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TS4621ML Datasheet(PDF) 1 Page - STMicroelectronics |
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TS4621ML Datasheet(HTML) 1 Page - STMicroelectronics |
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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 |
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