LM49101TM/NOPB National Semiconductor, LM49101TM/NOPB Datasheet - Page 25

• 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

Demo Board Circuit
Demonstration Board
The demonstration board (see Figure 5) has connection and
jumper options to be powered partially from the USB bus or
from external power supplies. Additional options are to power
the I
power supply or separate power supplies. The headphone
amplifier and charge pump can also be powered from the
same supply as long as the voltage limits for each power sup-
ply are not exceeded, although the option is not built into the
board. See theOperating Ratings for each supply's range lim-
2
C logic and loudspeaker amplifier (V
DD
LS) from a single
FIGURE 5. Demo Board Circuit
25
it. When powered from the USB bus the I
3.3V and the V
J
I
with a jumper added to header J
external supply voltage connected to J
Connection headers J
stereo headphone jack J
ing of the headphone outputs.
2
12
CV
must be set accordingly. If a single power supply for
DD
and V
DD
DD
LS is desired then header J
LS will be set to 5V. Jumper headers J
1
and J
4
for easily connection and monitor-
2
are provided along with the
11
to connect I
5
(see Figure 5).
2
CV
5
DD
should be used
2
will be set to
CV
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DD
30086201
13
to the
and