LM49200TLX/NOPB National Semiconductor, LM49200TLX/NOPB Datasheet - Page 21

• Manufacturer Part Number: LM49200TLX/NOPB
• Description: IC AUDIO SUB 1.25W AB 20USMD
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM49200TLX/NOPB

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.25W x 2 @ 8 Ohm; 38mW 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: 20-MicroSMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM49200TLX

Demo Board Circuit
Demonstration Board
The demonstration board (see Figure 5) has connection and
jumper options to be powered from the USB bus, from exter-
nal power supplies or a combination of both. Additional op-
tions are to power I
or separate power supplies, as long as the voltage limits for
each power supply are not exceeded. See the Operating Rat-
ings for each supply's limit range. When powered from the
USB bus the I
2
CV
DD
2
CV
will be set to 3.3V and the V
DD
and V
DD
from a single power supply
FIGURE 5. Demo Board Circuit
DD
will be set
21
to 5V. Jumper headers J13 and J12 must be set accordingly.
If a single power supply for I
header J5 should be used with a jumper added to header J11
to connect I2CV
to J5.
Connection headers J1 and J2 are provided along with the
stereo headphone jack J4 for easily connection and monitor-
ing of the headphone outputs.
DD
to the external supply voltage connected
2
CV
DD
and V
DD
is desired then
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