AD1974 4 ADC with PLL, 192 kHz, 24-Bit ADC
Automotive audio systems
Home Theater Systems
Set-top boxes
Digital audio effects processors
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
Features and Benefits- 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
| IBIS ModelsSoftware & Systems Requirements |
Data Sheets
Application Notes
User Guides
Order Information
Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
---|
AD1974WBSTZ Production | 48 ld LQFP | OTH 250 | -40 to 105C | 4.43 | 4.01 | Y |
AD1974WBSTZ-RL Production | 48 ld LQFP | REEL 2000 | -40 to 105C | 0 | 4.01 | Y |
AD1974YSTZ Production | 48 ld LQFP | OTH 250 | -40 to 105C | 4.43 | 4.01 | Y |
AD1974YSTZ-RL Production | 48 ld LQFP | REEL 2000 | -40 to 105C | 0 | 4.01 | Y |
Evaluation Boards
Part Number | Description | Price | RoHS |
---|
EVAL-AD1974AZ | Evaluation Board | 499 | Y |
EVAL-ADUSB2EBZ | USB Interface | 80 | Y |
Reference Materials