Overview
The AD5322ARM-REEL7, produced by Analog Devices Inc., is a dual 12-bit buffered voltage output Digital-to-Analog Converter (DAC) packaged in a 10-lead MSOP. This device operates from a single supply voltage ranging from 2.5 V to 5.5 V and consumes a low current of 230 µA at 3 V, making it suitable for portable battery-operated equipment. The AD5322 features on-chip rail-to-rail output buffer amplifiers, ensuring the outputs can swing from 0 V to VREF, and it includes a power-on reset circuit that sets the DAC outputs to 0 V at startup. The device also supports a power-down mode, reducing current consumption to as low as 200 nA at 5 V and 50 nA at 3 V.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 bits | Dual DACs | |
| Supply Voltage | 2.5 V to 5.5 V | V | |
| Current Consumption | 230 µA @ 3 V | µA | Normal operation |
| Power-Down Current | 200 nA @ 5 V, 50 nA @ 3 V | nA | |
| Integral Nonlinearity (INL) | ±2 LSB, ±8 LSB (A and B versions) | LSB | |
| Differential Nonlinearity (DNL) | ±0.2 LSB, ±1 LSB (A and B versions) | LSB | |
| Settling Time | 8 µs to 10 µs | µs | ¼ Scale to ¾ Scale change |
| Slew Rate | 0.7 V/µs | V/µs | |
| Interface | SPI, QSPI, MICROWIRE, DSP | Up to 30 MHz clock rate | |
| Operating Temperature | -40°C to +105°C | °C | |
| Package | 10-lead MSOP |
Key Features
- Dual 12-bit buffered voltage output DACs with rail-to-rail output amplifiers.
- Low power consumption: 1.5 mW at 5 V, 0.7 mW at 3 V, and 1 µW in power-down mode.
- Power-on reset to 0 V and power-down feature with software-selectable output loads.
- Guaranteed monotonic by design over all codes.
- Buffered or unbuffered reference input options.
- Simultaneous update of DAC outputs via asynchronous LDAC input.
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating up to 30 MHz.
- Qualified for automotive applications.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
- Automotive applications.
Q & A
- What is the resolution of the AD5322ARM-REEL7 DAC?
The AD5322ARM-REEL7 has a resolution of 12 bits for each of its dual DACs.
- What is the supply voltage range for the AD5322ARM-REEL7?
The device operates from a single supply voltage ranging from 2.5 V to 5.5 V.
- How much current does the AD5322ARM-REEL7 consume in normal operation?
The device consumes 230 µA at 3 V in normal operation.
- What is the power-down current consumption of the AD5322ARM-REEL7?
In power-down mode, the current consumption is reduced to 200 nA at 5 V and 50 nA at 3 V.
- What is the settling time of the AD5322ARM-REEL7?
The settling time is between 8 µs to 10 µs for a ¼ scale to ¾ scale change.
- What is the slew rate of the AD5322ARM-REEL7?
The slew rate is 0.7 V/µs.
- What interfaces does the AD5322ARM-REEL7 support?
The device supports SPI, QSPI, MICROWIRE, and DSP interfaces with clock rates up to 30 MHz.
- What is the operating temperature range of the AD5322ARM-REEL7?
The operating temperature range is -40°C to +105°C.
- What package type is the AD5322ARM-REEL7 available in?
The device is packaged in a 10-lead MSOP.
- Is the AD5322ARM-REEL7 qualified for automotive applications?
Yes, the AD5322ARM-REEL7 is qualified for automotive applications.
