sgm4896 sg-micro, sgm4896 Datasheet

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sgm4896

Manufacturer Part Number
sgm4896
Description
1.15w Fully Differential Audio Power Amplifier
Manufacturer
sg-micro
Datasheet
GENERAL DESCRIPTION
The SGM4896 is a fully differential audio power amplifier
that is designed for portable communication device
applications and demanding applications in mobile
phones. It is capable of delivering 1.15W of continuous
average power to an 8Ω BTL load with less than 1%
distortion (THD+N) from a 5V battery voltage. It operates
from 2.5V to 5.5V power supply.
The SGM4896 features a low-power consumption
shutdown mode. To facilitate this, Shutdown may be
enabled by logic low. Additionally, the SGM4896 features
an internal thermal shutdown protection mechanism.
The SGM4896 contains advanced pop & click circuitry, a
minimal count of external components and low-power
shutdown mode. All these features make SGM4896 ideal
for wireless handsets and other low voltage applications
where
requirement.
The SGM4896 is available in Pb-free CSP-8 package. It
operates over an ambient temperature range of -40℃ to
+85℃.
minimal
SG Micro Limited
www.sg-micro.com
power
consumption
is
a
primary
• Fully Differential Amplifier
• Excellent PSRR: Direct Connection to the Battery
• 1.15W to 8Ω BTL Load from 5V Supply at
• 2.5V to 5.5V Operation
• Low Shutdown Current
• Shutdown Pin is Compatible with 1.8V Logic
• Improved Pop & Click Circuitry
• Thermal Overload Protection Circuitry
• No Output Coupling Capacitors, Bootstrap
• External Gain Configuration Capability
• -40℃ to +85℃ Operating Temperature Range
• Pb-Free CSP-8 Package
FEATURES
APPLICATIONS
Portable Systems
Wireless Handsets
Mobile Phone
Handheld Computers
PDAs
GPS
THD+N < 1% (TYP)
Capacitors Required
SGM4896
1.15W Fully Differential
Audio Power Amplifier
Preliminary Datasheet
Jan. 2008

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sgm4896 Summary of contents

Page 1

... All these features make SGM4896 ideal for wireless handsets and other low voltage applications where minimal power consumption requirement. The SGM4896 is available in Pb-free CSP-8 package. It operates over an ambient temperature range of -40℃ to +85℃. SG Micro Limited www.sg-micro.com SGM4896 1.15W Fully Differential ...

Page 2

... 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. PIN CONFIGURATION SGM4896YG A VO2 V+ B VO1 GND ...

Page 3

... SGM4896 TYPICAL APPLICATION C I 0.39μ 0.39μF SG Micro Limited www.sg-micro.com R F 40kΩ 20kΩ IN1 Bypass SHDN Bias IL Circuitry Bypass C B 1μF (Optional) Bypass IN2 R I 20kΩ GND 1.15W Fully Differential Audio Power Amplifier To Battery C S 1μF ...

Page 4

... SGM4896 ELECTRICAL CHARACTERISTICS Gain = 1 V/ 25℃, unless otherwise noted. A PARAMETER Supply Voltage Shutdown Current Output Offset Voltage Quiescent Power Supply Current Shutdown Voltage Input High Shutdown Voltage Input Low Low-Level Output Voltage High-Level Output Voltage Common Mode Rejection Ratio Specifications subject to changes without notice. ...

Page 5

... SGM4896 ELECTRICAL CHARACTERISTICS Gain = 1 V/ 25℃, unless otherwise noted. A PARAMETER Output Power Total Harmonic Distortion + Noise Power Supply Rejection Ratio (1) Common Mode Rejection Ratio Wake–up Time Shutdown Time Note1: CMRR is affected by the matching between external gain-setting resistor ratios. Specifications subject to changes without notice. ...

Page 6

... SGM4896 TYPICAL PERFORMANCE CHARACTERISTICS THD+N vs. Output Power +5V 8Ω 1kHz 1µF, B Gain= 1V/V 0.1 0.01 0.001 0.01 0.1 Output Power (W) THD+N vs. Frequency 1 0.1 0. 0.39µ =1µF, B Gain = 1V/V 0.001 0.01 0.1 1 Frequency (kHz) Wake-up Time vs. Bypass Capacitor 200 160 120 0.2 0.4 0.6 Bypass Capacitor (µF) SG Micro Limited www ...

Page 7

... SGM4896 TYPICAL PERFORMANCE CHARACTERISTICS Large Sine Signal Response OUT+ OUT- Time (10µs/div) Small Signal Step Response Time (2µs/div) Output Power vs. Load Resistance 1.8 1 3.6V 0 Load Resistance (Ω) SG Micro Limited www.sg-micro.com 20kHz Ω ...

Page 8

... SGM4896 TYPICAL PERFORMANCE CHARACTERISTICS Power Dissipation vs. Output Power 8Ω L 0.8 0 16Ω L 0.4 0 0.2 0.4 0.6 Output Power (W) SG Micro Limited www.sg-micro.com 1kHz THD+N < 1% 0.8 1 1.2 1.4 1.15W Fully Differential Audio Power Amplifier Power Dissipation vs. Output Power 0 8Ω L 0.6 0 3.6V 0 16Ω 1kHz THD+N < ...

Page 9

... SGM4896 PACKAGE OUTLINE DIMENSIONS CSP-8 A1 CORNER TOP VIEW Note: All linear dimensions are in millimeters. SGMICRO is dedicated to provide high quality and high performance analog IC products to customers. All SGMICRO products meet the highest industry standards with strict and comprehensive test and quality control systems to achieve world-class consistency and reliability ...

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