TS4621ML datasheet(1/40 Pages) STMICROELECTRONICS

部件名	TS4621ML

功能描述	High-performance class-G stereo headphone amplifier

PDF	40 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 40 page

This is information on a product in full production.

May 2012

Doc ID 023181 Rev 1

1/40

40

TS4621ML

High-performance class-G stereo headphone amplifier

Datasheet

− production data

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

■ 100 dB of SNR A-weighted at G = 0 dB

■ Zero "pop and click"

■ Gain settings : 0 dB and 6 dB

■ Integrated high efficiency step-down converter

■ Low 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

Applications

■ Cellular phones, smartphones

■ Mobile internet devices

■ PMP/MP3 players

■ Portable CD/DVD players

Description

The TS4621ML is a class-G stereo headphone

driver dedicated to high-performance audio, 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 TS4621ML is designed to be used with an

output serial resistor. It ensures unconditional

stability over a wide range of capacitive loads.

The TS4621ML is packaged in a tiny 16-bump

flip-chip package with a pitch of 400 µm.

TS4621MLEIJT - flip-chip

Balls are underneath

Pinout (top view)

TOP VIEW

AVDD

SW

INL-

C1

CMS

EN

AGND

C2

HPVDD

VOUTL

VOUTR

INL+

INR+

PVSS

GAIN

INR-

432

1

A

B

C

D

www.st.com

类似零件编号 - TS4621ML

制造商	部件名	数据表	功能描述
STMicroelectronics	TS4621B	2Mb / 48P	High-performance class-G stereo headphone amplifier with I2C volume control September 2011 Rev 2
	TS4621BEIJT	2Mb / 48P	High-performance class-G stereo headphone amplifier with I2C volume control September 2011 Rev 2
	TS4621E	1Mb / 32P	High-performance class-G stereo headphone amplifier with I2C volume control September 2011 Rev 1
	TS4621EIJT	1Mb / 32P	High-performance class-G stereo headphone amplifier with I2C volume control September 2011 Rev 1

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