LTC2357CLX-16#PBF

Number of A/D Converters:	4
Base Part Number:	LTC2357
Supplier Device Package:	48-LQFP (7x7)
Package / Case:	48-LQFP
Operating Temperature:	0°C ~ 70°C
Features:	Simultaneous Sampling
Voltage - Supply, Digital:	4.75 V ~ 5.25 V
Voltage - Supply, Analog:	7.5 V ~ 38 V
Reference Type:	External, Internal
Architecture:	SAR
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	S/H-MUX-ADC
Data Interface:	SPI
Input Type:	Differential
Number of Inputs:	4
Sampling Rate (Per Second):	350k
Number of Bits:	16
Part Status:	Active
Packaging:	Tray

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Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values. One type of data acquisition technology in particular is Analog to Digital converters (ADCs). The LTC2357CLX-16#PBF is an ADC module that is purpose-built for data acquisition. This paper will discuss the application fields, features, and working principles of this ADC module.The LTC2357CLX-16#PBF is a low-noise successive approximation ADC module designed for precision data acquisition. This module is designed for industrial applications where precise measurements are required, such as distributed power systems, energy metering, and factory automation. The module is designed to maximize the accuracy of measurements even in noisy environments.The LTC2357CLX-16#PBF features 16 channels per module, a programmable gain amplifier (PGA) with a range of 2x to 128x, and a 25MHz sampling rate. The module also has a wide effective number of bits (ENOB) of 15-bit at 2x gain, and 12-bits at 128x. The wide gain range of the PGA helps to reduce the errors caused by high-frequency noise and crosstalk. This reduces the amount of filtering required, allowing for faster acquisition.The LTC2357CLX-16#PBF works by first converting an analog input into its digital equivalent. This is done through a successive approximation ADC. This is a two-step process that converts a given input voltage into a digital code. In the first step, the analog input is compared to a series of reference voltages. An array of switches in the ADC sets the reference voltage under test. The result from this comparison determines which reference voltage is closest to the input voltage. In the second step, the output is compared against the newly determined reference voltage. This process is repeated until the input voltage is within prescribed accuracy.The LTC2357CLX-16#PBF is a powerful ADC module that is designed for use in demanding industrial applications. The 16 channels per module, wide gain range, and wide effective number of bits make this module an ideal choice for metering and precision data acquisition applications. The module’s ability to minimize noise and crosstalk allows it to maximize the accuracy of measurements in noisy environments. Overall, the LTC2357CLX-16#PBF is an impressive ADC module that is sure to meet the needs of any industrial application.

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