Overview
The AD7792BRU, produced by Analog Devices Inc., is a 3-channel, low noise, low power analog-to-digital converter (ADC) designed for the accurate and reliable conversion of analog signals. This device is part of the AD7792/AD7793 series, which incorporates a ∑-Δ modulator, a buffer, reference, in-amp, and an on-chip digital filter. It is particularly suited for measuring wide dynamic range, low frequency signals such as those in pressure transducers, weigh scales, and temperature measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 3 |
| Resolution | 16-bit (AD7792) |
| Supply Voltage (AVDD/DVDD) | 2.7 V to 5.25 V |
| Operating Temperature | –40°C to +105°C |
| Input Type | Differential, buffered or unbuffered |
| Reference Voltage | Internal 1.17 V or external reference |
| Update Rate | User-programmable, with notches for 50 Hz and 60 Hz rejection at 16.7 Hz or less |
| Current Consumption (typical) | 130 μA @ AVDD = 3 V, 165 μA @ AVDD = 5 V (buffered mode) |
| Package | 16-Lead TSSOP |
Key Features
- Low noise and low power consumption, making it suitable for battery-powered applications.
- On-chip digital filter with simultaneous 50 Hz and 60 Hz rejection.
- Programmable update rates and settling times.
- Dedicated offset registers for each analog input channel.
- SPI-compatible serial interface for communication.
- Internal or external reference voltage options.
Applications
The AD7792BRU is designed for various precision measurement applications, including:
- Pressure transducers
- Weigh scales
- Temperature measurement
- Medical devices requiring high accuracy and low noise
- Industrial automation and control systems
Q & A
- What is the resolution of the AD7792BRU?
The AD7792BRU has a resolution of 16 bits. - What is the operating temperature range of the AD7792BRU?
The operating temperature range is –40°C to +105°C. - Can the AD7792BRU use an external reference voltage?
Yes, the AD7792BRU can use either an internal 1.17 V reference or an external reference voltage. - What type of inputs does the AD7792BRU support?
The AD7792BRU supports differential inputs, which can be either buffered or unbuffered. - How is the update rate of the AD7792BRU controlled?
The update rate of the AD7792BRU is user-programmable. - What is the typical current consumption of the AD7792BRU?
The typical current consumption is 130 μA @ AVDD = 3 V and 165 μA @ AVDD = 5 V in buffered mode. - What is the package type of the AD7792BRU?
The AD7792BRU comes in a 16-Lead TSSOP package. - Does the AD7792BRU have built-in digital filtering?
Yes, the AD7792BRU includes an on-chip digital filter with notches for 50 Hz and 60 Hz rejection. - How does the AD7792BRU communicate with other devices?
The AD7792BRU communicates via an SPI-compatible serial interface. - What are some common applications of the AD7792BRU?
Common applications include pressure transducers, weigh scales, temperature measurement, medical devices, and industrial automation.
