Datasheet Linear Technology LTC2338-18 — Datenblatt

Hersteller	Linear Technology
Serie	LTC2338-18

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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Preise

Verpackung

	LTC2338CMS-18#PBF	LTC2338CMS-18#TRPBF	LTC2338HMS-18#PBF	LTC2338HMS-18#TRPBF	LTC2338IMS-18#PBF	LTC2338IMS-18#TRPBF
N	1	2	3	4	5	6
Package	MS-16 Paketumrisszeichnung	MS-16 Paketumrisszeichnung	MS-16 Paketumrisszeichnung	MS-16 Paketumrisszeichnung	MS-16 Paketumrisszeichnung	MS-16 Paketumrisszeichnung
Package Code	MS	MS	MS	MS	MS	MS
Package Index	05-08-1669	05-08-1669	05-08-1669	05-08-1669	05-08-1669	05-08-1669
Pin Count	16	16	16	16	16	16

Parameter

Parameters / Models	LTC2338CMS-18#PBF	LTC2338CMS-18#TRPBF	LTC2338HMS-18#PBF	LTC2338HMS-18#TRPBF	LTC2338IMS-18#PBF	LTC2338IMS-18#TRPBF
ADC INL, LSB	1	1	1	1	1	1
ADCs	1	1	1	1	1	1
Architecture	SAR	SAR	SAR	SAR	SAR	SAR
Bipolar/Unipolar Input	True Bipolar	True Bipolar	True Bipolar	True Bipolar	True Bipolar	True Bipolar
Bits, bits	18	18	18	18	18	18
Number of Channels	1	1	1	1	1	1
DNL, LSB	0.1	0.1	0.1	0.1	0.1	0.1
Demo Boards	DC1908A-A	DC1908A-A	DC1908A-A	DC1908A-A	DC1908A-A	DC1908A-A
Design Tools	Linduino File,LinearLabTools	Linduino File,LinearLabTools	Linduino File,LinearLabTools	Linduino File,LinearLabTools	Linduino File,LinearLabTools	Linduino File,LinearLabTools
Export Control	no	no	no	no	no	no
I/O	Serial SPI	Serial SPI	Serial SPI	Serial SPI	Serial SPI	Serial SPI
Input Drive	Fully Differential	Fully Differential	Fully Differential	Fully Differential	Fully Differential	Fully Differential
Input Span	В±6.25V, В±10.24V, В±12.5V	В±6.25V, В±10.24V, В±12.5V	В±6.25V, В±10.24V, В±12.5V	В±6.25V, В±10.24V, В±12.5V	В±6.25V, В±10.24V, В±12.5V	В±6.25V, В±10.24V, В±12.5V
Internal Reference	yes	yes	yes	yes	yes	yes
Operating Temperature Range, °C	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Power, mW	50	50	50	50	50	50
SFDR, dB	117	117	117	117	117	117
SINAD, dB	101	101	101	101	101	101
SNR, dB	100	100	100	100	100	100
Simultaneous	no	no	no	no	no	no
Speed, ksps	1000	1000	1000	1000	1000	1000
Supply Voltage Range	5V	5V	5V	5V	5V	5V
THD dB, dB	-115	-115	-115	-115	-115	-115

Öko-Plan

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