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LTC1286IS8#PBF

Description
1-Channel Single ADC SAR 12.5ksps 12-bit Serial 8-Pin SOIC N Tube
CategoryAnalog mixed-signal IC    converter   
File Size284KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric View All

LTC1286IS8#PBF Overview

1-Channel Single ADC SAR 12.5ksps 12-bit Serial 8-Pin SOIC N Tube

LTC1286IS8#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
Resolution12bit
Number of ADCs1
Number of Input Channels1
Sampling Rate12.5ksps
Digital Interface TypeSerial (3-Wire, SPI, Microwire)
Input TypeVoltage
Input Signal TypePseudo-Differential
Voltage ReferenceExternal
Polarity of Input VoltageUnipolar
Voltage Supply SourceSingle
Input Voltage5V
Minimum Single Supply Voltage (V)4.5
Typical Single Supply Voltage (V)5
Maximum Single Supply Voltage (V)9
Typical Power Dissipation (mW)1.25
Maximum Power Dissipation (mW)500
Integral Nonlinearity Error±2LSB
Full Scale Error±8LSB
No Missing Codes (bit)12
Sample and HoldYes
Single-Ended InputNo
Digital Supply SupportNo
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTube
Supplier Temperature GradeIndustrial
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
FEATURES
s
s
s
s
s
s
s
s
s
s
LTC1286/LTC1298
Micropower Sampling
12-Bit A/D Converters In
S0-8 Packages
DESCRIPTION
The LTC1286/LTC1298 are micropower, 12-bit, succes-
sive approximation sampling A/D converters. They typi-
cally draw only 250µA of supply current when converting
and automatically power down to a typical supply current
of 1nA whenever they are not performing conversions.
They are packaged in 8-pin SO packages and operate on
5V to 9V supplies. These 12-bit, switched-capacitor, suc-
cessive approximation ADCs include sample-and-holds.
The LTC1286 has a single differential analog input. The
LTC1298 offers a software selectable 2-channel MUX.
On-chip serial ports allow efficient data transfer to a wide
range of microprocessors and microcontrollers over three
wires. This, coupled with micropower consumption, makes
remote location possible and facilitates transmitting data
through isolation barriers.
These circuits can be used in ratiometric applications or
with an external reference. The high impedance analog
inputs and the ability to operate with reduced spans (to
1.5V full scale) allow direct connection to sensors and
transducers in many applications, eliminating the need for
gain stages.
s
s
s
s
12-Bit Resolution
8-Pin SOIC Plastic Package
Low Cost
Low Supply Current: 250µA Typ.
Auto Shutdown to 1nA Typ.
Guaranteed
±3/4LSB
Max DNL
Single Supply 5V to 9V Operation
On-Chip Sample-and-Hold
60µs Conversion Time
Sampling Rates:
12.5 ksps (LTC1286)
11.1 ksps (LTC1298)
I/O Compatible with SPI, Microwire, etc.
Differential Inputs (LTC1286)
2-Channel MUX (LTC1298)
3V Versions Available: LTC1285/LTC1288
APPLICATIONS
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s
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Battery-Operated Systems
Remote Data Acquisition
Battery Monitoring
Handheld Terminal Interface
Temperature Measurement
Isolated Data Acquisition
TYPICAL APPLICATIONS
N
25µW, S0-8 Package, 12-Bit ADC
Samples at 200Hz and Runs Off a 5V Supply
4.7µF
5V
Supply Current vs Sample Rate
1000
T
A
= 25°C
V
CC
= V
REF
= 5V
f
CLK
= 200kHz
100
MPU
(e.g., 8051)
1
ANALOG INPUT
0V TO 5V RANGE
2
3
4
V
REF
+IN
–IN
GND
V
CC
LTC1286 CLK
D
OUT
CS/SHDN
8
7
6
5
SERIAL DATA LINK
LTC1286/98 • TA01
P1.4
P1.3
P1.2
SUPPLY CURRENT (µA)
10
1
0.1k
1k
10k
SAMPLE FREQUENCY (Hz)
100k
U
U
U
LTC1286/98 • TA02
1
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