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.
|Title||Content Type||File Type|
|AD1974: 4 ADC with PLL, 192 kHz, 24-Bit ADC Data Sheet (Rev D, 03/2013) (pdf, 1135 kB)||Data Sheets|
|AN-1006: Using the EVAL-ADUSB2EBZ (pdf, 349 kB)||Application Notes|
|UG-046: Evaluating the AD1974 Four ADC with PLL 192 kHz, 24-Bit Codec (pdf, 3360 kB)||User Guides|
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Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
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