Overview
The AD5624BRMZ, produced by Analog Devices Inc., is a member of the nanoDAC® family. It is a low power, quad, 12-bit buffered voltage-out digital-to-analog converter (DAC) designed for high precision and low power consumption. The device operates from a single 2.7 V to 5.5 V supply, making it suitable for portable battery-operated equipment. The AD5624BRMZ features a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. It also includes a power-down feature that significantly reduces current consumption to 480 nA at 5 V, with software-selectable output loads in power-down mode.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 | - | - | Bits | - |
| Relative Accuracy | - | - | ±0.5 LSB | - | - |
| Differential Nonlinearity | - | - | ±0.25 LSB | - | Guaranteed monotonic by design |
| Zero Code Error | - | - | ±10 mV | - | All zeroes loaded to DAC register |
| Offset Error | - | - | ±10 mV | - | - |
| Full-Scale Error | - | - | ±1% of FSR | - | All ones loaded to DAC register |
| Gain Error | - | - | ±1.5% of FSR | - | - |
| VDD | 2.7 | - | 5.5 | V | - |
| Power Consumption (Normal Mode) | - | - | 2.25 mW @ 5 V | - | - |
| Power Consumption (Power-Down Mode) | - | - | 2.4 μW @ 5 V | - | - |
| Output Voltage Range | 0 | - | VDD | V | - |
| DC Output Impedance | - | - | 0.5 Ω | - | - |
| Short-Circuit Current | - | - | 30 mA @ 5 V | - | - |
| Power-Up Time | - | - | 4 μs | - | Coming out of power-down mode; VDD = 5 V |
| Reference Current | 170 | - | 200 μA | - | VREF = VDD = 5.5 V |
| Reference Input Range | 0.75 VDD | - | - | V | - |
| Reference Input Impedance | - | - | 26 kΩ | - | - |
Key Features
- Low Power Consumption: The AD5624BRMZ operates with a power consumption of 2.25 mW at 5 V and reduces to 2.4 μW in power-down mode, making it ideal for battery-operated devices.
- High Precision: The device features a 12-bit resolution with relative accuracy of ±0.5 LSB and differential nonlinearity of ±0.25 LSB, ensuring high precision output.
- Rail-to-Rail Output: The on-chip precision output amplifier allows for rail-to-rail output swing.
- Power-On Reset and Power-Down: The device includes a power-on reset circuit and a power-down feature that reduces current consumption to 480 nA at 5 V.
- Versatile Interface: The AD5624BRMZ uses a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 50 MHz.
- Software-Selectable Output Loads: In power-down mode, the device offers software-selectable output loads.
Applications
- Portable Battery-Powered Instruments: Ideal for devices that require low power consumption and high precision.
- Digital Gain and Offset Adjustment: Suitable for applications requiring precise voltage and current adjustments.
- Programmable Voltage and Current Sources: Can be used in systems that need programmable voltage or current outputs.
- Programmable Attenuators: Useful in applications requiring adjustable attenuation.
- Industrial Process Controls: Applicable in industrial settings where precise analog output is necessary.
Q & A
- What is the resolution of the AD5624BRMZ?
The AD5624BRMZ has a resolution of 12 bits.
- What is the operating voltage range of the AD5624BRMZ?
The device operates from a single 2.7 V to 5.5 V supply.
- What is the power consumption of the AD5624BRMZ in normal mode?
The power consumption is 2.25 mW at 5 V.
- How much current does the AD5624BRMZ consume in power-down mode?
The current consumption in power-down mode is 480 nA at 5 V.
- What type of interface does the AD5624BRMZ 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 50 MHz.
- Does the AD5624BRMZ 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 AD5624BRMZ?
The output voltage range is from 0 V to VDD.
- Is the AD5624BRMZ suitable for battery-operated devices?
Yes, it is ideal for battery-operated devices due to its low power consumption.
- What is the DC output impedance of the AD5624BRMZ?
The DC output impedance is 0.5 Ω.
