Datasheet Linear Technology LTC2338CMS-18#TRPBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC2338-18
Artikelnummer	LTC2338CMS-18#TRPBF

18-Bit, 1 Msps, ± 10,24 V True Bipolar, ADC mit vollständig differenziellem Eingang und 100 dB SNR

Datenblätter

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PDF, 1.8 Mb, Sprache: en, Datei hochgeladen: Aug 20, 2017, Seiten: 26
18-Bit, 1Msps, ±10.24V True Bipolar, Fully Differential Input ADC with 100dB SNR

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Verpackung

Package	MS-16
Package Code	MS
Package Index	05-08-1669

Parameter

ADC INL	1 LSB
ADCs	1
Architecture	SAR
Bipolar/Unipolar Input	True Bipolar
Bits	18 bits
Number of Channels	1
DNL	0.1 LSB
Demo Boards	DC1908A-A
Design Tools	Linduino File,LinearLabTools
Export Control	no
I/O	Serial SPI
Input Drive	Fully Differential
Input Span	В±6.25V, В±10.24V, В±12.5V
Internal Reference	yes
Operating Temperature Range	0 to 70 °C
Power	50 mW
SFDR	117 dB
SINAD	101 dB
SNR	100 dB
Simultaneous	no
Speed	1000 ksps
Supply Voltage Range	5V
THD dB	-115 dB

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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Generating a В±10.24V True Bipolar Input for an 18-Bit, 1Msps SAR ADC &mdash DN522
PDF, 452 Kb, Datei veröffentlicht: Nov 26, 2013
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Generating a В±10.24V True Bipolar Input for an 18-Bit, 1Msps
SAR ADC
Design Note 522
Guy Hoover
Introduction
The LTC В®2338 is an 18-bit fully differential SAR ADC
that is remarkably easy to drive. This 1Msps ADC operates from a single 5V supply and achieves В±4LSB INL
maximum with вЂ“111dB THD and 100dB SNR. Its fully
differential В±20.48V true bipolar input range minimizes
the need for range scaling, and its 2kО© resistive input
greatly reduces the charge kickback from the internal
sampling capacitor.
ADCs claiming similar performance require scaling
to exceed what is typically a 0V to VREF input range,
resulting in low impedance inputs or an additional
buffer stage requirement. To band limit noise and
minimize disturbances reflected into the buffer from
sampling transients, other ADCs require filter circuitry
composed of expensive film or C0G capacitors at the
driver output. In contrast, the simple driver circuit
presented here requires only a dual precision op amp
and two resistors to drive the LTC2338-18. Layout
strategies for this circuit are also shown. C59 …

Modellreihe

Serie: LTC2338-18 (6)

LTC2338CMS-18#PBF LTC2338CMS-18#TRPBF LTC2338HMS-18#PBF LTC2338HMS-18#TRPBF LTC2338IMS-18#PBF LTC2338IMS-18#TRPBF

Herstellerklassifikation

Data Conversion > Analog-to-Digital Converters (ADC) > Precision ADCs (Fs < 10Msps) > Single Channel ADCs
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) ADCs

Andere Namen:

LTC2338CMS-18TRPBF, LTC2338CMS-18 TRPBF, LTC2338CMS18#TRPBF, LTC2338CMS 18#TRPBF