LM49450SQ/NOPB National Semiconductor, LM49450SQ/NOPB Datasheet - Page 9

• Manufacturer Part Number: LM49450SQ/NOPB
• Description: IC AUDIO SUBSYSTEM 2.5W D 32LLP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class Dr

Specifications of LM49450SQ/NOPB

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2.5W x 2 @ 4 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, DAC, Depop, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 32-LLP
• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 1.2W
• Supply Voltage Range: 2.7V To 5.5V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: LLP
• Rohs Compliant: Yes
• For Use With: LM49450SQEVAL - BOARD EVAL FOR LM49450
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM49450SQ; LM49450SQ; LM49450SQTR

Pin Descriptions
18, 24
Pin
10
11
12
13
14
15
16
17
19
20
21
22
23
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
BYPASS
I
CPGND
I
HPGND
I
LSGND
2
2
HPV
HPV
CPV
DGND
2
LSV
Name
MCLK
IOV
S_CLK
RLS+
DV
LLS+
S_SDI
GND
RLS-
SDA
S_WS
LLS-
HPS
HPR
C1P
SCL
REF
HPL
C1N
INR
V
INL
DD
DD
DD
DD
DD
SS
DD
Charge Pump Flying Capacitor Positive Terminal
Charge Pump Ground
I
Digital Ground
I
I
I
Master Clock
I2C Clock Input
Digital Core Power Supply
Digital Interface Power Supply
Analog Ground
DAC Reference Bypass
Right Channel Analog Input
Left Channel Analog Input
Analog Power Supply
Mid-Rail Bias Bypass
Speaker Power Supply
Left Channel Non-Inverting Speaker Output
Left Channel Inverting Speaker Output
Speaker Ground
Right Channel Inverting Speaker Output
Right Channel Non-Inverting Speaker Output
Headphone Amplifier Ground
Headphone Sense Input
Right Channel Headphone Amplifier Output
Headphone Amplifier Power Supply
Left Channel Headphone Amplifier Output
Charge Pump Output and Headphone Amplifier Negative Power Supply.
Charge Pump Flying Capacitor Negative Terminal
Charge Pump Power Supply
2
2
2
2
C Serial Data Input
S Word Select Input
S Serial Data Input
S Clock Input
TABLE 1.
9
Description
www.national.com