Overview
The DAC8802IPWRG4, produced by Texas Instruments, is a dual, 14-bit, current-output digital-to-analog converter (DAC) designed for high-performance applications. This device operates from a single 2.7 V to 5.5 V supply and features a 3-wire, SPI-compatible serial data interface. The DAC8802 is suitable for a wide range of applications requiring precise analog output, including industrial control, medical devices, and test and measurement equipment. It includes internal power-on reset, double-buffered registers, and a configurable asynchronous RS pin for half-scale or zero-scale preset.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 | Bits | ||
| Relative Accuracy | ±1 | LSB | ||
| Differential Nonlinearity | ±1 | LSB | ||
| Full-Scale Current | 1.6 | 2 | 2.5 | mA |
| Settling Time | 0.5 | µs | ||
| Reference Input Range | -15 | 15 | V | |
| Reference Input Resistance | 4 | 5 | 6 | kΩ |
| Operating Temperature Range | -40 | 85 | °C | |
| Supply Voltage Range | 2.7 | 5.5 | V |
Key Features
- Dual, 14-bit, current-output digital-to-analog converters with separate multiplying reference inputs.
- 3-wire, SPI-compatible serial data interface with clock, chip-select, and serial data input.
- Double-buffered registers for simultaneous update of all DAC outputs.
- Internal power-on reset to zero or midscale output voltage.
- Configurable asynchronous RS pin for half-scale or zero-scale preset.
- Full-scale output current determined by external reference voltage (VREF).
- Reference bandwidth of 10 MHz and reference dynamics of –105 dB THD.
- Internal feedback resistor (RFB) for temperature tracking with an external I-to-V converter amplifier.
Applications
The DAC8802IPWRG4 is versatile and can be used in various applications, including:
- Industrial control systems: For precise control of analog outputs in industrial automation.
- Medical devices: In medical equipment requiring high accuracy and reliability.
- Test and measurement equipment: For generating precise analog signals in testing and measurement applications.
- Audio and signal processing: For applications requiring high-quality analog output signals.
- Automotive systems: In automotive control systems where precise analog outputs are necessary.
Q & A
- What is the resolution of the DAC8802IPWRG4?
The DAC8802IPWRG4 has a resolution of 14 bits. - What is the operating supply voltage range of the DAC8802IPWRG4?
The operating supply voltage range is from 2.7 V to 5.5 V. - What type of serial interface does the DAC8802IPWRG4 use?
The DAC8802IPWRG4 uses a 3-wire, SPI-compatible serial data interface. - What is the full-scale current output of the DAC8802IPWRG4?
The full-scale current output is 1.6 mA to 2.5 mA, depending on the reference voltage. - Does the DAC8802IPWRG4 have internal power-on reset?
Yes, the DAC8802IPWRG4 has an internal power-on reset that forces the output voltage to zero or midscale at system turn-on. - What is the reference input range for the DAC8802IPWRG4?
The reference input range is from -15 V to 15 V. - Can the DAC8802IPWRG4 be used for 4-quadrant multiplying applications?
Yes, the DAC8802IPWRG4 can be used for 4-quadrant multiplying applications with additional external circuitry. - What is the settling time of the DAC8802IPWRG4?
The settling time is 0.5 µs. - Does the DAC8802IPWRG4 support simultaneous updates of all DAC outputs?
Yes, the DAC8802IPWRG4 supports simultaneous updates of all DAC outputs through its double-buffered registers and LDAC strobe input. - What is the operating temperature range of the DAC8802IPWRG4?
The operating temperature range is from -40°C to 85°C.
