Texas Instruments TPA6120A2RGY EVM, Руководство пользователя

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Introduction
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1 Introduction
The TPA6120A2RGY is a high-fidelity audio amplifier. The amplifier can operate from a split power supply,
and is designed for low noise, high dynamic range performance.
1.1 Related Documentation from Texas Instruments
TPA6120A2 data sheet (literature number SLOS431 )
1.2 Description
The TPA6120A2RGY EVM is designed to operate specifically with a split power supply and is configured
with differential inputs with a gain of 1 V/V. The output signal is routed into a 3.5-mm headphone jack J4.
The EVM is approximately 1.5 x 1.25 in.
1.3 Performance Specifications
Table 1. TPA6120A2RGY EVM Specifications
MIN MAX UNIT
V
CC
Supply voltage range ±5 ±15 V
Power supply current rating required 1 A
Continuous output power, Po: 32- Ω stereo, V
CC
= ±12 V 2 W
V
I
Audio input voltage –V
CC
V
CC
Z
(L)
Minimum load impedance 8 Ω
CAUTION
1. Accidental swapping of supply polarities causes damage to the device and
can cause damage to the other components on the board.
2. Do not short the outputs of the TPA6120A2RGY to either the positive or
negative supply when operating with a split power supply. When operating
with a single power supply, do not short the outputs to the positive supply.
This damages the device.
2 Getting Started
Follow these steps to use the TPA6120A2RGY EVM in its original configuration:
Power Supply
1. Make sure all external power supplies are turned off.
2. Connect an external power supply with the positive voltage set between 5 V and 15 V to the terminal
marked V+ (J1) on the EVM.
3. Connect the negative voltage to the terminal marked V– (J2), making sure the negative voltage is set
to the same magnitude as that of the positive (that is, ±5 V, ±12 V, ±15 V).
4. Connect the left signal sources to the screw terminal labeled LIN (J3), and the right signal source to
the screw terminal labeled RIN (J5).
NOTE: This EVM is configured for differential mode. To operate in single-ended mode, see Single-
Ended Inverting Configuration .
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2 TPA6120A2RGY Evaluation Module SLOU394 – July 2014
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