Overview
The DAC8426FS is a quad 8-bit voltage-output CMOS Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component integrates four independent DACs on a single chip, each with an 8-bit resolution. It features an internal 10 V bandgap reference, eliminating the need for an external reference voltage. The DAC8426FS is designed for applications requiring multiple DACs without compromising on circuit-board space, thanks to its compact size and low power consumption.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Bits | Resolution of each DAC | 8 bits |
| Number of D/A Converters | Number of independent DACs on the chip | 4 |
| Settling Time | Typical settling time for the DACs | 3 μs (Typ) |
| Output Type | Type of output provided by the DACs | Voltage - Buffered |
| Data Interface | Type of data interface used | Parallel |
| Reference Type | Type of reference used | Internal 10 V bandgap reference |
| Voltage Supply | Analog and digital supply voltage range | 13.5 V ~ 16.5 V |
| Operating Temperature | Operating temperature range | -40°C ~ 85°C |
| Package / Case | Package type and dimensions | 20-SOIC (0.295", 7.50mm Width) |
| INL/DNL (LSB) | Integral and differential nonlinearity | ±1 LSB (Max) |
| Architecture | Resistor ladder architecture | R-2R |
Key Features
- Internal Reference: The DAC8426FS includes an internal 10 V bandgap reference, which eliminates the need for an external reference voltage and offers a 25 ppm/°C temperature coefficient and 5 mA of external load driving capability.
- Compact Design: The component is designed to be compact, reducing circuit-board space requirements while providing multiple DACs on a single chip.
- Low Power Consumption: It operates with low power, making it economical and suitable for various applications.
- TTL/CMOS Compatibility: All digital inputs are TTL/CMOS (5 V) compatible, ensuring versatility in system integration.
- High Stability: The use of Analog Devices' advanced oxide-based, silicon-gate, CMOS process and highly stable thin-film R-2R resistor ladder ensures good matching and temperature tracking between DACs.
Applications
- Process Controls: Suitable for process control systems that require multiple analog outputs.
- Multichannel Microprocessor Controlled Systems: Ideal for systems that need multiple DACs controlled by a microprocessor.
- System Calibration: Used for calibration of various system parameters such as op-amp offset and gain adjustment.
- Level and Threshold Setting: Can be used to set levels and thresholds in various industrial and automotive applications.
Q & A
- What is the resolution of each DAC in the DAC8426FS?
Each DAC in the DAC8426FS has an 8-bit resolution.
- How many independent DACs are integrated on the DAC8426FS chip?
The DAC8426FS integrates four independent DACs on a single chip.
- What is the typical settling time for the DACs in the DAC8426FS?
The typical settling time for the DACs is 3 μs.
- Does the DAC8426FS require an external reference voltage?
No, the DAC8426FS includes an internal 10 V bandgap reference, eliminating the need for an external reference voltage.
- What is the operating temperature range of the DAC8426FS?
The operating temperature range is -40°C to 85°C.
- What type of package does the DAC8426FS come in?
The DAC8426FS comes in a 20-SOIC (0.295", 7.50mm Width) package.
- What is the supply voltage range for the DAC8426FS?
The supply voltage range is 13.5 V to 16.5 V for both analog and digital supplies.
- Are the digital inputs of the DAC8426FS TTL/CMOS compatible?
- What is the architecture of the resistor ladder in the DAC8426FS?
The resistor ladder architecture is R-2R.
- What are some common applications of the DAC8426FS?
