SGM4918 [SGMICRO]
80mW, Capless, Stereo Headphone Amplifier with Shutdown;型号: | SGM4918 |
厂家: | 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
• -40℃ to +85℃ Operating 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 -40℃ to +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
-40℃ to +85℃
-40℃ to +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........................-65℃ to +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.......................-40℃ to +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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