Datasheet Linear Technology LTC2353ILX-18#PBF

Manufacturer	Linear Technology
Series	LTC2353-18
Part Number	LTC2353ILX-18#PBF

Buffered Dual, 18-Bit, 550ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range

Datasheets

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PDF, 2.2 Mb, Language: en, File uploaded: Mar 27, 2018, Pages: 38
Buffered Dual, 18-Bit, 550ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range

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Packaging

Package	7mm x 7mm LQFP-48
Package Code	LX
Package Index	05-08-1760

Parametrics

ADC INL	1 LSB
ADCs	1
Architecture	SAR
Bipolar/Unipolar Input	Bipolar, Unipolar
Bits	18 bits
Number of Channels	2
DNL	0.3 LSB
Demo Boards	DC2365A-C ,DC2365A-G
Export Control	no
Features	Buffered Inputs, Simultaneous Sampling, SoftSpan
I/O	Serial SPI, Serial LVDS
INL ppm	1 ppm
Input Drive	Differential, Single Ended
Input Span	В±10.24V, 0V to 10.24V, В±5.12V, 0V to 5.12V nn В±12.5V, 0V to 12.5V, В±6.25V, 0V to 6.25V
Internal Reference	yes
Operating Temperature Range	-40 to 85 °C
Power	187 mW
SFDR	112 dB
SINAD	96.2 dB
SNR	96.4 dB
Simultaneous	yes
Speed	550 ksps
Supply Voltage Range	2.375V to 5.25V
THD dB	-110 dB

Eco Plan

RoHS

Compliant

Application Notes

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Buffered ADC Family Eliminates Signal Conditioning Complexity &mdash AN167
PDF, 1.3 Mb, File published: Sep 20, 2017
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Application Note 167
September 2017
Buffered ADC Family Eliminates
Signal Conditioning Complexity
Joe Sousa, Andrew Thomas, Clement Wagner, Mark Thoren
Engineers often assume that analog-to-digital converter
inputs are high impedance. Direct-sampling SAR ADC
inputs will often be high impedance when not converting, but will draw вЂњspikesвЂќ of current at the beginning
of sample acquisition. On average, this behavior can be
modeled as a crude nonlinear resistance that is inversely
proportional to the sample capacitor size and sample rate,
but instantaneously the signal chain must be able to settle
completely in response to this abuse before acquisition
ends and a conversion begins. Coupling a signal chain to an ADC is an art form, often requiring a combination of theory
and experimentation. By contrast, the LTC2358 family of
multi-channel, buffered high voltage SAR ADCs offers
truly high impedance inputs that simplify or eliminate the
need for signal conditioning in many cases. When signal
conditioning is required, it can be directly connected to
the LTC2358 inputs without regard to its ability to drive
a switched capacitor. The following circuits show some
applications that take advantage of the properties of the
LTC2358 inputs. …

Model Line

Series: LTC2353-18 (3)

LTC2353CLX-18#PBF LTC2353HLX-18#PBF LTC2353ILX-18#PBF

Manufacturer's Classification

Data Conversion > Analog-to-Digital Converters (ADC) > Precision ADCs (Fs < 10Msps) > Simultaneous Sampling ADCs | Multi Channel ADCs

Other Names:

LTC2353ILX-18PBF, LTC2353ILX-18 PBF, LTC2353ILX18#PBF, LTC2353ILX 18#PBF