AD1974

PRODUCTION

4 ADC with PLL, 192 kHz, 24-Bit ADC

Analog Devices AD1974 Product Info

10 February 2026 4

Features

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

Supports 24 bits and 8 kHz to 192 kHz sample rates
Differential ADC input
SPI^®-controllable for flexibility
Software-controllable clickless mute
Software power-down
See data sheet for additional features

Part details & applications

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

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