Overview
The AD7303BRZ, produced by Analog Devices Inc., is a dual, 8-bit voltage output Digital-to-Analog Converter (DAC) designed for a wide range of applications. This device operates from a single supply voltage of +2.7 V to +5.5 V, making it suitable for battery-powered and portable equipment. The AD7303 features on-chip precision output buffers that allow the DAC outputs to swing rail-to-rail, ensuring high accuracy and reliability. The device is available in an 8-lead SOIC package, among others, and is known for its low power consumption and versatile serial interface compatibility.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Number of Bits | 8 | - | Dual 8-bit DACs |
| Number of D/A Converters | 2 | - | Dual DACs in one package |
| Supply Voltage | +2.7 V to +5.5 V | V | Analog and Digital Supply |
| Output Type | Voltage - Buffered | - | Rail-to-rail operation |
| Settling Time | 2 µs | µs | Typical settling time |
| Data Interface | SPI, QSPI, Microwire | - | Three-wire serial interface |
| Reference Type | Internal, External | - | Selectable reference |
| Operating Temperature | -40°C to +105°C | °C | - |
| Power Consumption | 7.5 mW max at 3 V, < 3 µW in full power-down | mW, µW | Low power operation |
| Package | 8-lead SOIC | - | - |
Key Features
- Dual 8-bit voltage output DACs in a single package.
- Operates from a single +2.7 V to +5.5 V supply.
- On-chip precision output buffers for rail-to-rail operation.
- Three-wire serial interface compatible with SPI, QSPI, and Microwire standards.
- Internal or external reference capability.
- Individual power-down function for each DAC.
- Low power consumption: 7.5 mW max at 3 V, reducing to less than 3 µW in full power-down mode.
- High-speed serial interface with clock rates up to 30 MHz.
- Available in 8-pin DIP, SOIC, and microSOIC packages.
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 AD7303BRZ?
The AD7303BRZ operates from a single supply voltage of +2.7 V to +5.5 V.
- How many DACs are included in the AD7303BRZ?
The AD7303BRZ includes two 8-bit DACs in a single package.
- What types of serial interfaces are supported by the AD7303BRZ?
The device supports SPI, QSPI, and Microwire serial interface standards.
- What is the settling time of the AD7303BRZ?
The settling time is typically 2 µs.
- Can the AD7303BRZ use both internal and external references?
- What is the power consumption of the AD7303BRZ in full power-down mode?
In full power-down mode, the power consumption is less than 3 µW.
- What are the available package options for the AD7303BRZ?
The device is available in 8-pin DIP, SOIC, and microSOIC packages.
- What is the operating temperature range of the AD7303BRZ?
The operating temperature range is -40°C to +105°C.
- Is the AD7303BRZ suitable for battery-powered applications?
- Can each DAC be powered down individually?
