The A22H165M is a class-G stereo headphone driver dedicated to high audio performance, high power efficiency and space-constrained applications such as wearable and fitness.
It is based on the core technology of a low power dissipation amplifier combined with a high efficiency buck converter for supplying this amplifier.
When powered by a battery, the buck 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 A22H165M is designed to be used with an output serial resistor. It ensures unconditional stability over a wide range of capacitive loads. The A22H165M is packaged in a tiny 16-bump flip-chip package with a pitch of 400 μm.
Key Features
| Description | Version | Size |
|---|---|---|
| DS10231: High-performance class-G stereo headphone amplifier with I²C volume control | 1.0 | 1 MB |
| Description | Version | Size |
|---|---|---|
| Brochure Wearables | 0815 | 6 MB |
| ST’s solutions for mobile devices | 3.2 | 3 MB |
| Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|---|---|
| A22H165MJ | Chip Scale Package 0.4mm pitch | Tape And Reel | -40 | 85 | 0.5 | 1000 | NEC | EAR99 | CHINA |
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| A22H165MJ | Chip Scale Package 0.4mm pitch | Industrial | Ecopack3 | md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_akn54621bjj-wspc-(ts4621eijt).pdf md_n5-wspc-csps0.4-wspc-bp-wspc-5-16_akn54621bjj-wspc-(ts4621eijt).xml |
