Overview
The DAC7644E, produced by Texas Instruments, is a 16-bit, quad voltage output digital-to-analog converter (DAC) that offers high precision and reliability. It is designed to provide guaranteed 15-bit monotonic performance over a wide temperature range of -40°C to +85°C. This converter accepts 16-bit parallel input data and features double-buffered DAC input logic, allowing for simultaneous updates of all DACs. It also includes a readback mode for the internal input registers and programmable asynchronous reset to either mid-scale or zero-scale codes. The DAC7644E is suitable for various applications, including automatic test equipment, DAC-per-pin programmers, data acquisition systems, and closed-loop servo-control, due to its low power consumption and compact size.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Number of Bits | 16 | - | - | - |
| Number of D/A Converters | 4 | - | - | - |
| Settling Time | - | 10µs | - | - |
| Output Type | - | Voltage - Buffered | - | - |
| Differential Output | - | No | - | - |
| Data Interface | - | Parallel | - | - |
| Reference Type | - | External | - | - |
| Voltage - Supply, Analog | +4.75 | +5.0 | +5.25 | V |
| Voltage - Supply, Digital | +4.75 | +5.0 | +5.25 | V |
| INL/DNL (LSB) | ±3 | ±2 | - | - |
| Operating Temperature | -40 | - | +85 | °C |
| Power Consumption | - | 10mW | - | - |
Key Features
- Low power consumption: 10mW
- Unipolar or bipolar operation
- Settling time of 10µs to 0.003%
- 15-bit linearity and monotonicity over the specified temperature range
- Programmable asynchronous reset to mid-scale or zero-scale codes
- Data readback mode of the internal input registers
- Double-buffered DAC input logic for simultaneous updates of all DACs
- R-2R architecture for stable and reliable conversion
Applications
- Industrial control systems
- Automated test equipment
- Data acquisition systems
- Closed-loop servo-control
- DAC-per-pin programmers
- Precision instrumentation
- Digital signal processing
Q & A
- What is the resolution of the DAC7644E? The DAC7644E has a 16-bit resolution.
- How many D/A converters does the DAC7644E have? The DAC7644E has four independently programmable D/A converters.
- What is the settling time of the DAC7644E? The settling time is 10µs to 0.003%.
- What is the operating temperature range of the DAC7644E? The operating temperature range is -40°C to +85°C.
- Can the DAC7644E operate with a single supply or dual supplies? The DAC7644E can operate from a single +5V supply or from +5V and -5V supplies.
- What is the power consumption of the DAC7644E? The power consumption is approximately 10mW.
- Does the DAC7644E support data readback? Yes, the DAC7644E supports data readback of the internal input registers.
- What type of data interface does the DAC7644E use? The DAC7644E uses a parallel data interface.
- Is the DAC7644E suitable for industrial control systems? Yes, the DAC7644E is suitable for industrial control systems among other applications.
- What is the package type of the DAC7644E? The DAC7644E is available in a 48-lead SSOP package.
