Overview
The AD5621AKSZ-500RL7, manufactured by Analog Devices Inc., is a member of the nanoDAC® family. This device is a single, 12-bit, buffered voltage output digital-to-analog converter (DAC) that operates from a single 2.7 V to 5.5 V supply. It is designed for low power consumption, typically 75 µA at 5 V, making it ideal for portable battery-operated equipment and space-constrained applications. The AD5621AKSZ-500RL7 comes in a compact 6-lead SC70 package and features an on-chip precision output amplifier that allows for rail-to-rail output swing.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Resolution | 12 Bits | ||||
| Power Supply (VDD) | 2.7 | 5.5 | V | ||
| Current Consumption (IDD) | 75 | 100 | µA | VDD = 4.5 V to 5.5 V | |
| Power-Down Current | 0.2 | µA | VDD = 3 V | ||
| Relative Accuracy (INL) | ±6 | LSB | A Version | ||
| Differential Nonlinearity (DNL) | ±0.5 | LSB | |||
| Output Voltage Range | 0 | VDD | V | ||
| Slew Rate | 0.5 | V/µs | |||
| Output Voltage Settling Time | 6 | 10 | µs | Code ¼ scale to ¾ scale | |
| Input High Voltage (VINH) | 1.4 | 1.8 | V | VDD = 2.7 V to 3.6 V / VDD = 4.7 V to 5.5 V | |
| Input Low Voltage (VINL) | 0.6 | 0.8 | V | VDD = 2.7 V to 3.6 V / VDD = 4.7 V to 5.5 V | |
Key Features
- Low Power Consumption: Typically 75 µA at 5 V, with power-down current of 0.2 µA at 3 V.
- Compact Packaging: Available in 6-lead SC70 and LFCSP packages.
- Rail-to-Rail Output: On-chip precision output amplifier allows for rail-to-rail output swing.
- High-Speed Serial Interface: 3-wire serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP interface standards, operating at clock rates up to 30 MHz.
- Power-On Reset and Brownout Detection: Ensures the DAC output powers up to 0 V and remains there until a valid write to the device takes place.
- Software-Selectable Output Loads in Power-Down Mode: Controlled via the serial interface.
- Guaranteed Monotonic by Design: Ensures that the output voltage always increases or remains constant with increasing digital input code.
Applications
- Voltage Level Setting: Ideal for generating bias or control voltages in various applications.
- Portable Battery-Powered Instruments: Suitable due to low power consumption.
- Digital Gain and Offset Adjustment: Can be used in precision analog circuits for gain and offset adjustments.
- Programmable Voltage and Current Sources: Useful in applications requiring programmable output voltages or currents.
- Programmable Attenuators: Can be used in signal processing and transmission systems.
Q & A
- What is the resolution of the AD5621AKSZ-500RL7?
The AD5621AKSZ-500RL7 has a 12-bit resolution.
- What is the power supply range for the AD5621AKSZ-500RL7?
The device operates from a single 2.7 V to 5.5 V supply.
- What is the typical current consumption of the AD5621AKSZ-500RL7 at 5 V?
The typical current consumption is 75 µA at 5 V.
- What is the power-down current consumption of the AD5621AKSZ-500RL7 at 3 V?
The power-down current consumption is typically 0.2 µA at 3 V.
- What type of serial interface does the AD5621AKSZ-500RL7 use?
The device uses a 3-wire serial interface compatible with 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.
- Does the AD5621AKSZ-500RL7 have a power-on reset feature?
Yes, the device includes a power-on reset circuit that ensures the DAC output powers up to 0 V.
- What is the output voltage range of the AD5621AKSZ-500RL7?
The output voltage range is from 0 V to VDD.
- What is the slew rate of the AD5621AKSZ-500RL7?
The slew rate is 0.5 V/µs.
- In what package types is the AD5621AKSZ-500RL7 available?
The device is available in 6-lead SC70 and LFCSP packages.
