The TS4601B is a high performance stereo headphone amplifier with capacitorless outputs and I2C bus interface.
The TS4601B is a high‑performance stereo headphone amplifier designed for space‑constrained applications such as cellular phones, notebook computers, and CD/MP3 players. It offers capacitor‑less outputs, a wide power‑supply range, and an I²C bus interface for digital volume control.
The document provides absolute maximum ratings, detailed electrical characteristics, pin descriptions, typical application schematics, component recommendations, and ordering information, making it a comprehensive reference for designers and technicians.
| Power supply range | 2.9 V to 5.5 V |
|---|---|
| Power supply rejection ratio (PSRR) | 107 dB at 217 Hz |
| Signal‑to‑noise ratio (SNR) | 101 dB A‑weighted |
| Quiescent supply current (typical) | 4.8 mA at 3.0 V |
| Standby current (max) | 2 µA |
| Output voltage into 16 Ω | 0.9 V rms |
| Output voltage into 10 kΩ | 1.6 V rms |
| Digital volume control range | -60 dB to +4 dB |
| I²C clock frequency | 400 kHz |
The TS4601B operates from 2.9 V up to 5.5 V.
The typical quiescent supply current is 4.8 mA at a 3.0 V supply.
The I²C (I?C) clock runs at 400 kHz.
The volume can be adjusted in 64 steps from –60 dB to +4 dB.