Overview
The AD7720BRU-REEL, produced by Analog Devices Inc., is a 16-bit sigma-delta modulator integrated circuit. This device is designed to convert analog input signals into a high-speed 1-bit data stream, making it suitable for various precision measurement and data acquisition applications. The AD7720 operates from a +5 V supply and features a 7th order sigma-delta modulator architecture, ensuring high accuracy and stability in its output.
Key Specifications
| Parameter | Value | Units | Test Conditions |
|---|---|---|---|
| Resolution | 16 Bits | - | Differential Nonlinearity |
| Differential Nonlinearity | ±1 LSB max | - | Guaranteed Monotonic |
| Integral Nonlinearity | ±2 LSB typ | - | - |
| Precalibration Offset Error | ±6 mV typ | - | - |
| Precalibration Gain Error | ±0.6 % FSR typ | - | - |
| Postcalibration Offset Error | ±1.5 mV typ | - | - |
| Postcalibration Gain Error | ±0.3 % FSR typ | - | - |
| Supply Voltage (AVDD, DVDD) | 4.75/5.25 V min/max | V | - |
| Total Supply Current (Active Mode) | 43 mA max | mA | Digital Inputs Equal to 0 V or DVDD |
| Total Supply Current (Standby Mode) | 25 µA max | µA | - |
| Operating Temperature Range | -40°C to +85°C | °C | - |
| Package Type | 28-Lead TSSOP | - | - |
Key Features
- High Accuracy: The AD7720 features a 7th order sigma-delta modulator, providing high resolution and accuracy in converting analog signals to digital data.
- Calibration Capabilities: The device allows for precalibration and postcalibration of offset and gain errors, ensuring precise measurements.
- Low Power Consumption: It operates in both active and standby modes, with a maximum current consumption of 43 mA in active mode and 25 µA in standby mode.
- Flexible Input Modes: The AD7720 supports both unipolar and bipolar input modes, selected via the BIP pin.
- Digital Interface: The device uses a serial interface (SPI) for data output, facilitating easy integration into various systems.
- ESD Protection: The IC is ESD sensitive and requires careful handling to prevent damage.
Applications
- Precision Measurement Systems: Ideal for applications requiring high accuracy and stability, such as industrial control systems and scientific instruments.
- Data Acquisition Systems: Suitable for use in data acquisition systems where precise analog-to-digital conversion is necessary.
- Industrial Automation: Can be used in industrial automation for monitoring and controlling various parameters.
- Medical Devices: Applicable in medical devices that require precise measurement of analog signals.
Q & A
- What is the resolution of the AD7720BRU-REEL?
The AD7720BRU-REEL has a resolution of 16 bits.
- What is the operating supply voltage range for the AD7720BRU-REEL?
The operating supply voltage range is 4.75 V to 5.25 V for both AVDD and DVDD.
- What are the operating temperature ranges for the AD7720BRU-REEL?
The operating temperature range is from -40°C to +85°C.
- Does the AD7720BRU-REEL support calibration?
Yes, the device supports precalibration and postcalibration for offset and gain errors.
- What type of digital interface does the AD7720BRU-REEL use?
The device uses a serial interface (SPI) for data output.
- What are the power consumption modes of the AD7720BRU-REEL?
The device operates in both active and standby modes, with a maximum current consumption of 43 mA in active mode and 25 µA in standby mode.
- Is the AD7720BRU-REEL ESD sensitive?
Yes, the IC is ESD sensitive and requires careful handling to prevent damage.
- What package type is the AD7720BRU-REEL available in?
The device is available in a 28-Lead TSSOP package.
- Can the AD7720BRU-REEL operate in both unipolar and bipolar modes?
Yes, the device supports both unipolar and bipolar input modes, selected via the BIP pin.
- What is the typical application of the AD7720BRU-REEL?
The AD7720BRU-REEL is typically used in precision measurement systems, data acquisition systems, industrial automation, and medical devices.
