Overview
The AD5662BRJZ-2REEL7, produced by Analog Devices Inc., is a low-power, single, 16-bit buffered voltage-out Digital-to-Analog Converter (DAC) that is part of the nanoDAC family. This device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. It features a versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz. The AD5662 includes a power-on reset circuit and a power-down feature that significantly reduces current consumption, making it ideal for portable battery-operated equipment.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | All digital inputs at 0 V or VDD | |
| Resolution | 16 | 16 | 16 | Bits | |
| Relative Accuracy | ±8 | ±32 | LSB | See Figure 4 | |
| Differential Nonlinearity | ±1 | ±1 | ±1 | LSB | Guaranteed monotonic by design |
| Zero Code Error | 2 | 10 | mV | All 0s loaded to DAC register | |
| Full-Scale Error | -0.2 | -1 | % FSR | All 1s loaded to DAC register | |
| Offset Error | ±10 | ±10 | ±10 | mV | |
| Gain Error | ±1.5 | ±1.5 | ±1.5 | % FSR | |
| Power Consumption (Normal Mode) | 0.75 mW | mW | VDD = 5 V | ||
| Power Consumption (Power-Down Mode) | 2.4 μW | μW | VDD = 5 V | ||
| Power-Up Time | 4 | 4 | 4 | μs | Coming out of power-down mode, VDD = 5 V |
Key Features
- Low Power Consumption: The AD5662 consumes 0.75 mW at 5 V and reduces to 2.4 μW in power-down mode, making it suitable for battery-operated devices.
- High Precision: Guaranteed 16-bit monotonic by design with high accuracy and low differential nonlinearity.
- Versatile Interface: Compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
- Rail-to-Rail Output: The on-chip precision output amplifier allows for rail-to-rail output swing.
- Power-On Reset and Power-Down: Ensures the DAC output powers up to 0 V or midscale and reduces current consumption in power-down mode.
- External Reference Voltage: Requires an external reference voltage to set the output range of the DAC.
Applications
- Process Control: Suitable for precise control in industrial processes.
- Data Acquisition Systems: Ideal for systems requiring high accuracy and low power consumption.
- Portable Battery-Powered Instruments: Low power consumption makes it perfect for handheld and portable devices.
- Digital Gain and Offset Adjustment: Can be used for adjusting gain and offset in various electronic systems.
- Programmable Voltage and Current Sources: Useful in applications requiring programmable voltage and current outputs).
- Programmable Attenuators: Can be used in applications needing precise attenuation control).
Q & A
- What is the supply voltage range of the AD5662?
The AD5662 operates from a single 2.7 V to 5.5 V supply).
- What is the resolution of the AD5662?
The AD5662 has a 16-bit resolution).
- What interface standards is the AD5662 compatible with?
The AD5662 is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards).
- What is the power consumption of the AD5662 in normal mode?
The power consumption is 0.75 mW at 5 V).
- What is the power consumption of the AD5662 in power-down mode?
The power consumption reduces to 2.4 μW in power-down mode).
- Does the AD5662 require an external reference voltage?
Yes, the AD5662 requires an external reference voltage to set the output range of the DAC).
- What is the temperature range of the AD5662?
The temperature range is −40°C to +125°C).
- Is the AD5662 suitable for automotive applications?
Yes, the AD5662 is qualified for automotive applications).
- What is the power-up time of the AD5662?
The power-up time is 4 μs coming out of power-down mode).
- Does the AD5662 have a rail-to-rail output capability?
Yes, the on-chip precision output amplifier allows for rail-to-rail output swing).
