Overview
The AD7391AR-REEL is a 10-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7390/AD7391 family, designed for single-supply operation and is particularly suited for applications requiring low power consumption and high precision. The AD7391AR-REEL operates from a supply voltage range of 2.7V to 5.5V, making it ideal for battery-operated devices and other low-power systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD7391AR-REEL |
| Package / Case | 8-SOIC (0.154, 3.90mm Width) |
| Number of Pins | 8 |
| Number of Bits | 10 |
| Settling Time | 70μs (Typ) |
| Interface | SPI, Serial |
| Integral Nonlinearity (INL) | ±2 LSB (Max) |
| Polarity | Unipolar |
| Min Supply Voltage | 2.7V |
| Max Supply Voltage | 5.5V |
| Power Dissipation | 500μW |
| Operating Temperature | -40°C to 125°C |
| Sampling Rate | 17 ksps |
| Output Type | Voltage - Buffered |
| Reference Type | External |
Key Features
- Low Power Consumption: The AD7391AR-REEL consumes less than 100μA of current, making it suitable for battery-operated applications.
- Single-Supply Operation: Operates from a single supply voltage ranging from 2.7V to 5.5V.
- High Precision: Features a 10-bit resolution with an integral nonlinearity (INL) of ±2 LSB (Max).
- Serial Interface: SPI and QSPI compatible serial-data interface with Schmitt trigger inputs.
- Rail-to-Rail Output: The output voltage span can be set equal to the positive supply VDD or any value in between.
- Buffered Output: Includes rail-to-rail output op amps for stable and accurate voltage output.
- Preloading Capability: The serial-input register is separate from the DAC register, allowing preloading of new data without disturbing the present DAC values.
Applications
- Automotive Systems: Suitable for automotive applications due to its wide operating temperature range and low power consumption.
- Portable Communications: Ideal for portable communication devices requiring low power and high precision.
- Digitally Controlled Calibration: Used in systems that require precise digital control over analog outputs.
- Battery-Operated Devices: Perfect for devices that need to operate on a single battery supply with minimal power drain.
Q & A
- What is the resolution of the AD7391AR-REEL?
The AD7391AR-REEL has a 10-bit resolution.
- What is the operating supply voltage range of the AD7391AR-REEL?
The operating supply voltage range is from 2.7V to 5.5V.
- What type of interface does the AD7391AR-REEL use?
The AD7391AR-REEL uses an SPI and QSPI compatible serial-data interface.
- What is the settling time of the AD7391AR-REEL?
The settling time is 70μs (Typ).
- Is the AD7391AR-REEL suitable for battery-operated devices?
Yes, it is suitable due to its low power consumption of less than 100μA.
- What is the output type of the AD7391AR-REEL?
The output type is Voltage - Buffered.
- Can the AD7391AR-REEL operate over a wide temperature range?
Yes, it operates from -40°C to 125°C.
- What is the sampling rate of the AD7391AR-REEL?
The sampling rate is 17 ksps.
- Does the AD7391AR-REEL support preloading of new data?
Yes, it allows preloading of new data into the serial register without disturbing the present DAC values.
- What is the package type of the AD7391AR-REEL?
The package type is 8-SOIC (0.154, 3.90mm Width).
