Overview
The AD7709BRUZ, produced by Analog Devices Inc., is a highly integrated 16-bit sigma-delta analog-to-digital converter (ADC) designed for low-frequency measurement applications. This device serves as a complete analog front-end, capable of directly converting low-level input signals from transducers without the need for additional signal conditioning. The AD7709 features a programmable gain amplifier (PGA), switchable reference inputs, and multiple on-chip current sources, making it versatile for various measurement tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Architecture | Sigma-Delta |
| Number of Input Channels | 2 (fully-differential), 4 (pseudo-differential) |
| Input Signal Range | 20mV to 2.56V |
| Input Type | Differential, Pseudo-Differential |
| Data Interface | SPI, DSP |
| Voltage - Supply, Analog | 2.7 V ~ 3.3 V, 5V |
| Voltage - Supply, Digital | 2.7 V ~ 3.3 V, 5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 24-Lead TSSOP (0.173", 4.40mm Width) |
| Current Sources | Three software configurable current sources |
| Reference Type | Switchable reference inputs |
| Digital I/O Port | 4-bit digital I/O port |
Key Features
- Programmable Gain Amplifier (PGA): Allows for flexible gain settings to accommodate a wide range of input signal levels.
- Switchable Reference Inputs: Enables the use of different reference voltages, enhancing the device's versatility in various applications.
- On-Chip Current Sources: Three software configurable current sources are available for driving external sensors or transducers.
- Low Side Power Switches: Provides the ability to control power to external devices, helping in power management and reducing overall system power consumption.
- Digital Filter and Output Update Rate: The digital filter's first notch can be programmed, allowing for adjustment of the filter cutoff and output update rate.
- 4-Bit Digital I/O Port: Offers additional functionality for controlling external devices or communicating with other parts of the system.
Applications
The AD7709BRUZ is suitable for a variety of low-frequency measurement applications, including:
- Industrial Automation: For measuring signals from sensors and transducers in industrial control systems.
- Medical Devices: In medical equipment where precise measurement of low-level signals is critical.
- Test and Measurement Equipment: For building precise measurement instruments that require high accuracy and low noise.
- Environmental Monitoring: For monitoring environmental parameters such as temperature, pressure, and humidity.
Q & A
- What is the resolution of the AD7709BRUZ ADC?
The AD7709BRUZ has a resolution of 16 bits.
- What types of input channels does the AD7709BRUZ support?
The device supports 2 fully-differential input channels or 4 pseudo-differential input channels.
- What is the input signal range for the AD7709BRUZ?
The input signal range is from 20mV to 2.56V.
- What interfaces does the AD7709BRUZ support for data communication?
The device supports SPI and DSP interfaces.
- What is the operating temperature range of the AD7709BRUZ?
The operating temperature range is -40°C to 85°C.
- What package type is the AD7709BRUZ available in?
The device is available in a 24-Lead TSSOP package.
- Does the AD7709BRUZ have on-chip current sources?
Yes, it has three software configurable current sources.
- Can the reference inputs of the AD7709BRUZ be switched?
Yes, the device has switchable reference inputs.
- What additional digital functionality does the AD7709BRUZ offer?
The device includes a 4-bit digital I/O port.
- In what applications is the AD7709BRUZ commonly used?
It is commonly used in industrial automation, medical devices, test and measurement equipment, and environmental monitoring.
