LMV1026 - National Semiconductor

LMV1026 (LMV1024 / LMV1026) PDM Output

National’s LMV1024 and LMV1026 stereo amplifiers are solutions for the new generation of voice enrichment capabilities. National has integrated sigma delta modulation and analog cores to improve the voice quality and the performance and to support designer’s choices. Each 20 kHz preamplifier drives a Pulse Density Modulated (PDM) signal at an over sampled 60.

Features

(Typical VDD = 1.8V, CLOCK = 1.2 MHz, fINPUT = 1 kHz, VINPUT = 18 mVPP, unless otherwise specified) n Enhanced high-performance, full PDM output from the element n Stereo chipset and array routing n SNR A-weighted 59 dB n Digital A-weighted noise floor −89 dBFS n Supply current 518 µA n Clock frequency 400 kHz to 2.4 MHz n Total harmonic distortion 0.03% n Power supply rejection ratio 100 dB n Adhesion technology > 1 kg n Highly integrated stereo or mono signaling n Maximized system performance n Reduced components and layout n RF (buzz noise) managed with 4 wire signaling n Thinnest 0.35 mm m.