Overview
The AD7303BRZ-REEL7 is a dual, 8-bit voltage output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This device operates from a single supply voltage ranging from +2.7 V to +5.5 V and features on-chip precision output buffers that allow the DAC outputs to swing rail to rail. The AD7303 is designed for high-speed applications, utilizing a versatile 3-wire serial interface compatible with SPI, QSPI, microwire, and digital signal processor interface standards.
Key Specifications
| Parameter | Value | Units | Conditions/Comments |
|---|---|---|---|
| Number of Bits | 8 | - | Per DAC |
| Number of D/A Converters | 2 | - | Dual DACs in one package |
| Supply Voltage | +2.7 V to +5.5 V | V | Single supply operation |
| Serial Interface Clock Rate | Up to 30 MHz | Hz | Compatible with SPI, QSPI, microwire, and DSP interfaces |
| Settling Time | Typically 2 µs | s | - |
| Power Consumption | 7.5 mW max at 3 V, < 3 µW in full power-down mode | mW/µW | - |
| Operating Temperature | -40°C to +105°C | °C | - |
| Package Type | 8-pin SOIC | - | Tape & Reel (TR) |
| Reference Type | Internal or External | - | Internal reference derived from VDD/2 or external reference at REF pin |
Key Features
- Dual 8-bit DACs in a single package
- On-chip precision output buffers allowing rail-to-rail output swing
- 3-wire serial interface with clock rates up to 30 MHz, compatible with SPI, QSPI, microwire, and DSP interfaces
- Individual power-down function for each DAC
- Internal and external reference capability
- Low power consumption: 7.5 mW max at 3 V, reducing to less than 3 µW in full power-down mode
- Synchronous loading facility for simultaneous update of DAC outputs using the LDAC function
Applications
The AD7303BRZ-REEL7 is ideally suited for various applications requiring high-speed and low-power digital-to-analog conversion. These include:
- Portable battery-operated equipment due to its low power consumption
- Industrial control systems requiring precise analog output
- Aerospace and defense applications where reliability and precision are critical
- Medical devices that need accurate and stable analog signals
- Automotive systems where robustness and low power are essential
Q & A
- What is the supply voltage range for the AD7303BRZ-REEL7?
The AD7303BRZ-REEL7 operates from a single supply voltage ranging from +2.7 V to +5.5 V.
- How many DACs are included in the AD7303BRZ-REEL7?
The AD7303BRZ-REEL7 includes two 8-bit DACs in a single package.
- What is the maximum clock rate for the serial interface of the AD7303BRZ-REEL7?
The serial interface can operate at clock rates up to 30 MHz.
- Can the AD7303BRZ-REEL7 be powered down individually for each DAC?
- What are the reference options for the AD7303BRZ-REEL7?
The AD7303BRZ-REEL7 can use either an internal reference derived from VDD/2 or an external reference applied at the REF pin.
- What is the typical settling time for the AD7303BRZ-REEL7?
The typical settling time is 2 µs.
- What is the power consumption of the AD7303BRZ-REEL7 in full power-down mode?
In full power-down mode, the power consumption is less than 3 µW.
- What are the package options for the AD7303BRZ-REEL7?
The AD7303BRZ-REEL7 is available in 8-pin SOIC and microSOIC packages.
- What is the operating temperature range for the AD7303BRZ-REEL7?
The operating temperature range is -40°C to +105°C.
- Is the AD7303BRZ-REEL7 suitable for portable battery-operated equipment?
