Overview
The AD7416AR-REEL7, produced by Analog Devices Inc., is a temperature-monitoring only device designed for accurate ambient temperature measurement. This component is part of the AD7416 series and is housed in an 8-lead SOIC package. It operates on a wide supply range of 2.7 V to 5.5 V and features an I2C-compatible serial interface, allowing for easy integration into various systems. The AD7416 is particularly useful for applications requiring precise temperature monitoring without the need for additional analog input channels.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | For specified performance | |
| Temperature Range | -40 | 125 | °C | ||
| Temperature Accuracy | ±1 | ±2 | °C | At 25°C and -25°C to +100°C respectively | |
| Resolution | 10 | Bits | |||
| Temperature Conversion Time | 30 | ms | |||
| Supply Current (I2C active) | 1.0 | mA | |||
| Supply Current (I2C inactive) | 0.35 | 0.6 | mA | ||
| Supply Current (Shutdown mode) | 0.2 | 1.5 | μA | ||
| Digital Input High Voltage (VIH) | VDD × 0.7 | V | |||
| Digital Input Low Voltage (VIL) | VDD × 0.3 | V |
Key Features
- Accurate Temperature Measurement: The AD7416 provides accurate ambient temperature measurement with an accuracy of ±1°C at 25°C and ±2°C over the range of -25°C to +100°C.
- Wide Operating Supply Range: Operates from 2.7 V to 5.5 V, making it versatile for various power supply conditions.
- I2C-Compatible Serial Interface: Allows for easy communication and integration with other I2C devices.
- Selectable Serial Bus Address: Enables connection of up to eight AD7416 devices to a single bus.
- Low Power Consumption: Features automatic power-down at the end of a conversion and low supply current in inactive and shutdown modes.
- On-Chip Reference and Clock Oscillator: Includes a 2.5 V internal reference and an internal clock oscillator, eliminating the need for external components.
Applications
- Data Acquisition with Ambient Temperature Monitoring: Ideal for systems that require precise temperature monitoring.
- Industrial Process Control: Suitable for monitoring temperatures in industrial environments.
- Automotive and Battery-Charging Applications: Can be used in automotive systems and battery charging circuits where temperature monitoring is critical.
- Personal Computers: Useful for temperature monitoring in computer systems to ensure optimal operating conditions.
Q & A
- What is the operating supply voltage range of the AD7416?
The AD7416 operates from 2.7 V to 5.5 V. - What is the accuracy of the temperature measurement provided by the AD7416?
The temperature accuracy is ±1°C at 25°C and ±2°C over the range of -25°C to +100°C. - How many devices can be connected to a single I2C bus?
Up to eight AD7416 devices can be connected to a single I2C bus due to the selectable serial bus address feature. - What is the typical conversion time for temperature measurement?
The typical conversion time for temperature measurement is 30 ms. - Does the AD7416 have any analog input channels?
No, the AD7416 is designed for temperature measurement only and does not have any analog input channels. - What is the power consumption in shutdown mode?
The supply current in shutdown mode is between 0.2 μA and 1.5 μA. - Can the AD7416 be used in automotive applications?
Yes, the AD7416 is suitable for use in automotive applications due to its wide operating temperature range and low power consumption. - How is the temperature measurement initiated on the AD7416?
Temperature measurement is initiated by selecting Channel 0 of the on-chip multiplexer and carrying out a conversion on this channel. - What is the resolution of the ADC in the AD7416?
The resolution of the ADC is 10 bits. - Is the AD7416AR-REEL7 still in production?
No, the AD7416AR-REEL7 is obsolete and no longer manufactured. However, substitutes like the AD7416ARZ-REEL are available.
