Overview
The AD7782BRUZ-REEL is a 24-bit low-cost, low-power Sigma-Delta Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device is designed for DC and low-frequency AC measurement applications. It features a simple interface with no writable registers, making it easy to integrate with controllers. The ADC can be powered via a loop, battery, or local power source due to its low power consumption. The on-chip Programmable Gain Amplifier (PGA) supports both low-level and high-level analog inputs without the need for external signal conditioning hardware. Operating options are pin-programmable, eliminating the need for software configuration.
Key Specifications
| Parameter | Value | Unit | Test Conditions |
|---|---|---|---|
| Resolution | 24 Bits | - | - |
| Output Update Rate | 19.79 Hz | - | Nominal |
| Input Voltage Range | ±160 mV or ±2.56 V | - | RANGE = 0 or RANGE = 1 |
| Integral Nonlinearity | ±10 ppm of FSR | - | Maximum |
| Offset Error | ±3 µV | - | Typical, AIN(+) = AIN(–) = 2.5 V |
| Power Supply | 2.7 V to 5 V | - | - |
| Power Dissipation (at 3V) | 3.9 mW | - | - |
| Package | 16-Lead TSSOP | - | - |
| Operating Temperature | -40°C to +85°C | - | - |
Key Features
- Low Power Consumption: The AD7782BRUZ-REEL operates with low power, making it suitable for loop-powered, battery-powered, or locally powered applications.
- On-Chip PGA: The device includes a two-setting on-chip PGA that can accommodate both low-level and high-level analog inputs without external signal conditioning hardware.
- Simple Interface: The ADC has no writable registers, simplifying the interface between the ADC and the controller.
- Buffered Input Channels: The input channels are buffered, allowing for significant source impedances and enabling R, C filtering for noise rejection or RFI reduction.
- Simultaneous 50 Hz and 60 Hz Rejection: The device provides simultaneous rejection of 50 Hz and 60 Hz noise at the specified update rate.
Applications
The AD7782BRUZ-REEL is suitable for a variety of applications, including:
- DC and Low-Frequency AC Measurements: Ideal for measuring DC and low-frequency AC signals in industrial, medical, and consumer electronics.
- Industrial Automation: Used in sensors and measurement systems that require high accuracy and low power consumption.
- Medical Devices: Suitable for medical equipment that requires precise and low-noise signal conversion.
- Consumer Electronics: Can be used in various consumer electronics that require accurate analog-to-digital conversion.
Q & A
- What is the resolution of the AD7782BRUZ-REEL?
The AD7782BRUZ-REEL has a resolution of 24 bits.
- What are the input voltage ranges supported by the AD7782BRUZ-REEL?
The device supports input voltage ranges of ±160 mV or ±2.56 V.
- What is the output update rate of the AD7782BRUZ-REEL?
The output update rate is 19.79 Hz.
- What type of power supply does the AD7782BRUZ-REEL require?
The device operates from a single 2.7 V to 5 V power supply.
- What is the power dissipation of the AD7782BRUZ-REEL when operating at 3V?
The power dissipation is 3.9 mW when operating at 3V.
- What package type is the AD7782BRUZ-REEL available in?
The device is available in a 16-lead TSSOP package.
- Does the AD7782BRUZ-REEL have any integrated current sources?
No, the AD7782BRUZ-REEL does not have integrated current sources. However, the AD7783, a similar model, does have two integrated current sources.
- How does the AD7782BRUZ-REEL handle noise rejection?
The device provides simultaneous 50 Hz and 60 Hz rejection at the specified update rate and allows for R, C filtering on the analog inputs for noise rejection or RFI reduction.
- What is the operating temperature range of the AD7782BRUZ-REEL?
The operating temperature range is -40°C to +85°C.
- Is the AD7782BRUZ-REEL pin-programmable or software-programmable?
The operating options of the AD7782BRUZ-REEL are pin-programmable, not software-programmable.
