Overview
The DAC8408FS is a monolithic quad 8-bit multiplying digital-to-analog CMOS converter manufactured by Analog Devices Inc. This device features four independent DACs, each with its own reference input, feedback resistor, and onboard data latches that support read/write operations. The DAC8408FS is designed to operate on a single +5V supply and is compatible with most 8-bit microprocessors, including the 6800, 8080, 8085, and Z80. It is particularly useful in applications requiring self-diagnostics due to its readback function.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | N | - | - | - | 8 Bits | |
| Nonlinearity (INL) | - | - | ±1/4 LSB (A/E/G) | ±1/2 LSB (B/F/H) | - | |
| Differential Nonlinearity (DNL) | - | - | ±1/2 LSB (A/E/G) | ±1 LSB (B/F/H) | - | |
| Gain Error | GFSE | - | - | ±1 LSB | - | |
| Gain Temperature Coefficient | TCGFS | - | ±2 ppm/°C | ±40 ppm/°C | - | |
| Power Supply Voltage | VDD | - | 4.5 V | 5.5 V | V | |
| Supply Current | IDD | TA = +25°C | - | 1.0 mA | - | |
| Supply Current | IDD | Full Temperature Range | - | - | 1.5 mA | |
| Settling Time | - | - | - | 250 ns | - | |
| Operating Temperature | TA | - | -40°C | 85°C | °C | |
| Package | - | - | - | 28-SOIC | - | |
| Output Type | - | - | - | Current - Unbuffered | - |
Key Features
- Quad 8-bit multiplying digital-to-analog CMOS converter with four independent DACs.
- Each DAC has its own reference input, feedback resistor, and onboard data latches with read/write capability.
- Single +5V supply operation.
- Compatibility with most 8-bit microprocessors (e.g., 6800, 8080, 8085, Z80).
- Low power consumption: less than 20 mW.
- Readback function for self-diagnostics.
- High stability and accuracy with guaranteed monotonicity over the full operating temperature range.
Applications
- Voltage set points in automatic test equipment systems requiring data access for self-diagnostics.
- Industrial automation and multichannel microprocessor-controlled systems.
- Digitally controlled op-amp offset adjustment.
- Process control and digital attenuators.
Q & A
- What is the resolution of the DAC8408FS?
The DAC8408FS has a resolution of 8 bits.
- What is the operating voltage range of the DAC8408FS?
The operating voltage range is from 4.5V to 5.5V.
- How many DACs are included in the DAC8408FS?
The DAC8408FS includes four independent DACs.
- What is the settling time of the DAC8408FS?
The settling time is 250 ns.
- Is the DAC8408FS RoHS compliant?
No, the DAC8408FS contains lead and is RoHS non-compliant.
- What is the package type of the DAC8408FS?
The package type is 28-SOIC.
- What is the output type of the DAC8408FS?
The output type is current - unbuffered.
- What is the operating temperature range of the DAC8408FS?
The operating temperature range is from -40°C to 85°C.
- Is the DAC8408FS compatible with microprocessors?
Yes, it is compatible with most 8-bit microprocessors such as the 6800, 8080, 8085, and Z80.
- Does the DAC8408FS support read/write operations?
Yes, each DAC has onboard data latches that support read/write operations.
