LTC2242IUP-10

LTC2242IUP-10 is a 10-bit monolithic analog-to-digital converter (ADC) that belongs to the family of Data Acquisition - Analog to Digital Convertor (ADC). This converter has a high speed, wide input range and no missing codes, making it especially suitable for several applications.

The LTC2242IUP-10 operates from a 5V single supply with a 10-bit resolution and flexible analog input range of up to ±10V. It uses the standard interval (SI) successive approximation ADC architecture with double-sampling, improving noise performance and settling time. The converter achieves a fast conversion rate of 1Ms/s with an integrated high-speed capacitor-based track-and-hold circuit, which allows it to track low frequency inputs up to 12kHz without external components. An additional input range of VREF/2 is also available to accommodate single-ended signals up to ±5V.

The flexible voltage reference of the LTC2242IUP-10 allows the user to select between another 4.096V and VDD as a reference, offering precision and flexibility. It also features an output buffer and TWI (I2C) interface, making it ideal for low power, high speed and low cost applications.

The LTC2242IUP-10 active power consumption is typically only 1.8mA at 1Ms/s, allowing for lean designs and cost savings. Its 107dB typical SNR, 83dB typical THD, 1LSB DNL and 0.5LSB INL ensures superior accuracy and dynamic performance. It also features true bipolar input and output ranges, offering flexibility in system design.

The working principle of the LTC2242IUP-10 is based on the SI successive approximation architecture, which enables users to capture, sample and convert analog inputs in a single device. The converter takes the input signal and converts it into a digital representation that is typically stored in a digital format on a microcontroller or other processing device. The conversion process is performed by a circuit called the track-and-hold, which samples the input signal periodically. It then holds the sampled signal while successive approximations are performed. During the successive approximations, the ADC compares the sampled signals with an internal reference value and updates the output with the corresponding digital representation. This process is repeated until the desired accuracy is achieved and the conversion is terminated.

In summary, the LTC2242IUP-10 is an ideal ADC for a range of cost-sensitive applications such as portable medical instruments, industrial process control, handheld data loggers and automotive electronics. Its high speed, low power and superior accuracy make it a great choice for designers looking for a reliable and cost-effective ADC solution.