Overview
The AD7849BR-REEL is a 14-bit/16-bit serial input multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is designed to provide high-resolution and precise control over output voltage, making it suitable for various applications requiring accurate analog output. The DAC architecture ensures excellent differential linearity performance and guarantees monotonicity to 14 bits for the A grade and to 16 bits for all other grades over specified temperature ranges.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 14-bit/16-bit | - | - |
| Input High Voltage (VINH) | 2.4 | V | min |
| Input Low Voltage (VINL) | 0.8 | V | max |
| Input Current (IINH) | ±10 | μA | max |
| Input Capacitance (CIN) | 10 | pF | max |
| Output Low Voltage (VOL) | 0.4 | V | max, ISINK = 1.6 mA |
| Output High Voltage (VOH) | 4.0 | V | min, ISOURCE = 400 μA |
| Settling Time | 7 μs | - | - |
| Supply Voltage (VDD) | 14.25/15.75 | V | min/max |
| Package Type | 20-pin SOIC (Wide) | - | - |
Key Features
- High resolution: 14-bit/16-bit multiplying DAC for precise control over output voltage.
- Guaranteed monotonicity: Ensures that the output voltage increases monotonically with the digital input code.
- Versatile serial interface: Controlled over three lines (SDIN, SCLK, SYNC) to facilitate opto-isolator applications and daisy-chain configuration.
- Output control on power-up and power-down: The VOUT pin is clamped to 0 V via a low impedance path during power-up and power-down sequences.
- DAC coding: Can be set to straight binary or 2's complement using the BIN/COMP pin.
- Reset to 0 V: The DAC can be reset to 0 V in both unipolar and bipolar output ranges.
Applications
- Industrial process controls: Suitable for precise control and monitoring in industrial environments.
- PC analog I/O boards: Used in computer-based analog input/output systems.
- Instrumentation: Ideal for various instrumentation applications requiring high accuracy and precision.
Q & A
- What is the resolution of the AD7849BR-REEL?
The AD7849BR-REEL has a resolution of 14-bit/16-bit.
- What is the typical settling time of the AD7849BR-REEL?
The typical settling time is 7 μs.
- What types of packages are available for the AD7849BR-REEL?
The component is available in a 20-pin SOIC (Wide) package.
- How is the output voltage controlled during power-up and power-down sequences?
The VOUT pin is clamped to 0 V via a low impedance path during power-up and power-down sequences.
- Can the AD7849BR-REEL be used in daisy-chain configurations?
- What are the input high and low voltage levels for the AD7849BR-REEL?
The input high voltage (VINH) is 2.4 V min, and the input low voltage (VINL) is 0.8 V max.
- What is the maximum input current for the AD7849BR-REEL?
The maximum input current (IINH) is ±10 μA.
- How can the DAC coding be set for the AD7849BR-REEL?
The DAC coding can be set to straight binary or 2's complement using the BIN/COMP pin.
- Can the AD7849BR-REEL be reset to 0 V in both unipolar and bipolar output ranges?
- What are some typical applications of the AD7849BR-REEL?
Typical applications include industrial process controls, PC analog I/O boards, and instrumentation.
