Datasheet Linear Technology LTC2372CUH-18#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC2372-18
Artikelnummer	LTC2372CUH-18#PBF

18-Bit, 500 ksps, 8-Kanal-SAR-ADC mit 100 dB SNR

Datenblätter

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PDF, 2.0 Mb, Sprache: en, Datei hochgeladen: Jul 31, 2016, Seiten: 50
18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR

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Preise

Verpackung

Package	5x5 QFN-32
Package Code	UH
Package Index	05-08-1693

Parameter

ADC INL	0.5 LSB
ADCs	1
Architecture	SAR
Bipolar/Unipolar Input	Bipolar, Unipolar
Bits	18 bits
Number of Channels	8
DNL	0.25 LSB
Demo Boards	DC2071A-B
Design Tools	Linduino File
Export Control	no
Features	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN
I/O	Serial SPI
Input Drive	Pseudo-Differential, Fully Differential
Input Span	В±4.096V, 0V to 4.096V, В±2.048V
Internal Reference	yes
Operating Temperature Range	0 to 70 °C
Power	27 mW
SFDR	114 dB
SINAD	99.8 dB
SNR	100 dB
Simultaneous	no
Speed	500 ksps
Supply Voltage Range	5V
THD dB	-114 dB

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs &mdash DN1034
PDF, 371 Kb, Datei veröffentlicht: Oct 1, 2015
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Low Power, Precision Op Amp Simplifies
Driving of MUXed ADCs
Design Note 1034
Guy Hoover
Introduction
The high speed op amps required to buffer a modern
16вЂ‘/18-bit analog-to-digital converter (ADC) typically
dissipate as much power as the ADC itself, often with
a maximum offset spec of aboutВ 1mV, well beyond
that of the ADC. If multiple multichannel ADCs are
required, the power dissipation can quickly rise to
unacceptable levels.
The simple buffer presented here is capable of driving
the LTC В®2372-18 8-channel ADC and achieving near
data sheet SNR, THD and offset performance with very
low power dissipation if the input signals involved are
in the range of DC to 1kHz.
Circuit Description
The LTC2372-18 is a low noise, 500ksps, 8-channel
18вЂ‘bit successive approximation register (SAR)ADC.
Operating from a single 5V supply, the LTC2372вЂ‘18
achieves вЂ“110dB THD (typical), 100dB (fully
differential)/95dB (pseudo-differential) SNR (typical) …

Artikel

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Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs &mdash LT Journal
PDF, 313 Kb, Datei veröffentlicht: Aug 11, 2016
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Low Power, Precision Op Amp Simplifies Driving of MUXed
ADCs
Guy Hoover The high speed op amps required to buffer a modern 16вЂ‘/18-bit analog-to-digital
converter (ADC) typically dissipate as much power as the ADC itself, often with a
maximum offset spec of aboutВ 1mV, well beyond that of the ADC. If multiple multichannel
ADCs are required, the power dissipation can quickly rise to unacceptable levels.
8V
0.1ВµF 4.096V 5V
1.8V TO 5V 0V 10ВµF 4.096V 91О© + 0V 4300pF The LT6016 is a dual rail-to-rail input op
amp with input offset voltage less than
50ВµV (maximum) that draws only 315Вµ A
per amplifier (typical). It is also available
as a single and a quad (LT6015/LT6017).
The circuit of Figure 1 shows the LT6016
op amp configured as a noninverting
buffer driving the analog inputs of the
LTC2372-18. Typical power dissipation
of each op amp is only 3.7mW. For all
eight channels, this is a power dissipation of only 30mW, approximately the
same power dissipation as the ADC.
Running the LT6016 on a single 5.25V
supply and enabling the ADCвЂ™s digital
gain compression mode reduces the …

Modellreihe

Serie: LTC2372-18 (6)

LTC2372CUH-18#PBF LTC2372CUH-18#TRPBF LTC2372HUH-18#PBF LTC2372HUH-18#TRPBF LTC2372IUH-18#PBF LTC2372IUH-18#TRPBF

Herstellerklassifikation

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

Andere Namen:

LTC2372CUH-18PBF, LTC2372CUH-18 PBF, LTC2372CUH18#PBF, LTC2372CUH 18#PBF

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