Overview
The DAC7513E/2K5 from Texas Instruments is a low-power, single, 12-bit buffered voltage output Digital-to-Analog Converter (DAC). It is designed for applications requiring high precision and low power consumption, making it ideal for portable battery-operated equipment. The DAC features an on-chip precision output amplifier that allows for rail-to-rail operation and ensures monotonic behavior by design. With a power consumption of 0.5mW at 5V and reducing to 1µW in power-down mode, this DAC is highly efficient.
Key Specifications
| Parameter | Description | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | Number of bits | 12 | - | - | Bits |
| Power Supply | Voltage range | 2.7 | - | 5.5 | V |
| Current Consumption (Normal Mode) | At VDD = 3.6V to 5.5V | 115 | - | 170 | µA |
| Current Consumption (Power-Down Mode) | At VDD = 3.6V to 5.5V | 0.2 | - | 1 | µA |
| Settling Time | To 1LSB | 10 | - | - | µs |
| Serial Clock Frequency | Maximum frequency | - | - | 30 | MHz |
| Operating Temperature Range | Specified performance range | -40 | - | 105 | °C |
| Package Types | Available packages | SOT23-8, MSOP-8 | - | - | - |
Key Features
- Low-power operation: 115µA at 5V and 1µW in power-down mode.
- Power-on reset to zero voltage output.
- On-chip output buffer amplifier with rail-to-rail operation.
- Ensured monotonic by design.
- Low-power serial interface with Schmitt-triggered inputs.
- SYNC interrupt facility.
- Four programmable power-down modes.
- Compatible with SPI, QSPI, and Microwire interface standards.
Applications
The DAC7513E/2K5 is suitable for a variety of applications, including:
- Portable battery-operated equipment due to its low power consumption.
- Systems requiring high precision and low noise, such as medical devices and industrial control systems.
- Bipolar output configurations using external amplifiers like the OPA703.
- Use with precision voltage references like the REF02 for noisy or non-standard power supplies.
Q & A
- What is the resolution of the DAC7513E/2K5?
The DAC7513E/2K5 has a resolution of 12 bits.
- What is the power supply voltage range for the DAC7513E/2K5?
The power supply voltage range is from 2.7V to 5.5V.
- What is the typical current consumption of the DAC7513E/2K5 in normal operation?
The typical current consumption is 115µA at 5V.
- What is the settling time of the DAC7513E/2K5?
The settling time is 10µs to 1LSB.
- What serial interface standards is the DAC7513E/2K5 compatible with?
The DAC7513E/2K5 is compatible with SPI, QSPI, and Microwire interface standards.
- What are the available package types for the DAC7513E/2K5?
The DAC7513E/2K5 is available in SOT23-8 and MSOP-8 packages.
- How does the power-on reset feature work in the DAC7513E/2K5?
The DAC7513E/2K5 has a power-on reset circuit that sets the output voltage to 0V during power-up until a valid write sequence is made.
- What are the power-down modes available in the DAC7513E/2K5?
The DAC7513E/2K5 has four programmable power-down modes, including output 1kΩ to GND, output 100kΩ to GND, and high-Z modes.
- Can the DAC7513E/2K5 be used in bipolar output configurations?
- What is the maximum serial clock frequency for the DAC7513E/2K5?
The maximum serial clock frequency is 30MHz.
