Overview
The DAC7714UBG4 is a quad, serial input, 12-bit, voltage output Digital-to-Analog Converter (DAC) produced by Texas Instruments. This device is designed to provide high accuracy and reliability over a wide temperature range of –40°C to +85°C. It features a classic R-2R ladder architecture followed by an operational amplifier that serves as a buffer for each DAC channel. The DAC7714UBG4 can be powered from either a single +15V supply or dual ±15V supplies, making it versatile for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Accuracy Linearity Error | TA = –40°C to +85°C, VCC = +15V, VSS = GND, VREFH = +10V, VREFL = 0V | ±2 | ±1 | LSB | |
| Differential Linearity Error | TA = –40°C to +85°C, VCC = +15V, VSS = GND, VREFH = +10V, VREFL = 0V | ±1 | ±1 | LSB | |
| Monotonicity | TMIN to TMAX | 12 | Bits | ||
| Zero-Scale Error | Code = 004H | ±4 | LSB | ||
| Full-Scale Error | Code = FFFH | ±4 | LSB | ||
| Power Supply Sensitivity at Full Scale | 20 | ppm/V | |||
| VCC | 14.25 | 15.75 | V | ||
| ICC | 3.0 | 6 | mA | ||
| Power Dissipation | 45 | mW | |||
| Temperature Range | –40 | +85 | °C |
Key Features
- Quad, serial input, 12-bit, voltage output Digital-to-Analog Converter (DAC)
- Guaranteed 12-bit monotonic performance over the –40°C to +85°C temperature range
- Asynchronous reset to either mid-scale (800H) or zero-scale (000H) via the RESETSEL pin
- Can be powered from a single +15V supply or dual ±15V supplies
- Low power consumption and small size, ideal for process control, data acquisition systems, and closed-loop servo-control
- Available in a 16-pin SOIC package
- External voltage references (VREFL and VREFH) set the minimum and maximum output voltages
- 16-bit serial input word with 12-bit DAC code and 2-bit address code for selecting one of the four DACs
Applications
- Process control systems
- Data acquisition systems
- Closed-loop servo-control systems
- Industrial automation
- Medical devices requiring precise analog output
- Aerospace and defense applications where high reliability is crucial
Q & A
- What is the temperature range for the DAC7714UBG4?
The DAC7714UBG4 operates over a temperature range of –40°C to +85°C.
- What are the power supply options for the DAC7714UBG4?
The device can be powered from either a single +15V supply or dual ±15V supplies.
- How many DAC channels does the DAC7714UBG4 have?
The DAC7714UBG4 has four DAC channels.
- What is the resolution of the DAC7714UBG4?
The DAC7714UBG4 has a 12-bit resolution.
- What is the significance of the RESETSEL pin?
The RESETSEL pin allows for asynchronous reset to either mid-scale (800H) or zero-scale (000H).
- What is the typical power dissipation of the DAC7714UBG4?
The typical power dissipation is 45 mW for single supply operation.
- What is the package type for the DAC7714UBG4?
The device is available in a 16-pin SOIC package.
- How does the device handle zero-scale error when VSS = 0V?
When VSS = 0V, care must be taken as the output amplifier may not swing below ground for the first few digital input codes.
- What are the external voltage references used for?
The external voltage references (VREFL and VREFH) set the minimum and maximum output voltages.
- What is the data format of the serial input?
The data format is straight binary.
