Datasheet Linear Technology LTC2372-18

Manufacturer	Linear Technology
Series	LTC2372-18

18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR

Datasheets

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PDF, 2.0 Mb, Language: en, File uploaded: Jul 31, 2016, Pages: 50
18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR

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Packaging

	LTC2372CUH-18#PBF	LTC2372CUH-18#TRPBF	LTC2372HUH-18#PBF	LTC2372HUH-18#TRPBF	LTC2372IUH-18#PBF	LTC2372IUH-18#TRPBF
N	1	2	3	4	5	6
Package	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing
Package Code	UH	UH	UH	UH	UH	UH
Package Index	05-08-1693	05-08-1693	05-08-1693	05-08-1693	05-08-1693	05-08-1693
Pin Count	32	32	32	32	32	32

Parametrics

Parameters / Models	LTC2372CUH-18#PBF	LTC2372CUH-18#TRPBF	LTC2372HUH-18#PBF	LTC2372HUH-18#TRPBF	LTC2372IUH-18#PBF	LTC2372IUH-18#TRPBF
ADC INL, LSB	0.5	0.5	0.5	0.5	0.5	0.5
ADCs	1	1	1	1	1	1
Architecture	SAR	SAR	SAR	SAR	SAR	SAR
Bipolar/Unipolar Input	Bipolar, Unipolar	Bipolar, Unipolar	Bipolar, Unipolar	Bipolar, Unipolar	Bipolar, Unipolar	Bipolar, Unipolar
Bits, bits	18	18	18	18	18	18
Number of Channels	8	8	8	8	8	8
DNL, LSB	0.25	0.25	0.25	0.25	0.25	0.25
Demo Boards	DC2071A-B	DC2071A-B	DC2071A-B	DC2071A-B	DC2071A-B	DC2071A-B
Design Tools	Linduino File	Linduino File	Linduino File	Linduino File	Linduino File	Linduino File
Export Control	no	no	no	no	no	no
Features	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN	Digital Gain Compression, Programmable Sequencer, MUXOUT/ADCIN
I/O	Serial SPI	Serial SPI	Serial SPI	Serial SPI	Serial SPI	Serial SPI
Input Drive	Pseudo-Differential, Fully Differential	Pseudo-Differential, Fully Differential	Pseudo-Differential, Fully Differential	Pseudo-Differential, Fully Differential	Pseudo-Differential, Fully Differential	Pseudo-Differential, Fully Differential
Input Span	В±4.096V, 0V to 4.096V, В±2.048V	В±4.096V, 0V to 4.096V, В±2.048V	В±4.096V, 0V to 4.096V, В±2.048V	В±4.096V, 0V to 4.096V, В±2.048V	В±4.096V, 0V to 4.096V, В±2.048V	В±4.096V, 0V to 4.096V, В±2.048V
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	27	27	27	27	27	27
SFDR, dB	114	114	114	114	114	114
SINAD, dB	99.8	99.8	99.8	99.8	99.8	99.8
SNR, dB	100	100	100	100	100	100
Simultaneous	no	no	no	no	no	no
Speed, ksps	500	500	500	500	500	500
Supply Voltage Range	5V	5V	5V	5V	5V	5V
THD dB, dB	-114	-114	-114	-114	-114	-114

Eco Plan

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

Design Notes

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Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs &mdash DN1034
PDF, 371 Kb, File published: 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) …

Articles

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Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs &mdash LT Journal
PDF, 313 Kb, File published: 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 …

Model Line

Series: LTC2372-18 (6)

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

Manufacturer's Classification

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