Datasheet
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4 System Interfaces
4.1 Power Supply (PSU) Interface (J7 and J8)
Outputstagepowersupply
RESET
>1ms
Systempowersupply
4.2 J9/J10 Amplifier Controller Connectors
System Interfaces
– Note: The default gain setting of the TAS5086 GUI is 0 dB. If you are connecting directly from a
music source (CD player) for input and speakers for output, you may want to use the volume
control function of GUI to reduce the gain before the program material is started.
This section describes the TAS5132DDV2EVM board in regards to power supplies and system interfaces.
The TAS5132DDV2EVM module must be powered from a well regulated external power supply. Good
audio performance requires a stabilized power supply with low ripple voltage and low output impedance.
Note: The length of power supply cable must be minimized. Increasing the length of the PSU
cable is equal to increasing the distortion for the amplifier at high output levels and low
frequencies.
Maximum output stage supply voltage depends of the speaker load resistance. For the recommended
maximum supply voltage, seen the TAS5132 data sheet (SLES190 ).
Table 3. Recommended Supply Voltages
Voltage Limitations
Description Current Recommendations
(4- Ω Load)
Output stage power supply 12 V – 19 V 5 A
(1)
(1)
The rated current corresponds to 2-channel full scale (25 W each).
The recommended TAS5132 power-up sequence is shown in Figure 4 . For proper TAS5132 operation,
the RESET signal should be kept low during power up. RESET is pulled low during power up for 200 ms
by the onboard reset generator (U2).
Figure 4. Recommended Power-Up Sequence
Table 4. J7 and J8
Function Connector
PVDD J7
Ground J8
Table 5. J9/J10 Pin Description Amplifier/Controller Connector
Net-Name at
Pin No. Description
Schematics
1, 2, 5, 6 ,10, 11 DGND Low-current ground for modulator/controller
TAS5132DDV2EVM for the TAS5132 Digital Amplifier Power Output Stage10 SLLU097 – April 2007
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