Overview
The LMP92066PWPR, produced by Texas Instruments, is a highly integrated dual temperature-controlled Digital-to-Analog Converter (DAC) with integrated EEPROM and output ON/OFF control. This device is designed to provide precise temperature-dependent bias voltages, making it ideal for various control applications. The LMP92066 features two independent 12-bit DACs, each capable of producing output voltages in the range of 0 V to 5 V or 0 V to -5 V. The device includes a built-in digital temperature sensor and two user-defined temperature-to-voltage transfer functions stored in the internal EEPROM. This allows for autonomous operation without the need for continuous system controller intervention once the EEPROM is programmed.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Resolution | 12 | 12 | - | Bits |
| Output Range | 0 V to 5 V or 0 V to -5 V | - | - | V |
| Temperature Accuracy | - | - | ±3.2°C | °C |
| Post-Calibration Accuracy | - | ±2.4 mV | - | mV |
| Output Switching Time | - | 50 ns | - | ns |
| VDD Supply Range | 4.75 V | - | 5.25 V | V |
| VIO Range | 1.65 V | - | 3.6 V | V |
| Operating Temperature Range | -40°C | - | 125°C | °C |
| Maximum EEPROM Write Cycles | - | - | 100 | Cycles |
Key Features
- Internal 12-bit temperature sensor with ±3.2°C accuracy over -40°C to 120°C.
- Two independent 12-bit DACs with output ranges of 0 V to 5 V or 0 V to -5 V.
- Two user-defined temperature-to-voltage transfer functions stored in internal EEPROM.
- High-capacitive load tolerant up to 10 µF.
- Output ON/OFF control with switching time of 50 ns.
- I2C interface with standard and fast modes, and nine selectable slave addresses.
- VDD supply range of 4.75 V to 5.25 V and VIO range of 1.65 V to 3.6 V.
- Thermally enhanced PowerPAD™ package for precise PCB temperature measurement.
Applications
- GaN or LDMOS Power Amplifier (PA) bias controller.
- Sensor temperature compensation.
- Timing circuit temperature compensation.
Q & A
- What is the primary function of the LMP92066?
The LMP92066 is a dual temperature-controlled DAC designed to provide precise temperature-dependent bias voltages.
- What is the resolution of the DACs in the LMP92066?
The DACs in the LMP92066 have a resolution of 12 bits.
- What are the output voltage ranges of the LMP92066?
The output voltage ranges are 0 V to 5 V or 0 V to -5 V.
- How accurate is the temperature sensor in the LMP92066?
The temperature sensor has an accuracy of ±3.2°C over the range of -40°C to 120°C.
- What is the switching time for the output ON/OFF control?
The switching time is 50 ns.
- What interface does the LMP92066 use for communication?
The device uses an I2C interface with standard and fast modes.
- How many EEPROM write cycles are supported by the LMP92066?
The device supports up to 100 EEPROM write cycles.
- What is the operating temperature range of the LMP92066?
The operating temperature range is -40°C to 125°C.
- What package type is the LMP92066 available in?
The device is available in a thermally enhanced PowerPAD™ package.
- What are some common applications of the LMP92066?
