Overview
The DAC7644EBG4, produced by Texas Instruments, is a 16-bit, quad voltage output digital-to-analog converter (DAC). It is designed to provide high accuracy and reliability, with guaranteed 15-bit monotonic performance over the specified temperature range of –40°C to +85°C. This device accepts 16-bit parallel input data and features double-buffered DAC input logic, allowing for simultaneous updates of all DACs. Additionally, it includes a readback mode for the internal input registers and programmable asynchronous reset options to set the DAC registers to either mid-scale or zero-scale.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Accuracy - Linearity Error | ±3 | ±4 | ±2 | LSB |
| Linearity Match | ±4 | ±2 | LSB | |
| Differential Linearity Error | ±2 | ±3 | ±1 | LSB |
| Monotonicity | 14 | 15 | Bits | |
| Bipolar Zero Error | ±1 | ±2 | mV | |
| Bipolar Zero Error Drift | 5 | 10 | ppm/°C | |
| Full-Scale Error | ±1 | ±2 | mV | |
| Full-Scale Error Drift | 5 | 10 | ppm/°C | |
| Settling Time | 8 | 10 | µs | |
| Power Supply | +4.75 | +5.0 | +5.25 | V |
| Power Consumption | 7.5 | 10 | mW | |
| Operating Temperature Range | –40 | +85 | °C |
Key Features
- Low Power Consumption: The DAC7644EBG4 operates at a low power of 10mW, making it energy-efficient.
- Unipolar or Bipolar Operation: The device can operate in both unipolar and bipolar modes.
- Fast Settling Time: It has a settling time of 10µs to 0.003% for a 5V output step.
- High Linearity and Monotonicity: Guaranteed 15-bit linearity and monotonicity over the –40°C to +85°C temperature range.
- Programmable Reset: The device features programmable asynchronous reset to either mid-scale or zero-scale.
- Data Readback: Includes a readback mode for the internal input registers.
- Double-Buffered Data Inputs: Allows for simultaneous updates of all DACs.
Applications
- Process Control: Suitable for precise control in industrial processes.
- Closed-Loop Servo-Control: Ideal for servo-control systems requiring high accuracy.
- Motor Control: Used in motor control systems for precise speed and position control.
- Data Acquisition Systems: Employed in data acquisition systems for converting digital data into analog signals.
- DAC-Per-Pin Programmers: Useful in programming applications where multiple DACs are required.
Q & A
- What is the resolution of the DAC7644EBG4?
The DAC7644EBG4 is a 16-bit digital-to-analog converter.
- What is the operating temperature range of the DAC7644EBG4?
The device operates over a temperature range of –40°C to +85°C.
- Can the DAC7644EBG4 operate in both unipolar and bipolar modes?
- What is the settling time of the DAC7644EBG4?
The settling time is 10µs to 0.003% for a 5V output step.
- Does the DAC7644EBG4 support data readback?
- How many DACs are integrated into the DAC7644EBG4?
The DAC7644EBG4 is a quad voltage output digital-to-analog converter, meaning it has four integrated DACs.
- What is the power consumption of the DAC7644EBG4?
The device operates at a low power of 10mW.
- What package type is the DAC7644EBG4 available in?
The DAC7644EBG4 is available in a 48-lead SSOP package.
- Can the DAC7644EBG4 be reset to mid-scale or zero-scale?
- What are some common applications of the DAC7644EBG4?
