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LTC2378IMS-20#PBF

Description
1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin MSOP Tube
File Size918KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC2378IMS-20#PBF Overview

1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin MSOP Tube

LTC2378IMS-20#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Converter TypeGeneral Purpose
ArchitectureSAR
Resolution20bit
Number of ADCs1
Number of Input Channels1
Sampling Rate1Msps
Digital Interface TypeSerial (SPI)
Input TypeVoltage
Input Signal TypeDifferential
Voltage ReferenceExternal
Polarity of Input VoltageBipolar
Voltage Supply SourceSingle
Input Voltage±5V
Minimum Single Supply Voltage (V)2.375
Typical Single Supply Voltage (V)2.5
Maximum Single Supply Voltage (V)2.625
Typical Power Dissipation (mW)21
Maximum Power Dissipation (mW)25
Integral Nonlinearity Error±2ppm
Full Scale Error±100ppm
Signal to Noise Ratio104dB(Typ)
No Missing Codes (bit)20
Sample and HoldNo
Single-Ended InputNo
Digital Supply SupportNo
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTube
Supplier Temperature GradeIndustrial
Pin Count16
Standard Package NameMSOP
Supplier PackageMSOP
MountingSurface Mount
Package Height0.86
Package Length4.04
Package Width3
PCB changed16
Lead ShapeGull-wing
FeaTures
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
LTC2378-20
20-Bit, 1Msps, Low Power
SAR ADC with 0.5ppm INL
DescripTion
The
LTC
®
2378-20
is a low noise, low power, high speed
20-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2378-20 has a
±V
REF
fully differential input range with V
REF
ranging from
2.5V to 5.1V. The LTC2378-20 consumes only 21mW and
achieves ±2ppm INL maximum, no missing codes at 20
bits with 104dB SNR.
The LTC2378-20 has a high speed SPI-compatible serial
interface that supports 1.8V, 2.5V, 3.3V and 5V logic
while also featuring a daisy-chain mode. The fast 1Msps
throughput with no cycle latency makes the LTC2378-20
ideally suited for a wide variety of high speed applications.
An internal oscillator sets the conversion time, easing exter-
nal timing considerations. The LTC2378-20 automatically
powers down between conversions, leading to reduced
power dissipation that scales with the sampling rate.
The LTC2378-20 features a unique digital gain compres-
sion (DGC) function, which eliminates the driver amplifier’s
negative supply while preserving the full resolution of the
ADC. When enabled, the ADC performs a digital scaling
function that maps zero-scale code from 0V to
0.1 •
V
REF
and full-scale code from V
REF
to
0.9 •
V
REF
. For a typical
reference voltage of 5V, the full-scale input range is now
0.5V to 4.5V, which provides adequate headroom for
powering the driving amplifier from a single 5.5V supply.
1Msps Throughput Rate
±0.5ppm INL (Typ)
Guaranteed 20-Bit No Missing Codes
Low Power: 21mW at 1Msps, 21µW at 1ksps
104dB SNR (Typ) at f
IN
= 2kHz
–125dB
THD (Typ) at f
IN
= 2kHz
Digital Gain Compression (DGC)
Guaranteed Operation to 85°C
2.5V Supply
Fully Differential Input Range ±V
REF
V
REF
Input Range from 2.5V to 5.1V
No Pipeline Delay, No Cycle Latency
1.8V to 5V I/O Voltages
SPI-Compatible Serial I/O with Daisy-Chain Mode
Internal Conversion Clock
16-Lead MSOP and 4mm
×
3mm DFN Packages
applicaTions
n
n
n
n
n
n
Medical Imaging
High Speed Data Acquisition
Portable or Compact Instrumentation
Industrial Process Control
Low Power Battery-Operated Instrumentation
ATE
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.
Patents Pending. Protected by U.S. Patents, including
7705765, 7961132, 8319673.
Typical applicaTion
2.5V
10µF
V
REF
0V
V
REF
0V
6800pF
3300pF
V
DD
IN
+
LTC2378-20
IN
6800pF
REF
2.5V TO 5.1V
GND
OV
DD
1.8V TO 5V
0.1µF
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
REF/DGC
237820 TA01a
Integral Nonlinearity vs Output Code
2.0
1.5
1.0
INL ERROR (ppm)
+
10
0.5
0
–0.5
–1.0
–1.5
–2.0
–524288
–262144
0
262144
OUTPUT CODE
524288
237820fb
10
SAMPLE CLOCK
V
REF
47µF
(X7R, 1210 SIZE)
237820 TA01b
For more information
www.linear.com/LTC2378-20
1

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Description 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin MSOP Tube 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin DFN EP Tube 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin DFN EP T/R 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin MSOP Tube 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin MSOP T/R 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin DFN EP Tube 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin DFN EP T/R 1-Channel Single ADC SAR 1Msps 20-bit Serial Automotive 16-Pin MSOP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Active Active Active Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Converter Type General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose
Architecture SAR SAR SAR SAR SAR SAR SAR SAR
Resolution 20bit 20bit 20bit 20bit 20bit 20bit 20bit 20bit
Number of ADCs 1 1 1 1 1 1 1 1
Number of Input Channels 1 1 1 1 1 1 1 1
Sampling Rate 1Msps 1Msps 1Msps 1Msps 1Msps 1Msps 1Msps 1Msps
Digital Interface Type Serial (SPI) Serial (SPI) Serial (SPI) Serial (SPI) Serial (SPI) Serial (SPI) Serial (SPI) Serial (SPI)
Input Type Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage
Input Signal Type Differential Differential Differential Differential Differential Differential Differential Differential
Voltage Reference External External External External External External External External
Polarity of Input Voltage Bipolar Bipolar Bipolar Bipolar Bipolar Bipolar Bipolar Bipolar
Voltage Supply Source Single Single Single Single Single Single Single Single
Input Voltage ±5V ±5V ±5V ±5V ±5V ±5V ±5V ±5V
Minimum Single Supply Voltage (V) 2.375 2.375 2.375 2.375 2.375 2.375 2.375 2.375
Typical Single Supply Voltage (V) 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
Maximum Single Supply Voltage (V) 2.625 2.625 2.625 2.625 2.625 2.625 2.625 2.625
Typical Power Dissipation (mW) 21 21 21 21 21 21 21 21
Maximum Power Dissipation (mW) 25 25 25 25 25 25 25 25
Integral Nonlinearity Error ±2ppm ±2ppm ±2ppm ±2ppm ±2ppm ±2ppm ±2ppm ±2ppm
Full Scale Error ±100ppm ±100ppm ±100ppm ±100ppm ±100ppm ±100ppm ±100ppm ±100ppm
Signal to Noise Ratio 104dB(Typ) 104dB(Typ) 104dB(Typ) 104dB(Typ) 104dB(Typ) 104dB(Typ) 104dB(Typ) 104dB(Typ)
No Missing Codes (bit) 20 20 20 20 20 20 20 20
Sample and Hold No No No No No No No No
Single-Ended Input No No No No No No No No
Digital Supply Support No No No No No No No No
Maximum Operating Temperature (°C) 85 70 70 70 70 85 85 85
Packaging Tube Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel Tape and Reel
Supplier Temperature Grade Industrial Commercial Commercial Commercial Commercial Industrial Industrial Industrial
Pin Count 16 16 16 16 16 16 16 16
Standard Package Name MSOP DFN DFN MSOP MSOP DFN DFN MSOP
Supplier Package MSOP DFN EP DFN EP MSOP MSOP DFN EP DFN EP MSOP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.86 0.75(Max) 0.75(Max) 0.86 0.86 0.75(Max) 0.75(Max) 0.86
Package Length 4.04 4 4 4.04 4.04 4 4 4.04
Package Width 3 3 3 3 3 3 3 3
PCB changed 16 16 16 16 16 16 16 16
Lead Shape Gull-wing No Lead No Lead Gull-wing Gull-wing No Lead No Lead Gull-wing
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