Overview
The AD7305BRU, produced by Analog Devices Inc., is a quad 8-bit digital-to-analog converter (DAC) that operates from a single +3 V to +5 V supply or ±5 V supplies. This component features a parallel interface and is designed for applications requiring multiple DAC channels in a compact package. The AD7305 is known for its rail-to-rail output swing and internal precision buffers, allowing for flexible voltage output configurations. It also includes an internal power-on reset and a low-power shutdown feature, making it suitable for a variety of industrial and automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of D/A Converters | 4 |
| Number of Bits | 8 |
| Supply Voltage Range | +2.7 V to +5.5 V, ±5 V |
| Power Consumption (at +3 V) | < 9 mW |
| Output Type | Voltage - Buffered |
| Settling Time | 2 µs |
| Reference Input Range | VSS to VDD |
| Operating Temperature Range | −40°C to +85°C (Industrial), −40°C to +125°C (Automotive) |
| Package Type | 20-TSSOP, 20-SOIC (Wide) |
| Power Shutdown Current | 40 µA |
Key Features
- Four 8-bit DACs in one package with rail-to-rail output swing.
- Parallel interface for fast data loading and updating of analog output values.
- Internal precision buffers allowing for positive or negative full-scale output voltages.
- Internal power-on reset sets the output to zero scale at turn-on.
- Low-power shutdown feature consuming 40 µA when enabled.
- Compact 20-lead TSSOP and SOIC (Wide) packages.
- Pin-compatible with the AD7226 when operating from less than +5.5 V.
- Double-buffered architecture for simultaneous updating of all four DAC channels.
Applications
- Automotive systems requiring multiple voltage output channels.
- Instrumentation and digitally controlled calibration systems.
- Industrial control systems needing precise analog output control.
- Replacement for AD7226 in applications where VDD is less than 5.5 V.
Q & A
- What is the supply voltage range for the AD7305BRU?
The AD7305BRU operates from a single +3 V to +5 V supply or ±5 V supplies.
- How many DAC channels does the AD7305BRU have?
The AD7305BRU has four 8-bit DAC channels.
- What is the output type of the AD7305BRU?
The output type is voltage-buffered.
- What is the settling time of the AD7305BRU?
The settling time is 2 µs.
- What is the power consumption of the AD7305BRU at +3 V supply?
The power consumption is less than 9 mW.
- Does the AD7305BRU have a power shutdown feature?
Yes, it has a 40 µA power shutdown feature.
- Is the AD7305BRU pin-compatible with any other DACs?
Yes, it is pin-compatible with the AD7226 when operating from less than +5.5 V.
- What are the operating temperature ranges for the AD7305BRU?
The operating temperature ranges are −40°C to +85°C (Industrial) and −40°C to +125°C (Automotive).
- What package types are available for the AD7305BRU?
The available package types are 20-TSSOP and 20-SOIC (Wide).
- How does the double-buffered architecture of the AD7305BRU work?
The double-buffered architecture allows all four input registers to be preloaded with new values, followed by an LDAC control strobe that updates the analog output values.
