Overview
The AD7793BRUZ is a high-precision, low-power analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7792/AD7793 series, which are designed as complete analog front ends for high-precision measurement applications. The AD7793 features a 24-bit sigma-delta ADC with three differential analog inputs, an on-chip low noise instrumentation amplifier, and a precision low noise, low drift internal band gap reference. It is housed in a 16-lead TSSOP package and operates with a power supply from 2.7 V to 5.25 V, consuming a typical current of 400 μA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 24 | |
| Number of Channels | 3 | |
| Sampling Rate | 4.17 Hz to 470 Hz | Hz |
| Polarity | Bipolar | |
| Interface | SPI | |
| Supply Voltage | 2.7 V to 5.25 V | V |
| Current Consumption | 400 μA (typical) | μA |
| Package Type | 16-TSSOP (0.173", 4.40mm Width) | |
| Operating Temperature Range | -40°C to +105°C | °C |
Key Features
- Low noise 24-bit sigma-delta ADC with three differential analog inputs.
- On-chip low noise instrumentation amplifier for direct interface with small amplitude signals.
- Precision low noise, low drift internal band gap reference, with the option to use an external differential reference.
- Programmable excitation current sources, burnout currents, and a bias voltage generator.
- Software-programmable output data rate from 4.17 Hz to 470 Hz.
- Operates with either an internal clock or an external clock, allowing synchronization of multiple devices.
- Low power consumption with a typical current of 400 μA.
- Serial interface (SPI) for communication.
Applications
The AD7793 is designed for high-precision measurement applications, including:
- Pressure transducers
- Weigh scales
- Temperature measurement
- Other applications requiring the measurement of wide dynamic range, low frequency signals.
Q & A
- What is the resolution of the AD7793 ADC?
The AD7793 has a 24-bit resolution.
- How many analog input channels does the AD7793 have?
The AD7793 has three differential analog input channels.
- What is the operating voltage range of the AD7793?
The AD7793 operates with a power supply from 2.7 V to 5.25 V.
- What is the typical current consumption of the AD7793?
The typical current consumption is 400 μA.
- Can the AD7793 use an external clock?
- What is the sampling rate range of the AD7793?
The output data rate is software-programmable from 4.17 Hz to 470 Hz.
- Does the AD7793 have an on-chip reference?
- What type of interface does the AD7793 use?
The AD7793 uses a serial interface (SPI) for communication.
- What is the package type of the AD7793?
The AD7793 is housed in a 16-lead TSSOP package.
- What are some common applications of the AD7793?
