Overview
The AD5640CRMZ-2, produced by Analog Devices Inc., is a member of the nanoDAC family of devices. It is a low-power, single 14-bit, buffered voltage-out digital-to-analog converter (DAC) that is guaranteed monotonic by design. This device features an internal 2.5 V, 5 ppm/°C reference, providing a full-scale output voltage range of 5 V. The AD5640CRMZ-2 is available in an 8-lead MSOP package and operates over a temperature range of -40°C to 105°C. It is designed for applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 14 | Bits | |
| Relative Accuracy | ±4 (Max), ±0.5 (Max) | LSB | |
| Differential Nonlinearity (DNL) | ±0.5 (Max) | LSB | |
| Zero-Code Error | ±9 (Max) | mV | All 0s loaded to DAC register |
| Offset Error | ±9 (Max) | mV | |
| Full-Scale Error | ±0.15% (Typ), ±0.85% (Max) | FSR | All 1s loaded to DAC register |
| Gain Error | ±0.85% (Max) | FSR | |
| Output Voltage Range | 0 to VDD | V | |
| Output Voltage Settling Time | 10 µs (Typ), 10 µs (Max) | µs | ¼ to ¾ scale change settling to ±2 LSB |
| Slew Rate | 1.5 V/µs (Typ) | V/µs | |
| Power Supply | 5 V | V | Analog and Digital |
| Power Consumption | 2.5 mW (Typ), 1 µW (Power-down) | mW, µW | At 5 V, in power-down mode |
| Operating Temperature | -40°C to 105°C | °C | |
| Package | 8-Lead MSOP |
Key Features
- Low Power Consumption: The AD5640CRMZ-2 has a power consumption of 2.5 mW at 5 V and reduces to 1 µW in power-down mode.
- Internal Reference: Features an internal 2.5 V, 5 ppm/°C reference, providing a full-scale output voltage range of 5 V.
- High Precision: Guaranteed monotonic by design with ±4 LSB max differential nonlinearity and ±0.5 LSB max relative accuracy.
- Versatile Interface: Uses a 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: Includes a power-on reset circuit to ensure the DAC output powers up to 0 V and a power-down feature that reduces current consumption to 480 nA at 5 V.
- Rail-to-Rail Output: On-chip precision output amplifier allows rail-to-rail output swing.
Applications
- Process Control: Suitable for precise control in industrial processes.
- Data Acquisition Systems: Ideal for high-precision data acquisition applications.
- Portable Battery-Powered Instruments: Low power consumption makes it suitable for battery-powered devices.
- Digital Gain and Offset Adjustment: Can be used for adjusting gain and offset in various circuits.
- Programmable Voltage and Current Sources: Can be configured as programmable voltage or current sources.
- Programmable Attenuators: Useful in applications requiring programmable attenuation.
Q & A
- What is the resolution of the AD5640CRMZ-2?
The AD5640CRMZ-2 has a resolution of 14 bits.
- What is the full-scale output voltage range of the AD5640CRMZ-2?
The full-scale output voltage range is 5 V, provided by an internal 2.5 V, 5 ppm/°C reference.
- What is the power consumption of the AD5640CRMZ-2?
The power consumption is 2.5 mW at 5 V and reduces to 1 µW in power-down mode.
- What type of interface does the AD5640CRMZ-2 use?
The AD5640CRMZ-2 uses a 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the operating temperature range of the AD5640CRMZ-2?
The operating temperature range is -40°C to 105°C.
- What is the package type of the AD5640CRMZ-2?
The AD5640CRMZ-2 is available in an 8-lead MSOP package.
- Does the AD5640CRMZ-2 have a power-on reset feature?
Yes, it includes a power-on reset circuit to ensure the DAC output powers up to 0 V.
- What is the settling time of the AD5640CRMZ-2?
The output voltage settling time is 10 µs (typ) for a ¼ to ¾ scale change settling to ±2 LSB.
- Is the AD5640CRMZ-2 suitable for battery-powered devices?
Yes, its low power consumption makes it suitable for battery-powered instruments.
- What are some common applications of the AD5640CRMZ-2?
Common applications include process control, data acquisition systems, digital gain and offset adjustment, and programmable voltage and current sources.
