Overview
The DAC7512N/250, produced by Texas Instruments, is a low-power, single, 12-bit buffered voltage output Digital-to-Analog Converter (DAC). It features an on-chip precision output amplifier that allows for rail-to-rail output swing, making it highly versatile for various applications. The DAC7512 uses a three-wire serial interface compatible with standard SPI, QSPI, Microwire, and DSP interfaces, operating at clock rates up to 30MHz. This device is particularly suited for portable battery-operated equipment due to its low power consumption, with a typical current draw of 135µA at 5V and as low as 50nA in power-down mode at 5V.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Output Type | Buffered Voltage Output |
| Power Supply | +2.7V to +5.5V |
| Power Consumption (Normal Operation) | 135µA at 5V, 0.7mW at 5V |
| Power Consumption (Power-Down Mode) | 200nA at 5V, 50nA at 3V, 1µW at 5V |
| Serial Interface | Three-wire serial interface, compatible with SPI, QSPI, Microwire, and DSP interfaces |
| Serial Clock Rate | Up to 30MHz |
| Output Amplifier | On-chip precision output amplifier, rail-to-rail operation |
| Power-On Reset | Reset to 0V |
| Power-Down Functions | Three power-down modes |
| Package Options | SOT23-6 and MSOP-8 |
Key Features
- Low-power operation with microPOWER consumption: 135µA at 5V and 50nA in power-down mode at 5V.
- Rail-to-rail output swing due to the on-chip precision output amplifier.
- Three-wire serial interface compatible with SPI, QSPI, Microwire, and DSP interfaces, operating up to 30MHz.
- Power-on reset to 0V and three power-down functions accessible via the serial interface.
- Low power serial interface with Schmitt-triggered inputs.
- SYNC interrupt facility for controlling write sequences.
Applications
- Portable battery-powered instruments due to its low power consumption.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
Q & A
- What is the resolution of the DAC7512N/250?
The DAC7512N/250 has a 12-bit resolution.
- What is the typical power consumption of the DAC7512N/250 in normal operation?
The typical power consumption is 135µA at 5V, which translates to 0.7mW at 5V.
- How low can the power consumption go in power-down mode?
In power-down mode, the current consumption can be as low as 50nA at 5V and 1µW at 5V.
- What types of serial interfaces is the DAC7512N/250 compatible with?
The DAC7512N/250 is compatible with SPI, QSPI, Microwire, and DSP interfaces.
- What is the maximum serial clock rate for the DAC7512N/250?
The maximum serial clock rate is up to 30MHz.
- Does the DAC7512N/250 have a power-on reset feature?
- How many power-down functions does the DAC7512N/250 have?
The DAC7512N/250 has three power-down functions accessible via the serial interface.
- In what packages is the DAC7512N/250 available?
The DAC7512N/250 is available in SOT23-6 and MSOP-8 packages.
- What are some typical applications for the DAC7512N/250?
Typical applications include portable battery-powered instruments, digital gain and offset adjustment, and programmable voltage and current sources).
- Does the DAC7512N/250 have an on-chip output buffer amplifier?
