Overview
The AD7190WBRUZ, produced by Analog Devices Inc., is a low noise, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC) designed for high precision measurement applications. It features an on-chip low noise gain stage, allowing direct interface of small amplitude signals to the ADC. The device supports two differential inputs or four pseudo differential inputs and includes an on-chip channel sequencer for sequential conversion of enabled channels. This ADC is particularly useful in applications requiring high accuracy and low noise performance.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| ADC Output Data Rate | 4.7 to 4800 Hz | Hz | Nom, chop disabled |
| Power Supply Voltage (AVDD - AGND) | 4.75 to 5.25 V | V | Min/Max |
| Power Supply Voltage (DVDD - DGND) | 2.7 to 5.25 V | V | Min/Max |
| Power Supply Currents (AIDD) | 6 mA | mA | Max, typical values vary with gain and buffer settings |
| Package Type | 24-Lead TSSOP | ||
| Operating Temperature Range | -40°C to +105°C | °C | |
| Clock Source | On-chip 4.92 MHz clock or external clock/crystal |
Key Features
- Low noise, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC)
- On-chip low noise gain stage for direct interface of small amplitude signals
- Support for two differential inputs or four pseudo differential inputs
- On-chip channel sequencer for sequential conversion of enabled channels
- Two digital filter options affecting noise/noise-free resolution, settling time, and 50 Hz/60 Hz rejection
- Zero latency feature for applications requiring all conversions to be settled
- Operates with 5 V analog power supply and 2.7 V to 5.25 V digital power supply
Applications
- Weigh scales
- Strain gauge transducers
- Pressure measurement
- Temperature measurement
- Chromatography
- PLC/DCS analog input modules
- Data acquisition
- Medical and scientific instrumentation
Q & A
- What is the AD7190WBRUZ?
The AD7190WBRUZ is a 24-bit sigma-delta analog-to-digital converter (ADC) designed for high precision measurement applications.
- What are the key features of the AD7190WBRUZ?
Key features include a low noise gain stage, support for differential and pseudo differential inputs, an on-chip channel sequencer, and two digital filter options.
- What are the power supply requirements for the AD7190WBRUZ?
The device operates with a 5 V analog power supply and a digital power supply ranging from 2.7 V to 5.25 V.
- What is the output data rate range of the AD7190WBRUZ?
The output data rate can be varied from 4.7 Hz to 4.8 kHz.
- What types of applications is the AD7190WBRUZ suitable for?
It is suitable for applications such as weigh scales, strain gauge transducers, pressure measurement, temperature measurement, chromatography, and medical instrumentation.
- What is the package type of the AD7190WBRUZ?
The device is housed in a 24-lead TSSOP package.
- Can the AD7190WBRUZ use an external clock source?
Yes, the AD7190WBRUZ can use either the on-chip 4.92 MHz clock or an external clock or crystal.
- What is the zero latency feature in the AD7190WBRUZ?
The zero latency feature ensures that all conversions are settled, which is crucial for certain applications.
- How does the AD7190WBRUZ handle 50 Hz/60 Hz rejection?
The device includes a feature to place a notch at 60 Hz when the output data rate is set to 50 Hz, allowing simultaneous 50 Hz/60 Hz rejection.
- What is the operating temperature range of the AD7190WBRUZ?
The operating temperature range is from -40°C to +105°C.
