP-P  
f = 20kHz, VRIPPLE = 200mVP-P  
VDD = 3.6V  
Power Supply Rejection Ratio  
VDD = 5V  
RL = 32Ω + 1µH,  
f = 1kHz,  
THD+N = 0.1%  
Output Power  
mW  
VDD = 5V  
80  
= 0V  
Output Impedance in Shutdown  
2
kΩ  
SHDN  
RL = 32Ω + 1µH, f = 1kHz  
POUT = 10mW  
RL = 32Ω + 1µH, f = 1kHz  
POUT = 20mW  
VDD = 3.6V  
VDD = 5V  
0.02  
0.03  
100  
Total Harmonic Distortion  
Plus Noise  
THD+N  
SNR  
%
VDD = 5V, RL = 32Ω + 1µH, POUT = 25mW,  
Signal-to-Noise Ratio  
dB  
dB  
BW < 22kHz  
RL = 32Ω + 1µH, VOUT = 360mVRMS  
RL = 32Ω + 1µH, VOUT = 2VRMS  
68  
68  
L to R, R to L,  
f = 10kHz  
Crosstalk  
Capacitive Drive  
CL  
No sustained oscillations  
200  
pF  
Charge-Pump Oscillator  
Frequency  
fOSC  
200  
345  
515  
kHz  
Thermal Shutdown Threshold  
Thermal Shutdown Hysteresis  
140  
15  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
4
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
TYPICAL PERFORMANCE CHARACTERISTICS  
Power Dissipation vs. Output Power  
THD+N vs. Output Power  
10  
350  
VDD = 5V  
5
RL = 32Ω+1μH  
f = 1kHz  
AV = -1V/V  
300  
250  
200  
150  
100  
50  
2
1
OUTPUTS IN  
PHASE  
0.5  
BW < 22kHz  
0.2  
ONE CHANNEL  
DRIVEN  
0.1  
0.05  
OUTPUTS IN  
PHASE  
0.02  
0.01  
0.005  
ONE CHANNEL  
DRIVEN  
VDD = 5V, RL = 32Ω+1μH  
f = 1kHz, AV = -1V/V  
0.002  
0.001  
0
25  
50  
75  
100  
125  
150  
175  
200  
0
50  
100  
150  
200  
250  
300  
Output Power (mW)  
Output Power (mW)  
Power Dissipation vs. Output Power  
THD+N vs. Output Power  
10  
200  
160  
120  
80  
5
VDD = 3.6V  
RL = 32Ω+1μH  
f = 1kHz  
AV = -1V/V  
BW < 22kHz  
OUTPUTS IN  
PHASE  
2
1
0.5
0.2
ONE CHANNEL  
DRIVEN  
0.1  
0.05  
OUTPUTS IN  
PHASE  
0.02  
0.01
0.00
ONE CHANNEL  
DRIVEN  
5
40  
VDD = 3.6V, RL = 32Ω+1μH  
0.00
2
f = 1kHz, AV = -1V/V  
0.001  
0
20  
40  
60  
80  
100  
120  
0
50  
100  
150  
200  
Output Power (mW)  
Output Power (mW)  
Power Dissipation vs. Output Power  
THD+N vs. Output Power  
10
120  
5
VDD = 2.7V  
RL = 32Ω+1μH  
f = 1kHz  
AV = -1V/V  
BW < 22kHz  
OUTPUTS IN  
PHASE  
2
1
100  
80  
60  
40  
20  
0
0.5
0.2  
ONE CHANNEL  
DRIVEN  
0.1  
0.05  
OUTPUTS IN  
PHASE  
0.02  
0.0  
1
0.005  
ONE CHANNEL  
DRIVEN  
VDD = 2.7V, RL = 32Ω+1μH  
f = 1kHz, AV = -1V/V  
0.002  
0.001  
10  
10  
20  
20  
30  
30  
40  
40  
50  
50  
60  
60  
0
20  
40  
60  
80  
100  
Output Power (mW)  
Output Power (mW)  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
5
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
TYPICAL PERFORMANCE CHARACTERISTICS (continued)  
Output Power vs. Supply Voltage  
Output Power vs. Supply Voltage  
250  
200  
150  
100  
50  
300  
250  
200  
150  
100  
50  
RL = 32Ω+1μH, f = 1kHz, AV = -1V/V  
OUTPUTS IN PHASE  
RL = 32Ω+1μH, f = 1kHz, AV = -1V/V  
ONE CHANNEL DRIVEN  
THD+N 10%  
THD+N 10%  
THD+N 1%  
THD+N 1%  
0
0
2.5  
3
3.5  
4
4.5  
5
5.5  
2.5  
3
3.5  
4
4.5  
5
5.5  
Supply Voltage (V)  
Supply Voltage (V)  
Power Supply Rejection Ratio vs. Frequency  
Power Supply Rejection Ratio vs. Frequency  
0
-20  
0
-20  
VDD = 3V, RL = 32Ω+1μH  
Input AC-coupled to GND  
VDD = 5V, RL = 32Ω+1μH  
Input AC-coupled to GND  
V
RIPPLE = 200mVP-P  
V
RIPPLE = 200mVP-P  
-40  
-40  
-60  
-60  
RIGHT CHANNEL  
LEFT CHANNEL  
-80  
-80  
LEFT CHANNEL  
RIGHT CHANNEL  
-100  
-100  
0.01  
0.1  
1
10  
100  
0.01  
0.1  
1
10  
100  
Frequency (kHz)  
Frequency (kHz)  
Crosstalk vs. Frequency  
VDD = 5V, RL = 32Ω+1μH  
Crosstalk vs. Frequency  
VDD = 5V, RL = 32Ω+1μH  
-60  
-60  
V
OUT = 2VRMS, AV = -1V/V  
V
OUT = 360mVRMS, AV = -1V/V  
-70  
-80  
-70  
-80  
Input AC-coupled to GND  
Input AC-coupled to GND  
RIGHT TO LEFT  
LEFT TO RIGHT  
LEFT TO RIGHT  
RIGHT TO LEFT  
-90  
-90  
-100  
-100  
-110  
-120  
-110  
-120  
.02  
0.05 0.1  
0.2  
0.5  
1
2
5
10  
20  
0.02  
0.05 0.1  
0.2  
0.5  
1
2
5
10  
20  
Frequency (kHz)  
Frequency (kHz)  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
6
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
TYPICAL PERFORMANCE CHARACTERISTICS (continued)  
Crosstalk vs. Frequency  
VDD = 5V, RL = 32Ω+1μH  
Crosstalk vs. Frequency  
VDD = 5V, RL = 32Ω+1μH  
VOUT = 2VRMS, AV = -2V/V  
Input AC-coupled to GND  
-60  
-70  
-60  
-70  
V
OUT = 360mVRMS, AV = -2V/V  
Input AC-coupled to GND  
RIGHT TO LEFT  
RIGHT TO LEFT  
-80  
-90  
-80  
-90  
LEFT TO RIGHT  
LEFT TO RIGHT  
-100  
-100  
0.02  
0.05 0.1  
0.2  
0.5  
1
2
5
10  
20  
0.02  
0.05 0.1  
0.2  
0.5  
1
2
5
10  
20  
Frequency (kHz)  
Frequency (kHz)  
THD+N vs. Frequency  
THD+N vs. Frequency  
10  
10  
5
5
VDD = 3.6V  
VDD = 5V  
RL = 32Ω+1μH  
BW < 22kHz  
RL = 32Ω+1μH  
BW < 22kHz  
2
1
2
1
0.5  
0.5  
0.2  
0.1  
0.2  
0.1  
PO = 20mW  
0.05  
0.05  
0.02  
0.01  
0.02  
0.01  
PO = 10mW  
PO = 60mW  
PO = 30mW  
0.005  
0.005  
0.002  
0.001  
0.002  
0.001  
0
0.02  
0.05 0.1 0.2  
0.5  
1
2
5
10 20  
50 100  
0
0.02  
0.05 0.1 0.2  
0.5  
1
2
5
10 20  
50 100  
Frequency (kHz)  
Frequency (kHz)  
PSRR vs. Supply Voltage  
-40  
f = 1kHz  
VRIPPLE = 200mVP-P  
-50  
-60  
-70  
-80  
LEFT CHANNEL  
RIGHT CHANNEL  
2.7  
3.1  
3.5  
3.9  
4.3  
4.7  
5.1  
5.5  
Supply Voltage (V)  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
7
80mW, Capless, Stereo Headphone  
Amplifier with Shutdown  
SGM4918  
REVISION HISTORY  
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.  
MARCH 2014 ‒ REV.A.3 to REV.A.4  
Changed VCC .....................................................................................................................................................................................................All  
AUGUST 2013 ‒ REV.A.2 to REV.A.3  
Updated ELECTRICAL CHARACTERISTICS and TYPICAL PERFORMANCE CHARACTERISTICS ......................................................... 4, 6, 7  
NOVEMBER 2012 ‒ REV.A.1 to REV.A.2  
Added note for Typical Application Circuit............................................................................................................................................................8  
SEPTEMBER 2012 ‒ REV.A to REV.A.1  
Added Tape and Reel Information ............................................................................................................................................................... 11, 12  
Changes from Original (FEBRUARY 2012) to REV.A  
Changed from product preview to production data.............................................................................................................................................All  
SG Micro Corp  
www.sg-micro.com  
MARCH 2014  
8
PACKAGE INFORMATION  
PACKAGE OUTLINE DIMENSIONS  
TDFN-3×3-10L  
D
e
N10  
D1  
k
E
E1  
N5  
N1  
b
L
BOTTOM VIEW  
TOP VIEW  
2.4  
1.7 2.8  
A
A1  
A2  
0.6  
SIDE VIEW  
0.24  
0.5  
RECOMMENDED LAND PATTERN (Unit: mm)  
Dimensions  
In Millimeters  
Dimensions  
In Inches  
Symbol  
MIN  
MAX  
0.800  
0.050  
MIN  
0.028  
0.000  
MAX  
0.031  
0.002  
A
A1  
A2  
D
0.700  
0.000  
0.203 REF  
0.008 REF  
2.900  
2.300  
2.900  
1.500  
3.100  
2.600  
3.100  
1.800  
0.114  
0.091  
0.114  
0.059  
0.122  
0.103  
0.122  
0.071  
D1  
E
E1  
k
0.200 MIN  
0.500 TYP  
0.008 MIN  
0.020 TYP  
b
0.180  
0.300  
0.300  
0.500  
0.007  
0.012  
0.012  
0.020  
e
L
SG Micro Corp  
TX00060.000  
www.sg-micro.com  
PACKAGE INFORMATION  
TAPE AND REEL INFORMATION  
REEL DIMENSIONS  
TAPE DIMENSIONS  
P2  
P0  
W
Q2  
Q4  
Q2  
Q4  
Q2  
Q4  
Q1  
Q3  
Q1  
Q3  
Q1  
Q3  
B0  
Reel Diameter  
P1  
A0  
K0  
Reel Width (W1)  
DIRECTION OF FEED  
NOTE: The picture is only for reference. Please make the object as the standard.  
KEY PARAMETER LIST OF TAPE AND REEL  
Reel Width  
Reel  
Diameter  
A0  
B0  
K0  
P0  
P1  
P2  
W
Pin1  
Package Type  
W1  
(mm)  
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant  
TDFN-3×3-10L  
13″  
12.4  
3.35  
3.35  
1.13  
4.0  
8.0  
2.0  
12.0  
Q1  
SG Micro Corp  
TX10000.000  
www.sg-micro.com  
PACKAGE INFORMATION  
CARTON BOX DIMENSIONS  
NOTE: The picture is only for reference. Please make the object as the standard.  
KEY PARAMETER LIST OF CARTON BOX  
Length  
(mm)  
Width  
(mm)  
Height  
(mm)  
Reel Type  
Pizza/Carton  
13″  
386  
280  
370  
5
SG Micro Corp  
www.sg-micro.com  
TX20000.000  

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