Overview
The AD5338ARMZ-1, produced by Analog Devices Inc., is a dual 10-bit buffered voltage output Digital-to-Analog Converter (DAC). This component is part of the AD5337/AD5338/AD5339 family, each offering different resolution levels. The AD5338 specifically provides two 10-bit DACs, making it suitable for applications requiring precise voltage output control.
It operates from a single 2.5 V to 5.5 V supply, consuming a low current of 250 μA at 3 V, which makes it ideal for battery-powered and portable devices. The device is housed in an 8-lead MSOP package, ensuring a compact footprint for various applications.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 10 | Bits | |
| Relative Accuracy | ±0.5 | LSB | |
| Differential Nonlinearity | ±0.05 | LSB | |
| Offset Error | ±0.4 | % of FSR | |
| Gain Error | ±0.15 | % of FSR | |
| Power Supply Range | 2.5 V to 5.5 V | ||
| Current Consumption | 250 μA @ 3 V, 300 μA @ 5 V | ||
| Power-Down Current | 80 nA @ 3 V, 200 nA @ 5 V | ||
| Interface | 2-Wire (I2C-compatible) | ||
| Output Voltage Settling Time | 7 μs | 1/4 scale to 3/4 scale change (0x100 to 0x300) | |
| Slew Rate | 0.7 V/μs | ||
| Temperature Range | −40°C to +105°C |
Key Features
- Dual 10-Bit DACs: Provides two independent 10-bit DACs for precise voltage output control.
- Low Power Operation: Consumes 250 μA at 3 V and 300 μA at 5 V, with power-down modes reducing current to 80 nA @ 3 V and 200 nA @ 5 V.
- 2-Wire Interface: I2C-compatible serial interface with clock rates up to 400 kHz.
- On-Chip Output Amplifiers: Rail-to-rail output swing with a slew rate of 0.7 V/μs.
- Simultaneous Update: Outputs can be updated simultaneously using the LDAC function.
- Power-On Reset and Software Clear: Ensures DAC outputs power up to 0 V and can be reset to 0 V via software.
- Guaranteed Monotonicity: Guaranteed monotonic by design over all codes.
Applications
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption.
- Digital Gain and Offset Adjustment: Useful in applications needing precise voltage adjustments.
- Programmable Voltage and Current Sources: Can be used to generate precise voltage or current outputs.
- Programmable Attenuators: Suitable for applications requiring adjustable attenuation levels.
- Industrial Process Control: Used in industrial settings for precise control over processes.
Q & A
- What is the resolution of the AD5338ARMZ-1 DAC?
The AD5338ARMZ-1 has a resolution of 10 bits.
- What is the power supply range for the AD5338ARMZ-1?
The power supply range is from 2.5 V to 5.5 V.
- What is the current consumption of the AD5338ARMZ-1 at 3 V and 5 V?
The current consumption is 250 μA at 3 V and 300 μA at 5 V.
- What is the interface type used by the AD5338ARMZ-1?
The interface is 2-Wire (I2C-compatible).
- What is the slew rate of the on-chip output amplifiers?
The slew rate is 0.7 V/μs.
- Can the outputs of the AD5338ARMZ-1 be updated simultaneously?
- What is the power-on reset behavior of the AD5338ARMZ-1?
The DAC outputs power up to 0 V and remain there until a valid write to the device takes place.
- What is the temperature range for the AD5338ARMZ-1?
The temperature range is −40°C to +105°C.
- What are some common applications of the AD5338ARMZ-1?
Common applications include portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, programmable attenuators, and industrial process control.
- How does the power-down feature of the AD5338ARMZ-1 work?
The power-down feature reduces the current consumption to 80 nA @ 3 V and 200 nA @ 5 V.
