Overview
The DAC8562SDGST is a 16-bit, dual-channel, low-power, voltage-output digital-to-analog converter (DAC) produced by Texas Instruments. This device is part of the DACxx6x family, which includes the DAC756x, DAC816x, and DAC856x series. The DAC8562 is known for its high accuracy, low power consumption, and versatile interface, making it suitable for a wide range of applications, particularly in portable and battery-operated equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 bits | |
| Relative Accuracy (INL) | ±4 LSB | |
| Glitch Impulse | 0.1 nV-s | |
| Internal Reference Voltage | 2.5 V ± 5 mV | |
| Internal Reference Temperature Drift | 4 ppm/°C (typ), 10 ppm/°C (max) | |
| Output Voltage Range | 0 V to 2.5 V or 5 V | |
| Power Supply Range | 2.7 V to 5.5 V | |
| Power Consumption (Typical) | 4 mW (including internal reference current) | |
| Interface Clock Rate | Up to 50 MHz | |
| Package Type | VSSOP-10 (3 mm × 3 mm) | |
| Operating Temperature Range | –40°C to 125°C |
Key Features
- Low-power, voltage-output DAC with internal 2.5-V reference.
- Monotonic operation ensuring excellent linearity and minimizing code-to-code transient voltages.
- Versatile three-wire serial interface compatible with SPI, QSPI, Microwire, and DSP interfaces.
- Power-on-reset circuit ensuring output powers up at zero scale (DACxx62) or mid-scale (DACxx63).
- Power-down feature reducing current consumption to typically 550 nA at 5 V.
- Output buffer with rail-to-rail operation.
- LDAC and CLR functions for synchronous updates and clearing the DAC register.
Applications
- Portable instrumentation.
- PLC analog output modules.
- Closed-loop servo control.
- Voltage-controlled oscillator tuning.
- Data acquisition systems.
- Programmable gain and offset adjustment.
Q & A
- What is the resolution of the DAC8562?
The DAC8562 has a resolution of 16 bits.
- What is the typical power consumption of the DAC8562?
The typical power consumption is 4 mW, including the internal reference current.
- What is the operating temperature range of the DAC8562?
The operating temperature range is –40°C to 125°C.
- What type of interface does the DAC8562 use?
The DAC8562 uses a versatile three-wire serial interface compatible with SPI, QSPI, Microwire, and DSP interfaces.
- What is the purpose of the power-on-reset circuit in the DAC8562?
The power-on-reset circuit ensures the DAC output powers up at zero scale (DACxx62) or mid-scale (DACxx63) until a valid code is written to the device.
- How does the power-down feature work in the DAC8562?
The power-down feature reduces current consumption to typically 550 nA at 5 V.
- What is the significance of the LDAC and CLR functions in the DAC8562?
The LDAC function allows for synchronous updates, and the CLR function clears the DAC register to zero scale (DACxx62) or mid-scale (DACxx63).
- What is the internal reference voltage and its accuracy?
The internal reference voltage is 2.5 V with an initial accuracy of ±5 mV.
- What is the temperature drift of the internal reference?
The temperature drift of the internal reference is 4 ppm/°C (typical) and 10 ppm/°C (maximum).
- What are some common applications of the DAC8562?
Common applications include portable instrumentation, PLC analog output modules, closed-loop servo control, voltage-controlled oscillator tuning, data acquisition systems, and programmable gain and offset adjustment.
