LM49450SQ/NOPB National Semiconductor, LM49450SQ/NOPB Datasheet - Page 4

• 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

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DI
I
SPEAKER AMPLIFIERS (Headphone Amplifiers Disabled, HPS = 0)
I
V
P
THD+N
PSRR
η
Xtalk
SD
DDLS
OS
OUT
Absolute Maximum Ratings
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 Susceptibility(Note 4)
ESD Susceptibility (Note 5)
Junction Temperature (T
Thermal Resistance
Electrical Characteristics V
8)
otherwise specified. Limits apply for T
DD
Symbol
The following specifications apply for Headphone: A
Digital Core Supply Current
Shutdown Supply Current
Analog Supply Current
Output Offset Voltage
Output Power
Total Harmonic Distortion
Power Supply Rejection Ratio
Efficiency
Crosstalk
JMAX
Parameter
)
A
= 25°C.
–0.3V to V
−65°C to +150°C
Internally Limited
DD
(Notes 1, 2)
DV
f
Digital Current
Analog Current
f
Line Inputs Active, No Load
DAC Active
Line Inputs Active
R
THD+N = 1%
THD+N = 10%
R
THD+N = 1%
THD+N = 10%
P
DAC Active
Line Inputs Active
V
DAC Active, Internal Reference
DAC Active, External Reference
Line Inputs Active
P
R
P
DAC Active,
Line Inputs Active
P
DAC Active,
Line Inputs Active
= LSV
MCLK
S
DD
O
RIPPLE
O
O
O
L
L
L
= 48kHz, DAC Active, No Load
DD
= 4Ω, f = 1kHz
= 8Ω, f = 1kHz
= 8Ω
2000V
150°C
= 300mW, f = 1kHz, R
= 650, f = 1kHz
= 500mW, f = 1kHz, R
= 500mW, f = 10kHz, R
+0.3V
200V
6.0V
= 12.28MHz
V
= 2.7V, f
= 0dB, R
= 200mV
DD
Conditions
4
S
= 3.6V, HPV
= 48kHz,
L(LS)
P-P
θ
θ
Operating Ratings
Temperature Range
Supply Voltage
Headphone Supply Voltage
Digital Core Supply Voltage
(DV
Digital IO Supply Voltage
(IOV
, f = 1kHz
T
= 8Ω, R
JC
JA
MIN
DD
(V
(CPV
DD
)
DD
)
≤
L
L
, LSV
L
T
= 8Ω
= 8Ω
DD
A
= 8Ω
L(HP)
, HPV
≤
T
DD
MAX
= 32Ω, f = 1kHz, C
DD
)
DD
)
= CPV
(Note 6)
Typical
0.03
0.02
0.06
0.07
625
725
9.8
1.2
59
62
67
87
81
77
60
60
9
7
8
8
1
LM49450
DD
(Notes 1, 2)
1
= 2.5V
= C
(Note 7)
1.8V
Limit
−40°C
11.2
2.7V
525
2
13
10
45
45
1
1
2.7V
1.8V
= 2.2μF, unless
≤
≤
≤
IOV
≤
≤
DV
T
V
V
(Notes 2,
A
28.4°C/W
DD
DD
DD
DD
mA (max)
mA (max)
mA (max)
mV (max)
mV (max)
mW (min)
2.4°C/W
≤
μA (max)
μA (max)
dB (min)
(Limits)
≤
≤
≤
≤
Units
+85°C
dB
dB
dB
dB
dB
dB
W
W
W
%
%
%
5.5V
2.7V
4.5V
4.5V