LM48823TLEVAL National Semiconductor, LM48823TLEVAL Datasheet

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LM48823TLEVAL

Manufacturer Part Number
LM48823TLEVAL
Description
BOARD EVAL LM48823 16MICROSMD
Manufacturer
National Semiconductor
Series
Boomer®r
Datasheet

Specifications of LM48823TLEVAL

Amplifier Type
Class AB
Output Type
1-Channel (Mono)
Voltage - Supply
2 V ~ 4.5 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
LM48823
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Max Output Power X Channels @ Load
-
© 2010 National Semiconductor Corporation
Mono, Bridge-Tied Load, Ceramic Speaker Driver with I
Volume Control and Reset
General Description
The LM48823 is a single supply, mono, ceramic speaker driv-
er with an integrated charge-pump, designed for portable
devices, such as cell phones, where board space is at a pre-
mium. The LM48823 charge pump allows the device to deliver
5.4V
The LM48823 features high power supply rejection ratio
(PSRR), 93dB at 217Hz, allowing the device to operate in
noisy environments without additional power supply condi-
tioning. Flexible power supply requirements allow operation
from 2.0V to 4.5V. The LM48823 features an active low reset
input that reverts the device to its default state. Additionally,
the LM48823 features a 32-step I
power Shutdown mode reduces supply current consumption
to 0.01µA.
The LM48823’s superior click and pop suppression elimi-
nates audible transients on power-up/down and during shut-
down. The LM48823 is available in an ultra-small 16-bump
micro SMD package (2mmx2mm).
Boomer® is a registered trademark of National Semiconductor Corporation.
Tru-GND is a trademark of National Semiconductor Corporation.
RMS
from a single 4.2V supply.
2
C volume control. The low
300684
LM48823
Key Specifications
Features
Applications
■ 
■ 
■ 
■ 
R
at 4.2V
Integrated Charge Pump
Bridge-tied Load Output
High PSRR
I
Reset Input
Advanced Click-and-Pop Suppression
Low Supply Current
Minimum external components
Micro-power shutdown
Available in space-saving 16-bump µSMD package
Cell phones
Smart phones
Portable media devices
Notebook PCs
Output Voltage at V
Quiescent Power Supply Current
PSRR at 217Hz
Shutdown current
2
L
C Volume and Mode Control
= 2.2µF + 15Ω THD+N
DD
= 4.2V,
1%
October 8, 2010
5.4V
www.national.com
0.01μA (typ)
3.3mA (typ)
93dB (typ)
RMS
2
(typ)
C

Related parts for LM48823TLEVAL

LM48823TLEVAL Summary of contents

Page 1

... The LM48823’s superior click and pop suppression elimi- nates audible transients on power-up/down and during shut- down. The LM48823 is available in an ultra-small 16-bump micro SMD package (2mmx2mm). Boomer® registered trademark of National Semiconductor Corporation. Tru-GND is a trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation LM48823 Key Specifications ■ ...

Page 2

Typical Application www.national.com FIGURE 1. Typical Audio Amplifier Application Circuit 2 300684e1 ...

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Connection Diagrams TL Package 2mm x 2mm x 0.8mm Top View See NS Package Number TLA1611A Order Number Package LM48823TL 16–Bump micro SMD LM48823TLX 16–Bump micro SMD 16–Bump micro SMD Marking 300684e0 Ordering Information Package DWG # Transport Media TLA1611A ...

Page 4

Pin Designator www.national.com TABLE 1. Bump Descriptions Pin Name SV Signal Power Supply DD SGND Signal Ground BYPASS Amplifier Reference Bypass INA Amplifier Inverting ...

Page 5

... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (Note 1) Storage Temperature Input Voltage Power Dissipation (Note 3) ESD Rating (Note 4) ESD Rating (Note 5) Audio Amplifier Electrical Characteristics V ...

Page 6

I2C Interface Characteristics V The following specifications apply for A apply for T = 25°C. A Symbol Parameter t SCL period 1 t SDA Setup Time 2 t SDA Stable Time 3 t Start Condition Time 4 t Stop Condition ...

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Typical Performance Characteristics THD+N vs Frequency V = 3.6V DD THD+N vs Output Voltage = 1μF+15Ω 1kHz A = 6dB Output Voltage vs Frequency = 1μF+15Ω,THD 4.2V THD+N ...

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Power Consumption vs Output Voltage = 1μF+15Ω 3.6V Power Consumption vs Output Voltage = 1μF+15Ω 4.2V Output Voltage vs Supply Voltage = 1μF+15Ω, THD www.national.com Power ...

Page 9

PSRR vs Frequency V = 4.2V 200mV DD RIPPLE P-P = 1μF+15Ω, Input referred Z L 300684g4 Shutdown Current vs Supply Voltage No Load 300684g6 Supply Current vs Supply Voltage No Load 9 300684g5 www.national.com ...

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Application Information COMPATIBLE INTERFACE The LM48823 is controlled through an I interface that consists of a serial data line (SDA) and a serial clock (SCL). The clock line is uni-directional. The data line is bi-directional (open drain). ...

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B7 B6 Chip Address 1 1 Register Name Mode Control VOL4 GENERAL AMPLIFIER FUNCTION The LM48823 is a ceramic speaker driver that utilizes National’s inverting charge pump technology to deliver over 15V 2.2µF ceramic speaker while operating from a single ...

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VOLUME CONTROL Volume Step VOL4 ...

Page 13

SHUTDOWN FUNCTION The LM48823 features a low-power shutdown mode that dis- ables the device, lowering the quiescent current to 0.01µA. Set bits B1 (ENABLE_A) and B2 (ENABLE_B disable the amplifiers and charge pump. Set both ENABLE_A and ...

Page 14

PCB Layout Guidelines Minimize trace impedance of the power, ground and all output traces for optimum performance. Voltage loss due to trace resistance between the LM48823 and the load results in de- creased output power and efficiency. Trace resistance be- ...

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Demo Board Schematic 15 www.national.com ...

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PC Board Layout FIGURE 8: Top Silkscreen Layer FIGURE 10: Layer 2 FIGURE 12: Bottom Layer www.national.com 300684f0 FIGURE 9: Top Layer 300684e7 FIGURE 11: Layer 3 300684e6 FIGURE 13: Bottom Silkscreen 16 300684f1 300684e8 300684e9 ...

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Revision History Rev Date 1.0 06/27/08 1.01 07/15/08 1.02 10/08/10 Description Initial release. Edited the Ordering Information table. Updated some Limits (under Gain) in the Volume Control table. 17 www.national.com ...

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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Bump micro SMD Order Number LM48823TL NS Package Number TLA1611A X = 1.970± 0. 1.970 ± 0. 0.6 ± 0.075 ...

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Notes 19 www.national.com ...

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... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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