Overview
The AD5312BRMZ is a dual 10-bit buffered voltage output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component is part of the AD5302/AD5312/AD5322 series, which offers high precision and versatility in various applications. The AD5312 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 power-sensitive designs.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Bits | 10 | - | Dual DACs |
| Supply Voltage | 2.5 V to 5.5 V | V | Analog and Digital |
| Current Consumption | 230 μA @ 3 V | μA | Active mode |
| Power-down Current | 200 nA @ 5 V, 50 nA @ 3 V | nA | Power-down mode |
| Output Type | Voltage - Buffered | - | Rail-to-rail output |
| Settling Time | 9 μs | μs | ¼ Scale to ¾ Scale Change |
| Slew Rate | 0.7 V/μs | V/μs | - |
| INL/DNL | ±0.5 LSB / ±0.05 LSB | LSB | Integral and Differential Nonlinearity |
| Operating Temperature | -40°C to +105°C | °C | - |
| Data Interface | SPI, QSPI, MICROWIRE, DSP | - | Up to 30 MHz clock rate |
Key Features
- Dual 10-bit Buffered Voltage Output DACs: The AD5312 features two independent 10-bit DACs in a single package, providing high precision and flexibility.
- Low Power Consumption: The device operates with a low current consumption of 230 μA at 3 V and can power down to 200 nA at 5 V or 50 nA at 3 V.
- Rail-to-Rail Output: The on-chip output amplifiers allow the outputs to swing rail-to-rail with a slew rate of 0.7 V/μs.
- Versatile Serial Interface: The device uses a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating at clock rates up to 30 MHz.
- Guaranteed Monotonicity: The DACs are guaranteed monotonic by design over all codes.
- Power-on-Reset and Simultaneous Update: The device features power-on-reset to 0 V and simultaneous update of DAC outputs via the LDAC pin.
Applications
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption and high precision.
- Digital Gain and Offset Adjustment: Useful in applications where precise voltage adjustments are necessary.
- Programmable Voltage and Current Sources: Can be used to generate precise voltage or current outputs.
- Programmable Attenuators: Suitable for applications requiring adjustable signal attenuation.
- Automotive Applications: Qualified for use in automotive environments due to its wide operating temperature range.
Q & A
- What is the resolution of the AD5312 DAC?
The AD5312 is a dual 10-bit DAC.
- What is the supply voltage range for the AD5312?
The AD5312 operates from a single supply voltage ranging from 2.5 V to 5.5 V.
- How much current does the AD5312 consume?
The device consumes 230 μA at 3 V in active mode and can power down to 200 nA at 5 V or 50 nA at 3 V.
- What type of output does the AD5312 provide?
The AD5312 provides buffered voltage output.
- What is the settling time of the AD5312?
The settling time is 9 μs for a ¼ scale to ¾ scale change.
- What is the slew rate of the AD5312's output amplifiers?
The slew rate is 0.7 V/μs.
- Is the AD5312 guaranteed to be monotonic?
Yes, the DACs are guaranteed monotonic by design over all codes.
- What types of serial interfaces does the AD5312 support?
The device supports SPI, QSPI, MICROWIRE, and DSP interfaces.
- What is the maximum clock rate for the serial interface?
The serial interface operates at clock rates up to 30 MHz.
- Is the AD5312 suitable for automotive applications?
Yes, it is qualified for automotive applications due to its wide operating temperature range of -40°C to +105°C.
