Overview
The DAC7564IAPWR is a four-channel, 12-bit digital-to-analog converter (DAC) produced by Texas Instruments. This device is designed for high precision and low power consumption, making it ideal for various applications including portable instrumentation, closed-loop servo-control, process control, and data acquisition systems. The DAC7564 features an internal 2.5V reference with high accuracy and stability, and it operates over a wide power-supply range from 2.7V to 5.5V. The device is available in a TSSOP-16 package and is functionally compatible with other models like the DAC8164 and DAC8564.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Relative Accuracy | ±0.5 | ±1 | - | LSB |
| Differential Nonlinearity | ±0.1 | ±0.5 | - | LSB |
| Offset Error | ±5 | ±8 | - | mV |
| Full-Scale Error | ±0.2 | ±0.5 | - | % of FSR |
| Output Voltage Range | 0 | - | VREF | V |
| Output Voltage Settling Time | - | 10 | - | μs |
| Power Supply Range | 2.7 | - | 5.5 | V |
| Operating Temperature Range | -40 | - | 105 | °C |
| Power Consumption (Normal Mode) | - | 2.9mW @ 3V | - | mW |
| Power Consumption (Power-Down Mode) | - | 1.5μW @ 3V | - | μW |
Key Features
- Internal Reference: 2.5V internal reference with 0.02% initial accuracy and 2ppm/°C temperature drift.
- Low Power Operation: Ultra-low power consumption with 1mA at 5V and 1.3μA in power-down mode.
- High Accuracy and Linearity: 12-bit resolution with ±0.5 LSB relative accuracy and ±0.5 LSB differential nonlinearity.
- Fast Settling Time: Output voltage settling time of 10μs to ±0.024% full-scale range.
- Wide Power-Supply Range: Operates from 2.7V to 5.5V.
- Serial Interface: 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP interfaces, operating up to 50MHz.
- On-Chip Output Buffer Amplifier: Rail-to-rail operation with a DC output impedance of 1Ω.
- Power-On Reset and Power-Down Feature: Ensures DAC output powers up at zero-scale and reduces current consumption in power-down mode.
Applications
- Portable Instrumentation: Ideal for battery-operated devices due to low power consumption.
- Closed-Loop Servo-Control: High precision and stability make it suitable for servo-control applications.
- Process Control and PLCs: Used in industrial control systems for precise analog output.
- Data Acquisition Systems: Suitable for data acquisition due to its high accuracy and fast settling time.
- Programmable Attenuation and PC Peripherals: Can be used in various other applications requiring precise analog output.
Q & A
- What is the resolution of the DAC7564?
The DAC7564 has a 12-bit resolution.
- 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 2ppm/°C.
- What is the power consumption of the DAC7564 in normal mode?
The power consumption is 2.9mW at 3V and reduces to 1.5μW in power-down mode.
- What is the settling time of the DAC7564?
The output voltage settling time is 10μs to ±0.024% full-scale range.
- What is the operating temperature range of the DAC7564?
The operating temperature range is from -40°C to +105°C.
- What types of serial interfaces does the DAC7564 support?
The DAC7564 supports SPI, QSPI, Microwire, and DSP interfaces, operating up to 50MHz.
- Does the DAC7564 have a power-on reset feature?
Yes, the DAC7564 has a power-on reset feature that ensures the DAC output powers up at zero-scale.
- What is the DC output impedance of the DAC7564?
The DC output impedance is 1Ω.
- Is the DAC7564 suitable for portable instrumentation?
Yes, it is ideal for portable instrumentation due to its low power consumption and small footprint.
- What package type is the DAC7564 available in?
The DAC7564 is available in a TSSOP-16 package.
