Texas Instruments TAS5514B User manual

TAS5514B Evaluation Module (EVM)
User's Guide
Literature Number: SLOU345
June 2012

Contents
1 Quick-Start Guide ................................................................................................................ 4
1.1 Overview .................................................................................................................. 4
1.2 Connections .............................................................................................................. 4
1.3 Initial Power Up .......................................................................................................... 5
2 EVM Description ................................................................................................................. 5
2.1 Description of Inputs .................................................................................................... 5
2.2 Description of Outputs .................................................................................................. 5
2.3 Controls ................................................................................................................... 6
2.4 Indicator Description .................................................................................................... 7
3 TAS5514B EVM Schematic ................................................................................................... 7
4 Board Layouts .................................................................................................................... 8
5 Bill of Materials ................................................................................................................. 11
6 Related Documentation from Texas Instruments ................................................................... 12
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List of Figures
1 Connections for Input, Speaker Loads, and Power .................................................................... 4
2 Front Panel Labels.......................................................................................................... 5
3 Wiring Harness for Power and Speaker Connections.................................................................. 6
4 Power and Speaker Connections to the EVM........................................................................... 6
5 TAS5514BDKD Top Layer................................................................................................. 8
6 TAS5514BDKD Mid Layer Level 1 ....................................................................................... 9
7 TAS5514BDKD Mid Layer Level 2 ....................................................................................... 9
8 TAS5514BDKD Bottom Layer ........................................................................................... 10
9 TAS5514BDKD Top Silkscreen Overlay ............................................................................... 10
10 TAS5514BDKD Bottom Silkscreen Overlay............................................................................ 11
List of Tables
1 Bill of Materials for TAS5514BDKD..................................................................................... 11
3
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User's Guide
SLOU345–June 2012
TAS5514B Evaluation Module (EVM) User's Guide
The TAS5514B evaluation module (EVM) is intended to be used to demonstrate the capabilities of the
device. All the device features can be accessed through the hardware supplied. This user’s guide contains
a description of the EVM. Included are the EVM schematics, bill of materials, and the board layout.
1 Quick-Start Guide
This section provides a guide to set up and power up the EVM without the details of its operation. For a
more-detailed description, read the complete user's guide.
1.1 Overview
The EVM consists of a single printed circuit board (PCB) mounted inside a metal chassis for EMC testing
and a power/speaker cable connector assembly. The EVM is different than the TAS5414B EVM as it does
not need an I2C controller board to function.
1.2 Connections
The connections are for an analog signal for the input, speaker loads, and power. The audio inputs are
made through the four RCA connectors. The power connections and speaker connections are made using
the 10-pin connector.
The basic connections are: PVDD or power is connected to the EVM through the supplied 10-pin
connector with the twisted red and black wires. The speakers or loads are also connected through the
same 10-pin connector with the twisted red and white wires. See Figure 1for EVM input details.
Figure 1. Connections for Input, Speaker Loads, and Power
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1.3 Initial Power Up
Before applying power, check to make sure the standby control switch is in the Standby OFF position, as
shown in Figure 2.
Figure 2. Front Panel Labels
Apply power: the Standby, Mute, and Power LEDs should be on. This indicates that the unit is powered,
and the TAS5514B is in Standby Mode. The TAS5514B is place into play mode by simply moving the
toggle switch to the Standby OFF position. The Fault LED may flash once and then go off. This is the
device automatically clearing the faults at startup.
2 EVM Description
2.1 Description of Inputs
2.1.1 Analog Inputs
The TAS5424B EVM provides balanced input and the TAS5514B EVM provides unbalanced (single-
ended) inputs. The four RCA jacks on either EVM are provided for the audio input. The unbalanced inputs
have the shield of the RCA connected to ground. The balanced inputs have the plus (+) input on the
center pin of the RCA and the minus (–) input on the shield. The balanced ground can be connected to
the chassis or Power– (GND).
2.1.2 Power
The EVM requires one dc power connection. The connection is made through a 10-pin supplied
connector. The black wire is ground and the red wire is connected to PVDD, which can range from 6 to 24
Vdc.
2.2 Description of Outputs
2.2.1 Speaker and Power Connections
The 10-pin connector on the EVM and the wiring harness provide the power connections and the speaker
connections. The power connection consists of a pair of red and black twisted wires, which correspond to
the plus (+) input and minus (–) input, respectively. This pair of wires must be attached to a power supply.
The speaker connections consist of the remaining four pairs of red and white twisted wire. Each pair of red
and white wires corresponds with a channel. The red wire corresponds to the plus (+) output, and the
white wire corresponds to the minus (–) output. These wires must be terminated to a speaker load or
resistive load.
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Ch. 4
Ch. 3
Ch. 2
Ch. 1
Power
EVM Description www.ti.com
See Figure 1for more details on the 10-pin connector on the EVM, Figure 3for more details about the
speaker cables, and Figure 4for the power and speaker-cables connections to the EVM.
Figure 3. Wiring Harness for Power and Speaker Connections
Figure 4. Power and Speaker Connections to the EVM
NOTE: Do not connect any of the speaker outputs to ground. The TAS5514B has full bridged
outputs; connecting to ground triggers a fault.
The outputs can be paralleled by connecting the plus (+) of one channel to the plus (+) of the other
channel. The minus (–) connection of one channel and the minus (–) connection of the other channel must
be connected also. See the data sheet for more details on parallel outputs (PBTL).
2.3 Controls
2.3.1 Standby
The standby switch is located on the front panel. Having the toggle in the Standby ON position forces the
TAS5514B into the standby mode. This is the same as a power-on reset (POR). POR shuts down the
device.
Setting the switch to the Standby OFF position puts the device in the EVM into the power up mode. The
amplifier will perform load diagnostics and then will place the amplifier outputs into play mode. Please
note, that any channel that has a shorted load, short to ground, or a short to power will not be placed into
play mode.
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www.ti.com TAS5514B EVM Schematic
2.4 Indicator Description
There are five LED indicators on the chassis next to the standby switch. The LED farthest away from the
standby switch is for the 3.3 Vdc supply. The 3.3 V supply is needed for the LEDs and the standby circuit.
The other four LEDs output pins: FAULT, CLIP_OTW, STANDBY, and MUTE. In normal play mode, these
four LEDs should not light.
3 TAS5514B EVM Schematic
The schematic for the TAS5514BDKD EVM is shown on the following pages.
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Board Layouts www.ti.com
TAS5514BDKD EVM Schematic
4 Board Layouts
Figure 5. TAS5514BDKD Top Layer
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Figure 6. TAS5514BDKD Mid Layer Level 1
Figure 7. TAS5514BDKD Mid Layer Level 2
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Board Layouts www.ti.com
Figure 8. TAS5514BDKD Bottom Layer
Figure 9. TAS5514BDKD Top Silkscreen Overlay
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