Overview
The AD7793BRU, produced by Analog Devices Inc., is a 3-channel, low noise, low power analog-to-digital converter (ADC) designed for measuring wide dynamic range, low frequency signals. This device incorporates a ∑-Δ modulator, a buffer, reference, in-amp, and an on-chip digital filter, making it suitable for applications such as pressure transducers, weigh scales, and temperature measurement. The ADC can operate with either an internal 1.17 V reference or an external reference and features three differential inputs that can be configured as buffered or unbuffered.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 3 |
| Resolution | 16-bit or 24-bit |
| Supply Voltage (AVDD/DVDD) | 2.7 V to 5.25 V |
| Operating Temperature | –40°C to +105°C |
| Package Type | 16-Lead TSSOP |
| Internal Reference Voltage | 1.17 V |
| Typical Current Consumption (unbuffered mode, AVDD = 5 V) | 125 μA |
| Typical Current Consumption (buffered mode, AVDD = 5 V, gain = 1 or 2) | 165 μA |
Key Features
- Low noise and low power consumption, making it suitable for battery-powered applications.
- Three differential inputs that can be configured as buffered or unbuffered.
- Programmable output data rate with simultaneous 50 Hz and 60 Hz rejection optimized at certain update rates.
- On-chip digital filter for noise rejection.
- Serial interface for communication (CS, DIN, SCLK, and DOUT/RDY).
- Full-scale registers for each channel, configurable via the serial interface.
Applications
- Pressure transducers
- Weigh scales
- Temperature measurement
- Other low frequency signal measurement applications requiring high precision and low noise.
Q & A
- What is the resolution of the AD7793BRU ADC?
The AD7793BRU has a resolution of either 16-bit or 24-bit. - What is the operating temperature range of the AD7793BRU?
The operating temperature range is –40°C to +105°C. - Can the AD7793BRU use an external reference voltage?
Yes, the AD7793BRU can operate with either an internal 1.17 V reference or an external reference. - How many channels does the AD7793BRU have?
The AD7793BRU has three differential input channels. - What is the typical current consumption of the AD7793BRU in unbuffered mode?
The typical current consumption in unbuffered mode at AVDD = 5 V is 125 μA. - What type of package does the AD7793BRU come in?
The AD7793BRU comes in a 16-Lead TSSOP package. - Is the AD7793BRU still in production?
No, the AD7793BRU is obsolete and no longer manufactured. - What are the key components integrated into the AD7793BRU?
The AD7793BRU integrates a ∑-Δ modulator, a buffer, reference, in-amp, and an on-chip digital filter. - How is communication with the AD7793BRU achieved?
Communication is achieved through a serial interface consisting of CS, DIN, SCLK, and DOUT/RDY signals. - What types of applications is the AD7793BRU suitable for?
The AD7793BRU is suitable for applications such as pressure transducers, weigh scales, and temperature measurement.
