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SGM4890
GENERAL DESCRIPTION
The SGM4890 is a 1.1-W, fully integrated, audio power amplifier. It is designed to maximize audio performance in portable applications such as mobile phone. The portable application requires audio power amplifier has minimum of external components and can operate from a single 2.5V to 5.5V power supply. SGM4890 is capable of delivering 1.1W of continuous output power with less than 1% distortion THD + N(c) when it drives an 8 speaker from a 5.0V power supply. The SGM4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with a logic low. Additionally, the SGM4890 features an internal thermal shutdown protection mechanism. The SGM4890 does not require capacitors or bootstrap capacitors, ideally suited for mobile phone and applications where minimal power primary requirement. output coupling and therefore is other low voltage consumption is a
1.1 Watt Audio Power Amplifier
FEATURES
* Ideal for Notebook Computers, PDAs, and Other Small Portable Audio Devices * 1.1W to 8- BTL Load from 5V Supply at THD =1% (Typical) * Excellent PSRR: Direct Connection to the Battery * Fast Turn On Time * Unity Gain Stable * 2.5V to 5.5V Operation * Shutdown Current: 0.01A Typical * Shutdown Pin is Compatible with 1.8V Logic * -40ae to +85ae Operating Temperature Range * Small Packaging
PIN CONFIGURATIONS (Top View)
A B C
-IN
VO1
+IN
For maximum flexibility, the SGM4890 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor). When using a 1F bypass capacitor, it offers 110ms wake up time when V+ is equal to 5.0V. The SGM4890 is available in CSP-9 and MSOP-8 packages. It operates over an ambient temperature range of -40ae to +85ae .
GND
GND
V+
Bypass
VO2
SHDN
1
2
CSP-9
3
APPLICATIONS
Portable Systems MP3 Players Mobile Phone PDAs GPS
SHDN
1 2 3 4
8
VO2
Bypass
7 6 5
GND
+IN
V+
-IN
VO1
MSOP-8
SG Microelectronics Co, Ltd Tel: 86/10/51798160/80 www.sg-micro.com
REV. A
ELECTRICAL CHARACTERISTICS : TA = 25ae
PARAMETER SYMBOL CONDITIONS MIN V+ = +5V, No Load V+ = +5V, 8 Load V+ = +3.6V, No Load V+ = +3.6V, 8 Load V+ = +3.0V, No Load V+ = +3.0V, 8 Load V+ = +2.6V, No Load V+ = +2.6V, 8 Load 1.2 0.4 1 V+ = +5V Output Power (8 ) PO f = 1 kHz, THD+N=1% V+ = +3.6V V+ = +3.0V V+ = +2.6V Total Harmonic Distortion + Noise THD+N PO = 0.4Wrms, f = 1kHz V+ = +5V f = 217Hz V+ = +3.6V V+ = +3.0V Power Supply Rejection Ratio PSRR V+ = +2.6V V+ = +5V f = 1kHz V+ = +3.6V V+ = +3.0V V+ = +2.6V V+ = +5V Wake -up Time TWU CBYPASS = 1F V+ = +3.6V V+ = +3.0V V+ = +2.6V V+ = +5V Shut Down Time TSDT 8 Load V+ = +3.6V V+ = +3.0V V+ = +2.6V 1.10 0.58 0.40 0.30 0.01 -66 -63 -63 -62 -72 -68 -66 -64 110 110 100 100 10 16 17.8 17.8 s ms dB % W 50 SGM4890 TYP 4 6 3.7 5.7 3.5 5.5 3.3 5.3 0.01 MAX 8 10 mA UNITS
Quiescent Power Supply Current
IQ
VIN = 0V, IO = 0A,
7 9
Shutdown Current Shutdown Voltage Input High Shutdown Voltage Input Low Output Offset Voltage
ISD VSDIH VSDIL VOS
VSHUTDOWN = 0V,
4.0
A V V mV
Specifications subject to changes without notice.
2
SGM4890
PACKAGE/ORDERING INFORMATION
MODEL SGM4890 ORDER NUMBER SGM4890YG/TR SGM4890YMS/TR PACKAGE DESCRIPTION CSP-9 MSOP-8 PACKAGE OPTION Tape and Reel, 3000 Tape and Reel, 3000 MARKING INFORMATION 4890YG SGM4890YMS
ABSOLUTE MAXIMUM RATINGS
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Input Voltage . . . . . . . . . . . . . . . . (-VS) - 0.3 V to (+VS) +0.3V Storage Temperature Range . . . . . . . . . . . . .-65ae to +150ae Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150ae Operating Temperature Range . . . . . . . . . . . -40ae to +85ae Lead Temperature Range (Soldering 10 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260ae NOTES 1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
CAUTION
This integrated circuit can be damaged by ESD. SG Micro-electronics recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
TYPICAL APPLICATION
3
SGM4890
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT+ or VOUT- Large Sine Signal Response
Large Signal Step Response V+ = 2.6V Output Voltage(500mV/div)
Output Voltage(500mV/div)
V+ = 2.6V
Time(10s/div)
Time(2s/div)
VOUT+ or VOUT- Large Sine Signal Response V+ = 3V Output Voltage(500mV/div)
Large Signal Step Response V+ = 3V Output Voltage(500mV/div)
Time(5s/div)
Time(2s/div)
VOUT+ or VOUT- Large Sine Signal Response V+ = 3.6V Output Voltage(500mV/div)
Large Signal Step Response V+ = 3.6V Output Voltage(500mV/div)
Time(5s/div)
Time(2s/div)
4
SGM4890
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT+ or VOUT- Large Sine Signal Response V+ = 5V Output Voltage(500mV/div)
Large Signal Step Response V+ = 5V Output Voltage(500mV/div)
Time(5s/div)
Time(5s/div)
Small Signal Frequency Response 3 V+ = +5V,3V,2.6V VIN = -10dBm Normalized Gain(dB) 0
Quiescent Current vs.Temperature 7 6 Quiescent Current(mA) 5 4 3 2 1 V+ = 3V V+ = 2.6V
V+ = 5V
V+ = 3.6V
-3
-6
-9 0.01
0
0.1 1 Frequency(MHz) 10
-40
-20
0 20 40 Temperature(ae )
60
80
Output Offset Voltage vs.Temperature 2 V+ = 5V Output Offset Voltage(mV) Supply Current(mA) 1.6 1.2 0.8 0.4 0 -40 -20 0 20 40 Temperature(ae ) 60 80 4 3 2 5
Supply Current vs.Shutdown Voltage V+ = 5V
OFF 1 0 -1 0
ON
1 2 Shutdown Voltage(V)
3
5
SGM4890
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs.Shutdown Voltage 5 V+ = 3.6V 4 Supply Current(mA) 3 2 OFF 1 0 -1 0 1 2 Shutdown Voltage(V) 3 ON
Supply Current(mA) 5 4 3 V+ = 3V 2 1 0 -1 0 1 2 Shutdown Voltage(V) 3 V+ = 2.6V Supply Current vs.Shutdown Voltage V+ = 5V V+ = 3.6V
Clipping(Dropout) Voltage vs.Supply Voltage 0.9 0.8 Dropout Voltage(V) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 4 Supply Voltage(V) 5 6 RL = 8 Bottom
Power Dissipation vs.Output Power 1 Power Dissipation (W)
RL = 4 Top RL = 4 Bottom RL = 8 Top
0.8 0.6 0.4 0.2 0 0 0.2
V+ = 5V RL = 8| f = 1kHz THD U 1.0%
0.4 0.6 Output Power (W) 0.8 1
Power Dissipation vs.Output Power 0.3 Power Dissipation(W) 0.25 0.2 0.15 0.1 0.05 0 0 0.1 0.2 0.3 0.4 0.5 Output Power(W) V+ = 3V RL = 8| f = 1kHz THD U 1.0%
6
SGM4890
PACKAGE OUTLINE DIMENSIONS MSOP-8
Symbol
A A1 A2 b c D e E E1 L
Dimensions In Millimeters Dimensions In Inches Min Max Min Max 0.800 1.200 0.031 0.047 0.000 0.200 0.000 0.008 0.760 0.970 0.030 0.038 0.30 TYP 0.012 TYP 0.15 TYP 0.006 TYP 2.900 3.100 0.114 0.122 0.65 TYP 0.026 TYP 2.900 3.100 0.114 0.122 5.100 0.201 4.700 0.185 0.410 0.650 0.016 0.026 0 6 0 6
7
SGM4890
PACKAGE OUTLINE DIMENSIONS CSP-9
0.3800.025 TOP SIDE COATING 0.0350.015
1.500
0.140
9 |A 3
0.3150.020
XXXX 4890YG
2
0.5
1 C B
0.500
A
A1 CORNER
0.2350.020
Note: All linear dimensions are in millimeters.
8
1.500
SGM4890
REVISION HISTORY
Location
09/2007--Preliminary Datasheet 11/2007--Data Sheet REV.A
Page
SG Microelectronics Co., Ltd
A2608, NO.72 North Road Xisanhuan, Haidian District, Beijing, China 100037 Tel: 86-10-51798160/80 Fax: 86-10-51798180-803 www.sg-micro.com
9
SGM4890

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