Overview
The AD7417ARZ from Analog Devices Inc. is a versatile and highly integrated analog-to-digital converter (ADC) that combines multiple functionalities in a single package. This device is a 10-bit, 4-channel ADC with an on-chip temperature sensor, making it suitable for a wide range of applications that require both analog data acquisition and ambient temperature monitoring. The AD7417ARZ operates from a single 2.7 V to 5.5 V power supply and features an I2C-compatible serial interface, allowing for easy integration into various systems.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 10 | Bits | Minimum resolution for which no missing codes are guaranteed |
| Relative Accuracy | ±1 | LSB max | Typical for VDD of 3.6 V to 5.5 V |
| Differential Nonlinearity | ±1 | LSB max | Typical for VDD of 3.6 V to 5.5 V |
| Gain Error | ±3 | LSB max | External reference ±10 LSB max, Internal reference |
| Offset Error | ±4 | LSB max | |
| Input Voltage Range | 0 to VREF | V | |
| Input Leakage Current | ±1 | μA max | |
| Input Capacitance | 10 | pF max | |
| Temperature Sensor Measurement Error | ±2 °C max at 25°C, ±3 °C max from TMIN to TMAX | °C | |
| Temperature Resolution | 1/4 °C/LSB | ||
| Conversion Time | 15 μs max for channels 1 to 4, 30 μs max for temperature sensor | μs | |
| Power Supply Range | 2.7 V to 5.5 V | V |
Key Features
- Multi-channel ADC: The AD7417ARZ features four external voltage input channels, each capable of converting voltage signals in the range of 0 V to VREF.
- On-chip Temperature Sensor: The device includes an on-chip temperature sensor that can measure ambient temperature with an accuracy of ±2 °C at 25°C and ±3 °C over the full temperature range.
- I2C-compatible Serial Interface: The AD7417ARZ uses an I2C-compatible serial interface, allowing for easy communication and integration with other devices. The interface supports selectable serial bus addresses, enabling up to 8 devices to be connected to a single bus.
- Automatic Power-down: The device features an automatic power-down mode at the end of each conversion, significantly reducing power consumption, especially at slower throughput rates.
- Wide Operating Supply Range: The AD7417ARZ can operate from a single power supply ranging from 2.7 V to 5.5 V, making it versatile for various applications.
Applications
- Data Acquisition with Ambient Temperature Monitoring: Ideal for systems that require simultaneous measurement of analog signals and ambient temperature.
- Industrial Process Control: Suitable for monitoring and controlling industrial processes where temperature and analog data are critical.
- Automotive Applications: Used in automotive systems for temperature monitoring and data acquisition.
- Battery Charging Applications: Can be used to monitor battery health and charging conditions.
- Personal Computers and Consumer Electronics: Useful in various consumer electronics for temperature monitoring and data acquisition.
Q & A
- What is the resolution of the AD7417ARZ ADC?
The AD7417ARZ has a 10-bit resolution.
- What is the operating voltage range of the AD7417ARZ?
The device operates from a single power supply ranging from 2.7 V to 5.5 V.
- How many external voltage input channels does the AD7417ARZ have?
The AD7417ARZ has four external voltage input channels.
- What is the accuracy of the on-chip temperature sensor at 25°C?
The temperature sensor has an accuracy of ±2 °C at 25°C.
- What type of serial interface does the AD7417ARZ use?
The device uses an I2C-compatible serial interface.
- Can multiple AD7417ARZ devices be connected to a single bus?
Yes, up to 8 devices can be connected to a single bus due to the selectable serial bus addresses.
- What is the conversion time for the analog input channels?
The conversion time for channels 1 to 4 is 15 μs max, and for the temperature sensor, it is 30 μs max.
- Does the AD7417ARZ have an automatic power-down feature?
Yes, the device features an automatic power-down mode at the end of each conversion to reduce power consumption.
- Is the AD7417ARZ RoHS compliant?
Yes, the AD7417ARZ is RoHS compliant.
- What are some common applications of the AD7417ARZ?
Common applications include data acquisition with ambient temperature monitoring, industrial process control, automotive applications, battery charging, and personal computers.
