Texas Instruments TPA3124D2 Evaluation Module (EVM) TPA3124D2EVM TPA3124D2EVM Ficha De Dados
Códigos do produto
TPA3124D2EVM
1.2
TPA3124D2EVM Specifications
2
Operation
2.1
Quick Start List for Stand-Alone Operation
2.1.1
Power Supply
2.1.2
Evaluation Module Preparations
www.ti.com
Operation
V
CC
Supply voltage range
10 V to 26 V
I
CC
Supply current
3 A max
P
O
Continuous output power per channel: 8
Ω
, VCC = 24 V, THD+N = 10%
10 W
R
L
Minimum load impedance
4
Ω
Follow these steps to use the TPA3124D2EVM stand-alone or when connecting it into existing circuits or
equipment. Connections to the EVM can be made by inserting stripped wire or using banana plugs for the
power supply and output connections. The inputs accept standard RCA plugs.
equipment. Connections to the EVM can be made by inserting stripped wire or using banana plugs for the
power supply and output connections. The inputs accept standard RCA plugs.
1. Ensure that all external power sources are set to OFF.
2. Connect an external regulated power supply adjusted from 10 V to 26 V to the module VCC (J7) and
2. Connect an external regulated power supply adjusted from 10 V to 26 V to the module VCC (J7) and
GND (J8) banana jacks taking care to observe marked polarity.
Inputs and Outputs
1. Connect a speaker across GND (J5) and +ROUT (J6). Connect another speaker across LOUT (J3)
and GND (J4).
2. Install both gain jumpers GAIN0 (J1) and GAIN1 (J2). This sets the gain of the amplifier to the lowest
level, 20 dB.
3. Connect an analog audio source to Left In (J9) and Right In (J10) using RCA phono plugs.
Control Inputs
1. SHUTDOWN: This terminal is active LOW. A LOW on the device terminal (<0.8 V) shuts down the
amplifier; a HIGH (>2 V) on the device terminal places the amplifier in the active state. Holding down
switch SW1 places the amplifier in the SHUTDOWN state. Releasing SW1 returns the amplifier to the
active state. This terminal is Vcc compliant.
switch SW1 places the amplifier in the SHUTDOWN state. Releasing SW1 returns the amplifier to the
active state. This terminal is Vcc compliant.
2. MUTE: This terminal is active HIGH. A HIGH (>2 V) on this terminal immediately terminates audio
playback through the speakers; a LOW (<0.8 V) enable the devices. The outputs remain switching with
50% duty cycle. SW2 on the EVM controls the state of the MUTE terminal. Holding down switch SW2
places the amplifier in the MUTE state. Releasing SW2 returns the amplifier to the active state. This
terminal is Vcc compliant.
50% duty cycle. SW2 on the EVM controls the state of the MUTE terminal. Holding down switch SW2
places the amplifier in the MUTE state. Releasing SW2 returns the amplifier to the active state. This
terminal is Vcc compliant.
3. GAIN0/GAIN1: Together, these terminals determine the gain of the amplifier (see
). Installing a
jumper in J1 or J2 sets the respective terminal to GND. Removing the jumper sets the respective
terminals to VCC. Removing the jumpers increase the gain whereas installing jumpers decreases the
gain. Logic levels are TTL compatible. These terminals are Vcc compliant
terminals to VCC. Removing the jumpers increase the gain whereas installing jumpers decreases the
gain. Logic levels are TTL compatible. These terminals are Vcc compliant
Table 1. Gain Settings
GAIN0 (J1)
GAIN1 (J2)
Amplifier Gain (dB)
ON
ON
20
ON
OFF
26
OFF
ON
32
OFF
OFF
36
SLOU229 – June 2008 – Revised November 2008
TPA3124D2 Audio Power Amplifier Evaluation Module
3