Overview
The TPA711DGNR is a 700-mW mono low-voltage audio power amplifier developed by Texas Instruments. This device is specifically designed for low-voltage applications, making it suitable for internal speakers and external earphone operation. It operates efficiently with supply voltages ranging from 2.5 V to 5.5 V, making it ideal for battery-powered equipment. The TPA711DGNR can deliver up to 700 mW of continuous power into an 8-Ω load in bridge-tied load (BTL) mode and up to 85 mW in single-ended (SE) mode. It features integrated depop circuitry, thermal and short-circuit protection, and a shutdown mode for power-sensitive applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 2.5 - 5.5 | V |
| Output Power (BTL, VDD = 5 V, RL = 8 Ω) | 700 | mW |
| Output Power (SE, VDD = 5 V, RL = 32 Ω) | 85 | mW |
| Output Power (BTL, VDD = 3.3 V, RL = 8 Ω) | 250 | mW |
| Output Power (SE, VDD = 3.3 V, RL = 32 Ω) | 37 | mW |
| Shutdown Current (IDD) | 7 µA (at 3.3 V), 50 µA (at 5 V) | µA |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Types | SOIC, PowerPAD MSOP |
Key Features
- BTL and SE Modes: The TPA711DGNR can operate in both bridge-tied load (BTL) and single-ended (SE) modes, allowing it to switch between internal speaker and external earphone operation without mechanical switching.
- Integrated Depop Circuitry: Eliminates speaker noise when exiting shutdown mode.
- Thermal and Short-Circuit Protection: Ensures device reliability and safety.
- Shutdown Mode: Reduces power consumption to 7 µA at 3.3 V and 50 µA at 5 V.
- Compact Packaging: Available in 8-pin SOIC and surface-mount PowerPAD MSOP packages, reducing board space and height.
- Wide Power Supply Compatibility: Operates with supply voltages from 2.5 V to 5.5 V.
Applications
- Wireless Communications: Optimized for narrower band applications such as wireless communications.
- Battery-Powered Equipment: Suitable for small battery-powered devices due to its low-voltage operation and power efficiency.
- Portable Audio Devices: Ideal for portable audio devices requiring both internal speaker and external earphone operation.
- Consumer Electronics: Used in various consumer electronics where low power consumption and compact design are essential.
Q & A
- What is the maximum output power of the TPA711DGNR in BTL mode at 5 V?
The maximum output power in BTL mode at 5 V is 700 mW into an 8-Ω load.
- What is the shutdown current of the TPA711DGNR at 3.3 V?
The shutdown current at 3.3 V is 7 µA.
- What are the available package types for the TPA711DGNR?
The TPA711DGNR is available in 8-pin SOIC and surface-mount PowerPAD MSOP packages.
- What is the operating temperature range of the TPA711DGNR?
The operating temperature range is -40°C to 85°C.
- Does the TPA711DGNR have integrated protection features?
Yes, it includes thermal and short-circuit protection.
- How does the TPA711DGNR switch between BTL and SE modes?
The mode is controlled by the SE/BTL pin; holding it low sets the device to BTL mode, and holding it high sets it to SE mode.
- What is the purpose of the depop circuitry in the TPA711DGNR?
The depop circuitry eliminates speaker noise when exiting shutdown mode.
- Can the TPA711DGNR operate with different supply voltages?
Yes, it operates with supply voltages ranging from 2.5 V to 5.5 V.
- What are some common applications of the TPA711DGNR?
Common applications include wireless communications, battery-powered equipment, portable audio devices, and consumer electronics.
- How does the PowerPAD MSOP package benefit the design?
The PowerPAD MSOP package reduces board space by 50% and height by 40% compared to traditional packages.
