Overview
The DAC7744E/1K is a 16-bit, quad voltage output digital-to-analog converter (DAC) produced by Texas Instruments. This device is characterized by its guaranteed 16-bit monotonic performance over a specified temperature range of –40°C to +85°C. It accepts 16-bit parallel input data and features double-buffered DAC input logic, allowing for the simultaneous update of all DACs. Additionally, it includes a readback mode for the internal input registers and a programmable asynchronous reset that can clear all registers to either a mid-scale code of 8000H or a zero-scale of 0000H. The DAC7744E/1K operates from either a single +15V supply or from a combination of +15V, –15V, and +5V supplies, making it versatile for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | - | - | - | 16 bits | - |
| Linearity Error | T = 25°C | ±3 | ±6 | ±2 | LSB |
| Linearity Error | TMIN to TMAX | ±4 | ±6 | ±3 | LSB |
| Differential Linearity Error | T = 25°C | ±3 | ±2 | ±1 | LSB |
| Monotonicity | TMIN to TMAX | 14 | 15 | 16 | Bits |
| Bipolar Zero Error | T = 25°C | ±0.01 | ±0.025 | - | % of FSR |
| Full-Scale Error | T = 25°C | ±0.025 | - | - | % of FSR |
| Settling Time | - | - | 10µs to 0.003% | - | - |
| Operating Temperature Range | - | -40°C | - | +85°C | °C |
| Package Type | - | - | - | 48-lead SSOP | - |
| Power Supply | - | +15V | +15V, –15V, +5V | - | V |
Key Features
- Low Power Consumption: The DAC7744E/1K operates at a low power of 200mW, making it energy-efficient.
- Unipolar or Bipolar Operation: The device supports both unipolar and bipolar output ranges.
- Single-Supply Output Range: Up to +10V, and dual-supply output range up to ±10V.
- Fast Settling Time: Settling time of 10µs to 0.003%.
- 16-Bit Monotonicity: Guaranteed over the –40°C to +85°C temperature range.
- Programmable Reset: Asynchronous reset to mid-scale or zero-scale.
- Data Readback: Readback mode for internal input registers.
- Double-Buffered Data Inputs: Allows simultaneous update of all DACs.
Applications
- Process Control: Suitable for precise control in industrial processes.
- Automatic Test Equipment (ATE): Ideal for ATE pin electronics due to its precision and reliability.
- Closed-Loop Servo-Control: Used in servo-control systems for accurate and stable performance.
- Motor Control: Applies to motor control systems requiring precise voltage output.
- Data Acquisition Systems: Used in data acquisition systems for converting digital data into analog signals.
- DAC-Per-Pin Programmers: Suitable for programming applications where multiple DACs are required.
Q & A
- What is the resolution of the DAC7744E/1K?
The DAC7744E/1K has a resolution of 16 bits.
- What is the operating temperature range of the DAC7744E/1K?
The operating temperature range is –40°C to +85°C.
- What are the power supply options for the DAC7744E/1K?
The device can operate from either a single +15V supply or from a combination of +15V, –15V, and +5V supplies.
- What is the settling time of the DAC7744E/1K?
The settling time is 10µs to 0.003%.
- Does the DAC7744E/1K support data readback?
Yes, it supports a readback mode for the internal input registers.
- What is the package type of the DAC7744E/1K?
The device is available in a 48-lead SSOP package.
- What are some typical applications of the DAC7744E/1K?
Typical applications include process control, automatic test equipment, closed-loop servo-control, motor control, data acquisition systems, and DAC-per-pin programmers.
- Can the DAC7744E/1K operate in both unipolar and bipolar modes?
Yes, it supports both unipolar and bipolar operation.
- What is the power consumption of the DAC7744E/1K?
The device operates at a low power of 200mW.
- Is the DAC7744E/1K monotonic over its entire temperature range?
Yes, it guarantees 16-bit monotonic performance over the –40°C to +85°C temperature range.
