Overview
The DAC7562TDSCT from Texas Instruments is a dual, 12-bit, low-power, voltage-output digital-to-analog converter (DAC). This device is part of the DAC756xT family, which includes 12-bit, 14-bit, and 16-bit DACs. The DAC7562T features a 2.5-V, 4-ppm/°C internal reference, providing a full-scale output voltage range of 2.5 V or 5 V. It is designed for low power consumption and high accuracy, making it ideal for portable, battery-operated equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | Bits |
| Relative Accuracy | ±0.3 to ±0.75 | LSB |
| Differential Nonlinearity | ±0.05 to ±0.25 | LSB |
| Offset Error | ±1 to ±4 | mV |
| Full-Scale Error | ±0.03 to ±0.2 | % FSR |
| Zero-Code Error | 1 to 4 | mV |
| Gain Error | ±0.01 to ±0.15 | % FSR |
| Output Voltage Range | 0 to AVDD | V |
| Power Supply Range | 2.7 V to 5.5 V | V |
| Power Consumption (Normal Mode) | 0.54 to 8.8 | mW |
| Power Consumption (Power-Down Mode) | 0.95 to 22 | µW |
| Temperature Range | –40°C to 125°C | °C |
| Package | WSON-10 (3 mm × 3 mm), VSSOP-10 |
Key Features
- Low power consumption: 4 mW at 5-V AVDD and typically 550 nA in power-down mode.
- Internal 2.5-V, 4-ppm/°C reference with an initial accuracy of ±5 mV.
- Bidirectional reference pin: Input or 2.5-V output.
- Monotonic operation with low glitch impulse (0.1 nV-s).
- 50-MHz SPI interface with Schmitt-triggered inputs, compatible with SPI, QSPI, Microwire, and DSP interfaces.
- LDAC and CLR functions for asynchronous or synchronous updates.
- Output buffer with rail-to-rail operation.
- Pin-to-pin compatible with DAC8562 family.
- 5-V TTL I/O enabled.
Applications
The DAC7562T is suitable for various applications requiring high accuracy and low power consumption, such as:
- Portable, battery-operated equipment.
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
Q & A
- What is the resolution of the DAC7562T?
The DAC7562T has a resolution of 12 bits. - What is the internal reference voltage and its temperature drift?
The internal reference voltage is 2.5 V with a temperature drift of 4 ppm/°C. - What is the power consumption of the DAC7562T in normal mode?
The power consumption is typically 4 mW at 5-V AVDD. - What is the operating temperature range of the DAC7562T?
The operating temperature range is –40°C to 125°C. - What types of packages are available for the DAC7562T?
The DAC7562T is available in WSON-10 (3 mm × 3 mm) and VSSOP-10 packages. - Is the DAC7562T compatible with other DAC families?
Yes, it is pin-to-pin compatible with the DAC8562 family. - What is the maximum clock rate of the SPI interface?
The SPI interface operates at clock rates up to 50 MHz. - Does the DAC7562T have power-down features?
Yes, it has a power-down feature that reduces current consumption to typically 550 nA at 5 V. - What is the output voltage range of the DAC7562T?
The output voltage range is 0 to AVDD. - Is the DAC7562T monotonic?
Yes, the DAC7562T is monotonic, providing excellent linearity and minimizing undesired code-to-code transient voltages (glitch).
