Overview
The AD5323ARUZ, produced by Analog Devices Inc., is a dual 12-bit buffered voltage output Digital-to-Analog Converter (DAC) housed in a 16-lead TSSOP package. This device operates from a single power supply ranging from 2.5 V to 5.5 V and is designed for low power consumption, making it suitable for portable battery-powered equipment. The AD5323 features on-chip rail-to-rail output buffer amplifiers, allowing the outputs to swing rail-to-rail with a slew rate of 0.7 V/μs. It also includes a versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| Relative Accuracy (A Version) | ±2 | ±16 | ±2 | LSB | |
| Relative Accuracy (B Version) | ±2 | ±8 | ±2 | LSB | |
| Differential Nonlinearity (A Version) | ±0.2 | ±1 | ±0.2 | LSB | |
| Differential Nonlinearity (B Version) | ±0.2 | ±1 | ±0.2 | LSB | |
| Offset Error | ±0.4 | ±3 | ±0.4 | % of FSR | See Figure 2 and Figure 3 |
| Power Supply Range | 2.5 V | 5.5 V | V | ||
| Current Consumption at 5 V | 300 μA | μA | Including reference current | ||
| Power-Down Current at 5 V | 200 nA | nA | |||
| Power-Down Current at 3 V | 50 nA | nA |
Key Features
- Dual 12-bit buffered voltage output DACs in a 16-lead TSSOP package.
- Operates from a single 2.5 V to 5.5 V power supply.
- Micropower operation: 300 μA at 5 V (including reference current).
- Power-down to 200 nA at 5 V, 50 nA at 3 V.
- Double-buffered input logic.
- Guaranteed monotonic by design over all codes.
- Buffered/unbuffered reference input options.
- Output range: 0 V to VREF or 0 V to 2 VREF.
- Power-on reset to 0 V.
- SDO daisy-chaining option.
- Simultaneous update of DAC outputs via LDAC pin.
- Asynchronous CLR facility.
- Low power serial interface with Schmitt-triggered inputs.
- On-chip rail-to-rail output buffer amplifiers.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
- Qualified for automotive applications.
Q & A
- What is the resolution of the AD5323ARUZ DAC?
The AD5323ARUZ has a resolution of 12 bits.
- What is the power supply range for the AD5323ARUZ?
The AD5323ARUZ operates from a single power supply ranging from 2.5 V to 5.5 V.
- What is the typical current consumption of the AD5323ARUZ at 5 V?
The typical current consumption is 300 μA at 5 V, including reference current.
- How does the power-down feature work on the AD5323ARUZ?
The device reduces current consumption to 200 nA at 5 V and 50 nA at 3 V in power-down mode.
- What interface standards is the AD5323ARUZ compatible with?
The device is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- Can the DAC outputs be updated simultaneously?
Yes, the outputs of both DACs can be updated simultaneously using the asynchronous LDAC input.
- What is the slew rate of the output buffer amplifiers?
The slew rate of the output buffer amplifiers is 0.7 V/μs.
- Does the AD5323ARUZ have a power-on reset feature?
Yes, the device has a power-on reset circuit that ensures the DAC outputs power up to 0 V.
- Can the AD5323ARUZ be used in daisy-chaining applications?
Yes, the device can be used in daisy-chaining applications using the SDO pin.
- What are some common applications of the AD5323ARUZ?
Common applications include portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, and programmable attenuators.
