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2.2
Power Up
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Reference
Reference
Table 1. Gain Settings
Amplifier Gain Setting (typ)
GAIN1
(1)
GAIN0
(1)
V/V
dB
0
0
2
6
0
1
4
12
1
0
8
18
1
1
16
24
(1)
0 = Jumper installed, 1 = Jumper not installed
2.1.2.3
Shutdown Controls
1. The TPA2012D2 provides independent shutdown controls so that each channel can be controlled
separately. The shutdown pins, SDL and SDR, are active low. This means that a low voltage (ground)
on this pin places the appropriate channel in shutdown mode. Using the pushbuttons provided on the
EVM, the TPA2012D2 can be placed in shutdown by pressing and holding the button(s) down. Both
buttons must be depressed in order for both channels of the TPA2012D2 to turn off. When the buttons
are released, the appropriate channel on the device restarts.
2. The jumper J1 can be used to tie SDL and SDR signals together. With jumper J1 installed, both
channels can be placed in shutdown by pressing either SDL or SDR. This is the default configuration
of the EVM.
1. Verify the correct connections as described in Sections 2.1.1 and 2.1.2.
2. Verify the voltage setting of the power supply is between 2.5 V and 5.5 V and turn ON the power
supply. Proper operation of the EVM should begin.
3. Adjust the audio signal source as needed.
This section includes the EVM schematic, parts list, and board layout reference.
TPA2012D2 Audio Power Amplifier Evaluation Module
SLOU174A – February 2005 – Revised April 2005
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