Overview
The AD7849CR is a 14-bit/16-bit serial input multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is designed to provide excellent differential linearity performance and guaranteed monotonicity to 14 bits for the A grade and to 16 bits for all other grades over specified temperature ranges. The AD7849CR features a versatile serial interface and can operate in both unipolar and bipolar output ranges, making it suitable for a variety of applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Bits | 14/16 | - | - |
| Settling Time | 10 µs (Typ) | µs | - |
| Data Interface | SPI | - | - |
| Output Type | Voltage - Buffered | - | - |
| Differential Output | No | - | - |
| Reference Type | External | - | - |
| Operating Temperature | -40°C ~ 85°C | °C | - |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | - | - |
| Voltage - Supply, Analog | ±14.25 V ~ 15.75 V | V | - |
| Voltage - Supply, Digital | 5 V | V | - |
| INL/DNL (LSB) | ±8 (Max), ±0.5 (Max) | LSB | - |
Key Features
- Guaranteed monotonicity to 14 bits for the A grade and to 16 bits for all other grades over specified temperature ranges.
- Excellent differential linearity performance.
- Versatile serial interface compatible with SPI.
- Output control on power-up and power-down with internal or external control options.
- DAC clears to 0 V in both unipolar and bipolar output ranges.
- String DAC architecture.
Applications
- Industrial process controls.
- PC analog I/O boards.
- Instrumentation.
Q & A
- What is the resolution of the AD7849CR DAC?
The AD7849CR is available in both 14-bit and 16-bit resolutions. - What is the typical settling time of the AD7849CR?
The typical settling time is 10 µs. - What type of data interface does the AD7849CR use?
The AD7849CR uses an SPI (Serial Peripheral Interface) data interface. - What is the operating temperature range of the AD7849CR?
The operating temperature range is -40°C to 85°C. - What is the package type of the AD7849CR?
The package type is 20-SOIC (0.295", 7.50mm Width). - What are the analog and digital supply voltage ranges for the AD7849CR?
The analog supply voltage range is ±14.25 V to ±15.75 V, and the digital supply voltage is 5 V. - Does the AD7849CR have differential output capability?
No, the AD7849CR does not have differential output capability. - What is the reference type for the AD7849CR?
The reference type is external. - What are the INL/DNL specifications for the AD7849CR?
The INL/DNL specifications are ±8 (Max) and ±0.5 (Max) LSB. - In what applications is the AD7849CR commonly used?
The AD7849CR is commonly used in industrial process controls, PC analog I/O boards, and instrumentation.
