LTC2291CUP#PBF

Number of A/D Converters:	2
Base Part Number:	LTC2291
Supplier Device Package:	64-QFN (9x9)
Package / Case:	64-WFQFN Exposed Pad
Operating Temperature:	0°C ~ 70°C
Features:	Simultaneous Sampling
Voltage - Supply, Digital:	2.7 V ~ 3.4 V
Voltage - Supply, Analog:	2.7 V ~ 3.4 V
Reference Type:	External, Internal
Architecture:	Pipelined
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	Parallel
Input Type:	Differential, Single Ended
Number of Inputs:	2
Sampling Rate (Per Second):	25M
Number of Bits:	12
Part Status:	Active
Packaging:	Tube

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Introduction to the LTC2291CUP#PBF

The LTC2291CUP#PBF is an integrated circuit (IC) designed and manufactured by Linear Technology, a leading supply chain provider of Data Acquisition products worldwide. This IC is one of their most popular products and is highly sought-after by industries and professionals who demand superior performance and reliability from their components. The LTC2291CUP#PBF is a low-cost, low-power, single-channel Analogue-to-Digital Converter (ADC) and is suitable for a wide range of applications, from data acquisition to industrial control.

Application Fields

The LTC2291CUP#PBF is ideal for applications where accuracy and speed are paramount, such as communication systems, instrumentation and test/measurement systems as well as more demanding applications like medical imaging, harvesting energy from renewable sources and even low-power embedded systems, where power efficiency is key.This IC is especially well-suited for signal conditioning applications since it is capable of continuously sampling high-speed signals with up to 14-bit resolution. It can also handle extremely small signals with dynamic ranges as low as 5mV, while it\'s low power consumption, fast conversion time and signal-to-noise robustness make it a perfect choice for embedded applications. Due to its small size and low power requirements, this ADC is designed to be mounted onto high-density circuit boards and is also suitable for wireless applications, primarily due to its low current draw even when sampling.

Working Principle

The LTC2291CUP#PBF works by converting the analogue input signal into a 14 bit digital signal. This is done using a differential input architecture which gives the converter a high level of accuracy and low input noise by shielding the input from external noise.The analogue signal is sent from the input stage to the track-and-hold amplifier which samples the input in both positive and negative cycles and holds this information until the converter is ready to convert it. The signal is then sent to a ramp generator which constructs a triangular-like waveform which is used to modulate the analogue input signal and generate a digital equivalent.The IC also features an in-built tracking loop which can increase the stability of the converter in the presence of high noise or high transient input signals. Once the signal is modulated, the output of the ramp generator is sent to a comparator, which is then fed back to the track-and-hold amplifier, thus looping the signal.The converted digital output is then sent from the converter to the output stage, which is in charge of eliminating any noise from the signal. This output is then ready for further processing.

Conclusion

The LTC2291CUP#PBF is a high performance, low-power, single-channel Analogue-to-Digital Converter, providing 14 bit performance with extremely low power draw making it suitable for a variety of applications, both embedded and wireless. Its differential input architecture helps to reject noise and ensure accuracy even in the most demanding applications. The IC also features an in-built tracking loop which further bolsters the converter\'s performance by improving its stability. Overall, this ADC is a great choice for anybody looking for reliable, accurate, low power data acquisition in a compact package.

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