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Operation
1.2TPA3100D2 EVM Specifications
VCC | Supply voltage range | 10 V to 26 | V |
ICC | Supply current | 4 A max |
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PO | Continuous output power per channel, 8 Ω, VCC = 18 V, THD + N = 3.5% | 20 W |
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RL | Minimum load impedance | 3.2 Ω |
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2 Operation
2.1Quick Start List for Stand-Alone Operation
Follow these steps to use the TPA3100D2 EVM
2.1.1Power Supply
1.Ensure that all external power sources are set to OFF.
2.Connect an external regulated power supply adjusted from 10 V – 26 V to the module VCC (J7) and GND (J8) banana jacks taking care to observe marked polarity.
2.1.2Evaluation Module Preparations
2.1.2.1Inputs and Outputs
1.If connecting to a fully differential input or a grounded input (the shield of the RCA jack is GND), remove jumpers J9 and J10 from the EVM board. These are located next to the input jacks J1 and J2. If connecting to a floating source, like a portable CD player, install J9 and J10. After setting the J9 and J10 jumpers appropriately, connect the audio source to J1 (RIGHT) and J2 (LEFT).
2.Connect a speaker across ROUT+ (J6) and ROUT- (J5). Connect another speaker across LOUT+ (J3) and LOUT- (J4).
3.Install both gain jumpers GAIN0 (J12) and GAIN1 (J13). This sets the gain of the amplifier to the lowest level, 20 dB.
4.Remove the jumper at MSTR/SLV (J14). If only one TPA3100D2 is evaluated, it must be configured as the master. If multiple EVMs are connected together using the SYNC output (TP2), the additional EVMs must be configured in the slave mode by installing the J14 jumper.
5.Remove the jumper (J11). This places the device in a latched mode when a
2.1.2.2Control Inputs
1.SD: This terminal is active low. A low signal on the device terminal (< 0.8 V) shuts down the amplifier; a high signal (> 2 V) on the device terminal places the amplifier in the active state. Holding down switch S1 places the amplifier in the SHUTDOWN state. Releasing S1 returns the amplifier to the active state.
2.MUTE: This terminal is active high. A high signal (> 2 V) on this terminal immediately terminates audio playback through the speakers and the outputs stop switching; a low signal (< 0.8 V) enables the device. S2 on the EVM controls the state of the MUTE terminal. Holding down switch S2 places the amplifier in the MUTE state. Releasing S2 returns the amplifier to the active state.
3.GAIN0/GAIN1: Together, these terminals determine the gain of the amplifier. Refer to Table 1. Installing a jumper in J12 or J13 sets the respective terminal to GND. Removing the jumper sets the respective terminals to VREG (~4 V). Removing jumpers INCREASES the gain while installing jumpers DECREASES the gain. Logic levels are TTL compatible.
4.MSTR/SLV: This terminal is used with the SYNC (TP2) output to synchronize the switching frequencies of multiple TPA3100D2 devices. For example, with 2 devices, one would be configured as the MASTER by removing the J14 jumper. The other EVM would be configured as the SLAVE device by installing a jumper in the J14 location. Logic levels are TTL compatible.
SLOU179 | TPA3100D2 Audio Power Amplifier Evaluation Module With LC Filter | 3 |
