Overview
The AD7398BRZ-REEL is a quad, serial-input digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is built using the robust CBCMOS process, offering low cost and ease of use in both single and dual-supply systems. It is available in a surface mount package and is suitable for a wide range of applications requiring precise analog output control.
Key Specifications
| Parameter | Value | Unit | Condition |
|---|---|---|---|
| Resolution | 12-bit | - | - |
| Supply Voltage | 3 V to 5 V (single supply), ±5 V (dual supply) | V | - |
| Output Slew Rate | 2 V/μs (typical) | V/μs | Data = 000H to 3FFH to 000H |
| Settling Time | 6 μs (typical) | μs | To ±0.1% of full scale |
| Shutdown Recovery Time | 6 μs (typical) | μs | - |
| DAC Glitch | 150 nVs (typical) | nVs | Code 1FFH to 200H to 1FFH |
| Digital Feedthrough | 15 nVs (typical) | nVs | VREF = 1.5 VDC + 1 V p-p, f = 100 kHz |
| Shutdown Supply Current | 30/60 μA (typical/max) | μA | No load |
| Positive Supply Current | 1.5/2.8 mA (typical/max) | mA | VIL = 0 V, no load, -40°C < TA < +125°C |
Key Features
- Programmable power shutdown
- Single (3 V to 5 V) or dual (±5 V) supply operation
- 3-wire, serial SPI-compatible interface
- Internal power-on reset and external asynchronous reset
- Double-buffered registers for simultaneous update of all DAC outputs
- Level-sensitive load-DAC strobe (LDAC) input
- Wide range of full-scale output voltages determined by external reference VREF
Applications
The AD7398BRZ-REEL is suitable for various applications requiring precise digital-to-analog conversion, such as industrial control systems, medical devices, automotive systems, and any scenario where multiple analog outputs need to be controlled from a serial interface.
Q & A
- What is the resolution of the AD7398BRZ-REEL DAC?
The AD7398BRZ-REEL has a 12-bit resolution. - What are the supply voltage options for this DAC?
The DAC can operate with a single supply voltage of 3 V to 5 V or a dual supply voltage of ±5 V. - What is the output slew rate of the AD7398BRZ-REEL?
The output slew rate is typically 2 V/μs. - How long does it take for the DAC to settle to ±0.1% of full scale?
The settling time is typically 6 μs. - Does the AD7398BRZ-REEL support programmable power shutdown?
Yes, it supports programmable power shutdown. - What type of interface does the AD7398BRZ-REEL use?
The DAC uses a 3-wire, serial SPI-compatible interface. - How does the DAC handle power-on and asynchronous resets?
The DAC has an internal power-on reset and an external asynchronous reset. - Can the AD7398BRZ-REEL update all DAC outputs simultaneously?
Yes, it can update all DAC outputs simultaneously using the double-buffered registers and the level-sensitive load-DAC strobe (LDAC) input. - What determines the full-scale output voltage of the AD7398BRZ-REEL?
The full-scale output voltage is determined by the external reference voltage VREF. - What are some typical applications for the AD7398BRZ-REEL?
Typical applications include industrial control systems, medical devices, and automotive systems.
