Overview
The AD5620BRJZ-2500RL7, produced by Analog Devices Inc., is a member of the nanoDAC™ family of devices. It is a low-power, single, 12-bit, buffered voltage-out digital-to-analog converter (DAC). This device is known for its high precision and is guaranteed monotonic by design. The AD5620 features an internal 2.5 V, 5 ppm/°C reference, providing a full-scale output voltage range of 5 V. The device includes a power-on reset circuit and a power-down feature that significantly reduces current consumption to 480 nA at 5 V, making it suitable for power-sensitive applications.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Relative Accuracy | ±6 (A Grade), ±1 (B/C Grade) | LSB | |
| Differential Nonlinearity | ±0.25 | LSB | |
| Zero-Code Error | 2 mV (typ), 10 mV (max) | mV | All 0s loaded to DAC register |
| Offset Error | ±10 mV | mV | |
| Full-Scale Error | −0.15% (typ), ±1% (max) FSR | % FSR | All 1s loaded to DAC register |
| Gain Error | ±1.5% FSR | % FSR | |
| Output Voltage Range | 0 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 | ¼ to ¾ scale |
| Capacitive Load Stability | 2 nF (typ), 10 nF (typ) with RL = 2 kΩ | nF | |
| Output Noise Spectral Density | 80 nV/√Hz | nV/√Hz | DAC code = midscale, 10 kHz |
| Power Consumption | 2.5 mW at 5 V, 1 µW in power-down mode | mW/µW |
Key Features
- Low Power Consumption: The AD5620 operates at 2.5 mW at 5 V and reduces to 1 µW in power-down mode, making it suitable for battery-powered devices.
- Internal Reference: The device includes an internal 2.5 V, 5 ppm/°C reference, which is available at the VREFOUT pin.
- Power-On Reset and Power-Down: The DAC output powers up to 0 V and remains there until a valid write takes place. The power-down feature reduces current consumption significantly.
- High Precision Output Amplifier: The on-chip precision output amplifier allows for rail-to-rail output swing and is suitable for remote sensing applications.
- Versatile Serial Interface: The device uses a 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
Applications
- Industrial Control Systems: The AD5620 is suitable for applications requiring precise analog output in industrial control systems.
- Medical Devices: Its high precision and low power consumption make it ideal for medical devices that require accurate analog signals.
- Aerospace and Defense: The device's robust specifications and reliability make it a good fit for aerospace and defense applications.
- Automotive Systems: The AD5620 can be used in automotive systems that require precise analog output and low power consumption.
Q & A
- What is the resolution of the AD5620BRJZ-2500RL7?
The AD5620BRJZ-2500RL7 has a resolution of 12 bits.
- What is the full-scale output voltage range of the AD5620BRJZ-2500RL7?
The full-scale output voltage range is 5 V, thanks to the internal 2.5 V, 5 ppm/°C reference.
- What is the power consumption of the AD5620BRJZ-2500RL7 in normal and power-down modes?
The device consumes 2.5 mW at 5 V in normal mode and reduces to 1 µW in power-down mode.
- Does the AD5620BRJZ-2500RL7 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 type of serial interface does the AD5620BRJZ-2500RL7 use?
The device uses a versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the slew rate of the AD5620BRJZ-2500RL7?
The slew rate is 1.5 V/µs for a ¼ to ¾ scale change.
- Is the AD5620BRJZ-2500RL7 guaranteed monotonic by design?
Yes, the device is guaranteed monotonic by design.
- What is the output voltage settling time of the AD5620BRJZ-2500RL7?
The output voltage settling time is 8 µs (typ) and 10 µs (max) for a ¼ to ¾ scale change settling to ±2 LSB.
- What is the capacitive load stability of the AD5620BRJZ-2500RL7?
The capacitive load stability is 2 nF (typ) with RL = ∞ and 10 nF (typ) with RL = 2 kΩ.
- What is the output noise spectral density of the AD5620BRJZ-2500RL7?
The output noise spectral density is 80 nV/√Hz at DAC code = midscale, 10 kHz.
