参数资料
型号: LTC2486IDE#TR
厂商: LINEAR TECHNOLOGY CORP
元件分类: ADC
英文描述: 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC14
封装: 4 X 3 MM, PLASTIC, MO-229WGED-3, QFN-14
文件页数: 1/36页
文件大小: 659K
代理商: LTC2486IDE#TR
LTC2486
2486fa
Typical applicaTion
FeaTures
applicaTions
DescripTion
16-Bit 2-/4-Channel
ΔS ADC
with PGA and Easy Drive
Input Current Cancellation
The LTC2486 is a 4-channel (2-channel differential),
16-bit,NoLatency
ΔSADCwithEasyDrivetechnology.
The patented sampling scheme eliminates dynamic input
current errors and the shortcomings of on-chip buffering
throughautomaticcancellationofdifferentialinputcurrent.
This allows large external source impedances and rail-to-
rail input signals to be directly digitized while maintaining
exceptional DC accuracy.
TheLTC2486includesprogrammablegain,ahighaccuracy
temperature sensor, and an integrated oscillator. This de-
vice can be configured to measure an external signal (from
combinationsof4analoginputchannelsoperatinginsingle
endedordifferentialmodes)oritsinternaltemperaturesen-
sor.Itcanbeprogrammedtorejectlinefrequenciesof50Hz,
60Hz,orsimultaneous50Hz/60Hz,provideaprogrammable
gain from 1 to 256 in 8 steps, and configured to double its
outputrate.Theintegratedtemperaturesensoroffers1/2°C
resolutionand2°Cabsoluteaccuracy.
The LTC2486 allows a wide common mode input range
(0V to VCC), independent of the reference voltage. Any
combination of single-ended or differential inputs can
be selected and the first conversion after a new channel
selection is valid.
Data Acquisition System with Temperature Compensation
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
No Latency
ΔS and Easy Drive are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Up to 2 Differential or 4 Single-Ended Inputs
Easy Drive Technology Enables Rail-to-Rail Inputs
with Zero Differential Input Current
Directly Digitizes High Impedance Sensors with
Full Accuracy
600nV RMS Noise
Programmable Gain from 1 to 256
Integrated High Accuracy Temperature Sensor
GND to VCC Input/Reference Common Mode Range
Programmable 50Hz, 60Hz, or Simultaneous
50Hz/60Hz Rejection Mode
2ppm INL, No Missing Codes
1ppm Offset and 15ppm Full-Scale Error
2x Speed Mode/Reduced Power Mode (15Hz Using
Internal Oscillator and 80A at 7.5Hz Output)
No Latency: Digital Filter Settles in a Single Cycle,
Even After a New Channel is Selected
Single Supply 2.7V to 5.5V Operation (0.8mW)
Internal Oscillator
Tiny 4mm
× 3mm DFN Package
Direct Sensor Digitizer
Direct Temperature Measurement
Instrumentation
Industrial Process Control
Absolute Temperature Error
SDI
SCK
SDO
CS
FO
REF+
VCC
2.7V TO 5.5V
10
F
COM
REF
16-BIT
Σ ADC
WITH EASY-DRIVE
4-CHANNEL
MUX
TEMPERATURE
SENSOR
IN+
IN
2486 TA01a
4-WIRE
SPI INTERFACE
CH0
CH1
CH3
CH2
0.1
F
OSC
TEMPERATURE (
°C)
–55 –30
–5
ABSOLUTE
ERROR
C)
5
4
3
2
1
–4
–3
–2
–1
0
120
95
70
45
20
2486 TA01b
–5
相关PDF资料
PDF描述
LTC2486CDE#TR 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC14
LTC2488CDE 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC14
LTC2488IDE#TR 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC14
LTC2488CDE#TR 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC14
LTC2488IDE 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC14
相关代理商/技术参数
参数描述
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