Overview
The DAC7512E/250G4, 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 enables rail-to-rail output swing, making it suitable for a wide range of applications. The DAC7512 uses a versatile three-wire serial interface compatible with standard SPI, QSPI, Microwire, and DSP interfaces, operating at clock rates up to 30MHz. The device is designed for low power consumption, making it ideal for portable battery-operated equipment.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 12 | bits | |||
| Output Voltage Range | 0 | VDD | V | ||
| Power Supply | 2.7 | 5.5 | V | ||
| Normal Mode Current Consumption | VDD = 5V | 115 | 135 | 200 | µA |
| Power-Down Current Consumption | VDD = 5V | 0.2 | 1 | µA | |
| Output Settling Time (1/4 to 3/4 Scale) | RL = 2kΩ, CL = 200pF | 8 | 10 | µs | |
| Slew Rate | 1 | V/µs | |||
| Operating Temperature Range | -40 | 105 | °C |
Key Features
- Low-power operation: 135µA at 5V and 1µW in power-down mode
- Power-on reset to 0V, ensuring the DAC output is at 0V until a valid write occurs
- Three power-down functions accessible via the serial interface
- On-chip output buffer amplifier with rail-to-rail operation
- Low power serial interface with Schmitt-triggered inputs
- Sync interrupt facility
- Compatible with SPI, QSPI, Microwire, and DSP interfaces
- Available in SOT23-6 and MSOP-8 packages
Applications
- Portable battery-powered instruments
- Digital gain and offset adjustment
- Programmable voltage and current sources
- Low-power industrial and medical devices
- Automotive and aerospace applications requiring low power consumption
Q & A
- What is the resolution of the DAC7512?
The DAC7512 has a resolution of 12 bits.
- What is the output voltage range of the DAC7512?
The output voltage range is from 0V to VDD.
- What are the power supply requirements for the DAC7512?
The power supply range is from +2.7V to +5.5V.
- How much current does the DAC7512 consume in normal mode at 5V?
The current consumption in normal mode at 5V is typically 135µA.
- What is the power-down current consumption of the DAC7512 at 5V?
The power-down current consumption at 5V is typically 1µA.
- What is the settling time for the DAC7512 from 1/4 to 3/4 scale?
The settling time is typically 8µs with RL = 2kΩ and CL = 200pF.
- What is the slew rate of the DAC7512's output amplifier?
The slew rate is 1V/µs.
- What are the operating temperature ranges for the DAC7512?
The operating temperature range is from -40°C to 105°C.
- What types of interfaces is the DAC7512 compatible with?
The DAC7512 is compatible with SPI, QSPI, Microwire, and DSP interfaces.
- In what packages is the DAC7512 available?
The DAC7512 is available in SOT23-6 and MSOP-8 packages.
