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Class G capless headphone amplifier based on TS4621E
  • active Active

The STEVAL-CCA025V1 demonstration board is designed to aid in the evaluation of the TS4621E audio differential input stereo headphone amplifier. The TS4621E device is soldered on a four-layer PCB. An on-board RS-232 to I2C interface renders the board easy to control from a personal computer through a serial port.

The software provided with the board controls all features of the TS4621E, such as gain, mode, mute, standby and register status.

You can also use the connectors on the demonstration board to directly control the features through another I2C interface.

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Data Brief

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
  • Zero pop and click
  • I2C interface for volume control
  • Digital volume control range: -60 dB to +4 dB
  • 100 dB of SNR A-weighted at G = 0 dB
  • Independent right and left channel enable control
  • Integrated high-efficiency buck converter
  • Low standby current: 5 μA max
  • No output coupling capacitors (thanks to the internal negative supply)
  • Thermal shutdown and short-circuit protection
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1035: Class G capless headphone amplifier demonstration board based on the TS4621E
2.1 86 KB

Application Notes

Description Version Size
AN3145: STEVAL-CCA025V1 demonstration board user guidelines for the TS4621 high-performance stereo headphone amplifier
1.2 1,019 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-CCA025V1 gerber files
1.0 323 KB

Bill of Materials

Description Version Size
2.1 8 KB

Schematic Pack

Description Version Size
Board schematics
1.0 38 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-CCA025V1ActiveTS4621E-62Distributor reported inventory date: 2016-02-13
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA10

(*) 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
(**) The Material Declaration forms available on 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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