TPA321DR The Texas Instruments TPA321DR is a 350mW mono audio power amplifier designed for low-voltage applications. It operates from a 2.5V to 5.5V supply and features differential inputs.
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TPA321DR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TPA321DR is a 350mW mono audio power amplifier designed for low-voltage applications. It operates from a 2.5V to 5.5V supply and features differential inputs.
✓ Total Stock: 3,500 pcs

TPA321DR Available from 1 distributor

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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3,500 pcs
3500 pcs On Request 1 On Request On Request 1244+ On Request On Request

TPA321DR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Tape & Reel

TPA321DR Description

Short technical summary and product information.

The TPA321DR from Texas Instruments is a mono audio power amplifier optimized for low-voltage applications requiring internal speakers. It supports a wide power supply range from 2.5V to 5.5V.

 

This amplifier can deliver up to 350mW of continuous power into an 8-ohm load at 5V supply, with less than 1% THD+N in the voice band. When operating at 3.3V, it provides 250mW into an 8-ohm load. The device also features an ultralow supply current of 0.15 µA in shutdown mode, making it suitable for power-sensitive battery-powered equipment.

 

The TPA321DR is available in an 8-pin SOIC package and a surface-mount MSOP package, which offers reduced board space and height. Its bridge-tied load (BTL) configuration eliminates the need for external output coupling capacitors in most applications.

 

Key features include thermal and short-circuit protection, ensuring device reliability. The amplifier is characterized up to 20 kHz but optimized for narrower band applications like cellular communications.

TPA321DR Quick Information

Product Type: Audio Power Amplifier
Series: TPA321
Canonical Name: TPA321 350mW Mono Audio Power Amplifier with Differential Inputs
Subcategory: Audio Special Purpose

TPA321DR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TPA321DR Features

  • 350mW output power into 8-ohm load at 5V.
  • Wide 2.5V to 5.5V supply voltage compatibility.
  • Ultralow shutdown current of 0.15 µA.
  • Differential inputs simplify signal routing.
  • Available in SOIC and MSOP surface-mount packages.

TPA321DR Applications

  • Ideal for portable audio devices.
  • Suitable for internal speaker amplification.
  • Used in cellular communication systems.
  • Power-sensitive battery-operated equipment.

TPA321DR FAQs

5 frequently asked questions generated from this part’s specifications.
What is the output power of the TPA321DR at 5V?

The TPA321DR can deliver 350 mW of continuous power into a BTL 8-ohm load at 5V.

What is the operating voltage range for the TPA321DR?

The TPA321DR operates with a power supply compatibility from 2.5 V to 5.5 V.

What is the supply current in shutdown mode for the TPA321DR?

The TPA321DR has an ultralow supply current of 0.15 µA in shutdown mode.

What package options are available for the TPA321DR?

The TPA321DR is available in an 8-pin SOIC surface-mount package and a surface-mount MSOP package.

What is the operating temperature range of the TPA321DR?

The TPA321DR operates within a temperature range of -40 °C to 85 °C.

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