Overview
The AD5620CRMZ-2 is a single, 12-bit nanoDAC (Digital-to-Analog Converter) produced by Analog Devices Inc. It is part of the nanoDAC family, known for its low power consumption and high precision. This device features a buffered voltage output and is guaranteed monotonic by design, ensuring accurate and reliable performance. The AD5620CRMZ-2 includes an internal 2.5 V reference with a 5 ppm/°C temperature coefficient, providing a full-scale output voltage range of 5 V. It operates on a 3 V to 5 V single power supply and is available in an 8-lead MSOP package.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Relative Accuracy | ±6 | LSB | |
| Differential Nonlinearity | ±0.25 | LSB | |
| Zero-Code Error | 2 mV (typ), 8 mV (max) | mV | All 0s loaded to DAC register |
| Offset Error | ±10 mV | mV | |
| Full-Scale Error | ±0.15% FSR (typ), ±0.85% FSR (max) | % FSR | All 1s loaded to DAC register |
| Gain Error | ±1.5% FSR | % FSR | |
| Output Voltage Range | 0 V to VDD | V | |
| Output Voltage Settling Time | 8 µs (typ), 10 µs (max) | µs | ¼ to ¾ scale change settling to ±2 LSB |
| Slew Rate | 1.5 V/µs | V/µs | |
| Power Supply | 3 V to 5 V | V | |
| Power Consumption (Normal Mode) | 0.55 mA (typ), 1 mA (max) | mA | VDD = 4.5 V to 5.5 V |
| Power Consumption (Power-Down Mode) | 480 nA @ 5 V, 200 nA @ 3 V | nA |
Key Features
- Low Power Consumption: The AD5620CRMZ-2 operates with low power, consuming 2.5 mW at 5 V and reducing to 1 μW in power-down mode.
- Internal Reference: Includes an internal 2.5 V reference with a 5 ppm/°C temperature coefficient.
- Buffered Voltage Output: Provides a rail-to-rail output swing, and the output amplifier’s inverting input is available for remote sensing applications.
- Serial Interface: Uses a versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
- Power-On Reset and Power-Down Functions: Ensures the DAC output powers up to 0 V or midscale and remains there until a valid write takes place. The power-down feature reduces current consumption significantly.
- Compact Packaging: Available in an 8-lead MSOP package.
Applications
- Process Control: Suitable for precision control in industrial processes.
- Data Acquisition Systems: Used in systems requiring accurate analog output for data acquisition.
- Portable Battery-Powered Instruments: Ideal for battery-powered devices due to its low power consumption.
- Digital Gain and Offset Adjustment: Useful in applications requiring precise digital adjustment of gain and offset.
- Programmable Voltage and Current Sources: Can be used to create programmable sources for various applications.
- Programmable Attenuators: Suitable for applications requiring programmable attenuation of signals.
Q & A
- What is the resolution of the AD5620CRMZ-2?
The AD5620CRMZ-2 has a resolution of 12 bits.
- What is the internal reference voltage of the AD5620CRMZ-2?
The internal reference voltage is 2.5 V with a 5 ppm/°C temperature coefficient.
- What is the power supply range for the AD5620CRMZ-2?
The device operates on a 3 V to 5 V single power supply.
- What is the typical power consumption of the AD5620CRMZ-2 in normal mode?
The typical power consumption is 0.55 mA at VDD = 4.5 V to 5.5 V.
- How does the power-down feature work?
The power-down feature reduces the current consumption to 480 nA at 5 V and provides software-selectable output loads while in power-down mode.
- What type of serial interface does the AD5620CRMZ-2 use?
The device uses a versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the output voltage range of the AD5620CRMZ-2?
The output voltage range is from 0 V to VDD.
- What is the settling time for the output voltage?
The typical settling time is 8 µs for a ¼ to ¾ scale change settling to ±2 LSB.
- Is the AD5620CRMZ-2 guaranteed monotonic by design?
Yes, the AD5620CRMZ-2 is guaranteed monotonic by design.
- What are some common applications of the AD5620CRMZ-2?
Common applications include process control, data acquisition systems, portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, and programmable attenuators.
