TS4621B High-performance class-G stereo headphone amplifier with I²C volume control

The TS4621B is a class-G stereo headphone driver dedicated to high audio performance, 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 TS4621B is designed to be used with an output serial resistor. It ensures unconditional stability over a wide range of capacitive loads.

The TS4621B is packaged in a tiny 16-bump flip-chip package with a pitch of 400 μm.

技术特性

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
I²C interface for volume control
Digital volume control range from -60 dB to +4 dB
Independent right and left channel shutdown control
Integrated high-efficiency step-down converter
Low software 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

TS4621B 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
TS4621BEIJT	Active		1000	CSPS0.4 BP 5-16	Tape And Reel	-40 °C-125 °C	TS4621BEIJT

DATASHEET

下载	描述	版本	大小
TS4621B	DS8641: High-performance class-G stereo headphone amplifier with I²C volume control	2	2045KB