Overview
The DAC7513E/2K5G4, produced by Texas Instruments, is a low-power, single, 12-bit buffered voltage output Digital-to-Analog Converter (DAC). This device features a versatile 3-wire serial interface compatible with standard SPI, QSPI, Microwire, and DSP interfaces, operating at clock rates up to 30MHz. The DAC7513E is designed for applications requiring high precision and low power consumption, making it ideal for portable battery-operated equipment.
The on-chip precision output amplifier allows for rail-to-rail output swing, and the device includes a power-on reset circuit that ensures the DAC output powers up at 0V and remains there until a valid write takes place. Additionally, the DAC7513E has a power-down feature that reduces current consumption to 200nA at 5V, further enhancing its suitability for power-sensitive applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 12 | Bits | |||
| Relative Accuracy | ±8 | LSB | |||
| Differential Nonlinearity | ±1 | LSB | |||
| Zero Code Error | All Zeroes Loaded to DAC Register | +5 | +20 | mV | |
| Full-Scale Error | All Ones Loaded to DAC Register | -0.15 | -1.25 | % of FSR | |
| Gain Error | ±1.25 | % of FSR | |||
| Output Voltage Range | 0 | VREF | V | ||
| Output Voltage Settling Time | 1/4 Scale to 3/4 Scale Change | 8 | 10 | 12 | µs |
| VDD | 2.7 | 5.5 | V | ||
| IDD (normal mode) | VDD = +3.6V to +5.5V | 115 | 170 | µA | |
| IDD (all power-down modes) | VDD = +3.6V to +5.5V | 0.2 | 1 | µA | |
| Operating Temperature Range | -40 | +105 | °C |
Key Features
- Low-power operation: 115µA at 5V
- Power-on reset to zero
- Ensured monotonic by design
- Settling time: 10µs to 1LSB
- Low-power serial interface with Schmitt-triggered inputs
- On-chip output buffer amplifier, rail-to-rail operation
- SYNC interrupt facility
- Available in SOT23-8 and MSOP-8 packages
- Power-down modes with reduced current consumption to 200nA at 5V
Applications
- Process control
- Data acquisition systems
- Closed-loop servo-control
- PC peripherals
- Portable instrumentation
- Programmable attenuation
- Bipolar operation using external circuitry
- Use with precision voltage references like REF02 for noisy or non-standard supply voltages
Q & A
- What is the resolution of the DAC7513E?
The DAC7513E has a resolution of 12 bits.
- What is the typical power consumption of the DAC7513E in normal operation?
The typical power consumption is 115µA at 5V.
- What is the output voltage range of the DAC7513E?
The output voltage range is from 0V to VREF.
- How does the power-on reset feature work?
The DAC7513E has a power-on reset circuit that ensures the DAC output powers up at 0V and remains there until a valid write takes place.
- What are the power-down modes available in the DAC7513E?
The DAC7513E has four power-down modes, reducing supply current to as low as 200nA at 5V.
- What is the settling time of the DAC7513E?
The settling time is 10µs to 1LSB.
- Is the DAC7513E compatible with standard serial interfaces?
Yes, it is compatible with SPI, QSPI, Microwire, and most DSP interfaces.
- What are the available packages for the DAC7513E?
The DAC7513E is available in SOT23-8 and MSOP-8 packages.
- Can the DAC7513E be used in bipolar operation?
Yes, the DAC7513E can be used in bipolar operation using external circuitry as shown in the datasheet.
- What is the operating temperature range of the DAC7513E?
The operating temperature range is from -40°C to +105°C.
