The AD1974 is a high performance, single-chip ADC that provides four analog-to-digital converters (ADCs) with differential inputs using the Analog Devices, Inc. patented multibit sigma-delta (Σ-Δ) architecture. An SPI port is included, allowing a microcontroller to enable mutes and adjust many other parameters. The AD1974 operates from 3.3 V digital and analog supplies. The AD1974 is available in a single-ended output 48-lead LQFP. The AD1974 is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board phase-locked loop (PLL) to derive the master clock from the LR clock or from an external crystal, the AD1974 eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The ADCs are designed using the latest continuous time architectures from Analog Devices to further minimize EMI. By using 3.3 V supplies, power consumption is minimized, further reducing emissions. APPLICATIONS * Automotive audio systems * Home Theater Systems * Set-top boxes * Digital audio effects processors * Phase-locked loop generated or direct master clock * Low EMI design * 107 dB dynamic range and SNR * −94 dB THD + N * Single 3.3 V supply * Tolerance for 5 V logic inputs https://elecena.pl/product/509517/4-adc-with-pll-192-khz-24-bit-adc 2007-08-13 https://elecena.pl/product/509517/4-adc-with-pll-192-khz-24-bit-adc 2018-03-28 https://elecena.pl/product/509517/4-adc-with-pll-192-khz-24-bit-adc 2025-01-20