Overview
The AD7416ARM-REEL7, produced by Analog Devices Inc., is a temperature-monitoring only device designed for precise ambient temperature measurement. It is housed in an 8-lead MSOP package and operates within a wide supply voltage range of 2.7 V to 5.5 V. This device is particularly useful for applications requiring accurate temperature sensing and is a superior replacement for the LM75 temperature sensor. The AD7416 integrates an on-chip temperature sensor that can be accessed via a multiplexer, providing a measurement of the ambient temperature with an accuracy of ±2°C over the temperature range of -25°C to +100°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 V | 5.5 V | |||
| Temperature Sensor Accuracy | ±2.0 °C | ±3.0 °C | TA = −25°C to +100°C (VDD = 3 V minimum), TA = −40°C to +125°C (VDD = 3 V minimum) | ||
| Resolution | 10 Bits | ||||
| Temperature Conversion Time | 40 μs | ||||
| Update Rate (tR) | 400 μs | ||||
| Supply Current (I2C active) | 1.0 mA | ||||
| Supply Current (I2C inactive) | 350 μA | 600 μA | |||
| Supply Current (Shutdown mode) | 0.2 μA | 1.5 μA | |||
| Operating Temperature Range | -40 °C | +125 °C |
Key Features
- I2C-compatible serial interface with selectable serial bus address, allowing up to 8 devices on a single bus.
- Automatic power-down at the end of a conversion to conserve power.
- On-chip temperature sensor with a measurement range of -40°C to +125°C.
- High accuracy temperature measurement with ±2°C accuracy at 25°C.
- Wide operating supply range of 2.7 V to 5.5 V.
- Low power consumption with supply currents as low as 0.2 μA in shutdown mode.
Applications
- Data acquisition with ambient temperature monitoring.
- Industrial process control.
- Automotive applications.
- Battery-charging systems.
- Personal computers and other electronic devices requiring temperature monitoring.
Q & A
- What is the primary function of the AD7416ARM-REEL7? The primary function is temperature monitoring using an on-chip temperature sensor.
- What is the operating supply voltage range of the AD7416ARM-REEL7? The device operates within a supply voltage range of 2.7 V to 5.5 V.
- How accurate is the temperature measurement of the AD7416ARM-REEL7? The temperature measurement accuracy is ±2°C over the range of -25°C to +100°C.
- What is the resolution of the temperature sensor in the AD7416ARM-REEL7? The resolution is 10 bits.
- What is the typical temperature conversion time for the AD7416ARM-REEL7? The typical temperature conversion time is 40 μs.
- Can multiple AD7416ARM-REEL7 devices be connected to a single I2C bus? Yes, up to 8 devices can be connected to a single I2C bus due to the selectable serial bus address feature.
- What are the typical supply currents for the AD7416ARM-REEL7 in different modes? The supply currents are 1.0 mA (I2C active), 350-600 μA (I2C inactive), and 0.2-1.5 μA (shutdown mode).
- What is the operating temperature range of the AD7416ARM-REEL7? The operating temperature range is -40°C to +125°C.
- Does the AD7416ARM-REEL7 require an external clock for operation? No, the conversion clock is internally generated, although an external clock may be needed for reading and writing to the serial port.
- What are some common applications of the AD7416ARM-REEL7? Common applications include data acquisition, industrial process control, automotive systems, battery-charging applications, and personal computers.
