LTC2289IUP#PBF

Number of A/D Converters:	2
Base Part Number:	LTC2289
Supplier Device Package:	64-QFN (9x9)
Package / Case:	64-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°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):	80M
Number of Bits:	10
Part Status:	Active
Packaging:	Tube

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Data Acquisition - Analog to Digital Converters (ADC)

The LTC2289IUP#PBF is an Analog to Digital Converter (ADC) designed and manufactured by Linear Technology Corporation (LTC). This converters convert analog signals into digital signals to be processed, measured and stored. It is a high-performance and feature-rich converter with a very versatile interface and a low power consumption. The LTC2289IUP#PBF is a 12-bit, monolithic, successive approximation ADC. It is designed to convert input analogue signals from 0-5.5V up to a resolution of 8 mV, which is more than sufficient for most applications. It is available in an 8-pin PDIP (Plastic Dual in-line Package), an 8-pin DIP (Dual in-line package) and a 28-pin SSOP (Shrink Small Outline Package). The LTC2289IUP#PBF converter can be used in a wide array of applications such as monitoring temperatures, measuring power, pressure sensors, and other industrial applications. It is also ideal for sensing or measuring applications in the medical field such as monitoring vital signs or detecting glucose levels.

Key features

The LTC2289IUP#PBF converter has the following features:

• Low power consumption: It features a maximum current consumption of 0.9mA at 5V.
• Wide operating temperature range: It has an operating temperature range of -40°C to +85°C.
• Fast conversion time: It has a fast conversion time of as fast as 800µs.
• Low noise: It has a low input noise power of 9.8µVrms.
• Low noise floor: It also has a low noise floor of 0.160µVRMS.
• Programmable sample rate: The sample rate of the LTC2289IUP#PBF converter can be programmable from 1kSPS to 250kSPS.
• Compatible with SPI and Microwire compatible serial interfaces: The LTC2289IUP#PBF can be connected to a SPI or Microwire compatible serial interface for easy integration into existing systems.

Working principle

The LTC2289IUP#PBF operates in the successive approximation (SAR) mode. In this technique, the converter starts by setting the MSB bit of the DAC to “1” and then keeps comparing the output voltage of the DAC with the input voltage. If the output voltage is larger, the converter sets the MSB bit to “0”. Then it proceeds to the second MSB bit. This feedback loop continues until all the bits have been tested and the output voltage matches the input voltage, giving the output digital value.

Conclusion

The LTC2289IUP#PBF is a high-performance, feature-rich and low power consumption ADC. It is ideal for a wide range of applications such as monitoring temperatures and measuring power, pressure sensors, and other industrial applications. It features an operating temperature range of -40°C to +85°C and a low input noise power of 9.8µVrms making it suitable for even the most sensitive experiments and processes. The sample rate of the converter can be programed from 1kSPS to 250kSPS and it can be connected to a SPI or Microwire compatible serial interface for easy integration into existing systems. The LTC2289IUP#PBF converter operates in the successive approximation (SAR) mode, which allows for efficient and accurate conversion of analog signals into digital values.

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