Overview
The AD7302BR-REEL7, 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 component operates from a single supply voltage of +2.7 V to +5.5 V, making it suitable for battery-powered and low-power systems. The AD7302 features on-chip precision output buffers that allow the DAC outputs to swing rail-to-rail, ensuring high accuracy and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | +2.7 V to +5.5 V |
| Number of Bits | 8-bit |
| Number of DACs | 2 |
| Output Type | Voltage Output |
| Output Range | Rail-to-Rail |
| Settling Time | Typically 1.2 μs |
| Power Consumption | < 10 mW at 3.3 V, 3 μW in power-down mode |
| Package Types | 20-Lead PDIP, 20-Lead SOIC, 20-Lead TSSOP |
| Interface | Parallel microprocessor and DSP-compatible interface |
| Reference Selection | Internal or external reference capability |
| Power-Down Mode | Active low input (PD) to reduce current consumption to < 1 μA |
Key Features
- Low power, single supply operation from +2.7 V to +5.5 V.
- On-chip precision output buffer amplifiers allowing rail-to-rail output swing.
- High speed parallel interface compatible with microprocessors and DSPs.
- Double buffered interface logic for simultaneous updating of DAC outputs.
- Internal or external reference capability.
- Power-down function reducing current consumption to less than 1 μA.
- Asynchronous LDAC and CLR inputs for updating and clearing DAC outputs.
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 of the AD7302BR-REEL7? The AD7302BR-REEL7 operates from a single supply voltage of +2.7 V to +5.5 V.
- How many bits does the AD7302BR-REEL7 DAC have? The AD7302BR-REEL7 is an 8-bit DAC.
- What is the output type of the AD7302BR-REEL7? The output type is voltage output.
- What is the settling time of the AD7302BR-REEL7? The settling time is typically 1.2 μs.
- How much power does the AD7302BR-REEL7 consume? The power consumption is less than 10 mW at 3.3 V, reducing to 3 μW in power-down mode.
- What are the available package types for the AD7302BR-REEL7? The available package types are 20-Lead PDIP, 20-Lead SOIC, and 20-Lead TSSOP.
- What kind of interface does the AD7302BR-REEL7 have? The AD7302BR-REEL7 has a parallel microprocessor and DSP-compatible interface.
- Can the AD7302BR-REEL7 use an external reference? Yes, the AD7302BR-REEL7 has internal or external reference capability.
- How does the power-down mode work on the AD7302BR-REEL7? The power-down mode is activated by an active low input (PD), reducing current consumption to less than 1 μA.
- What is the purpose of the LDAC and CLR inputs on the AD7302BR-REEL7? The LDAC input is used to update the DAC outputs simultaneously, and the CLR input is used to clear the DAC registers and outputs to zero volts.
