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LTC1285CS8#TR

Description
IC adc 12bit 3V sampling 8soic
CategoryAnalog mixed-signal IC    converter   
File Size338KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LTC1285CS8#TR Overview

IC adc 12bit 3V sampling 8soic

LTC1285CS8#TR Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP,
Contacts8
Manufacturer packaging codeS8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Is SamacsysN
Maximum analog input voltage3.05 V
Minimum analog input voltage-0.05 V
Converter typeADC, SUCCESSIVE APPROXIMATION
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Maximum linear error (EL)0.0488%
Humidity sensitivity level1
Number of analog input channels1
Number of digits12
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Output bit codeBINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Sampling rate0.0075 MHz
Sample and hold/Track and holdSAMPLE
Maximum seat height1.75 mm
Maximum slew rate0.32 mA
Nominal supply voltage3 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.9 mm
Base Number Matches1
LTC1285/LTC1288
3V Micropower Sampling
12-Bit A/D Converters in
SO-8 Packages
DESCRIPTION
The LTC
®
1285/LTC1288 are 3V micropower, 12-bit, suc-
cessive approximation sampling A/D converters. They
typically draw only 160µA of supply current when con-
verting and automatically power down to a typical supply
current of 1nA whenever they are not performing conver-
sions. They are packaged in 8-pin SO packages and
operate on 3V to 6V supplies. These 12-bit, switched-
capacitor, successive approximation ADCs include
sample-and-holds. The LTC1285 has a single differential
analog input. The LTC1288 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
12-Bit Resolution
8-Pin SO Plastic Package
Low Cost
Low Supply Current: 160µA Typ
Auto Shutdown to 1nA Typ
Guaranteed
±3/4LSB
Max DNL
Single Supply 3V to 6V Operation
Differential Inputs (LTC1285)
2-Channel MUX (LTC1288)
On-Chip Sample-and-Hold
100µs Conversion Time
Sampling Rates:
7.5ksps (LTC1285)
6.6ksps (LTC1288)
I/O Compatible with SPI, Microwire, etc.
APPLICATIONS
s
s
s
s
s
s
Pen Screen Digitizing
Battery-Operated Systems
Remote Data Acquisition
Isolated Data Acquisition
Battery Monitoring
Temperature Measurement
TYPICAL APPLICATIONS
N
12µW, S0-8 Package, 12-Bit ADC
Samples at 200Hz and Runs Off a 3V Supply
1µF
3V
Supply Current vs Sample Rate
1000
T
A
= 25°C
V
CC
= 2.7V
V
REF
= 2.5V
f
CLK
= 120kHz
100
MPU
(e.g., 8051)
1
2
V
REF
V
CC
8
7
P1.4
P1.3
P1.2
SERIAL DATA LINK
LTC1285/88 • TA01
SUPPLY CURRENT (µA)
CLK
+IN
ANALOG INPUT
LTC1285
3
6
0V TO 3V RANGE
–IN
D
OUT
4
5
CS/SHDN
GND
10
1
0.1
1
10
SAMPLE FREQUENCY (kHz)
100
U
U
U
LTC1285/88 • TA02
1
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