Overview
The DAC8426FSZ, produced by Analog Devices Inc., is a quad 8-bit voltage-output CMOS digital-to-analog converter (DAC) integrated into a single chip. This device features an internal 10V bandgap reference, eliminating the need for an external reference. It is designed to be a pin-for-pin replacement for the PM-7226 and AD7226, making it highly compatible with existing systems. The DAC8426FSZ is known for its compact size, low power consumption, and economical cost-per-channel, making it an attractive option for applications requiring multiple DACs without compromising circuit-board space.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 8 | |
| Number of D/A Converters | 4 | |
| Settling Time | 3 µs (Typ) | |
| Output Type | Voltage - Buffered | |
| Reference Type | Internal 10V Bandgap Reference | |
| Voltage Supply | 13.5 V ~ 16.5 V (Analog and Digital) | V |
| Operating Temperature | -40°C ~ 85°C | °C |
| Package / Case | 20-SOIC (Wide) | |
| INL/DNL | ±1 LSB (Max) | LSB |
| Output Current (Source) | 10 mA | mA |
| Output Current (Sink) | 350 ~ 450 µA | µA |
Key Features
- Internal 10V bandgap reference with ±0.4% accuracy and 25 ppm/°C temperature coefficient, eliminating the need for an external reference.
- Four 8-bit voltage-output CMOS D/A converters on a single chip.
- On-board amplifiers capable of driving up to 10 mA from either a single or dual supply.
- Internal reference with 5 mA available to drive external devices.
- All digital inputs are TTL/CMOS (5 V) compatible.
- Compact size and low power consumption, making it economical and space-efficient.
- Highly stable thin-film R-2R resistor ladder for good matching and temperature tracking between DACs.
Applications
- Process controls and system calibration.
- Op Amp offset and gain adjustment.
- Level and threshold setting in multichannel microprocessor-controlled systems.
- Any application requiring multiple D/A converters without sacrificing circuit-board space.
Q & A
- What is the resolution of the DAC8426FSZ?
The DAC8426FSZ has a resolution of 8 bits.
- How many D/A converters are integrated into the DAC8426FSZ?
The DAC8426FSZ contains four 8-bit voltage-output D/A converters.
- What is the settling time of the DAC8426FSZ?
The settling time is typically 3 µs.
- What type of reference does the DAC8426FSZ use?
The DAC8426FSZ uses an internal 10V bandgap reference.
- What is the operating temperature range of the DAC8426FSZ?
The operating temperature range is -40°C to 85°C.
- What is the package type of the DAC8426FSZ?
The package type is 20-SOIC (Wide).
- What is the maximum output current (source) of the DAC8426FSZ?
The maximum output current (source) is 10 mA.
- Is the DAC8426FSZ compatible with TTL/CMOS digital inputs?
Yes, all digital inputs are TTL/CMOS (5 V) compatible.
- What are some typical applications of the DAC8426FSZ?
Typical applications include process controls, system calibration, Op Amp offset and gain adjustment, and level and threshold setting in multichannel microprocessor-controlled systems.
- Does the DAC8426FSZ have built-in amplifiers?
Yes, the DAC8426FSZ has on-board amplifiers that can drive up to 10 mA from either a single or dual supply.
