LTC2421IMS#PBF

Number of A/D Converters:	1
Base Part Number:	LTC2421
Supplier Device Package:	10-MSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	2.7 V ~ 5.5 V
Voltage - Supply, Analog:	2.7 V ~ 5.5 V
Reference Type:	External
Architecture:	Sigma-Delta
Series:	microPOWER™
Ratio - S/H:ADC:	--
Configuration:	ADC
Data Interface:	SPI
Input Type:	Single Ended
Number of Inputs:	1
Sampling Rate (Per Second):	7.5
Number of Bits:	20
Part Status:	Active
Packaging:	Tube

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Data Acquisition - Analog to Digital Converters (ADC)

An analog to digital converter (ADC) is an electronic device used to convert an analog signal into digital data. It is often used to process and measure data from sources such as sound, light, temperature, or pressure. The LTC2421IMS#PBF is an example of an ADC that is part of the Linear Technology’s family of data acquisition (DAQ) products.The LTC2421IMS#PBF is a low-power, 24-bit, high-resolution delta-sigma ADC with an integrated oscillator and temperature sensor. It features an integrated temperature sensor, an adjustable gain analog front end, and a built-in low-pass filter for noise reduction. It allows for a wide range of input voltage ranges up to +4.096V for unipolar and -4.096 to +4.096V for bipolar ranges. The device has a maximum noise resolution of 108dB and is ideal for resolving low frequency signals.The device is based on a 4-stage ΔΣ modulator architecture and uses a mix of high-speed and lower-speed channels to provide a total conversion rate of 9 ksps. The digital architecture uses an internal 16-bit RMS error correction and provides automatic level adjustment to improve the dynamic performance. The device features programmable low-power sleep mode and power-down mode that allows for ultra-low standby and off-line operation.The LTC2421IMS#PBF includes what is known as a “timer-triggered” architecture for sampling input signals. This architecture is designed to ensure continuous, uninterrupted digitization of low-frequency signals without any analogue input hysteresis or drift. The sample and hold function is driven using an externally provided, adjustable-frequency clock. This clock can be adjusted to accommodate the desired sample rate or operating temperature range.The LTC2421IMS#PBF can be used in a variety of applications ranging from industrial process control, acoustic monitoring, and security systems to medical patient monitor applications. Its single-chip solution makes it ideal for low-power, cost effective, standalone operation. The device is also suitable for the development of embedded systems, as a module, or as a platform-based solution. This provides a great deal of flexibility in the design and deployment of high performance data acquisition systems.In addition to its excellent low-frequency performance, the LTC2421IMS#PBF also features a wide array of protection features such as ESD and overvoltage protection, temperature and process monitoring, output remote sensing, and software calibration. It is built with a low-voltage differential signaling (LVDS) interface, which allows it to be connected to a variety of digital logic circuits.In summary, the LTC2421IMS#PBF is an example of a high-performance, low-power data acquisition (DAQ) device that is used in a wide range of applications. Its integrated temperature sensor, adjustable gain analog front end, and built-in low-pass filter for noise reduction provide excellent low-frequency signal resolution. In addition, its integrated LVDS interface and protection features make it suitable for deployment as an embedded system, as a module, or as a platform-based solution.

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