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LTC1861CS8#TRPBF

Description
2-Channel Single ADC SAR 250ksps 12-bit Serial Automotive 8-Pin SOIC N T/R
File Size344KB,18 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC1861CS8#TRPBF Overview

2-Channel Single ADC SAR 250ksps 12-bit Serial Automotive 8-Pin SOIC N T/R

LTC1861CS8#TRPBF 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
Resolution12bit
Number of ADCs1
Number of Input Channels1|2
Sampling Rate250ksps
Digital Interface TypeSerial (3-Wire, SPI, Microwire)
Input TypeVoltage
Input Signal TypeDifferential|Single-Ended
Voltage ReferenceSupply
Polarity of Input VoltageUnipolar
Voltage Supply SourceSingle
Input Voltage5V
Minimum Single Supply Voltage (V)4.75
Typical Single Supply Voltage (V)5
Maximum Single Supply Voltage (V)5.25
Typical Power Dissipation (mW)1.25
Maximum Power Dissipation (mW)400
Integral Nonlinearity Error±1LSB
Full Scale Error±20mV
Signal to Noise Ratio72dB(Typ)
No Missing Codes (bit)12
Sample and HoldYes
Single-Ended InputYes
Digital Supply SupportNo
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
PackagingTape and Reel
Supplier Temperature GradeCommercial
Pin Count8
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing
LTC1860/LTC1861
µPower, 12-Bit, 250ksps
1- and 2-Channel ADCs in MSOP
FeaTures
n
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DescripTion
The
LTC
®
1860/LTC1861
are 12-bit A/D converters that are
offered in MSOP and SO-8 packages and operate on a single
5V supply. At 250ksps, the supply current is only 850µA.
The supply current drops at lower speeds because the
LTC1860/LTC1861 automatically power down to a typical
supply current of 1nA between conversions. These 12-bit
switched capacitor successive approximation ADCs include
sample-and-holds. The LTC1860 has a differential analog
input with an adjustable reference pin. The LTC1861 offers
a software-selectable 2-channel MUX and an adjustable
reference pin on the MSOP version.
The 3-wire, serial I/O, MSOP or SO-8 package and
extremely high sample rate-to-power ratio make these
ADCs ideal choices for compact, low power, high speed
systems.
These ADCs can be used in ratiometric applications or with
external references. The high impedance analog inputs and
the ability to operate with reduced spans down to 1V full
scale, allow direct connection to signal sources in many
applications, eliminating the need for external gain stages.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
n
n
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12-Bit 250ksps ADCs in MSOP Package
Single 5V Supply
Low Supply Current: 850µA (Typ)
Auto Shutdown Reduces Supply Current
to 2µA at 1ksps
True Differential Inputs
1-Channel (LTC1860) or 2-Channel (LTC1861)
Versions
SPI/MICROWIRE
TM
Compatible Serial I/O
High Speed Upgrade to LTC1286/LTC1298
Pin Compatible with 16-Bit LTC1864/LTC1865
Guaranteed Operation to 125°C (MSOP Package)
applicaTions
n
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High Speed Data Acquisition
Portable or Compact Instrumentation
Low Power Battery-Operated Instrumentation
Isolated and/or Remote Data Acquisition
Typical applicaTion
Single 5V Supply, 250ksps, 12-Bit Sampling ADC
1µF
5V
100
LTC1860
1
ANALOG INPUT
0V TO 5V
2
3
4
V
REF
IN
+
IN
GND
V
CC
SCK
SDO
CONV
8
7
6
5
1860 TA01
Supply Current vs Sampling Frequency
1000
SUPPLY CURRENT (µA)
10
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
1
0.1
0.01
0.01
0.1
10
100
1
SAMPLING FREQUENCY (kHz)
1000
1860 TA02
18601fb
For more information
www.linear.com/LTC1860
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