Overview
The AD5643RBRMZ-5, produced by Analog Devices Inc., is a member of the nanoDAC® family. It is a low-power, dual 14-bit buffered voltage-out digital-to-analog converter (DAC) designed for high precision and low power consumption. This device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. The AD5643RBRMZ-5 features an on-chip reference with a 2.5 V, 5 ppm/°C specification, providing a full-scale output of 5 V. The device also includes a power-on reset circuit and a power-down feature that reduces current consumption to 480 nA at 5 V, making it suitable for battery-operated equipment.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14 Bits |
| Relative Accuracy | ±4 LSB |
| Differential Nonlinearity (DNL) | ±0.5 LSB |
| Integral Nonlinearity (INL) | ±4 LSB |
| Zero-Scale Error | +2 to +10 mV |
| Offset Error | ±1 to ±10 mV |
| Full-Scale Error | −0.1 to ±1% of FSR |
| Gain Error | ±1.5% of FSR |
| Supply Voltage | 2.7 V to 5.5 V |
| Power Consumption (Normal Operation) | Low power, typically 5 mW |
| Power-Down Current | 480 nA at 5 V |
| Interface | 3-wire serial (SPI, QSPI, MICROWIRE, DSP compatible) |
| Clock Rate | Up to 50 MHz |
| Package | 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) |
| Operating Temperature | −40°C to +105°C |
Key Features
- Low Power Consumption: The device operates with low power, typically 5 mW, and a power-down feature that reduces current consumption to 480 nA at 5 V.
- On-Chip Reference: Features a 2.5 V, 5 ppm/°C on-chip reference, allowing for a full-scale output of 5 V. The internal reference can be turned off to use an external reference.
- Guaranteed Monotonicity: Ensures that the DAC output is always monotonic, which is crucial for many precision applications.
- High Precision Output Amplifier: The on-chip precision output amplifier enables rail-to-rail output swing.
- Versatile Interface: Supports 3-wire serial interfaces compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating at clock rates up to 50 MHz.
- Power-On Reset: Ensures the DAC output powers up to 0 V and remains there until a valid write takes place.
Applications
- Portable and Battery-Operated Equipment: The low power consumption makes it ideal for use in portable and battery-operated devices.
- Precision Instrumentation: Suitable for applications requiring high precision and low noise, such as in test and measurement equipment.
- Industrial Control Systems: Can be used in industrial control systems where precise analog output is necessary.
- Medical Devices: Applicable in medical devices that require accurate and reliable analog output.
Q & A
- What is the resolution of the AD5643RBRMZ-5?
The AD5643RBRMZ-5 has a resolution of 14 bits.
- What is the supply voltage range for the AD5643RBRMZ-5?
The device operates from a single 2.7 V to 5.5 V supply.
- What is the power consumption of the AD5643RBRMZ-5 in normal operation?
The device typically consumes 5 mW in normal operation.
- What is the power-down current of the AD5643RBRMZ-5?
The power-down current is 480 nA at 5 V.
- What type of interface does the AD5643RBRMZ-5 support?
The device supports a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards.
- What is the clock rate of the AD5643RBRMZ-5?
The device operates at clock rates up to 50 MHz.
- Does the AD5643RBRMZ-5 have an on-chip reference?
Yes, it features a 2.5 V, 5 ppm/°C on-chip reference.
- What is the operating temperature range of the AD5643RBRMZ-5?
The operating temperature range is −40°C to +105°C.
- Is the AD5643RBRMZ-5 guaranteed monotonic?
Yes, the device is guaranteed monotonic by design.
- What is the package type of the AD5643RBRMZ-5?
The device is available in 10-TFSOP and 10-MSOP packages.
