Overview
The AD5322BRMZ-REEL, produced by Analog Devices Inc., is a dual 12-bit buffered voltage output Digital-to-Analog Converter (DAC) designed for high precision and low power consumption. This component operates from a single supply voltage ranging from 2.5 V to 5.5 V and is packaged in a 10-lead MSOP (Micro Small Outline Package). The AD5322 is part of the AD5302/AD5312/AD5322 series, which includes 8-bit, 10-bit, and 12-bit versions, respectively.
The device features on-chip output amplifiers that allow the outputs to swing rail-to-rail, with a slew rate of 0.7 V/μs. It utilizes 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 | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Supply Voltage | 2.5 V to 5.5 V | V | |
| Current Consumption | 230 μA @ 3 V | μA | Typical at 3 V supply |
| Power Consumption | 1.5 mW @ 5 V, 0.7 mW @ 3 V | mW | |
| Power-Down Current | 200 nA @ 5 V, 50 nA @ 3 V | nA | |
| Operating Temperature Range | -40°C to 105°C | °C | |
| Interface | MicroWire, QSPI, Serial, SPI | Compatible with standard interface standards | |
| Slew Rate | 0.7 V/μs | V/μs | |
| Output Voltage Range | 0 V to VREF | V | |
| Package Type | 10-lead MSOP |
Key Features
- Dual 12-bit buffered voltage output DACs in a single package.
- On-chip output amplifiers allowing rail-to-rail output swing with a slew rate of 0.7 V/μs.
- Versatile 3-wire serial interface compatible with SPI, QSPI, MicroWire, and DSP interface standards, operating up to 30 MHz.
- Buffered or unbuffered reference input options.
- Power-on reset circuit ensuring DAC outputs power-up to 0 V.
- Power-down feature reducing current consumption to 200 nA @ 5 V and 50 nA @ 3 V.
- Simultaneous update of DAC outputs via the asynchronous LDAC input.
- Low power consumption, making it suitable for portable battery-operated equipment.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
- Automotive applications due to its qualified temperature range and reliability.
Q & A
- What is the resolution of the AD5322BRMZ-REEL DAC?
The AD5322BRMZ-REEL has a resolution of 12 bits.
- What is the operating supply voltage range for the AD5322BRMZ-REEL?
The operating supply voltage range is from 2.5 V to 5.5 V.
- What is the typical current consumption of the AD5322BRMZ-REEL at 3 V supply?
The typical current consumption is 230 μA at 3 V supply.
- What is the power consumption of the AD5322BRMZ-REEL at 5 V and 3 V supplies?
The power consumption is 1.5 mW at 5 V and 0.7 mW at 3 V.
- How does the power-down feature work on the AD5322BRMZ-REEL?
The power-down feature reduces the current consumption to 200 nA at 5 V and 50 nA at 3 V.
- What type of interface does the AD5322BRMZ-REEL use?
The AD5322BRMZ-REEL uses a versatile 3-wire serial interface compatible with SPI, QSPI, MicroWire, and DSP interface standards.
- What is the slew rate of the output amplifiers in the AD5322BRMZ-REEL?
The slew rate of the output amplifiers is 0.7 V/μs.
- Can the DAC outputs be updated simultaneously on the AD5322BRMZ-REEL?
Yes, the DAC outputs can be updated simultaneously using the asynchronous LDAC input.
- What is the package type of the AD5322BRMZ-REEL?
The package type is a 10-lead MSOP (Micro Small Outline Package).
- Is the AD5322BRMZ-REEL suitable for automotive applications?
Yes, it is qualified for automotive applications due to its operating temperature range and reliability.
