參數(shù)資料
型號： DC1011A-B
廠商： Linear Technology
文件頁數(shù)： 1/32頁
文件大?。?/td> 0K
描述： BOARD DELTA SIGMA ADC LTC2496
軟件下載： QuikEval System
設(shè)計資源： DC1011A Schematic
DC1011A Design Files
標準包裝： 1
系列： Easy Drive™, QuikEval™
ADC 的數(shù)量： 1
位數(shù)： 16
采樣率（每秒）： 6.9
數(shù)據(jù)接口： MICROWIRE?，串行，SPI?
已用 IC / 零件： LTC2496
已供物品： 板
相關(guān)產(chǎn)品： LTC2496CUHF#TRPBF-ND - IC ADC 16BIT DELTA SIG 38-QFN
LTC2496IUHF#TRPBF-ND - IC ADC 16BIT DELTA SIG 38-QFN
LTC2496CUHF#PBF-ND - IC ADC 16BIT DELTA SIG 38-QFN
LTC2496IUHF#PBF-ND - IC ADC 16BIT DELTA SIG 38-QFN
LTC2496
2496fb
Typical applicaTion
FeaTures
applicaTions
DescripTion
16-Bit 8-/16-Channel
ΔΣ ADC with Easy Drive
Input Current Cancellation
The LTC2496 is a 16-channel (8-differential) 16-bit No
Latency
ΔΣ ADC with Easy Drive technology. The pat-
ented sampling scheme eliminates dynamic input current
errors and the shortcomings of on-chip buffering through
automatic cancellation of differential input current. This
allows large external source impedances, and rail-to-rail
input signals to be directly digitized while maintaining
exceptional DC accuracy.
The LTC2496 includes an integrated oscillator. This device
can be configured to measure an external signal (from
combinations of 16 analog input channels operating in
singleendedordifferentialmodes).Itautomaticallyrejects
line frequencies of 50Hz and 60Hz, simultaneously.
The LTC2496 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 is
selected is valid. Access to the multiplexer output enables
optionalexternalamplifierstobesharedbetweenallanalog
inputs and auto calibration continuously removes their
associated offset and drift.
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.
Data Acquisition System
n
Up to 8 Differential or 16 Single-Ended Inputs
n
Easy Drive Technology Enables Rail-to-Rail Inputs
with Zero Differential Input Current
n
Directly Digitizes High Impedance Sensors with
Full Accuracy
n
600nV RMS Noise (0.02 LSB Transition Noise)
n
GND to VCC Input/Reference Common Mode Range
n
Simultaneous 50Hz/60Hz Rejection
n
2ppm INL, No Missing Codes
n
1ppm Offset and 15ppm Full-Scale Error
n
No Latency: Digital Filter Settles in a Single Cycle,
Even After a New Channel is Selected
n
Single Supply 2.7V to 5.5V Operation (0.8mW)
n
Internal Oscillator
n
QFN 5mm
× 7mm Package
n
Direct Sensor Digitizer
n
Direct Temperature Measurement
n
Instrumentation
n
Industrial Process Control
+FS Error vs RSOURCE
0.1F
10F
f0
REF+
VCC
MUXOUT/
ADCIN
MUXOUT/
ADCIN
2.7V TO 5.5V
COM
REF–
16-BIT ∑ ADC
WITH EASY-DRIVE
16-CHANNEL
MUX
IN+
IN–
2496 TA01a
CH0
CH1
CH7
CH8
CH15
OSC
SDI
SCK
SDO
CS
4-WIRE
SPI INTERFACE
RSOURCE ( )
1
+FS
ERROR
(ppm)
–20
0
20
1k
100k
2498 TA01b
–40
–60
–80
10
100
10k
40
60
80
VCC = 5V
VREF = 5V
VIN+ = 3.75V
VIN– = 1.25V
fO = GND
TA = 25°C
CIN = 1F
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