SGM4890 Shengbang Microelectronics, SGM4890 Datasheet

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SGM4890

Manufacturer Part Number
SGM4890
Description
1.1 Watt Audio Power Amplifier
Manufacturer
Shengbang Microelectronics
Datasheet

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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)when it drives an 8Ω
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 output coupling
capacitors or bootstrap capacitors, and therefore is
ideally suited for mobile phone and other low voltage
applications where minimal power consumption is a
primary requirement.
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 1µF bypass capacitor, it offers
110ms wake up time when V
The SGM4890 is available in CSP-9 and MSOP-8
packages. It operates over an ambient temperature range
of –40℃ to +85℃.
APPLICATIONS
Portable Systems
MP3 Players
Mobile Phone
PDAs
GPS
SG Microelectronics Co, Ltd
Tel: 86/10/51798160/80
www.sg-micro.com
+
is equal to 5.0V.
PIN CONFIGURATIONS
1.1 Watt Audio Power Amplifier
FEATURES
• Ideal for Notebook Computers, PDAs, and
• 1.1W to 8-Ω BTL Load from 5V Supply at
• Excellent PSRR: Direct Connection to the Battery
• Fast Turn On Time
• Unity Gain Stable
• 2.5V to 5.5V Operation
• Shutdown Current: 0.01µA Typical
• Shutdown Pin is Compatible with 1.8V Logic
• –40℃ to +85℃ Operating Temperature Range
• Small Packaging
Other Small Portable Audio Devices
THD =1% (Typical)
Bypass
SHDN
A
B
C
+IN
-IN
4
1
3
2
Bypass
GND
-IN
1
CSP-9
MSOP-8
GND
V
V
2
O1
O2
SHDN
+IN
V
3
(Top View)
+
7
5
8
6
V
GND
V
V
REV. A
O2
+
O1

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SGM4890 Summary of contents

Page 1

... 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 www.DataSheet4U.com of delivering 1.1W of continuous output power with less than 1% distortion(THD + N)when it drives an 8Ω ...

Page 2

... PSRR + +3. 1kHz + V = +3. +2. + +3. 1µ BYPASS V = +3. +2. + +3. Ω Load + SDT V = +3. +2. SGM4890 UNITS MIN TYP MAX 3.7 5.7 mA 3.5 7 5.5 9 3.3 5.3 0.01 4.0 µA 1 1.10 0.58 W 0.40 0.30 0.01 % -66 -63 -63 -62 dB -72 -68 -66 -64 110 110 ms 100 100 10 16 µs 17.8 17.8 SGM4890 ...

Page 3

... 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 specifications. 3 MARKING OPTION INFORMATION 4890YG SGM4890YMS not to meet its published SGM4890 ...

Page 4

... Large Sine Signal Response OUT+ OUT Time(5µs/div Large Sine Signal Response OUT+ OUT 3.6V + Time(5µs/div) Large Signal Step Response V = 2.6V + Time(2µs/div) Large Signal Step Response Time(2µs/div) Large Signal Step Response V = 3.6V + Time(2µs/div) 4 SGM4890 ...

Page 5

... Large Signal Step Response Time(5 µ s/div) Quiescent Current vs.Temperature 3. 2. -40 - Temperature(℃) Supply Current vs.Shutdown Voltage OFF Shutdown Voltage(V) SGM4890 80 3 ...

Page 6

... Bottom 8Ω 1kHz THD ≤ 1.0% 0.3 0.4 0.5 6 Supply Current vs.Shutdown Voltage 3. 2. Shutdown Voltage(V) Power Dissipation vs.Output Power 1 0.8 0.6 0 8Ω 1kHz THD ≤ 1. 0.2 0.4 0.6 0.8 Output Power (W) SGM4890 3 1 ...

Page 7

... TYP 0.15 TYP 2.900 3.100 0.65 TYP 2.900 3.100 4.700 5.100 0.410 0.650 0° 6° 7 Min Max 0.031 0.047 0.000 0.008 0.030 0.038 0.012 TYP 0.006 TYP 0.114 0.122 0.026 TYP 0.114 0.122 0.185 0.201 0.016 0.026 0° 6° SGM4890 ...

Page 8

... PACKAGE OUTLINE DIMENSIONS CSP-9 www.DataSheet4U.com TOP SIDE COATING Note: All linear dimensions are in millimeters. 0.380±0.025 0.035±0.015 0.235±0.020 A1 CORNER 8 1.500 9 ×Φ0.315±0.020 0.140 0.500 SGM4890 ...

Page 9

... REVISION HISTORY Location 09/2007—Preliminary Datasheet 11/2007—Data Sheet REV.A www.DataSheet4U.com 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 Page SGM4890 ...

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