Datasheet Linear Technology LTC2357HLX-18#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC2357-18
Artikelnummer	LTC2357HLX-18#PBF

Gepuffertes Quad, 18-Bit, 350 ksps / Kanal Differenz ± 10,24 V ADC mit 30 VP-P Gleichtaktbereich

Datenblätter

PDF, 2.7 Mb, Datei hochgeladen: Nov 17, 2017

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Verpackung

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

Parameter

ADC INL	1 LSB
ADCs	1
Architecture	SAR
Bipolar/Unipolar Input	Bipolar, Unipolar
Bits	18 bits
Number of Channels	4
DNL	0.2 LSB
Demo Boards	DC2365A-B
Export Control	no
Features	Simultaneous Sampling, Buffered Inputs
I/O	Serial SPI, Serial LVDS
Input Drive	Differential, Single Ended
Input Span	В±10.24V, 0V to 10.24V, В±5.12V, 0V to 5.12V, В±12.5V, 0V to 12.5V, В±6.25V, 0V to 6.25V
Internal Reference	yes
Operating Temperature Range	-40 to 125 °C
Power	174 mW
SFDR	112 dB
SINAD	96.2 dB
SNR	96.4 dB
Simultaneous	yes
Speed	350 ksps
Supply Voltage Range	5V
THD dB	-110 dB

Öko-Plan

RoHS

Compliant

Anwendungshinweise

Herunterladen
Buffered ADC Family Eliminates Signal Conditioning Complexity &mdash AN167
PDF, 1.3 Mb, Datei veröffentlicht: 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. …

Modellreihe

Serie: LTC2357-18 (3)

LTC2357CLX-18#PBF LTC2357HLX-18#PBF LTC2357ILX-18#PBF

Herstellerklassifikation

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

Andere Namen:

LTC2357HLX-18PBF, LTC2357HLX-18 PBF, LTC2357HLX18#PBF, LTC2357HLX 18#PBF

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