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LTC2341IUH-18#TRPBF

Description
Analog-to-Digital Converter - ADC Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range
Categorysemiconductor    Data converter IC    AD converter - ADC   
File Size2MB,39 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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LTC2341IUH-18#TRPBF Overview

Analog-to-Digital Converter - ADC Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range

LTC2341IUH-18#TRPBF Parametric

Parameter NameAttribute value
MakerADI
Product CategoryAnalog to Digital Converter - ADC
seriesLTC2341-18
Installation styleSMD/SMT
Package/boxQFN-32
resolution18 bit
Number of channels2 Channel
Sampling ratio666 kS/s
input typeDifferential
Interface TypeSerial
structureSAR
Reference typeInternal
Analog supply voltage5 V
Minimum operating temperature- 40 C
Maximum operating temperature+ 125 C
EncapsulationCut Tape
EncapsulationReel
Converter quantity1 Converter
productAnalog to Digital Converters
typePrecision
closureShutdown
development kitDC2581A-A
DNL - Differential Nonlinearity0.5 LSB
INL - Integral nonlinearity1.5 LSB
Pd-power dissipation74 mW
SFDR - Spurious Free Dynamic Range115 dB
SINAD - signal-to-noise and distortion rate95 dB
Factory packaging quantity2500
THD - Total Harmonic Distortion- 114 dB
FeaTures
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LTC2341-18
Dual, 18-Bit, 666ksps/ch
Differential SoftSpan ADC with
Wide Input Common Mode Range
DescripTion
The
LTC
®
2341-18
is an 18-bit, low noise 2-channel simul-
taneous sampling successive approximation register (SAR)
ADC with differential, wide common mode range inputs.
Operating from a 5V supply and using the internal reference
and buffer, both channels of this SoftSpan
TM
ADC can be
independently configured on a conversion-by-conversion
basis to accept ±4.096V, 0V to 4.096V, ±2.048V, or 0V
to 2.048V signals. One channel may also be disabled to
increase throughput on the other channel.
The wide input common mode range and 105dB CMRR of
the LTC2341-18 analog inputs allow the ADC to directly
digitize a variety of signals, simplifying signal chain de-
sign. This input signal flexibility, combined with ±4LSB
INL, no missing codes at 18 bits, and 95dB SNR, makes
the LTC2341-18 an ideal choice for many applications
requiring wide dynamic range.
The LTC2341-18 supports pin-selectable SPI CMOS (1.8V
to 5V) and LVDS serial interfaces. Either one or two lanes
of data output may be employed in CMOS mode, allowing
the user to optimize bus width and throughput.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673,
9197235.
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666ksps per Channel Throughput
Two Simultaneous Sampling Channels
±4LSB INL (Maximum)
Guaranteed 18-Bit, No Missing Codes
Differential, Wide Common Mode Range Inputs
Per-Channel SoftSpan Input Ranges:
±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V
±5V, 0V to 5V, ±2.5V, 0V to 2.5V
95dB Single-Conversion SNR (Typical)
−114dB THD (Typical) at f
IN
= 2kHz
105dB CMRR (Typical) at f
IN
= 200Hz
Rail-to-Rail Input Overdrive Tolerance
Guaranteed Operation to 125°C
Integrated Reference and Buffer (4.096V)
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
Internal Conversion Clock, No Cycle Latency
74mW Power Dissipation (Typical)
32-Lead (5mm
×
5mm) QFN Package
applicaTions
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Programmable Logic Controllers
Industrial Process Control
Medical Imaging
High Speed Data Acquisition
Typical applicaTion
5V
0.1µF
2.2µF
1.8V TO 5V
0.1µF
CMOS OR LVDS
I/O INTERFACE
V
DD
IN0+
S/H
IN0–
0V
BIPOLAR
0V
UNIPOLAR
IN1+
S/H
IN1–
0V
0V
TWO SIMULTANEOUS
SAMPLING CHANNELS
REFBUF
47µF
Integral Nonlinearity vs
Output Code and Channel
2.0
1.5
1.0
INL ERROR (LSB)
0.5
0
–0.5
–1.0
SAMPLE
CLOCK
–1.5
–2.0
–131072
–65536
0
65536
OUTPUT CODE
131072
234118 TA01b
5V
ARBITRARY
FULLY
DIFFERENTIAL
5V
V
DDLBYP
LTC2341-18
OV
DD
LVDS/CMOS
PD
±4.096V RANGE
FULLY DIFFERENTIAL DRIVE (IN
= –IN
+
)
ALL CHANNELS
MUX
18-BIT
SAR ADC
5V
5V
REFIN
0.1µF
GND
SDO0
SDO1
SCKO
SCKI
SDI
CS
BUSY
CNV
234118 TA01a
DIFFERENTIAL INPUTS
IN+/IN–
WITH
WIDE INPUT COMMON MODE RANGE
234118f
For more information
www.linear.com/LTC2341-18
1

LTC2341IUH-18#TRPBF Related Products

LTC2341IUH-18#TRPBF LTC2341CUH-18#TRPBF LTC2341HUH-18#TRPBF
Description Analog-to-Digital Converter - ADC Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range Analog-to-Digital Converter - ADC Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range Analog-to-Digital Converter - ADC Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range
Maker ADI ADI ADI
Product Category Analog to Digital Converter - ADC Analog to Digital Converter - ADC Analog to Digital Converter - ADC
series LTC2341-18 LTC2341-18 LTC2341-18
Installation style SMD/SMT SMD/SMT SMD/SMT
Package/box QFN-32 QFN-32 QFN-32
resolution 18 bit 18 bit 18 bit
Number of channels 2 Channel 2 Channel 2 Channel
Sampling ratio 666 kS/s 666 kS/s 666 kS/s
input type Differential Differential Differential
Interface Type Serial Serial Serial
structure SAR SAR SAR
Reference type Internal Internal Internal
Analog supply voltage 5 V 5 V 5 V
Minimum operating temperature - 40 C - 40 C - 40 C
Maximum operating temperature + 125 C + 125 C + 125 C
Converter quantity 1 Converter 1 Converter 1 Converter
product Analog to Digital Converters Analog to Digital Converters Analog to Digital Converters
type Precision Precision Precision
closure Shutdown Shutdown Shutdown
development kit DC2581A-A DC2581A-A DC2581A-A
DNL - Differential Nonlinearity 0.5 LSB 0.5 LSB 0.5 LSB
INL - Integral nonlinearity 1.5 LSB 1.5 LSB 1.5 LSB
Pd-power dissipation 74 mW 74 mW 74 mW
SFDR - Spurious Free Dynamic Range 115 dB 115 dB 115 dB
SINAD - signal-to-noise and distortion rate 95 dB 95 dB 95 dB
Factory packaging quantity 2500 2500 2500
THD - Total Harmonic Distortion - 114 dB - 114 dB - 114 dB
Encapsulation Reel Reel Reel
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