Overview
The AD7849CR-REEL, produced by Analog Devices Inc., is a 14-bit/16-bit serial input multiplying digital-to-analog converter (DAC). This component is designed to provide high precision and reliability in digital-to-analog conversion. 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. During power-up and power-down sequences, the output voltage is clamped to 0 V via a low impedance path, ensuring stable operation.
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 |
| Supply Voltage (VDD) | 14.25/15.75 | V | min/max |
| Settling Time | 7 μs | - | - |
| Package Type | 20-pin SOIC (Wide) | - | - |
Key Features
- Guaranteed monotonicity to 14 bits for the A grade and to 16 bits for all other grades over specified temperature ranges.
- Output control on power-up and power-down, with internal or external control options.
- Versatile serial interface with input serial-to-parallel shift register and DAC latch.
- DAC clears to 0 V in both unipolar and bipolar output ranges.
- Support for daisy-chain configuration using the DCEN input and SDOUT output.
- BIN/COMP pin for setting DAC coding (straight binary or 2's complement).
Applications
- Industrial process controls.
- PC analog I/O boards.
- Instrumentation.
Q & A
- What is the resolution of the AD7849CR-REEL?
The AD7849CR-REEL has a resolution of 14-bit/16-bit.
- What is the input high voltage (VINH) for the AD7849CR-REEL?
The input high voltage (VINH) is 2.4 V minimum.
- What is the settling time of the AD7849CR-REEL?
The settling time is 7 μs.
- What package types are available for the AD7849CR-REEL?
The AD7849CR-REEL is available in a 20-pin SOIC (Wide) package.
- How does the AD7849CR-REEL handle power-up and power-down sequences?
During power-up and power-down sequences, the output voltage is clamped to 0 V via a low impedance path.
- What is the purpose of the BIN/COMP pin on the AD7849CR-REEL?
The BIN/COMP pin sets the DAC coding; it can be set to straight binary or 2's complement.
- Can the AD7849CR-REEL be used in daisy-chain configurations?
- What are some typical applications of the AD7849CR-REEL?
Typical applications include industrial process controls, PC analog I/O boards, and instrumentation.
- What is the supply voltage range for the AD7849CR-REEL?
The supply voltage range is 14.25 V to 15.75 V.
- Is the AD7849CR-REEL RoHS compliant?
Yes, the AD7849CR-REEL is RoHS compliant.
