Overview
The AD5303ARU is a dual 8-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Analog Devices Inc. This integrated circuit is designed to operate from a single 2.5 V to 5.5 V power supply and is packaged in a 16-lead Thin Shrink Small Outline Package (TSSOP). The device features two independent DAC channels, each with its own reference input, making it versatile for various applications requiring precise analog voltage output.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 8-bit (per DAC) |
| Number of DACs | 2 |
| Power Supply | 2.5 V to 5.5 V |
| Current Consumption | 300 μA @ 5 V (including reference current) |
| Power-Down Current | 200 nA @ 5 V, 50 nA @ 3 V |
| Output Range | 0 V to VREF or 0 V to 2 VREF |
| Output Buffer | Rail-to-rail output buffer amplifiers |
| Slew Rate | 0.7 V/μs |
| Interface | 3-wire serial interface (compatible with SPI, QSPI, MICROWIRE, DSP) |
| Package | 16-lead TSSOP |
Key Features
- Double-buffered input logic for simultaneous update of DAC outputs via LDAC pin
- Asynchronous CLR facility for resetting outputs to 0 V
- Low power serial interface with Schmitt-triggered inputs
- On-chip rail-to-rail output buffer amplifiers
- Buffered or unbuffered reference input options
- Three programmable power-down modes
- Guaranteed monotonic by design over all codes
- SDO daisy-chaining option
Applications
- Portable battery-powered instruments
- Digital gain and offset adjustment
- Programmable voltage and current sources
- Programmable attenuators
Q & A
- What is the resolution of the AD5303ARU DAC?
The AD5303ARU has a resolution of 8 bits per DAC.
- What is the power supply range for the AD5303ARU?
The AD5303ARU operates from a single 2.5 V to 5.5 V power supply.
- How many DAC channels does the AD5303ARU have?
The AD5303ARU has two independent DAC channels.
- What is the current consumption of the AD5303ARU?
The AD5303ARU consumes 300 μA at 5 V, including reference current.
- What are the power-down modes available for the AD5303ARU?
The AD5303ARU has three programmable power-down modes, allowing one or both DACs to be turned off completely or the output to be pulled low by an on-chip resistor.
- What type of interface does the AD5303ARU use?
The AD5303ARU uses a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards.
- What is the output range of the AD5303ARU?
The output range of the AD5303ARU is 0 V to VREF or 0 V to 2 VREF.
- Does the AD5303ARU have on-chip output buffer amplifiers?
Yes, the AD5303ARU features on-chip rail-to-rail output buffer amplifiers.
- What is the slew rate of the AD5303ARU's output buffer amplifiers?
The slew rate of the output buffer amplifiers is 0.7 V/μs.
- What are some common applications of the AD5303ARU?
Common applications include portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, and programmable attenuators.
