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LM48100Q-Q1 Datasheet Preview

LM48100Q-Q1 Datasheet

1.3-W Audio Power Amplifier

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LM48100Q-Q1
SNAS470E – OCTOBER 2008 – REVISED NOVEMBER 2015
LM48100Q-Q1 Boomer™ Mono, 1.3-W Audio Power Amplifier With Output Fault Detection
and Volume Control
1 Features
1 Output Fault Detection
• I2C Volume and Mode Control
• Input Mixer and Multiplexer
• High PSRR
• Individual 32-Step Volume Control
• Short Circuit and Thermal Protection
• Advanced Click-and-Pop Suppression
• Low-Power Shutdown Mode
• Available in 14-Pin HTSSOP Package
• Key Specifications:
– Output Power at VDD = 5 V, RL = 8 ,
THD+N 1% 1.3 W (Typical)
– Quiescent Power Supply Current at 5 V,
6 mA (Typical)
– PSRR at 1 kHz 74 dB (Typical)
– Shutdown current 0.01 μA (Typical)
2 Applications
• Automotive Instrument Clusters
• Hands-Free Car Kits
• Medical
3 Description
The LM48100Q-Q1 is a single supply, mono, bridge-
tied load amplifier with I2C volume control, ideal for
automotive applications. A comprehensive output
fault detection system senses the load conditions,
protecting the device during short circuit events, as
well as detecting open circuit conditions.
Operating from a single 5-V supply, the LM48100Q-
Q1 delivers 1.3 W of continuous output power to an 8
load with < 1% THD+N. Flexible power supply
requirements allow operation from 3 V to 5.5 V. High
power supply rejection ratio (PSRR), 74 dB at 1 kHz,
allows the device to operate in noisy environments
without additional power supply conditioning.
The LM48100Q-Q1 features dual audio inputs that
can be mixed/multiplexed to the device output. Each
input path has its own independent, 32-step volume
control. The mixer, volume control and device mode
select are controlled through an I2C compatible
interface. An open drain FAULT output indicates
when a fault has occurred. Comprehensive output
short circuit and thermal overload protection prevent
the device from being damaged during a fault
condition.
A low power shutdown mode reduces supply current
consumption to 0.01 µA. Superior click and pop
suppression eliminates audible transients on power-
up/down and during shutdown. The LM48100Q-Q1 is
available in an 14-pin HTSSOP PowerPAD™ IC
package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM48100Q-Q1
HTSSOP (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Audio Amplifier Application Circuit
3.0V to 5.5V
CB
1 PF
CB
0.1 PF
PVDD
VDD
CIN1
0.1 PF
IN1
VOLUME CONTROL
-80 dB TO +18 dB
OUTA
CBIAS
2.2 PF
BIAS
CIN2
0.1 PF
IN2
+1.8V to +5.5V
CB
0.1 PF
I2CVDD
SDA
SCL
ADR
BIAS
VOLUME CONTROL
-80 dB TO +18 dB
MIXER/MULITPLEXER
I2C CONTROL
+6 dB
FAULT
DETECTION
OUTB
VDD
RPU
1.5 k:
FAULT
GND
PGND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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LM48100Q-Q1 Datasheet Preview

LM48100Q-Q1 Datasheet

1.3-W Audio Power Amplifier

No Preview Available !

LM48100Q-Q1
SNAS470E – OCTOBER 2008 – REVISED NOVEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics for VDD = 5 V .................... 5
6.6 Electrical Characteristics for VDD = 5 V at Extended
Temperature Limits .................................................... 5
6.7 Electrical Characteristics for VDD = 3.6 V ................. 6
6.8 Electrical Characteristics for VDD = 3.6 V at Extended
Temperature Limits .................................................... 7
6.9 I2C Interface Characteristics for VDD = 5 V, 2.2 V
I2C VDD 5.5 V .......................................................... 8
6.10 I2C Interface Characteristics for VDD = 5 V, 1.8 V
I2C VDD 2.2 V .......................................................... 8
6.11 Typical Characteristics ............................................ 9
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 15
7.5 Programming........................................................... 16
7.6 Register Maps ......................................................... 17
8 Application and Implementation ........................ 18
8.1 Application Information............................................ 18
8.2 Typical Application .................................................. 18
9 Power Supply Recommendations...................... 20
10 Layout................................................................... 20
10.1 Layout Guidelines ................................................. 20
10.2 Layout Example .................................................... 21
11 Device and Documentation Support ................. 22
11.1 Community Resources.......................................... 22
11.2 Trademarks ........................................................... 22
11.3 Electrostatic Discharge Caution ............................ 22
11.4 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
10/14/08
10/20/08
11/07/08
11/12/08
03/21/2013
11/2015
REVISION
1.0
1.01
1.02
1.03
D
E
NOTES
Initial release.
Text edits.
Added a column (Limits) in the Electrical tables.
Text edits.
Changed layout of the National Data Sheet to TI format
Added Pin Configuration and Functions section, ESD Ratings table, Feature Descriptionsection,
Device Functional Modes, Application and Implementation section, Power Supply
Recommendations section, Layoutsection, Device and Documentation Supportsection, and
Mechanical, Packaging, and Orderable Information section
Removed LM48100Q-Q1TL Demo board Bill of Materials table.
2
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Copyright © 2008–2015, Texas Instruments Incorporated
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Part Number LM48100Q-Q1
Description 1.3-W Audio Power Amplifier
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