Overview
The AD7305BRU-REEL7 is a quad, 8-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component operates from a single +3 V to +5 V supply or ±5 V supplies, making it versatile for various applications. The AD7305 features a parallel interface and internal precision buffers that swing rail-to-rail, allowing for full-scale output voltages determined by the external reference input voltage. The device is known for its low power consumption and high precision, making it suitable for applications requiring accurate analog output control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Power Consumption (3 V supply) | < 9 mW | mW |
| Resolution | 8-bit | - |
| Output Voltage Range | VSS to VDD | V |
| Reference Input Range | VSS to VDD | V |
| Input Resistance (at code = 0x55) | 7.5 kΩ (typ) | kΩ |
| Input Capacitance | 5 pF (typ) | pF |
| Output Current Drive | ±3 mA (typ) | mA |
| Shutdown Resistance | 120 kΩ (typ) | kΩ |
| Logic Input Low Voltage | 0.6 V (min) | V |
| Capacitive Load | 200 pF (max) | pF |
Key Features
- Parallel Interface: The AD7305 uses a standard address decode along with the WR control line to load data into the input registers.
- 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.
- Rail-to-Rail Output: Internal precision buffers swing rail-to-rail, enabling full-scale output voltages determined by the external reference input voltage.
- Low Power Consumption: Consumes less than 9 mW from a 3 V supply.
- High Precision: Ensures accurate analog output control with minimal error.
- Power-On Reset: Sets the output to zero scale upon power-on.
- Shutdown Mode: Places DAC outputs in a high impedance state, reducing power consumption.
Applications
- Automotive Systems: Suitable for applications requiring precise analog output control in automotive environments.
- Instrumentation: Used in digitally controlled calibration and measurement instruments.
- Industrial Control Systems: Ideal for systems that require accurate and reliable analog output signals.
Q & A
- What is the supply voltage range for the AD7305BRU-REEL7? The supply voltage range is from 2.7 V to 5.5 V.
- What is the resolution of the AD7305BRU-REEL7? The resolution is 8-bit.
- How does the AD7305BRU-REEL7 interface with other components? It uses a parallel interface with standard address decode and WR control line.
- What is the power consumption of the AD7305BRU-REEL7 from a 3 V supply? It consumes less than 9 mW.
- What is the output voltage range of the AD7305BRU-REEL7? The output voltage range is from VSS to VDD.
- How does the double-buffered architecture work in the AD7305BRU-REEL7? It allows all four input registers to be preloaded with new values, which are then updated to the DAC registers via an LDAC control strobe.
- What is the shutdown resistance of the AD7305BRU-REEL7? The shutdown resistance is 120 kΩ (typ).
- Can the AD7305BRU-REEL7 operate in a high-temperature environment? Yes, it is guaranteed to operate over a specified temperature range, though specific details should be checked in the datasheet.
- What are some common applications of the AD7305BRU-REEL7? It is commonly used in automotive systems, instrumentation, and industrial control systems.
- Does the AD7305BRU-REEL7 have a power-on reset feature? Yes, it has an internal power-on reset that sets the output to zero scale.
