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V
DD
= 3.6 V, 10%
0
0.50
1
1.50
2
2.50
4
9
14
19
24
29
34
P
O
− Output Power − W
R
L
− Load Resistance −
See Note
V
DD
= 5 V, 1%
V
DD
= 2.5 V, 1%
V
DD
= 2.5 V, 10%
V
DD
= 3.6 V, 1%
V
DD
= 3.6 V, 10%
2
Operation
2.1
Quick Start for Stand-Alone Operation
Operation
Figure 1. TPA2012D2 Output Power
Note:
The dashed portion of the curve indicates the region where the TPA2012D2YZH (WCSP)
is thermally limited. Output power in this region will depend on the heat dissipation
provided by the circuit board. TPA2012D2RTJ (QFN) is not thermally limited and can
achieve output power along both the solid and dashed portions of the curves.
This section describes how to operate the TPA2012D2 EVM.
Use the following steps when operating the TPA2012D2 EVM standalone or when connecting the EVM
into existing circuits or equipment.
2.1.1
Power and Ground
1. Ensure the external power sources are set to OFF.
2. Set the power supply voltage between 2.5 V and 5.5 V. When connecting the power supply to the
EVM, make sure to attach the ground connection to the GND header pin first and then connect the
positive supply to the VDD header pin. Verify that the connections are made to the correct header pins.
2.1.2
Inputs and Outputs
2.1.2.1
Audio
1. Ensure that the audio source is set to the minimum level.
2. Connect the audio source to the inputs, INL+/- and INR+/-.
–
For a differential audio source, connect the audio source directlty to the appropriate input header
pins.
–
For a single-ended audio source, connect the audio source to the negative input header pin of the
appropriate channel and ground the positive audio input header pin.
3. Connect speakers (4
Ω
?32
Ω
) to the output pins, OUTL+/- and OUTR+/-.
2.1.2.2
Gain Control
1. The GAIN0 and GAIN1 jumpers control the gain setting of the TPA2012D2. With the jumpers installed,
the G0 and G1 pins are pulled to ground. See
Table 1
for gain setting values.
2
SLOU174A – February 2005 – Revised April 2005
TPA2012D2 Audio Power Amplifier Evaluation Module
