STMicroelectronics A22H165
The A22H165 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.| Part No. | A22H165 |
|---|---|
| Datasheet | A22H165 Download |
| Manufacturer |  STMicroelectronics |
| Description | High-performance class-G stereo headphone amplifier |
| Buy | Stock & Price |
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 Datasheet - production data
APPLICATIONS
● Cellular / smart phones● Portable media player
● Wearable
● Fitness and healthcare
DESCRIPTION
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.
