Datasheet Linear Technology LTC2358-18

Manufacturer	Linear Technology
Series	LTC2358-18

Buffered Octal, 18-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range

Datasheets

Preview and Download

PDF, 2.3 Mb, Language: en, File uploaded: Jul 11, 2017, Pages: 38
Buffered Octal, 18-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range

Extract from the document

Prices

Packaging

	LTC2358CLX-18#PBF	LTC2358HLX-18#PBF	LTC2358ILX-18#PBF
N	1	2	3
Package	7mm x 7mm LQFP-48 Package Outline Drawing	7mm x 7mm LQFP-48 Package Outline Drawing	7mm x 7mm LQFP-48 Package Outline Drawing
Package Code	LX	LX	LX
Package Index	05-08-1760	05-08-1760	05-08-1760
Pin Count	48	48	48

Parametrics

Parameters / Models	LTC2358CLX-18#PBF	LTC2358HLX-18#PBF	LTC2358ILX-18#PBF
ADC INL, LSB	1	1	1
ADCs	1	1	1
Architecture	SAR	SAR	SAR
Bipolar/Unipolar Input	Bipolar, Unipolar, True Bipolar	Bipolar, Unipolar, True Bipolar	Bipolar, Unipolar, True Bipolar
Bits, bits	18	18	18
Number of Channels	8	8	8
DNL, LSB	0.2	0.2	0.2
Demo Boards	DC2365A-A,DC2542A	DC2365A-A,DC2542A	DC2365A-A,DC2542A
Design Tools	Linduino File	Linduino File	Linduino File
Export Control	no	no	no
Features	Buffered Inputs, Simultaneous Sampling, SoftSpan	Buffered Inputs, Simultaneous Sampling, SoftSpan	Buffered Inputs, Simultaneous Sampling, SoftSpan
I/O	Serial SPI, Serial LVDS	Serial SPI, Serial LVDS	Serial SPI, Serial LVDS
Input Drive	Differential, Single-Ended	Differential, Single-Ended	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	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	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	yes	yes
Operating Temperature Range, °C	0 to 70	-40 to 125	-40 to 85
Power, mW	219	219	219
SFDR, dB	113	113	113
SINAD, dB	96.2	96.2	96.2
SNR, dB	96.4	96.4	96.4
Simultaneous	yes	yes	yes
Speed, ksps	200	200	200
Supply Voltage Range	1.71V to 5V	1.71V to 5V	1.71V to 5V
THD dB, dB	-111	-111	-111

Eco Plan

	LTC2358CLX-18#PBF	LTC2358HLX-18#PBF	LTC2358ILX-18#PBF
RoHS	Compliant	Compliant	Compliant

Application Notes

Download
Buffered ADC Family Eliminates Signal Conditioning Complexity &mdash AN167
PDF, 1.3 Mb, File published: Sep 20, 2017
Extract from the document
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: LTC2358-18 (3)

LTC2358CLX-18#PBF LTC2358HLX-18#PBF LTC2358ILX-18#PBF

Manufacturer's Classification

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