Overview
The AD5322ARMZ is a dual 12-bit buffered voltage output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component 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-operated equipment. The AD5322 features on-chip output amplifiers that allow the outputs to swing rail-to-rail with a slew rate of 0.7 V/μs. It also includes a power-on reset circuit and a power-down feature to minimize current consumption.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Power Supply | 2.5 V to 5.5 V | V | Analog and Digital |
| Current Consumption | 230 μA @ 3 V | μA | Typical at 3 V |
| Power-Down Current | 200 nA @ 5 V, 50 nA @ 3 V | nA | |
| Output Voltage Range | 0 V to VREF | V | |
| Slew Rate | 0.7 V/μs | V/μs | |
| Settling Time | 8 μs to 10 μs | μs | ¼ Scale to ¾ Scale Change |
| Interface | SPI, QSPI, MicroWire, DSP | Up to 30 MHz clock rate | |
| Operating Temperature Range | -40°C to +105°C | °C | Industrial |
| Package | 10-lead MSOP |
Key Features
- Dual 12-bit buffered voltage output DACs in a single package.
- On-chip rail-to-rail output buffer amplifiers.
- Power-on reset circuit ensuring DAC outputs power-up to 0 V.
- Power-down feature reducing current consumption to 200 nA at 5 V (50 nA at 3 V).
- Guaranteed monotonic by design over all codes.
- Buffered or unbuffered reference input options.
- Simultaneous update of DAC outputs via LDAC input.
- Low power serial interface with Schmitt-triggered inputs.
- Qualified for automotive applications.
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 AD5322ARMZ DAC?
The AD5322ARMZ has a resolution of 12 bits.
- What is the power supply range for the AD5322ARMZ?
The AD5322ARMZ operates from a single power supply ranging from 2.5 V to 5.5 V.
- What is the typical current consumption of the AD5322ARMZ at 3 V?
The typical current consumption is 230 μA at 3 V.
- How does the power-down feature work on the AD5322ARMZ?
The power-down feature reduces the current consumption to 200 nA at 5 V (50 nA at 3 V).
- What is the slew rate of the AD5322ARMZ output amplifiers?
The slew rate is 0.7 V/μs.
- What interfaces are supported by the AD5322ARMZ?
The AD5322ARMZ supports SPI, QSPI, MicroWire, and DSP interfaces up to 30 MHz clock rate.
- What is the operating temperature range of the AD5322ARMZ?
The operating temperature range is -40°C to +105°C.
- What package type is the AD5322ARMZ available in?
The AD5322ARMZ is available in a 10-lead MSOP package.
- Is the AD5322ARMZ qualified for automotive applications?
Yes, the AD5322ARMZ is qualified for automotive applications.
- What is the settling time of the AD5322ARMZ?
The settling time is typically 8 μs to 10 μs for a ¼ scale to ¾ scale change.
