Overview
The AD7398BRZ from Analog Devices Inc. is a quad, serial-input, 12-bit digital-to-analog converter (DAC) designed for low-cost and ease-of-use in various applications. Built using the robust CBCMOS process, this monolithic DAC supports single or dual-supply systems, making it versatile for different operational requirements. The device features a 3-wire, serial SPI-compatible interface and double-buffered registers for simultaneous multichannel DAC updates. It is particularly useful in applications requiring precise voltage output control and power efficiency.
Key Specifications
| Parameter | Condition | Value | Unit |
|---|---|---|---|
| Resolution | - | 12 bits | - |
| Relative Accuracy | 3 V to 5 V ± 10%, VDD = 5 V, VSS = 0 V, VREF = +2.5 V, -40°C < TA < +125°C | ±1.5 LSB max | - |
| Differential Nonlinearity | 3 V to 5 V ± 10%, VDD = 5 V, VSS = 0 V, -40°C < TA < +125°C | ±1 LSB max (monotonic) | - |
| Zero-Scale Error | Data = 000H | ±4 mV max | mV |
| Full-Scale Voltage Error | Data = FFFH | ±2.5 mV max | mV |
| Full-Scale Tempco | 3 V to 5 V ± 10%, VDD = 5 V, VSS = 0 V, VREF = +2.5 V, -40°C < TA < +125°C | 1.5 ppm/°C typ | ppm/°C |
| Output Slew Rate | Data = 000H to FFFH to 000H | 2 V/μs typ | V/μs |
| Settling Time | To ±0.1% of full scale | 6 μs typ | μs |
| Shutdown Recovery | - | 6 μs typ | μs |
| Supply Voltage | - | 3 V to 5 V, ±5 V | V |
| Positive Supply Current | VIL = 0 V, no load, -40°C < TA < +125°C | 1.5/2.8 mA typ/max | mA |
| Shutdown Supply Current | No load | 30/60 μA typ/max | μA |
| Operating Temperature | - | -40°C to +125°C | °C |
| Package | - | 16-lead SOIC-W | - |
Key Features
- Programmable Power Shutdown: Allows for power shutdown of individual DAC channels or all channels simultaneously.
- 3-Wire, Serial SPI-Compatible Interface: High-speed interface compatible with SPI and microcontrollers.
- Internal Power-On Reset: Ensures the DACs are in a known state at power-up.
- Double-Buffered Registers: Enables simultaneous update of all DAC outputs from previously loaded input registers.
- Single or Dual-Supply Operation: Supports operation with single (3 V to 5 V) or dual (±5 V) supply systems.
- High Accuracy and Linearity: Features high relative accuracy and differential nonlinearity, ensuring precise voltage output.
- Wide Operating Temperature Range: Operates from -40°C to +125°C, making it suitable for various environmental conditions.
Applications
- Automotive Systems: Suitable for applications requiring precise voltage control, such as automotive output voltage span.
- Portable Communications: Used in portable communication devices due to its low power consumption and high accuracy.
- Digitally Controlled Calibration: Ideal for calibration in various electronic systems where precise voltage control is necessary.
- PC Peripherals: Can be used in PC peripherals that require high-precision analog output.
Q & A
- What is the resolution of the AD7398BRZ DAC?
The AD7398BRZ has a 12-bit resolution.
- What types of supply voltages does the AD7398BRZ support?
The AD7398BRZ supports single (3 V to 5 V) and dual (±5 V) supply systems.
- What is the interface type of the AD7398BRZ?
The AD7398BRZ features a 3-wire, serial SPI-compatible interface.
- Does the AD7398BRZ have programmable power shutdown?
Yes, the AD7398BRZ allows for programmable power shutdown of individual or all DAC channels.
- What is the operating temperature range of the AD7398BRZ?
The operating temperature range is from -40°C to +125°C.
- What is the typical settling time of the AD7398BRZ?
The typical settling time is 6 μs to ±0.1% of full scale.
- What is the package type of the AD7398BRZ?
The AD7398BRZ comes in a 16-lead SOIC-W package.
- Is the AD7398BRZ suitable for automotive applications?
Yes, it is suitable for automotive applications due to its high accuracy and wide operating temperature range.
- Can the AD7398BRZ be used in portable communication devices?
Yes, it is suitable for portable communication devices due to its low power consumption and high accuracy.
- What is the relative accuracy of the AD7398BRZ?
The relative accuracy is ±1.5 LSB max.
