Overview
The AD7302BRUZ, produced by Analog Devices Inc., is a dual, 8-bit voltage output Digital-to-Analog Converter (DAC) designed for high-performance applications. It operates from a single supply voltage ranging from +2.7 V to +5.5 V, making it suitable for a variety of power-sensitive applications. The device features on-chip precision output buffers that allow the DAC outputs to swing rail-to-rail, ensuring high accuracy and reliability. The AD7302BRUZ is particularly useful in portable battery-operated equipment due to its low power consumption, which is less than 10 mW at 3.3 V and reduces to 3 µW in power-down mode.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | +2.7 V to +5.5 V |
| Number of Bits | 8-bit |
| Output Type | Voltage Output |
| Settling Time | Typically 1.2 µs |
| Integral Nonlinearity (INL) | 1 LSB |
| Polarity | Unipolar |
| Power Consumption | < 10 mW at 3.3 V, 3 µW in power-down mode |
| Package Type | 20-Lead TSSOP |
| Reference Selection | Internal or External Reference |
Key Features
- Parallel microprocessor and DSP-compatible interface with high-speed registers and double-buffered interface logic.
- On-chip precision output buffers allowing rail-to-rail operation.
- Internal or external reference capability.
- Low power consumption, making it ideal for portable battery-operated equipment.
- Power-down function reducing current consumption to less than 1 µA.
- Asynchronous LDAC input for simultaneous updating of both DACs and asynchronous CLR input for clearing DAC outputs to zero volts.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
Q & A
- What is the supply voltage range for the AD7302BRUZ?
The AD7302BRUZ operates from a single supply voltage ranging from +2.7 V to +5.5 V.
- How many bits does the AD7302BRUZ have?
The AD7302BRUZ is an 8-bit DAC.
- What is the settling time of the AD7302BRUZ?
The settling time is typically 1.2 µs.
- What type of output does the AD7302BRUZ provide?
The AD7302BRUZ provides voltage output.
- Can the AD7302BRUZ use an external reference?
Yes, the AD7302BRUZ can use either an internal or an external reference.
- What is the power consumption of the AD7302BRUZ?
The power consumption is less than 10 mW at 3.3 V and reduces to 3 µW in power-down mode.
- In what package types is the AD7302BRUZ available?
The AD7302BRUZ is available in 20-pin plastic dual-in-line package, 20-lead SOIC, and 20-lead TSSOP package.
- How do you select which DAC to write to in the AD7302BRUZ?
The A/B pin is used to select whether to write to DAC A or DAC B.
- Can both DACs be updated simultaneously in the AD7302BRUZ?
Yes, both DACs can be simultaneously updated using the asynchronous LDAC input.
- How do you clear the DAC outputs to zero volts in the AD7302BRUZ?
The DAC outputs can be cleared to zero volts by using the asynchronous CLR input.
