The TPA0103 Audio Power Amplifier Evaluation Module
3.2 The TPA0103 Audio Power Amplifier Evaluation Module
The TPA0103 Audio Power Amplifier Evaluation Module is powered by a TPA0103 3-channel audio power amplifier capable of delivering 535 mW of continuous power to each of the left and right single-ended 4-Ωspeaker loads, and 1.75 W of continuous power (BTL) to a center channel 4-Ωload. The amplifier IC can be configured for center channel only, center or L/R channels, or three channel operation via two mode terminals. The evaluation module includes jumpers for setting modes and control inputs for shutdown, selection between two sets of stereo inputs, and switching between output modes.
The module can be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform (Figure 3±1) or wired directly into circuits or equipment. The module has single in-line header connector pins mounted to the under side of the board. These pins allow the module to be plugged into the TI platform, which automatically makes all the signal input and output, power, and control connections to the module.
The module connection pins are on 0.1-inch centers to allow easy use with standard perf board and plug board-based prototyping systems. Or, the EVM can be wired directly into existing circuits and equipment when used stand- alone.
The module appears in Figure 3±2 and its schematic is shown in Figure 3±3.
Figure 3±2. TPA0103 EVM
RHP | C7 | R10 |
| |
GND | C6 | R8 |
RIN | |
| |
GND | | |
R15 | | |
| C8 | |
R18 | |
R16 | | |
GND | C3 | |
| |
LIN | C1 | |
GND | R1 | |
| |
LHP | C2 | R3 |
| VDD | | GND | R11 ROUT+ |
| + | | | | GND |
R7 | C11 | | | S5 |
R14 | | S3 | COUT± |
| | HP/L* |
R9 | | | S4 | |
| | C9 C10 | | MODE A |
| | | |
R17 | | | | R12 |
| | | | MODE B |
U1 | | | | |
| | TPA0103 | EVM |
R4 | | |
| | | REV. A |
| C12 | | Lit.# SLOP103 |
R13 | C5 | S2 | | SDWN |
| | | | |
R2 | ±3 | S1 | R6 | | COUT+ |
| |
| | GND |
| | R5 | | |
| | | | LOUT+ |
| 009228 | | | |
| | | | |