TS421

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360mW mono audio amplifier with active low standby mode

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Product overview

Description

The TS419/TS421 is a monaural audio power amplifier driving in BTL mode a 16 or 32 earpiece or receiver speaker. The main advantage of this configuration is to get rid of bulky ouput capacitors.

Capable of descending to low voltages, it delivers up to 220mW per channel (into 16 loads) of continuous average power with 0.2% THD+N in the audio bandwidth from a 5V power supply.

An externally controlled standby mode reduces the supply current to 10nA (typ.). The TS419/TS421 can be configured by external gain-setting resistors or used in a fixed gain version.

  • All features

    • SHORT CIRCUIT LIMITATION
    • PSRR: 56dB typ. at 1kHz, 46dB at 217Hz
    • Available in SO8, MiniSO8 & DFN 3x3
    • OPERATING FROM Vcc=2V to 5.5V
    • OUTPUT POWER into 16: 367mW @ 5V with 10% THD+N max or 295mW @5V and 110mW @3.3V with 1% THD+N max.
    • STANDBY MODE ACTIVE HIGH (TS419) or LOW (TS421)
    • High Signal-to-Noise ratio: 95dB(A) at 5V
    • ON/OFF click reduction circuitry
    • LOW CURRENT CONSUMPTION: 2.5mA max

EDA Symbols, Footprints and 3D Models

STMicroelectronics - TS421

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TS421IQT
Active
QFN-8L P 0.5 mm Industrial Ecopack3

TS421IQT

Package:

QFN-8L P 0.5 mm

Material Declaration**:

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Marketing Status

Active

Package

QFN-8L P 0.5 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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