Texas Instruments TPA3100D2 User Manual download pdf (Page 4)

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Operation

Table 1. Gain Settings

GAIN1 (J13)

(1)

GAIN0 (J12)

(1)

Amplifier Gain (dB)

ON ON 20

ON OFF 26

OFF ON 32

OFF OFF 36

(1)

OFF = Jumper removed; ON = Jumper installed

2.1.2.3 Control Outputs

1. FAULT: This pin is a TTL compatible output for reporting a short-circuit fault on the output. If the

outputs are shorted to GND, V

, or to each other, this terminal goes high and remains high until one

of the following operations is performed: power is cycled, SHUTDOWN is cycled, or MUTE is cycled. If

jumper J11 is installed, the MUTE terminal is connected directly to the FAULT terminal and a

short-circuit fault is automatically cleared when it occurs.

2.1.3 Power Up

1. Verify correct voltage and input polarity and turn the external power supplies on. The EVM should

begin operation.

2. Adjust the input signal.

3. Adjust the control inputs to the desired settings.

4. If no sound is audible, check the position of the MSTR/ SLV ( J14) jumper. It should be removed if

evaluating a single EVM.

5. Adjust the amplifier gain by installing/removing the gain jumpers, J12 and J13.

4 TPA3100D2 Audio Power Amplifier Evaluation Module With LC Filter SLOU179 – December 2005

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Texas Instruments TPA3100D2 User Manual Page 4