High-performance class-G stereo headphone amplifier

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  • The TS4621ML is a class-G stereo headphone driver dedicated to high-performance audio, high-power efficiency and space-constrained applications.

    It is based on the core technology of a low power dissipation amplifier combined with a high-efficiency step-down DC/DC converter for supplying this amplifier.
    When powered by a battery, the internal step-down DC/DC converter generates the appropriate voltage to the amplifier depending on the amplitude of the audio signal to supply the headsets. It achieves a total 2.1 mA current consumption at 100 μW output power (10 dB crest factor).
    THD+N is 0.02 % maximum at 1 kHz and PSRR is 100 dB at 217 Hz, which ensures a high audio quality of the device in a wide range of environments.
    The traditionally bulky output coupling capacitors can be removed.
    A dedicated common-mode sense pin removes parasitic ground noise.
    The TS4621ML is designed to be used with an output serial resistor. It ensures unconditional stability over a wide range of capacitive loads.
    The TS4621ML is packaged in a tiny 16-bump flip-chip package with a pitch of 400 μm.

    Key Features

    • Power supply range: 2.3 V to 4.8 V
    • 0.6 mA/channel quiescent current
    • 2.1 mA current consumption with 100 μW/channel (10 dB crest factor)
    • 0.006% typical THD+N at 1 kHz
    • 100 dB typical PSRR at 217 Hz
    • 100 dB of SNR A-weighted at G = 0 dB
    • Zero "pop and click"
    • Gain settings : 0 dB and 6 dB
    • Integrated high efficiency step-down converter
    • Low standby current: 5 μA max
    • Output-coupling capacitors removed
    • Thermal shutdown
    • Flip-chip package: 1.65 mm x 1.65 mm, 400 μm pitch, 16 bumps

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Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
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min
max
TS4621MLEIJT Chip Scale Package 0.4mm pitch Tape And Reel -40 85
Active
0.497 1000 EAR99
MORE INFO

Country of Origin:

CHINA

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Distributor availability ofTS4621MLEIJT

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2019-06-25

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-06-25

Get sample

TS4621MLEIJT

Package

Chip Scale Package 0.4mm pitch

Packing Type

Tape And Reel

Unit Price (US$)

0.497*

Distributor availability ofTS4621MLEIJT

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2019-06-25

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-06-25

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.497

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DS9034
      High-performance class-G stereo headphone amplifier
      1.0
      2.46 MB
      PDF
      DS9034

      High-performance class-G stereo headphone amplifier

Publications and Collaterals

    • Description Version Size Action
      ST’s solutions for mobile devices 3.3
      2.13 MB
      PDF

      ST’s solutions for mobile devices

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TS4621MLEIJT
Active
Chip Scale Package 0.4mm pitch Industrial Ecopack3

TS4621MLEIJT

Package:

Chip Scale Package 0.4mm pitch

Material Declaration**:

PDF XML

Marketing Status

Active

Package

Chip Scale Package 0.4mm pitch

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.