The LT1446 is a dual-channel, 12-bit, rail-to-rail micropower digital-to-analog converter (DAC) packaged in SO-8. Its main functions are as follows:
Dual-channel Conversion
It has two independent channels, each capable of converting digital signals into analog voltages, and can output two different analog signals simultaneously, which is suitable for applications requiring multiple analog quantity control.
High Resolution
With 12-bit resolution, it can provide fine-grained analog output, and the maximum differential nonlinearity (DNL) error is 0.5LSB, which can accurately convert digital signals into analog voltages.
Rail-to-rail Output
The output amplifier of LT1446 adopts a rail-to-rail structure, which can output analog voltages from the lowest to the highest power supply voltage range, making full use of the power supply voltage range and improving the dynamic range of the output signal.
Serial Interface
It is equipped with a three-wire cascadable serial interface with a 500kHz update rate, which can be easily connected to microcontrollers or other digital devices for data transmission. The Schmidt trigger on the input terminal allows direct interface with optocouplers, enhancing the anti-interference ability and flexibility of the interface.
Low Power Consumption
It has low power consumption characteristics and is suitable for battery-powered applications. When operating at 3V (LTC1446L), the typical supply current is 650µA; when operating at 5V (LTC1446), the typical supply current is 1000µA.
Dual-channel Conversion
It has two independent channels, each capable of converting digital signals into analog voltages, and can output two different analog signals simultaneously, which is suitable for applications requiring multiple analog quantity control.
High Resolution
With 12-bit resolution, it can provide fine-grained analog output, and the maximum differential nonlinearity (DNL) error is 0.5LSB, which can accurately convert digital signals into analog voltages.
Rail-to-rail Output
The output amplifier of LT1446 adopts a rail-to-rail structure, which can output analog voltages from the lowest to the highest power supply voltage range, making full use of the power supply voltage range and improving the dynamic range of the output signal.
Serial Interface
It is equipped with a three-wire cascadable serial interface with a 500kHz update rate, which can be easily connected to microcontrollers or other digital devices for data transmission. The Schmidt trigger on the input terminal allows direct interface with optocouplers, enhancing the anti-interference ability and flexibility of the interface.
Low Power Consumption
It has low power consumption characteristics and is suitable for battery-powered applications. When operating at 3V (LTC1446L), the typical supply current is 650µA; when operating at 5V (LTC1446), the typical supply current is 1000µA.
