Microphone preamp in a 1.2 mm² footprint
The LMV1032UR-15/NOPB is a Class AB amplifier designed specifically for 3-wire electret condenser microphone (ECM) interfaces. Its 1.7V to 5V supply range lets it run from a single Li-ion cell or a 3.3V regulator rail without a separate bias supply. The 4-DSBGA package (0.5 mm pitch, 0.8 mm × 0.8 mm body) places the amplifier directly under the microphone capsule in a compact handset or headset assembly. The mono output drives the downstream codec or DSP input directly.
Supply and temperature envelope
Operating temperature spans -40°C to +85°C (TA), covering industrial and consumer environments. The wide supply tolerance means the amplifier maintains gain and noise performance even as a battery discharges from 5V down to 1.7V. The DSBGA package requires careful PCB layout: the 0.5 mm pitch demands a solder mask defined pad with a 0.25 mm aperture and a 0.3 mm solder paste stencil. A 4-layer board with a solid ground plane under the package is recommended for thermal and electrical stability.
Sourcing and lifecycle status
It is sourced through authorized distribution channels; availability and current pricing are confirmed at RFQ against the BOM quantity. No official pin-compatible second source or successor is listed. The part is sole-sourced to TI; for a BOM hedge, confirm the supply lead time at quote time.