Overview
The AD7796BRUZ is a low-power, 16-bit sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is specifically designed for use with bridge sensors and offers high precision and low noise performance. It features an internal instrumentation amplifier with a fixed gain of 128, allowing it to directly interface with small amplitude signals from bridge sensors. The AD7796BRUZ also includes an internal temperature sensor, which can be used for temperature compensation of the bridge sensor.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 16 Bits | - | - |
| Output Update Rate | 4.17 to 123 Hz | - | Software-programmable |
| RMS Noise | 65 nV | - | - |
| Integral Nonlinearity | ±10 ppm of FSR | - | Typical |
| Offset Error | ±1 µV | - | Typical |
| Full-Scale Error | ±10 µV | - | Typical |
| Gain Drift vs. Temperature | ±3 ppm/°C | - | Typical |
| Power Supply Range | 2.7 V to 5.25 V | - | - |
| Current Consumption | 250 µA | - | Typical |
| Power-Down Current | 1 µA | - | - |
| Operating Temperature Range | –40°C to +85°C | - | - |
| Package Type | 16-Lead TSSOP | - | - |
Key Features
- Internal Instrumentation Amplifier: Fixed gain of 128, suitable for small amplitude signals from bridge sensors.
- Internal Temperature Sensor: For temperature compensation of the bridge sensor.
- Low Power Consumption: Typical current consumption of 250 µA and power-down current of 1 µA.
- High Precision: Low noise performance with RMS noise of 65 nV.
- Software-Programmable Output Rate: Update rate range from 4.17 Hz to 123 Hz.
- Simultaneous 50 Hz/60 Hz Rejection: Effective noise rejection for various power line frequencies.
- Internal Clock Oscillator: Can be operated with internal or external clock.
Applications
- Bridge Sensors: Ideal for interfacing with bridge sensors in various measurement applications.
- Industrial Automation: Used in industrial automation systems for precise measurement and control.
- Medical Devices: Suitable for medical devices requiring high precision and low noise ADCs.
- Aerospace and Defense: Applied in aerospace and defense systems where high reliability and precision are critical.
- Test and Measurement Equipment: Used in various test and measurement instruments for accurate data acquisition.
Q & A
- What is the resolution of the AD7796BRUZ ADC?
The AD7796BRUZ has a resolution of 16 bits.
- What is the typical current consumption of the AD7796BRUZ?
The typical current consumption is 250 µA.
- What is the power-down current of the AD7796BRUZ?
The power-down current is 1 µA.
- What is the operating temperature range of the AD7796BRUZ?
The operating temperature range is –40°C to +85°C.
- Does the AD7796BRUZ have an internal temperature sensor?
- What is the gain of the internal instrumentation amplifier in the AD7796BRUZ?
The internal instrumentation amplifier has a fixed gain of 128.
- Can the output update rate of the AD7796BRUZ be software-programmed?
- What is the RMS noise of the AD7796BRUZ?
The RMS noise is 65 nV.
- Does the AD7796BRUZ support simultaneous 50 Hz/60 Hz rejection?
- What is the package type of the AD7796BRUZ?
The package type is a 16-Lead TSSOP.
