Overview
The AD7849BR is a 14-bit/16-bit serial input multiplying digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This component is designed to provide high precision and versatility in various applications. 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. The device features a versatile serial interface and can operate with both internal and external control for output management during power-up and power-down sequences.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Bits | 14/16 | - | - |
| Settling Time | 10 µs | - | Typical |
| Output Type | Voltage - Buffered | - | - |
| Differential Output | No | - | - |
| Data Interface | SPI | - | - |
| Reference Type | External | - | - |
| INL/DNL (LSB) | ±16 (Max), ±0.9 (Max) | - | - |
| Operating Temperature | -40°C ~ 85°C | - | - |
| Voltage - Supply, Analog | ±14.25 V ~ 15.75 V | - | - |
| Voltage - Supply, Digital | 5 V | - | - |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | - | - |
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 SPI compatibility.
- DAC clears to 0 V in both unipolar and bipolar output ranges.
- Excellent differential linearity performance.
- Low impedance path to clamp VOUT to 0 V during power-up and power-down sequences.
Applications
- Industrial process controls.
- PC analog I/O boards.
- Instrumentation.
Q & A
- What is the resolution of the AD7849BR DAC?
The AD7849BR is available in both 14-bit and 16-bit resolutions.
- What is the typical settling time of the AD7849BR?
The typical settling time is 10 µs.
- What type of output does the AD7849BR provide?
The output is a voltage-buffered type.
- Does the AD7849BR support differential output?
No, it does not support differential output.
- What is the data interface used by the AD7849BR?
The data interface is SPI (Serial Peripheral Interface).
- What is the reference type for the AD7849BR?
The reference type is external.
- What are the INL/DNL specifications for the AD7849BR?
The INL/DNL specifications are ±16 (Max) and ±0.9 (Max) LSB.
- What is the operating temperature range for the AD7849BR?
The operating temperature range is -40°C to 85°C.
- What are the voltage supply requirements for the AD7849BR?
The analog supply voltage is ±14.25 V to ±15.75 V, and the digital supply voltage is 5 V.
- In what package is the AD7849BR available?
The AD7849BR is available in a 20-SOIC package.
