Overview
The AD7568BSZ-REEL, produced by Analog Devices Inc., is a highly versatile and integrated digital-to-analog converter (DAC) device. It contains eight 12-bit DACs in a single monolithic device, each with standard current output and separate VREF, IOUT1, IOUT2, and RFB terminals. This configuration allows for significant flexibility in configuring the DACs within the same device. The device is controlled via a serial input interface using FSIN, CLKIN, and SDIN, with an address pin (A0) for device addressing in multi-DAC environments. The AD7568 can be simultaneously updated using the asynchronous LDAC input and cleared using the asynchronous CLR input. It is housed in a 44-pin plastic quad flatpack or 44-lead PLCC package, making it space-efficient for various applications.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Number of DACs | 8 | - | - |
| Resolution | 12-bit | - | - |
| Output Type | Current Output | - | Separate VREF, IOUT1, IOUT2, and RFB terminals |
| Input Voltage Range | 4.75 to 5.25 | V | VDD Range |
| Input High Voltage | 2.4 V min | V | VINH |
| Input Low Voltage | 0.8 V max | V | VINL |
| Input Current | ±1 µA max | A | IINH |
| Input Capacitance | 10 pF max | F | CIN |
| Output Leakage Current (IOUT1 @ +25°C) | 10 nA max | A | - |
| Reference Input Resistance | 5 kΩ min to 9 kΩ max | Ω | - |
| Gain Temperature Coefficient | 2 ppm/°C typ, 5 ppm/°C max | ppm/°C | - |
| Output Voltage Settling Time | 500 ns typ | ns | - |
Key Features
- Eight 12-bit DACs in a single monolithic device, each with separate VREF, IOUT1, IOUT2, and RFB terminals.
- Serial input interface using FSIN, CLKIN, and SDIN with an address pin (A0) for multi-DAC environments.
- Asynchronous LDAC and CLR inputs for simultaneous update and clear functions.
- Space-saving 44-pin plastic quad flatpack or 44-lead PLCC package.
- High versatility in configuring DACs within the same device.
- Low output leakage current and high input resistance.
- Low gain temperature coefficient for stable performance over temperature range.
Applications
The AD7568BSZ-REEL is suitable for a variety of applications requiring multiple DACs with high precision and flexibility. These include:
- Industrial control systems where multiple analog outputs are needed.
- Aerospace and defense systems requiring high reliability and precision.
- Medical devices that need multiple analog outputs with low noise and high accuracy.
- Audio and signal processing systems where dynamic range and precision are critical.
- Circuit designs such as filters (high pass, bandpass) where the DACs can control critical parameters like frequency and Q factor.
Q & A
- What is the resolution of the DACs in the AD7568BSZ-REEL?
The DACs in the AD7568BSZ-REEL have a resolution of 12 bits. - How many DACs are included in the AD7568BSZ-REEL?
The AD7568BSZ-REEL includes eight 12-bit DACs. - What is the output type of the DACs in this device?
The DACs in the AD7568BSZ-REEL have current output. - What is the typical gain temperature coefficient of the AD7568BSZ-REEL?
The typical gain temperature coefficient is 2 ppm/°C, with a maximum of 5 ppm/°C. - How are the DACs updated and cleared in the AD7568BSZ-REEL?
The DACs can be simultaneously updated using the asynchronous LDAC input and cleared using the asynchronous CLR input. - What is the recommended amplifier input offset voltage (VOS) for maintaining specified accuracy?
The recommended VOS should be no greater than 500 µV or (50 × 10^–6) × (VREF) over the temperature range of operation. - What are some suitable amplifiers for use with the AD7568BSZ-REEL?
Suitable amplifiers include the AD OP07, AD OP27, OP177, AD711, AD845, or multiple versions of these. - What is the typical output voltage settling time of the AD7568BSZ-REEL?
The typical output voltage settling time is 500 ns. - In what package types is the AD7568BSZ-REEL available?
The AD7568BSZ-REEL is available in a 44-pin plastic quad flatpack or 44-lead PLCC package. - What are some common applications for the AD7568BSZ-REEL?
Common applications include industrial control systems, aerospace and defense systems, medical devices, and audio and signal processing systems.
