TS4601| Datasheet

TS4601, TS4601EIJT

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TS4601
High performance stereo headphone amplifier with capacitorless outputs and I2C bus interface
Features

Power supply range: 2.9 V to 5.5 V 107 dB of PSRR at 217 Hz Fully differential inputs I C interface for volume control Digital volume control range from -60 dB to +4 dB 101 dB of SNR A-weighted Independent right and left channel shutdown control

TS4601EIJT - Flip-chip

Pinout (top view)
SDZ SDA SCL VOUTR

Low quiescent current: 4.8 mA typ. at 3.0 V Low standby current: 2 uA max
INR-

Output-coupling capacitors removed Flip-chip package 2.1 mm x 2.1 mm, 500 um pitch, 16 bumps
INL-

INR+

CMS

VCC

INL+

PVSS

VOUTL

Applications

PVCC

GND

Cellular phones Notebook computers CD/MP3 players

Balls are underneath

Description
The TS4601 is a stereo headphone driver dedicated to high audio performance and spaceconstrained applications. It is based on low power dissipation amplifier core technology. Special care was taken in the design of the amplification chain to achieve peerless PSRR (107 dB typ. at 217 Hz) and 101 dB of SNR. The TS4601 can drive 0.9 Vrms output voltage into 16 and 1.6 Vrms into 10 k, whatever the power supply voltage, in the 2.9 V to 5.5 V range.

An I C interface offers volume control in 64 steps from -60 dB to +4 dB and multiple configuration modes for the device. The traditionally used output-coupling capacitors can be removed and a dedicated common-mode sense pin removes parasitic noise from the jack. The TS4601 is designed to be used with an output serial resistor. It ensures unconditional stability over a wide range of capacitive loads. The TS4601 is packaged in a tiny 16-bump flipchip with a pitch of 500 um and a 300 um diameter ball size.

February 2008

Rev 2

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