Overview
The DAC7614U/1K, produced by Texas Instruments, is a quad, serial input, 12-bit, voltage output digital-to-analog converter (DAC). This device is designed to provide high accuracy and reliability over a wide temperature range of –40°C to +85°C. It features guaranteed 12-bit monotonic performance, making it suitable for various industrial and control applications. The DAC7614U/1K can be powered from either a single +5V supply or dual ±5V supplies, and it includes an asynchronous reset function that sets all DAC registers to either mid-scale or zero-scale, selectable via the RESETSEL pin.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Linearity Error | VSS = 0V or –5V | ±2 | ±1 | ±2 | LSB |
| Linearity Matching | VSS = 0V or –5V | ±2 | ±1 | ±2 | LSB |
| Differential Linearity Error | VSS = 0V or –5V | ±1 | ±1 | ±1 | LSB |
| Monotonicity | 12 | 12 | 12 | Bits | |
| Zero-Scale Error | Code = 000H | ±4 | ±6 | ±6 | LSB |
| Settling Time | 10µs | 10µs | 10µs | µs | |
| Power Consumption | 20mW | mW | |||
| Number of Channels | 4 | ||||
| Output Type | Voltage | ||||
| Temperature Range | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | °C |
Key Features
- Low Power Consumption: The DAC7614U/1K operates at a low power of 20mW, making it energy-efficient.
- Unipolar or Bipolar Operation: The device can operate in both unipolar and bipolar modes, offering flexibility in various applications.
- Fast Settling Time: It has a settling time of 10µs to 0.012%, ensuring quick and accurate conversions.
- 12-Bit Linearity and Monotonicity: Guaranteed 12-bit monotonic performance over the –40°C to +85°C temperature range.
- User Selectable Reset: The device allows for user-selectable reset to either mid-scale (800H) or zero-scale (000H) via the RESETSEL pin.
- Small Package Size: Available in 16-pin plastic DIP, 16-lead SOIC, or 20-lead SSOP packages, making it suitable for space-constrained designs.
- Second-Source for DAC8420: It serves as a second-source option for the DAC8420, providing an alternative with similar functionality.
Applications
- ATE Pin Electronics: Suitable for automated test equipment due to its precision and reliability.
- Process Control: Ideal for process control systems that require accurate and stable analog outputs.
- Closed-Loop Servo-Control: Used in servo-control systems where precise and fast analog output is necessary.
- Motor Control: Applicable in motor control systems that demand high accuracy and reliability.
- Data Acquisition Systems: Used in data acquisition systems to convert digital signals into accurate analog outputs.
Q & A
- What is the temperature range of the DAC7614U/1K?
The DAC7614U/1K operates over a temperature range of –40°C to +85°C.
- What is the power consumption of the DAC7614U/1K?
The device operates at a low power of 20mW.
- Can the DAC7614U/1K operate in both unipolar and bipolar modes?
- What is the settling time of the DAC7614U/1K?
The settling time is 10µs to 0.012%.
- How many channels does the DAC7614U/1K have?
The device has four channels.
- What types of packages are available for the DAC7614U/1K?
The device is available in 16-pin plastic DIP, 16-lead SOIC, or 20-lead SSOP packages.
- Can the DAC7614U/1K be reset to a known state?
- What is the significance of the RESETSEL pin?
The RESETSEL pin allows the user to select whether the reset sets all internal registers to mid-scale (800H) or zero-scale (000H).
- Is the DAC7614U/1K suitable for process control applications?
- How should the reference voltage inputs be configured?
The reference inputs, VREFL and VREFH, should be configured such that VREFH is at least 1.25V greater than VREFL, and both should be within the range of VSS + 2.25V and VDD – 2.25V.
