Overview
The DAC7564ICPWRG4, produced by Texas Instruments, is a four-channel, 12-bit digital-to-analog converter (DAC) designed for high precision and low power consumption. This device is particularly suited for applications requiring multiple analog output channels with minimal glitch energy and high linearity. The DAC7564 features an internal 2.5V reference with high accuracy and stability, making it ideal for various industrial and portable applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 Bits | |
| Relative Accuracy | ±0.5 to ±1 LSB | |
| Differential Nonlinearity | ±0.1 to ±0.5 LSB | |
| Offset Error | ±5 to ±8 mV | |
| Full-Scale Error | ±0.2 to ±0.5 % of FSR | |
| Gain Error | ±0.05 to ±0.2 % of FSR | |
| Internal Reference Voltage | 2.4975 to 2.5025 V | |
| Internal Reference Temperature Drift | 2 to 5 ppm/°C | |
| Power Supply Range | +2.7V to +5.5V | |
| Operating Temperature Range | –40°C to +105°C | |
| Settling Time | 10 μs to ±0.024% FSR | |
| Power Consumption (Active) | 2.9 mW at 3V, 4.7 mW at 5V | |
| Power Consumption (Power-Down) | 1.5 μW at 3V, 1.3 μA at 5V |
Key Features
- Internal Reference: 2.5V internal reference with high accuracy (±0.02%) and low temperature drift (2 to 5 ppm/°C).
- Low Glitch Energy: Minimal code-to-code transient voltages with a glitch energy of 0.15 nV-s.
- High Linearity: 12-bit monotonic over the temperature range with good linearity and minimal differential nonlinearity.
- Ultra-Low Power Operation: Low power consumption in both active and power-down modes.
- Wide Power-Supply Range: Operates from +2.7V to +5.5V.
- Fast Settling Time: Settles to ±0.024% of full-scale range in 10 μs.
- On-Chip Output Buffer Amplifier: Rail-to-rail operation with a short-circuit current capability.
- Serial Interface: Compatible with standard SPI, QSPI, Microwire, and DSP interfaces, operating up to 50 MHz.
- Power-On Reset: Ensures the DAC output powers up at zero-scale and remains there until a valid code is written.
Applications
- Portable Instrumentation: Ideal for battery-operated devices due to low power consumption.
- Closed-Loop Servo-Control: Suitable for applications requiring precise analog output control.
- Process Control, PLCs: Used in industrial control systems for accurate analog output.
- Data Acquisition Systems: Employed in systems that require multiple high-precision analog outputs.
- Programmable Attenuation: Useful in applications needing adjustable analog signal levels.
- PC Peripherals: Can be used in various computer peripherals requiring analog output.
Q & A
- What is the resolution of the DAC7564?
The DAC7564 has a resolution of 12 bits.
- What is the internal reference voltage of the DAC7564?
The internal reference voltage is 2.5V with an initial accuracy of ±0.02% and a temperature drift of 2 to 5 ppm/°C.
- What is the power supply range for the DAC7564?
The device operates from +2.7V to +5.5V.
- What is the settling time of the DAC7564?
The settling time is 10 μs to ±0.024% of the full-scale range.
- Does the DAC7564 have a power-on reset feature?
- What is the maximum clock rate for the serial interface of the DAC7564?
The serial interface operates up to 50 MHz.
- How much power does the DAC7564 consume in active mode?
The power consumption is approximately 2.9 mW at 3V and 4.7 mW at 5V.
- What is the power consumption in power-down mode?
In power-down mode, the device consumes approximately 1.5 μW at 3V and 1.3 μA at 5V.
- Is the DAC7564 compatible with other DAC models from Texas Instruments?
- What is the operating temperature range of the DAC7564?
The operating temperature range is –40°C to +105°C.
