Overview
The AD7564BRS, produced by Analog Devices Inc., is a quad 12-bit digital-to-analog converter (DAC) integrated into a single monolithic device. This component is designed to operate from a single +3.3 V to +5 V supply, making it versatile for various applications. The AD7564 features four standard current output DACs, each with separate VREF, IOUT1, IOUT2, and RFB terminals. The device is optimized for low power consumption, with typical power dissipation of 50 µW at 5 V and 33 µW at 3.3 V. It also includes a fast and versatile serial interface compatible with modern microprocessors and microcomputers.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Bits | Resolution of each DAC | 12-bit |
| Number of D/A Converters | Number of DACs in the device | 4 |
| Settling Time | Typical settling time for the DACs | 550 µs |
| Output Type | Type of output from the DACs | Current - Unbuffered |
| Differential Output | Availability of differential output | Yes |
| Data Interface | Type of data interface used | SPI |
| Reference Type | Type of reference input | External |
| Voltage Supply (Analog) | Analog voltage supply range | +3.3 V to +5 V |
| Voltage Supply (Digital) | Digital voltage supply range | +3.3 V to +5 V |
| INL/DNL (LSB) | Integral and differential non-linearity | ±0.5 (Max), ±0.5 (Max) |
| Architecture | Internal architecture of the DACs | R-2R |
| Operating Temperature | Operating temperature range | -40°C to +85°C |
Key Features
- Four 12-Bit DACs in One Package: The AD7564 integrates four 12-bit DACs, each with separate VREF inputs, into a single device.
- Single Supply Operation: The device can operate from a single +3.3 V to +5 V supply, enhancing its versatility in various applications.
- Simultaneous Update Capability: All DACs can be updated simultaneously using the asynchronous LDAC input, and they can be cleared by asserting the asynchronous CLR input.
- Fast and Versatile Serial Interface: The device features a serial interface compatible with modern 3 V and 5 V microprocessors and microcomputers.
- Low Power Consumption: The AD7564 has low power dissipation, typically 50 µW at 5 V and 33 µW at 3.3 V.
- Multiple Package Options: The device is available in 28-pin SOIC, SSOP, and DIP packages.
Applications
- Process Control: Suitable for applications requiring precise control over analog outputs in industrial processes.
- Portable Instrumentation: Ideal for portable instruments due to its low power consumption and compact packaging.
- General Purpose Test Equipment: Can be used in various test and measurement equipment where multiple DACs are required.
Q & A
- What is the resolution of each DAC in the AD7564BRS?
Each DAC in the AD7564BRS has a 12-bit resolution.
- What is the operating voltage range for the AD7564BRS?
The AD7564BRS operates from a single +3.3 V to +5 V supply.
- How many DACs are integrated into the AD7564BRS?
The AD7564BRS integrates four 12-bit DACs.
- What type of data interface does the AD7564BRS use?
The AD7564BRS uses a SPI (Serial Peripheral Interface) for data communication.
- Can the DACs in the AD7564BRS be updated simultaneously?
Yes, all DACs can be updated simultaneously using the asynchronous LDAC input.
- What is the typical settling time for the DACs in the AD7564BRS?
The typical settling time for the DACs is 550 µs.
- What is the operating temperature range for the AD7564BRS?
The operating temperature range is -40°C to +85°C.
- What type of output does the AD7564BRS provide?
The AD7564BRS provides unbuffered current output.
- Is the AD7564BRS available in different package options?
Yes, it is available in 28-pin SOIC, SSOP, and DIP packages.
- What is the typical power consumption of the AD7564BRS?
The typical power consumption is 50 µW at 5 V and 33 µW at 3.3 V.
