Overview
The DAC7731EC from Texas Instruments is a 16-bit, single-channel Digital-to-Analog Converter (DAC) designed to provide high precision and flexibility in various applications. It features a +10V internal reference and a high-speed output amplifier, making it suitable for automatic test equipment, industrial process control, and other demanding environments. The DAC7731EC offers configurable output ranges of ±10V, ±5V, or +10V, allowing for both unipolar and bipolar operation through pin strapping. With a maximum settling time of 5µs to ±0.003% FSR for a 20V full-scale change, this DAC ensures rapid and accurate analog output. It consumes only 100mW of power, making it a low-power solution for various industrial and test applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of D/A Converters | 1 |
| Number of Bits | 16 |
| Settling Time | 5µs |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | SPI |
| Reference Type | Internal, External |
| Voltage - Supply, Analog | ±11.4 V ~ 15.75 V, -4.75 V ~ -15.75 V |
| Voltage - Supply, Digital | 5V |
| INL/DNL (LSB) | ±3 (Max), ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 24-SSOP (0.209", 5.30mm Width) |
Key Features
- 16-bit monotonic performance over the specified operating temperature range
- +10V internal reference
- Configurable output ranges: ±10V, ±5V, or +10V
- Unipolar or bipolar operation through pin strapping
- High-speed output amplifier with a maximum settling time of 5µs to ±0.003% FSR
- Low power consumption: 100mW (typical)
- Standard 3-wire, SPI-compatible serial interface with double buffering
- User programmable reset control to min-scale or mid-scale
- Daisy-chain feature for multiple DAC7731s on a single bus
- Small SSOP-24 package
Applications
- Automatic Test Equipment (ATE)
- Industrial Process Control
- Closed-Loop Servo Control
- Motor Control
- Data Acquisition Systems
Q & A
- What is the resolution of the DAC7731EC?
The DAC7731EC has a resolution of 16 bits. - What are the configurable output ranges of the DAC7731EC?
The DAC7731EC can be configured for output ranges of ±10V, ±5V, or +10V. - What is the settling time of the DAC7731EC?
The settling time is 5µs to ±0.003% FSR for a 20V full-scale change. - Does the DAC7731EC support unipolar and bipolar operation?
Yes, it supports both unipolar and bipolar operation through pin strapping. - What is the power consumption of the DAC7731EC?
The typical power consumption is 100mW. - What type of serial interface does the DAC7731EC use?
The DAC7731EC uses a standard 3-wire, SPI-compatible serial interface with double buffering. - Can multiple DAC7731ECs be daisy-chained?
Yes, multiple DAC7731ECs can be daisy-chained on a single bus. - What is the operating temperature range of the DAC7731EC?
The operating temperature range is -40°C to +85°C. - What package type is the DAC7731EC available in?
The DAC7731EC is available in a 24-SSOP package. - What are some common applications of the DAC7731EC?
Common applications include automatic test equipment, industrial process control, closed-loop servo control, motor control, and data acquisition systems.
