Overview
The AD7797BRUZ-REEL, produced by Analog Devices Inc., is a low-power, 24-bit Sigma-Delta Analog-to-Digital Converter (ADC) designed for high precision bridge sensor applications. This component is part of the AD7796/AD7797 family, which serves as a complete analog front end for various sensing tasks. The AD7797 is housed in a 16-lead TSSOP package and operates with a power supply range of 2.7 V to 5.25 V, making it suitable for a wide range of industrial and medical applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 Bits | |
| Sampling Rate | 4.17 Hz to 123 Hz | |
| Polarity | Bipolar | |
| Interface | SPI | |
| Min Supply Voltage | 2.7 V | V |
| Max Supply Voltage | 5.25 V | V |
| Current Consumption | 250 µA (typical) | µA |
| Package | 16-Lead TSSOP | |
| Operating Temperature Range | -40°C to +85°C | °C |
| RMS Noise | 65 nV | nV |
| Integral Nonlinearity | ±10 ppm of FSR (typical) | |
| Offset Error | ±1 µV (typical) | µV |
Key Features
- On-chip Instrumentation Amplifier: With a fixed gain of 128, allowing direct interface with bridge sensors.
- Temperature Sensor: Internally connected to the ADC for temperature compensation of the bridge.
- Software-Programmable Output Data Rate: Ranges from 4.17 Hz to 123 Hz.
- Internal or External Clock Operation: Flexible clocking options.
- Low Power Consumption: Typical current consumption of 250 µA.
- High Precision: 24-bit Sigma-Delta ADC with low RMS noise and high accuracy.
- Simultaneous 50 Hz/60 Hz Rejection: Effective noise rejection for various power line frequencies.
Applications
- Weigh Scales: High precision measurements for industrial and commercial weighing applications.
- Bridge Sensors: Suitable for strain gauges, pressure sensors, and other bridge-type sensors.
- Medical Devices: For precise measurements in medical equipment such as patient monitoring systems.
- Industrial Automation: For precise control and measurement in industrial automation systems.
Q & A
- What is the resolution of the AD7797BRUZ-REEL? The AD7797BRUZ-REEL has a resolution of 24 bits.
- What is the sampling rate range of the AD7797BRUZ-REEL? The sampling rate ranges from 4.17 Hz to 123 Hz.
- What type of interface does the AD7797BRUZ-REEL use? The AD7797BRUZ-REEL uses an SPI interface.
- What is the power supply voltage range for the AD7797BRUZ-REEL? The power supply voltage range is from 2.7 V to 5.25 V.
- How much current does the AD7797BRUZ-REEL typically consume? The AD7797BRUZ-REEL typically consumes 250 µA.
- What is the package type of the AD7797BRUZ-REEL? The AD7797BRUZ-REEL is housed in a 16-lead TSSOP package.
- Does the AD7797BRUZ-REEL have an internal temperature sensor? Yes, the AD7797BRUZ-REEL has an internal temperature sensor connected to the ADC.
- Can the AD7797BRUZ-REEL operate with an external clock? Yes, the AD7797BRUZ-REEL can operate with either an internal or an external clock.
- What is the RMS noise level of the AD7797BRUZ-REEL? The RMS noise level is 65 nV.
- What are some common applications of the AD7797BRUZ-REEL? Common applications include weigh scales, bridge sensors, medical devices, and industrial automation systems.
