The TS4621ML is a high-performance class-G stereo headphone amplifier. It features a wide power supply range, low quiescent current, and an integrated high-efficiency converter. It is suitable for mobile devices such as cellular phones and PMP/MP3 players.
The TS4621ML is a class-G stereo headphone driver designed for high-performance audio and high-power efficiency in space-constrained applications such as cellular phones, smartphones, and MP3 players. It combines low power dissipation amplifier technology with a highly efficient step-down DC/DC converter to supply the headsets directly from the battery voltage.
Key features include an integrated high-efficiency step-down converter that removes the need for output-coupling capacitors, achieving zero "pop and click" during startup. The device operates with a power supply range of 2.3 V to 4.8 V and offers gain settings of 0 dB and 6 dB. It is packaged in a tiny 16-bump flip-chip package with a pitch of 400 µm.
| Power supply range | 2.3 V to 4.8 V |
|---|---|
| Quiescent current | 0.6 mA/channel |
| Total current consumption (100 µW output) | 2.1 mA |
| THD+N typical | 0.006% at 1 KHz |
| PSRR typical | 100 dB at 217 Hz |
| SNR A-weighted | 100 dB (G = 0 dB) |
| Gain settings | 0 dB and 6 dB |
| Package type | 16-bump flip-chip, 400 µm pitch |
The device operates with a supply voltage ranging from 2.3 V to 4.8 V.
No, the device is designed to have output-coupling capacitors removed.
The TS4621ML offers gain settings of 0 dB and 6 dB.