Overview
The AD5640CRMZ-2REEL7, 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). This device is known for its high precision and low power consumption, making it suitable for a variety of applications. The AD5640 features an on-chip 1.25 V or 2.5 V reference with a 5 ppm/°C temperature coefficient, ensuring stable output voltage ranges of 2.5 V or 5 V respectively. The device is available in an 8-lead MSOP package and operates on a single 3 V to 5.5 V power supply.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 14 | Bits | |
| Relative Accuracy | ±8 to ±4 | LSB | A, B, C Grades respectively |
| Differential Nonlinearity | ±0.5 to ±1 | LSB | A, B, C Grades respectively |
| Output Voltage Range | 0 to VDD | V | |
| Output Voltage Settling Time | 8 to 10 | µs | Typical and maximum values for ¼ to ¾ scale change |
| Slew Rate | 1.5 | V/µs | Typical |
| Power Supply | 3 V to 5.5 V | V | Single power supply |
| Power Consumption (Normal Mode) | 0.55 to 1 mA | mA | Typical and maximum values at VDD = 4.5 V to 5.5 V |
| Power Consumption (Power-Down Mode) | 0.48 to 1 µA | µA | Typical and maximum values at VDD = 4.5 V to 5.5 V |
Key Features
- Low power consumption: Power-down to 480 nA at 5 V and 200 nA at 3 V
- On-chip reference: 1.25 V or 2.5 V with 5 ppm/°C temperature coefficient
- Guaranteed monotonic by design: Ensures accurate and reliable output
- Power-on reset: Ensures DAC output powers up to 0 V or midscale
- Three power-down functions: Allows for software-selectable output loads while in power-down mode
- Rail-to-rail operation: Precision output amplifier allows full output voltage range
- Serial interface: Compatible with SPI, QSPI, MICROWIRE, and DSP interface standards up to 30 MHz clock rates
- Tiny 8-lead MSOP package: Compact design for space-constrained applications
Applications
- Process control: Precise voltage output for control systems
- Data acquisition systems: High accuracy and stability for data conversion
- Portable battery-powered instruments: Low power consumption ideal for battery-powered devices
- Digital gain and offset adjustment: Precise voltage adjustment for various applications
- Programmable voltage and current sources: Flexible and accurate voltage and current output
- Programmable attenuators: Precise attenuation control in signal processing
Q & A
- What is the resolution of the AD5640CRMZ-2REEL7?
The AD5640CRMZ-2REEL7 has a resolution of 14 bits
- What is the typical power consumption of the AD5640 in normal mode?
The typical power consumption is 0.55 mA at VDD = 4.5 V to 5.5 V
- What is the power-down current consumption of the AD5640?
The power-down current consumption is typically 0.48 µA at VDD = 4.5 V to 5.5 V
- What is the output voltage range of the AD5640?
The output voltage range is from 0 to VDD, depending on the reference voltage used
- What types of packages are available for the AD5640?
The AD5640 is available in 8-lead SOT-23 and MSOP packages
- What is the temperature coefficient of the on-chip reference?
The on-chip reference has a temperature coefficient of 5 ppm/°C
- Does the AD5640 have a power-on reset feature?
Yes, the AD5640 has a power-on reset feature that ensures the DAC output powers up to 0 V or midscale
- What is the maximum clock rate for the serial interface of the AD5640?
The serial interface operates at clock rates up to 30 MHz
- Is the AD5640 suitable for remote sensing applications?
Yes, the AD5640 is suitable for remote sensing applications due to its rail-to-rail output swing and available inverting input
- What are some common applications of the AD5640?
Common applications include process control, data acquisition systems, portable battery-powered instruments, digital gain and offset adjustment, and programmable voltage and current sources
