Overview
The DAC7512N/3K is a low-power, single, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Texas Instruments. It features an on-chip precision output amplifier that allows for rail-to-rail output swing, making it highly versatile for various applications. The DAC7512N/3K is designed for microPOWER operation, consuming only 135µA at 5V, and it includes a power-down feature that reduces current consumption to as low as 50nA at 5V. This makes it ideal for portable battery-operated equipment.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 12 bits |
| Supply Voltage Range | VDD | +2.7V to +5.5V |
| Power Consumption (Normal Mode) | Current at VDD = 5V | 135 µA |
| Power Consumption (Power-Down Mode) | Current at VDD = 5V | 50 nA |
| Output Type | Voltage output | Rail-to-rail |
| Interface | Serial interface type | Compatible with SPI, QSPI, Microwire, and DSP interfaces |
| Clock Rate | Maximum clock rate | Up to 30 MHz |
| Package Types | Available packages | SOT23-6, MSOP-8 |
| Temperature Range | Specified performance range | -40°C to +105°C |
Key Features
- MicroPOWER Operation: Low power consumption of 135µA at 5V and 115µA at 3V.
- Power-Down Feature: Reduces current consumption to 50nA at 5V and 200nA at 3V.
- Rail-to-Rail Output: On-chip precision output amplifier allows for full output swing.
- Power-On Reset: Ensures DAC output powers up at 0V and remains there until a valid write takes place.
- Low Power Serial Interface: Compatible with SPI, QSPI, Microwire, and DSP interfaces with Schmitt-triggered inputs.
- SYNC/Interrupt Facility: Provides synchronization and interrupt capabilities.
- Three Power-Down Functions: Allows for different power-down modes to optimize power consumption.
Applications
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption.
- Digital Gain and Offset Adjustment: Suitable for applications needing precise voltage and current adjustments.
- Programmable Voltage and Current Sources: Can be used in systems requiring programmable output voltages and currents.
Q & A
- What is the resolution of the DAC7512N/3K?
The DAC7512N/3K has a resolution of 12 bits.
- What is the supply voltage range for the DAC7512N/3K?
The supply voltage range is +2.7V to +5.5V.
- How much current does the DAC7512N/3K consume in normal operation at 5V?
The DAC7512N/3K consumes 135µA at 5V in normal operation.
- What is the power-down current consumption at 5V?
The power-down current consumption is 50nA at 5V.
- What types of serial interfaces is the DAC7512N/3K compatible with?
The DAC7512N/3K is compatible with SPI, QSPI, Microwire, and DSP interfaces.
- What is the maximum clock rate for the serial interface?
The maximum clock rate is up to 30 MHz.
- What are the available package types for the DAC7512N/3K?
The DAC7512N/3K is available in SOT23-6 and MSOP-8 packages.
- What is the temperature range for specified performance?
The specified performance temperature range is -40°C to +105°C.
- Does the DAC7512N/3K have a power-on reset feature?
Yes, the DAC7512N/3K has a power-on reset feature that ensures the DAC output powers up at 0V.
- What are some common applications for the DAC7512N/3K?
Common applications include portable battery-powered instruments, digital gain and offset adjustment, and programmable voltage and current sources.
