LMV1024 Datasheet | Texas Instruments

FEATURES - 2 (Typical VDD = 1.8V, CLOCK = 1.2 MHz, f INPUT = 1 k Hz, VINPUT = 18 m VPP, unless otherwise specified) - Enhanced high-performance, full PDM output from the element - Stereo chipset and array routing - SNR A-weighted 59 d B - Digital A-weighted noise floor - 89 d BFS - Supply current 518 µA - Clock frequency 400 k Hz to 2.4 MHz - Total harmonic distortion 0.03% - Power supply rejection ratio 100 d B - Adhesion technology >1 kg - Highly integrated stereo or mono signaling - Maximized system performance - Reduced ponents and layout - RF (buzz noise) managed with 4 wire signaling - Thinnest 0.35 mm micro SMD packaging APPLICATIONS - Digital output audio subsystems and stereo arrays - Electret condenser microphones with all digital output - Portable munications and small form factor - Digital audio puting or voice security - Automotive or array systems - Headphone and Headset accessories DESCRIPTION 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 k Hz preamplifier drives a Pulse Density Modulated (PDM) signal at an over sampled 60 bit stream, offering versatility. These solutions provide immediate conversion to high performance audio spectrum, thus pleting a high quality audio system. The LMV1024 and LMV1026 operate from 1.6V to 3V. National’s new adjustable clock frequency technology is designed for stereo, performance and ease of use. The stereo function is either a rising or falling edge clock mand. The high drive, robust PDM signal directly from an ECM (Electret Condenser Microphone), upgrades existing lower quality, low-level signal constraints. These advanced mixed signal preamplifiers cleanly, accurately and creatively eliminate older, poorer quality systems, which restricted performance and versatility. The 4-wire PDM signaling...