Overview
The AD5662WARMZ-1REEL7, 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 power-on reset circuit that ensures the DAC output powers up to 0 V or to midscale, depending on the model, and remains there until a valid write takes place. The AD5662 is highly suited for portable battery-operated equipment due to its low power consumption, which is 0.75 mW at 5 V and reduces to 2.4 μW in power-down mode.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| 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 | 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 | mV | ||
| Gain Error | ±1.5 | ±1.5 | % FSR | ||
| Power Consumption (Normal Mode) | 0.75 | mW | VDD = 5 V | ||
| Power Consumption (Power-Down Mode) | 2.4 | μW | VDD = 5 V | ||
| Reference Input Range | 0.75 VDD | 0.75 VDD | V | ||
| Reference Input Impedance | 125 | 125 | kΩ |
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 ideal for portable battery-operated equipment.
- Guaranteed Monotonic by Design: Ensures that the DAC output is always monotonic, which is crucial for many applications.
- Power-On Reset and Power-Down Feature: The device includes a power-on reset circuit and a power-down feature that reduces current consumption to 480 nA at 5 V.
- Rail-to-Rail Output Swing: The on-chip precision output amplifier allows for rail-to-rail output swing, enhancing the device's versatility.
- Versatile Serial Interface: The 3-wire serial interface is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards and operates at clock rates up to 30 MHz.
- External Reference Voltage: The device requires an external reference voltage to set the output range of the DAC.
Applications
- Process Control: Suitable for precision control in industrial processes.
- Data Acquisition Systems: Ideal for systems that require high accuracy and low power consumption.
- Portable Battery-Powered Instruments: The low power consumption makes it perfect for battery-operated 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 or current outputs).
- Programmable Attenuators: Can be utilized in systems that need adjustable attenuation).
Q & A
- What is the resolution of the AD5662 DAC?
The AD5662 has a resolution of 16 bits.
- What is the operating voltage range of the AD5662?
The AD5662 operates from a single 2.7 V to 5.5 V supply).
- 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 have a power-on reset feature?
Yes, the AD5662 includes a power-on reset circuit that ensures the DAC output powers up to 0 V or to midscale).
- What type of serial interface does the AD5662 use?
The AD5662 uses a versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards).
- What is the maximum clock rate of the serial interface?
The serial interface operates at clock rates up to 30 MHz).
- Is the AD5662 suitable for automotive applications?
Yes, the AD5662WARMZ-1REEL7 model is qualified for automotive applications).
- What is the temperature range of the AD5662?
The AD5662 operates over a temperature range of −40°C to +125°C).
- Does the AD5662 require an external reference voltage?
Yes, the AD5662 requires an external reference voltage to set the output range of the DAC).
