Overview
The DAC7611UB/2K5G4 is a 12-bit serial input digital-to-analog converter (DAC) produced by Texas Instruments. This device is part of the DAC7611 series and is known for its high performance and low power consumption. It operates on a single +5V supply and includes an input shift register, latch, 2.435V reference, DAC, and a high-speed rail-to-rail output amplifier. The DAC7611 is fully specified over the industrial temperature range of –40°C to +85°C and is available in 8-lead SOIC or 8-pin plastic DIP packages.
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 Code | -1 | - | +3 | LSB |
| Full Scale Voltage Code FFFH | 4.079 | 4.095 | 4.111 | V |
| Settling Time (tS) to ±1 LSB of Final Value | - | 7 | - | µs |
| Power Supply Voltage (VDD) | 4.75 | 5.0 | 5.25 | V |
| Power Dissipation | - | 2.5 | - | mW |
| Operating Temperature Range | -40 | - | +85 | °C |
Key Features
- Low Power Consumption: The DAC7611 consumes only 2.5mW of power at 5V supply.
- Fast Settling Time: The output settles to ±1 LSB within 7µs.
- High Linearity and Monotonicity: Ensures 12-bit linearity and monotonicity over the industrial temperature range.
- Asynchronous Reset: An asynchronous clear input (CLR) sets the DAC register to 000H and the output voltage to 0V.
- 3-Wire Interface: Supports up to 20MHz clock rate with serial clock (CLK), serial data input (SDI), and load strobe (LD) signals.
- Internal Reference and Rail-to-Rail Output Amplifier: Includes a 2.435V reference and a rail-to-rail output amplifier providing a full-scale range of 0V to 4.095V.
- Capacitive Load Stability: The output amplifier remains stable while driving capacitive loads up to 500pF.
Applications
- Process Control: Suitable for precision control in industrial processes.
- Data Acquisition Systems: Used in systems requiring high accuracy and fast conversion times.
- Closed-Loop Servo-Control: Ideal for servo-control applications needing precise analog output.
- PC Peripherals: Can be used in various PC peripheral devices requiring digital-to-analog conversion.
- Portable Instrumentation: Suitable for portable instruments due to its low power consumption and compact packaging.
Q & A
- What is the resolution of the DAC7611?
The DAC7611 has a resolution of 12 bits.
- What is the typical settling time of the DAC7611?
The output settles to ±1 LSB within 7µs.
- What is the power consumption of the DAC7611?
The DAC7611 consumes 2.5mW of power at a 5V supply.
- What is the operating temperature range of the DAC7611?
The DAC7611 operates over the industrial temperature range of –40°C to +85°C.
- What is the full-scale output voltage range of the DAC7611?
The full-scale output voltage range is approximately 0V to 4.095V.
- How does the asynchronous clear input (CLR) function?
The CLR input sets the DAC register to 000H and the output voltage to 0V when strobbed LOW.
- What type of interface does the DAC7611 use?
The DAC7611 uses a 3-wire interface with serial clock (CLK), serial data input (SDI), and load strobe (LD) signals.
- Is the DAC7611 stable with capacitive loads?
Yes, the output amplifier remains stable while driving capacitive loads up to 500pF.
- What are the package options for the DAC7611?
The DAC7611 is available in 8-lead SOIC or 8-pin plastic DIP packages.
- Is the DAC7611 recommended for new designs?
No, the DAC7611 is not recommended for new designs as it has been announced for discontinuation and is in the lifetime-buy period.
