Overview
The AD7724ASTZ-REEL, produced by Analog Devices Inc., is a dual 7th-order sigma-delta modulator. It is essentially a dual version of the AD7720, designed to offer high performance in signal conversion. This component is known for its low noise performance and high signal-to-noise ratio (SNR), making it suitable for various precision measurement applications.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Master Clock Frequency | 100 kHz min, 15 MHz max | Hz | For specified performance |
| Input Sampling Rate | Up to 2 fMCLK MHz | MHz | |
| Differential Input Impedance | 109/(8 fMCLK) kΩ typ | kΩ | |
| Signal Input Span (Bipolar Mode) | ±VREF2/2 V max | V | BIP = VIH |
| Signal Input Span (Unipolar Mode) | 0 to VREF2 V max | V | BIP = VIL |
| Reference Output Voltage (REF1 and REF2) | 2.32 to 2.68 V min/max | V | |
| Reference Output Voltage Drift | 60 ppm/°C typ | ppm/°C | |
| Package Type | 48-LQFP |
Key Features
- High SNR Performance: Achieves an SNR of 90 dB over a 90 kHz bandwidth, making it ideal for precision measurement applications.
- Dual Sigma-Delta Modulators: The AD7724 features two 7th-order sigma-delta modulators, providing dual-channel conversion capabilities.
- Low Noise Performance: The component is designed to provide low noise performance, especially when used with an input circuit that minimizes differential mode noise.
- Reference Outputs: Includes internal reference outputs (REF1 and REF2) with low drift and high stability.
- ESD Protection: Features proprietary ESD protection circuitry to protect against electrostatic discharges.
Applications
The AD7724ASTZ-REEL is suitable for a variety of applications that require high precision and low noise in signal conversion. These include:
- Industrial Automation: For precise measurement and control in industrial automation systems.
- Medical Devices: In medical equipment where high accuracy and low noise are critical.
- Aerospace and Defense: For applications requiring robust and precise signal conversion.
- Test and Measurement Equipment: In instruments that demand high SNR and low noise performance.
Q & A
- What is the AD7724ASTZ-REEL?
The AD7724ASTZ-REEL is a dual 7th-order sigma-delta modulator produced by Analog Devices Inc. - What is the maximum master clock frequency for the AD7724?
The maximum master clock frequency is 15 MHz for specified performance. - What is the typical differential input impedance of the AD7724?
The typical differential input impedance is 109/(8 fMCLK) kΩ. - What is the signal input span in bipolar mode?
The signal input span in bipolar mode is ±VREF2/2 V max. - What is the reference output voltage range for REF1 and REF2?
The reference output voltage range for REF1 and REF2 is 2.32 to 2.68 V min/max. - Does the AD7724 have ESD protection?
Yes, the AD7724 features proprietary ESD protection circuitry. - What is the package type of the AD7724ASTZ-REEL?
The package type is 48-LQFP. - What is the SNR performance of the AD7724 over a 90 kHz bandwidth?
The SNR performance is 90 dB over a 90 kHz bandwidth. - What kind of applications is the AD7724 suitable for?
The AD7724 is suitable for industrial automation, medical devices, aerospace and defense, and test and measurement equipment. - How can I protect the AD7724 from electrostatic discharges?
Proper ESD precautions are recommended to avoid performance degradation or loss of functionality).
