LM49101TM/NOPB National Semiconductor, LM49101TM/NOPB Datasheet - Page 19

• Manufacturer Part Number: LM49101TM/NOPB
• Description: IC AUDIO SUBSYSTM 1.3W AB 25USMD
• Manufacturer: National Semiconductor
• Series: Boomer®, PowerWise®r
• Type: Class ABr

Specifications of LM49101TM/NOPB

• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.3W x 1 @ 8 Ohm; 45mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Differential Inputs, I²C, Shutdown, Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 25-MicroSMD
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo
• Audio Amplifier Function: Headphone/Speaker
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): 3/5V
• Power Supply Requirement: Triple
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 90dB
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): 1.7/1.8/2.7V
• Dual Supply Voltage (max): 2.9/5.5V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 25
• Package Type: uSMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM49101TMTR

M : MIN, Mono differential input
L : LIN, Left single-ended input
R : RIN, Right single-ended input
SD : Shutdown
G
G
G
M
L
R
Bits
3:0
: Left_Vol setting determined by the Left Input Volume Control register, See Table 6.
: Right_Vol setting determined by the Right Input Volume Control register, See Table 6.
: Mono_Vol setting determined by the Mono Input Volume Control register, See Table 6.
4
5
Mode_Control These bits determine how the input signals are mixed and routed to the outputs.
EP Bypass
HPR_SD
Field
This bit sets the headphone amplifiers to normal mode or mono mode.
This bit is used to control the analog switch to have the BYPASS inputs drive the loudspeaker outputs.
D
3
Value
Value
D
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
2
0
1
0
1
D
TABLE 4. Output Mode Control Register (see key below table)
1
D
0
Normal stereo headphone operation.
Disable right headphone output.
Normal output mode operation with analog switch off.
Loudspeaker and headphone amplifiers go into shutdown mode and Bypass (Receiver) path
enable with the analog switch on.
Mode
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
G
G
G
G
Headphone
L
L
L
L
G
G
G
G
x L + G
x L + G
x L + G
x L + G
G
G
G
G
M
M
M
M
Left
M/2
M/2
M/2
M/2
SD
SD
SD
SD
D3
L
L
L
L
x M/2
x M/2
x M/2
x M/2
x L
x L
x L
x L
Headphone
M
M
M
M
x
x
x
x
G
G
G
G
19
Headphone
R
R
R
R
G
G
G
G
x R + G
x R + G
x R + G
x R + G
G
G
G
G
M
M
M
M
Right
M/2
M/2
M/2
M/2
R
R
R
R
D2
SD
SD
SD
SD
x M/2
x M/2
x M/2
x M/2
x R
x R
x R
x R
Description
M
M
M
M
x
x
x
x
Status
Status
D1
2 x (G
2 x (G
2 x (G
2 x (G
2 x (G
2 x (G
2 x (G
2 x (G
Loudspeaker
+ G
+ G
+ G
+ G
L
L
L
L
L
L
L
L
G
G
G
G
x L + G
x L + G
x L + G
x L + G
x L + G
x L + G
x L + G
x L + G
M
M
M
M
SD
SD
SD
SD
M
M
M
M
x M
x M
x M
x M
x M
x M
x M
x M
R
R
R
R
R
R
R
R
x R)
x R)
x R)
x R)
x R)
x R)
x R)
x R)
D0
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