Overview
The DAC7611U, produced by Texas Instruments, is a 12-bit digital-to-analog converter (DAC) designed for high performance and reliability. It operates on a single +5V supply and features a serial input interface compatible with various DSPs and microcontrollers. The device includes an input shift register, latch, a 2.435V reference, the DAC itself, and a high-speed rail-to-rail output amplifier. The DAC7611U is known for its fast settling time of 7µs to ±1 LSB and low power consumption of 2.5mW. It is available in 8-lead SOIC or 8-pin plastic DIP packages and is fully specified over the industrial temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Relative Accuracy | -2 | ±1/2 | +2 | LSB |
| Differential Nonlinearity | -1 | ±1/2 | +1 | LSB |
| Zero-Scale Error | -1 | - | +3 | LSB |
| Full Scale Voltage | 4.079 | 4.095 | 4.111 | V |
| Settling Time | - | 7 | - | µs |
| Power Supply Voltage | 4.75 | 5.0 | 5.25 | V |
| Power Dissipation | - | 2.5 | - | mW |
| Operating Temperature Range | -40 | - | +85 | °C |
Key Features
- Low Power Consumption: 2.5mW at 5V supply.
- Fast Settling Time: 7µs to ±1 LSB.
- High Linearity and Monotonicity: Guaranteed over the industrial temperature range.
- On-Board Reference: 2.435V reference voltage.
- Rail-to-Rail Output Amplifier: Provides a full-scale range of 0V to 4.095V.
- Asynchronous Reset: CLR input to set the output to 0V.
- 3-Wire Interface: Up to 20MHz clock speed.
- Capacitive Load Stability: Stable with loads up to 500pF.
Applications
- Process Control: Suitable for industrial process control systems.
- Data Acquisition Systems: Used in various data acquisition applications.
- Closed-Loop Servo-Control: Ideal for servo-control systems.
- PC Peripherals: Can be used in PC-related peripherals.
- Portable Instrumentation: Suitable for portable instrumentation devices.
Q & A
- What is the resolution of the DAC7611U?
The DAC7611U has a 12-bit resolution.
- What is the typical settling time of the DAC7611U?
The typical settling time is 7µs to ±1 LSB.
- What is the power supply voltage range for the DAC7611U?
The power supply voltage range is 4.75V to 5.25V.
- What is the maximum operating temperature of the DAC7611U?
The maximum operating temperature is +85°C.
- Does the DAC7611U have an on-board reference voltage?
Yes, it has a 2.435V on-board reference voltage.
- What is the full-scale output voltage range of the DAC7611U?
The full-scale output voltage range is approximately 0V to 4.095V.
- Is the DAC7611U stable with capacitive loads?
Yes, it is stable with capacitive loads up to 500pF.
- What is the asynchronous reset function in the DAC7611U?
The CLR input can be used to reset the DAC output to 0V.
- What is the clock speed of the serial interface?
The serial interface can operate up to 20MHz clock speed.
- In what packages is the DAC7611U available?
The DAC7611U is available in 8-lead SOIC or 8-pin plastic DIP packages.
