Active production, 16-DSBGA headphone amp with I²C volume
The LM48822TLX/NOPB: It delivers 40 mW per channel into a 32 Ω load, which is enough drive for most consumer and portable headphone applications without needing an external buffer. The supply voltage range of 2.4 V to 5.5 V lets it run directly from a single Li-ion cell or a 3.3 V / 5 V rail, and the industrial temperature grade (-40°C to 85°C) covers outdoor and automotive cabin environments.
I²C control and package rework considerations
Volume, mute, and shutdown are set over the I²C bus — the part includes depop circuitry to suppress clicks on power-up and mode transitions. The I²C interface is compatible with both 3.3 V and 1.8 V logic levels, so it integrates into mixed-voltage systems without a level shifter. Housed in a 16-bump DSBGA (0.5 mm pitch), the package is small but demands careful reflow profiling — the exposed solder balls are the only thermal path, so a pre-bake at 125°C for 8 hours is recommended before rework to avoid popcorning.
Sourcing and procurement posture
Texas Instruments lists the LM48822TLX/NOPB as an active product — no last-time-buy or NRND status has been issued.