Overview
The AD5449YRUZ is a dual 12-bit, high bandwidth, multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. This CMOS device is part of the AD5429/AD5439/AD5449 family, which includes 8-, 10-, and 12-bit versions, respectively. The AD5449 operates from a 2.5 V to 5.5 V power supply, making it suitable for battery-powered and other low-voltage applications. It is manufactured on a CMOS submicron process, offering excellent 4-quadrant multiplication characteristics and large signal multiplying bandwidths of up to 10 MHz.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Resolution | 12 Bits | ||
| Number of D/A Converters | 2 | ||
| Settling Time | 120 ns | ||
| Output Type | Current - Unbuffered | ||
| Differential Output | Yes | ||
| Data Interface | SPI, DSP | ||
| Reference Type | External | ||
| Voltage - Supply, Analog/Digital | 2.5 V ~ 5.5 V | V | |
| INL/DNL (LSB) | ±1 (Max), -1/+2 (Max) | LSB | |
| Architecture | R-2R | ||
| Operating Temperature | -40°C ~ 125°C | °C | |
| Package | 16-Lead TSSOP |
Key Features
- Dual 12-bit, high bandwidth, multiplying DAC with a serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP interface standards.
- Operates from a 2.5 V to 5.5 V power supply, suitable for battery-powered applications.
- Excellent 4-quadrant multiplication characteristics with large signal multiplying bandwidths of up to 10 MHz.
- Integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output when combined with an external current-to-voltage precision amplifier.
- Double-buffered, 3-wire serial interface and serial data out (SDO) pin for daisy-chaining multiple packages.
- Data readback function to read the contents of the DAC register via the SDO pin.
- Guaranteed monotonic and low power consumption (typical current consumption of 0.5 μA).
Applications
- Portable battery-powered applications.
- Waveform generators.
- Analog processing and instrumentation applications.
- Programmable amplifiers and attenuators.
- Digitally controlled calibration.
- Programmable filters and oscillators.
- Composite video and ultrasound applications.
- Gain, offset, and voltage trimming.
Q & A
- What is the resolution of the AD5449YRUZ DAC?
The AD5449YRUZ has a resolution of 12 bits.
- What is the operating voltage range of the AD5449YRUZ?
The AD5449YRUZ operates from a 2.5 V to 5.5 V power supply.
- What type of interface does the AD5449YRUZ use?
The AD5449YRUZ uses a double-buffered, 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP interface standards.
- What is the settling time of the AD5449YRUZ?
The settling time of the AD5449YRUZ is 120 ns.
- Does the AD5449YRUZ support daisy-chaining?
Yes, the AD5449YRUZ supports daisy-chaining through its serial data out (SDO) pin.
- What is the operating temperature range of the AD5449YRUZ?
The operating temperature range of the AD5449YRUZ is -40°C to 125°C.
- What type of output does the AD5449YRUZ provide?
The AD5449YRUZ provides an unbuffered current output.
- Is the AD5449YRUZ guaranteed to be monotonic?
Yes, the AD5449YRUZ is guaranteed to be monotonic.
- What is the typical current consumption of the AD5449YRUZ?
The typical current consumption of the AD5449YRUZ is 0.5 μA.
- What package type is the AD5449YRUZ available in?
The AD5449YRUZ is available in a 16-lead TSSOP package.
